Liquid ejector

Abstract

The present invention provides a liquid dispenser that can dispense liquid in two dispensing modes, and that allows switching the dispensing angle range for each dispensing mode. [Solution] The liquid dispenser 1 of the present disclosure comprises a dispenser body 2 having a flow path that guides the contents inside a container A to a discharge hole, and a nozzle having a discharge hole that discharges the pressurized contents to the outside, wherein the discharge hole has a central discharge hole 152c provided in the radial center when viewed from the front, and a shower discharge hole 112c provided radially outside the central discharge hole 152c, and the nozzle is characterized by having a nozzle rotation part 112 that rotates around the nozzle axis (central axis O4) to select whether to discharge the contents from the central discharge hole 152c or the shower discharge hole 112c, and a nozzle slide part 152 that has a shower discharge hole 112c and moves along the axis to switch the discharge angle range of the contents discharged from the discharge hole.

Description

Technical Field

[0001] The present disclosure relates to a liquid ejector.

Background Art

[0002] As an application of the liquid ejector, a herbicide may be contained in a container body, and the liquid ejector may be used to efficiently perform weeding by spraying the herbicide on weeds in a garden or the like. In addition, a device in which a pump or an aerosol is attached to the liquid ejector to enable spraying of a fixed amount is used (see, for example, Patent Document 1). These configurations enable efficient spraying of the content liquid.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in the ejector described in Patent Document 1, it is possible to switch between a state where the liquid is ejected linearly and a state where the liquid is ejected in a shower shape. However, when performing weeding by spraying a herbicide, in addition to the case where it is desired to eject in a shower shape within a wide angle range for efficient spraying, there may also be a case where it is desired to locally eject in a shower shape within a narrow angle range. However, in the liquid ejector described in Patent Document 1, since the ejection angle range of the liquid cannot be switched, there is still room for improvement in this regard.

[0005] The present disclosure has been made in view of such circumstances, and an object thereof is to provide a liquid ejector that can eject in two ejection modes and can switch the ejection angle range for each ejection mode.

Means for Solving the Problems

[0006] This disclosure was made to solve the above problems, and the liquid ejector of this disclosure is [1] A dispenser body having a flow path that guides the contents inside the container to the discharge hole, A nozzle having the aforementioned discharge hole for discharging the pressurized contents to the outside A liquid sprayer equipped with, The discharge port has a central discharge port located in the radial center when viewed from the front, and a shower discharge port located radially outside the central discharge port. The nozzle is characterized by having a nozzle rotation part that rotates around the axis of the nozzle to select whether to discharge the contents from the central discharge hole or the shower discharge hole, and a nozzle slide part that has the shower discharge hole and moves along the axis to switch the discharge angle range of the contents discharged from the discharge hole.

[0007] Furthermore, the liquid dispenser of this disclosure is [2] In the configuration described in [1] above, it is preferable that the nozzle rotating part has a connecting cylindrical part provided at the tip of the cylindrical part that partitions the flow path and has a communication hole that connects the inside and outside in the radial direction at a specific circumferential position, and the flow path selecting cylindrical part has a first recessed groove that guides the contents that have passed through the communication hole to the central discharge hole when the circumferential position coincides with the communication hole, and a second recessed groove provided at a circumferential position different from the first recessed groove that guides the contents that have passed through the communication hole to the shower discharge hole when the circumferential position coincides with the communication hole.

[0008] Furthermore, the liquid dispenser of this disclosure is [3] In the configuration described in [2] above, it is preferable that the flow path selection cylinder portion does not allow the contents from the flow path to pass to the discharge hole when the communication hole does not coincide with either the circumferential position of the first groove or the second groove.

[0009] Furthermore, the liquid dispenser of this disclosure is [4] In the configuration described in any of [1] to [3] above, the nozzle rotating part has a cylindrical outer wall portion that partitions the radially outer side of the nozzle flow path that guides the contents toward the shower discharge hole, the nozzle sliding part has an inner wall portion that partitions the radially inner side of the nozzle flow path, and the inner wall portion of the nozzle flow path preferably has a plurality of groove portions at circumferential positions, the groove portions having a circumferential width that widens radially outward.

[0010] Furthermore, the liquid dispenser of this disclosure is [5] In the configuration described in [4] above, it is preferable that the nozzle slide portion is axially movable with respect to the nozzle rotation portion between a wide-angle range discharge mode position in which the axial overlap between the outer wall portion and the groove portion of the inner wall portion is relatively large, and a narrow-angle range discharge mode position in which the axial overlap between the outer wall portion and the groove portion of the inner wall portion is relatively small.

[0011] Furthermore, the liquid dispenser of this disclosure is [6] In the configuration described in [4] or [5] above, it is preferable that the inner surface of the outer wall portion is inclined radially outward toward the front.

[0012] Furthermore, the liquid dispenser of this disclosure is [7] In the configuration described in any of [2] to [6] above, it is preferable that a spin groove is formed on the radially outer side of the central discharge hole in the nozzle slide portion to guide the contents from the first groove to the central discharge hole while causing them to swirl. [Effects of the Invention]

[0013] According to this disclosure, it is possible to provide a liquid dispenser that can dispense in two dispensing modes and that can switch the dispensing angle range for each dispensing mode. [Brief explanation of the drawing]

[0014] [Figure 1]A side cross-sectional view of a liquid ejector according to an embodiment of the present disclosure. [Figure 2] An enlarged side cross-sectional view of a nozzle portion used in a liquid ejector according to an embodiment of the present disclosure (wide-angle range ejection mode for shower ejection). [Figure 3] An enlarged front view of a nozzle portion used in a liquid ejector according to an embodiment of the present disclosure. [Figure 4] An enlarged side cross-sectional view of a nozzle portion used in a liquid ejector according to an embodiment of the present disclosure (narrow-angle range ejection mode for shower ejection). [Figure 5] An enlarged side cross-sectional view of a nozzle portion used in a liquid ejector according to an embodiment of the present disclosure (wide-angle range ejection (mist ejection) mode for central ejection). [Figure 6] An enlarged side cross-sectional view of a nozzle portion used in a liquid ejector according to an embodiment of the present disclosure (narrow-angle range ejection (linear ejection) mode for central ejection). [Figure 7] An enlarged side cross-sectional view of a nozzle portion used in a liquid ejector according to an embodiment of the present disclosure (when ejection stops).

MODE FOR CARRYING OUT THE INVENTION

[0015] (Configuration of the liquid ejector) An embodiment of the liquid ejector according to this disclosure will be described with reference to the drawings. In this specification, claims, abstract, and drawings, the side where the top wall of the cover body 55 (described later) is located is considered the upper side (upper side in Figure 1), and the side where the mounting cap 14 is provided is considered the lower side (lower side in Figure 1). The side where the nozzle slide portion 152 is provided is considered the front (left side in Figure 1), and the opposite side is considered the rear (right side in Figure 1). The direction perpendicular to the vertical and front-back directions (the direction perpendicular to the plane of the paper in Figure 1) is considered the left-right direction. Furthermore, the term "nozzle" is a concept that includes the nozzle rotation portion 112, the nozzle slide portion 152, and the nozzle flow path N, spin groove 152d, shower discharge hole 112c, and central discharge hole 152c (discharge hole) formed by these. Furthermore, radially outward refers to the direction away from the coaxial line along a straight line perpendicular to the coaxial line passing through the central axis O1, O3, central axis O4 (axis) or container axis O2, while radially inward refers to the direction toward the coaxial line along the said straight line. Furthermore, circumferential direction refers to the direction of rotation around the coaxial line.

[0016] The vertical orientation of the liquid dispenser 1 in this embodiment remains unchanged even when the liquid dispenser 1 is used in an inverted position such that the mounting cap 14 in Figure 1 is positioned above the top wall of the cover body 55. That is, even when the liquid dispenser 1 is in an inverted position, the top wall of the cover body 55 is positioned above the mounting cap 14.

[0017] The accompanying drawings of this disclosure are drawn to the same scale in the vertical, front-to-back, and left-to-right directions, and the aspect ratio of the liquid ejector 1 in the drawings represents the aspect ratio of the liquid ejector 1 of one embodiment of this disclosure. However, the configuration, shape, dimensional ratio, etc. of the liquid ejector 1 in the accompanying drawings are merely one embodiment of this disclosure. The present invention should be interpreted based on the wording of the claims and is not limited to the configuration, shape, dimensional ratio, etc. shown in the drawings.

[0018] As shown in Figure 1, the liquid dispenser 1 of this embodiment comprises a dispenser body 2 having a vertical supply cylinder section 10 attached to a container body A that contains liquid contents and forming a flow path that sucks up the contents in the container body A and guides them upward, and an injection cylinder section 11 connected to the upper part of the vertical supply cylinder section 10 and forming a flow path that guides the contents guided by the vertical supply cylinder section 10 to a nozzle, a pump 58 attached to the dispenser body 2 that sucks, pressurizes, and pumps the liquid contents in the container body A, a trigger section 51 that is held so as to be able to swing in the front-rear direction and drives the pump 58, an upper plate member 84 that extends from the vertical supply cylinder section 10 side toward the nozzle rotation section 112 side and has an elastic member 54 that provides a restoring force to the trigger section 51, and a nozzle member 3 attached to the dispenser body 2 that has a shower discharge hole 112c and a central discharge hole 152c (discharge hole) for discharging liquid forward.

[0019] Unless otherwise specified, each component of the liquid dispenser 1 is assumed to be a molded product made of synthetic resin.

[0020] The sprayer body 2 comprises a vertical supply cylinder section 10 extending in the vertical direction, and an injection cylinder section 11 positioned in front of the vertical supply cylinder section 10, with its inner side communicating with the interior of the vertical supply cylinder section 10. A mounting cap 14 for attaching to container body A is attached to the vertical supply cylinder section 10 of the sprayer body 2.

[0021] As shown in Figure 1, the vertical supply cylinder section 10 comprises a top-shaped outer cylinder 12 and an inner cylinder 13 fitted inside the outer cylinder 12.

[0022] The outer cylinder 12 comprises a large-diameter portion 12a, a small-diameter portion 12b positioned above the large-diameter portion 12a and having a smaller diameter than the large-diameter portion 12a, and an annular connecting portion 12c connecting the upper end of the large-diameter portion 12a and the lower end of the small-diameter portion 12b, and is formed in a two-stage cylindrical shape that tapers in diameter from bottom to top. The upper part of the small-diameter portion 12b is closed by a top wall portion 12d.

[0023] The inner cylinder 13 comprises a large-diameter portion 13a, a small-diameter portion 13b positioned above the large-diameter portion 13a and having a smaller diameter than the large-diameter portion 13a, and a flange portion 13c connecting the upper end of the large-diameter portion 13a and the lower end of the small-diameter portion 13b, and is formed in a two-stage cylindrical shape that tapers in diameter from bottom to top. The upper part of the small-diameter portion 13b is fitted to the inner circumferential surface of the small-diameter portion 12b of the outer cylinder 12.

[0024] The upper part of the inverted fitting cylinder 16b of the inverted adapter 16, which will be described later, is fitted into the small diameter portion 13b. The flange portion 13c of the inner cylinder 13 is located below the annular connecting portion 12c of the outer cylinder 12, while maintaining a gap S1 between it and the annular connecting portion 12c of the outer cylinder 12.

[0025] Below the large-diameter portion 12a of the outer cylinder 12, an annular flange portion 13d is formed that protrudes radially outward from the large-diameter portion 13a of the inner cylinder 13. The flange portion 13d is disposed within the upper end of a mounting cap 14 that is attached (for example, screwed) to the mouth A1 of the container body A, and locks the upper end of the mounting cap 14 so that it can rotate around its axis.

[0026] Furthermore, the central axis O1 of the vertical supply cylinder section 10, which is composed of the outer cylinder 12 and the inner cylinder 13, is eccentrically rearward with respect to the container axis O2 of the container body A.

[0027] A valve seat 35 is provided on the inner circumferential surface of the inner cylinder 13, in a portion located below the inlet hole 38 from the pump 58 and above the upper end of the inverted fitting cylinder 16b of the inverted adapter 16, to support the ball valve 36 from below. The valve seat 35 is arranged coaxially with the central axis O1, and the seating surface of the ball valve 36 is formed as an inclined surface that slopes downward toward the radially inward direction.

[0028] The ball valve 36 is disposed inside the inner cylinder 13 in a state where it is seated detachably on the seating surface of the valve seat 35. The ball valve 36 connects and separates a space located above the valve seat 35 and a space located below the valve seat 35 within the inner cylinder 13.

[0029] As shown in Figure 1, the cylinder portion 40 is integrally formed in the outer cylinder 12 in a portion located below the injection cylinder portion 11, which will be described later. The cylinder portion 40 is positioned between the injection cylinder portion 11 and the flange portion 13c, protruding forward from the outer cylinder 12 and opening forward.

[0030] As shown in Figure 1, a valve body 37 is positioned above the valve seat 35. The valve body 37 connects and blocks the flow path within the vertical supply cylinder 10 by the flange 37a abutting against the upper surface of a stepped portion 37b provided on the inner circumferential surface of the inner cylinder 13.

[0031] The injection cylinder portion 11 protrudes forward from the outer cylinder 12 (small diameter portion 12b) above the flange 37a of the valve body 37, and guides the contents of the vertical supply cylinder portion 10 to the discharge holes (shower discharge hole 112c and central discharge hole 152c). In this embodiment, the central axis O3 of the injection cylinder portion 11 is approximately perpendicular to the central axis O1 of the vertical supply cylinder portion 10. Furthermore, the inside of the injection cylinder portion 11 communicates with the inside of the vertical supply cylinder portion 10 through the communication hole 104.

[0032] As shown in Figure 1, below the injection cylinder 11, a trigger unit 51 is positioned in front of the vertical supply cylinder 10 so as to be able to swing (move) backward while biased forward. Behind the trigger unit 51, there is a piston 52 that moves in the forward and backward directions in conjunction with the swinging of the trigger unit 51, and a cylinder 53 whose internal pressure increases and decreases with the movement of the piston 52. The trigger unit 51 is biased forward by an elastic member 54, which is integrally provided on an upper plate member 84 positioned above the injection cylinder 11, at its base portion 84a. The vertical supply cylinder 10 and the injection cylinder 11 are covered from above and from the left and right by a cover body 55. In this embodiment, the piston 52 and cylinder 53 constitute the pump 58. In the example of Figure 1, the cylinder 53 is housed in a cylinder cylinder portion 40, but the part that functions as the cylinder 53 may be integrally formed in the ejector body 2 without a cylinder cylinder portion 40.

[0033] The aforementioned ball valve 36, valve body 37, trigger unit 51, pump 58 (piston 52, cylinder 53), and elastic member 54 enable a pump function in which the contents are circulated from the vertical supply cylinder 10 through the injection cylinder 11 to the discharge port side by the backward swinging of the trigger unit 51.

[0034] The inside of the cylinder 53 is in communication with the inside of the vertical supply cylinder 10. The cylinder 53 comprises an outer cylinder portion 60 that opens toward the front, a rear wall portion 61 that closes the rear opening of the outer cylinder portion 60, and a top-shaped cylindrical piston guide 62 that protrudes toward the front from the central part of the rear wall portion 61 and has a closed front end.

[0035] The piston guide 62 has an inner opening facing rearward, and a fitting projection 41, which protrudes forward from the rear wall of the cylinder portion 40 (the small diameter portion 12b of the outer cylinder 12), is fitted into this opening.

[0036] The outer cylinder portion 60 is fitted inside the cylinder portion 40. The inner circumferential surface of the cylinder portion 40 and the outer circumferential surface of the outer cylinder portion 60 are in close contact at both ends in the front-rear direction. On the other hand, an annular gap S2 is secured in the intermediate portion between the inner circumferential surface of the cylinder portion 40 and the outer circumferential surface of the outer cylinder portion 60, located between the two ends in the front-rear direction.

[0037] The outer cylinder portion 60 has a first ventilation hole 63 that connects the inside of the outer cylinder portion 60 with the gap S2. The annular connecting portion 12c of the outer cylinder 12 has a second ventilation hole 64 that connects the gap S2 with the gap S1 defined between the annular connecting portion 12c of the outer cylinder 12 and the flange portion 13c of the inner cylinder 13.

[0038] Furthermore, a third ventilation hole 65 is formed in the flange portion 13c of the inner cylinder 13, which connects the gap S1 with the large diameter portion 13a of the inner cylinder 13 and the inside of the mounting cap 14.

[0039] The cylinder 53 is provided with a connecting pipe portion 68 that protrudes toward the rear. The connecting pipe portion 68 is located on the rear wall portion 61 of the cylinder 53, above the piston guide 62, and is inserted through a through hole 66 in the outer cylinder 12. This connects the inside of the cylinder 53 to the inside of the vertical supply pipe portion 10 via the inlet hole 38.

[0040] The inside of the communicating cylinder 68 is in communication with the space located between the valve body 37 and the ball valve 36 inside the inner cylinder 13. As a result, the inside of the cylinder 53 is in communication with the space located between the valve body 37 and the ball valve 36 inside the inner cylinder 13 through the communicating cylinder 68. Therefore, the ball valve 36 is capable of switching between communication between the inside of container body A and the inside of cylinder 53 and blocking that communication.

[0041] Specifically, the ball valve 36 closes when the inside of the cylinder 53 is pressurized, blocking communication between the inside of container A and the inside of the cylinder 53 through the vertical supply cylinder 10. When the pressure inside the cylinder 53 is reduced, it displaces upward and opens, allowing communication between the inside of container A and the inside of the cylinder 53 through the vertical supply cylinder 10.

[0042] As shown in Figure 1, the valve body 37 protrudes toward the ball valve 36. This downwardly protruding portion of the valve body 37 functions as a valve retaining portion 37c. The valve retaining portion 37c contacts the ball valve 36 when the ball valve 36 is open, restricting further upward displacement of the ball valve 36.

[0043] The piston 52 comprises a cylindrical connecting portion 70 connected to the trigger portion 51, and a piston cylinder 71 located behind the connecting portion 70 and having a larger diameter than the connecting portion 70, and is formed as a cylindrical shape with an opening to the rear.

[0044] Furthermore, the cylinder 53 and piston 52 are arranged on a common axis extending along the front-rear direction.

[0045] The piston cylinder 71 comprises a piston body portion 72 that opens toward the rear and into which a piston guide 62 is inserted, and a sliding cylinder portion 73 that protrudes radially outward from the rear end of the piston body portion 72 and, for example, slides closely against the inner circumferential surface of the outer cylinder portion 60.

[0046] The piston body 72 is formed with an inner diameter larger than the outer diameter of the piston guide 62. In the illustrated example, there is a small gap between the inner circumferential surface of the piston body 72 and the outer circumferential surface of the piston guide 62.

[0047] The sliding cylinder portion 73 is formed in a tapered shape, gradually increasing in diameter from the center in the front-rear direction towards the front and rear, and the lip portions 73a located at the rear end and front end are in sliding contact with the inner circumferential surface of the outer cylinder portion 60.

[0048] The connecting portion 70 of the piston 52 is connected to the trigger portion 51 via a connecting shaft 86, which will be described later. As a result, the piston 52 is biased forward by the biasing force of the elastic member 54 together with the trigger portion 51, and moves backward as the trigger portion 51 swings backward, and is pushed into the cylinder 53.

[0049] When the trigger portion 51 is in its furthest forward swinging position (forward movement position), the sliding cylinder portion 73 of the piston 52 closes the first vent hole 63. Then, when the piston 52 moves backward by a predetermined amount due to the backward swinging of the trigger portion 51, the sliding cylinder portion 73 opens the first vent hole 63. As a result, the inside of the container body A communicates with the outside through the gap between the large diameter portion 13a and the inverted mounting cylinder 16c, the third vent hole 65, the second vent hole 64, and the first vent hole 63.

[0050] As shown in Figure 1, the trigger section 51 comprises a main plate member 80 having a front surface that curves so as to be convex toward the rear when viewed from the left and right in a side view, and a pair of side plate members 81 that rise toward the rear from the left and right side edges of the main plate member 80.

[0051] A pair of connecting plates 82 are formed at the upper ends of the pair of side plate members 81, extending upward to the sides of the injection cylinder 11 and sandwiching the injection cylinder 11 from the left and right directions. Rotating shaft portions 83 are provided projecting outward in the left and right directions from the pair of connecting plates 82. These rotating shaft portions 83 are rotatably supported by bearing portions 84b provided on the upper plate member 84. As a result, the trigger portion 51 is able to swing in the front-rear direction around the rotating shaft portions 83.

[0052] The trigger portion 51 has an opening 51a that penetrates the main plate member 80 in the front-rear direction, and a connecting cylinder 85 is formed so as to extend rearward from the peripheral edge of the opening 51a.

[0053] A pair of connecting shafts 86 are formed on the rearward portion of the inner circumferential surface of the connecting cylinder 85, protruding inwards from left to right. These connecting shafts 86 are inserted into connecting holes 70a formed in the connecting portion 70 of the piston 52. In this way, the trigger portion 51 and the piston 52 are connected to each other.

[0054] Furthermore, the connecting portion 70 of the piston 52 is rotatable around its axis relative to the connecting shaft 86 and is connected so as to be movable by a predetermined amount in the vertical direction. As a result, the piston 52 can move back and forth in accordance with the swinging motion of the trigger portion 51 in the front-to-back direction.

[0055] A horizontal plate-shaped upper plate member 84 is attached above the injection cylinder portion 11. The upper plate member 84 comprises a base portion 84a, a bearing portion 84b that supports the rotation shaft portion 83 of the trigger portion 51, and an elastic member 54 that biases the trigger portion 51. The elastic member 54 is formed on both the left and right sides of the upper plate member 84 in a forward-convex arc shape when viewed from the left and right directions, and extends to below the injection cylinder portion 11 (see Figure 1), and is integrally formed with the upper plate member 84.

[0056] The elastic member 54 is formed in a concentric arc shape when viewed from the left and right, and comprises a pair of leaf springs arranged front to back.

[0057] Of the pair of leaf springs, the one located at the front is designated as the main leaf spring 54a, and the one located at the rear is designated as the secondary leaf spring 54b.

[0058] The lower ends of the main leaf spring 54a and the secondary leaf spring 54b are integrally connected via an arc-shaped folded portion. A locking piece 54d is provided protruding from the front of the folded portion, and this locking piece 54d engages with the trigger portion 51 (see Figure 1). As a result, the elastic member 54 biases the trigger portion 51 forward via the locking piece 54d.

[0059] The upper end of the main plate member 80 of the trigger section 51 is in contact with the lower part of the connecting body 160 (described later) from the rear due to the biasing force of the elastic member 54. As a result, the trigger section 51 is positioned in its furthest forward swinging position.

[0060] Furthermore, when the trigger portion 51 is pulled backward from its furthest forward swinging position, the elastic member 54 elastically deforms so as to move the locking piece 54d and the folded portion backward.

[0061] In this embodiment, below the vertical supply cylinder section 10, there are upright / inverted adapter 16, upright / inverted second adapter 17, and upright / inverted closure adapter 18, which are suitable for using the liquid ejector 1 not only in an upright position but also in an inverted position (a position in which the mounting cap 14 is located above the top wall of the cover body 55).

[0062] As shown in Figure 1, the inverted adapter 16 comprises an inverted flange 16a extending radially on the radially inner side of the mounting cap 14, an inverted fitting cylinder 16b extending vertically from the inverted flange 16a along the central axis O1 of the vertical supply cylinder portion 10, and an inverted mounting cylinder 16c extending downward from the radially outer edge of the inverted flange 16a.

[0063] The inverted fitting cylinder 16b has its upper part fitted into the small-diameter portion 13b of the inner cylinder 13, and its lower part extends below the inverted flange 16a, fitting onto the inner surface of the second inverted fitting cylinder 17b of the second inverted adapter 17, which will be described later. The inverted mounting cylinder 16c has its upper outer surface fitted onto the inner surface of the large-diameter portion 13a of the inner cylinder 13, and the second inverted adapter 17 and the inverted closure adapter 18, which will be described later, are mounted on the inner side of its lower part. Multiple inverted suction openings 16d are provided on the side of the inverted mounting cylinder 16c. When the trigger portion 51 is biased forward in the inverted position and negative pressure is generated inside the cylinder 53, the contents are drawn in not only from the lower end of the pipe 15 but also from these inverted suction openings 16d. In the inverted position, the valve body 19 for the upright and inverted positions moves to the upper part of the storage space S due to its own weight, so the inverted suction opening 16d is opened, and the contents drawn into the storage space S are supplied to the pump 58 via the second suction opening 17a1. Even if the contents in the container A decrease and the liquid level of the contents is above the lower end of the pipe 15, as long as negative pressure is generated in the cylinder 53, the contents can continue to be drawn in through the inverted suction opening 16d and sent to the pump 58.

[0064] The inverted second adapter 17 comprises an inverted second fitting cylinder 17b extending vertically along the central axis O1, an opening flange 17a having a second suction opening 17a1 located near the approximate center height of the inverted second fitting cylinder 17b, an inverted second mounting cylinder 17c extending radially outward downward from the lower end of the inverted second fitting cylinder 17b, and an inverted storage opening 17d provided at the front of the inverted second mounting cylinder 17c. The space between the outer surface of the front of the inverted second mounting cylinder 17c and the inverted mounting cylinder 16c of the inverted adapter 16 functions as a storage space S for temporarily storing contents when the liquid dispenser 1 is used in an inverted position.

[0065] The upright inverted occluding adapter 18 comprises an occluding flange 18a extending radially inside the container body A, a mounting cylinder 18b that hangs down from the lower surface of the occluding flange 18a along the central axis O1 and to which a pipe 15 for sucking the contents of the container body A is attached, and an occluding mounting cylinder 18c erected on the radial outer edge of the occluding flange 18a. The occluding flange 18a is provided with a first suction opening 18a1 concentrically with the central axis O1. As shown in Figure 1, the lower surface of the upright inverted adapter 16 is closed when the occluding mounting cylinder 18c is attached to the inner surface of the upright inverted mounting cylinder 16c of the upright inverted adapter 16. In the upright position of the liquid dispenser 1, the contents of the container body A can be supplied into the pump 58 through the pipe 15, the first suction opening 18a1, and the second suction opening 17a1. Furthermore, when the liquid ejector 1 is in an inverted position, the contents of the container A can be supplied into the pump 58 not only through the pipe 15, the first suction opening 18a1, and the second suction opening 17a1, but also through the inverted suction opening 16d, the upright / inverted storage opening 17d, and the second suction opening 17a1.

[0066] As shown in Figures 1 and 2, the nozzle member 3 comprises a nozzle rotating part 112, a nozzle sliding part 152, and a connecting body 160, and is positioned on the front side of the ejector body 2. The nozzle rotating part 112 is attached to the injection cylinder part 11 via the connecting body 160. The nozzle sliding part 152 is attached to the front of the nozzle rotating part 112. The nozzle rotating part 112 is rotatable around the central axis O4 relative to the connecting body 160. The nozzle sliding part 152 is not rotatable around the central axis O4 relative to the nozzle rotating part 112, but is movable back and forth along the central axis O4.

[0067] The nozzle rotating part 112 is attached to the outer surface of the first fitting cylinder 160b which protrudes from the front side of the connecting body 160. The nozzle rotating part 112 has a second fitting cylinder 112a (see Figure 2) which fits onto the first fitting cylinder 160b, a nozzle front plate 112m which closes the front end of the second fitting cylinder 112a, and a central cylinder 112d (flow path selection cylinder) which extends radially inward from the nozzle front plate 112m toward the rear along the central axis O4. An external locking claw 112f is provided on the inner circumferential surface of the second fitting cylinder 112a, and an internal locking claw 160f is provided on the outer circumferential surface of the first fitting cylinder 160b. The engagement of the internal locking claws 160f and the external locking claws 112f restricts the second fitting cylinder 112a and, consequently, the nozzle rotating part 112 from detaching from the first fitting cylinder 160b and, consequently, from the connecting body 160. In this state, the nozzle rotating part 112 is rotatable relative to the connecting body 160 around a common central axis O4 shared by the second fitting cylinder 112a and the first fitting cylinder 160b.

[0068] (Discharge from the shower nozzle) Figures 2 and 4 show the state in which the nozzle rotating part 112 is rotated to discharge from the shower discharge hole 112c. As shown in Figure 3, the nozzle rotating part 112 has a roughly triangular shape with a chamfered edge when viewed from the front, and the words "Stop", "Shower", and "Center" are engraved or printed on the outer surface of the second fitting cylinder 112a. When the nozzle rotating part 112 is rotated so that the word "Shower" is on the upper surface, the flow path of the contents is switched so that the contents are discharged from the shower discharge hole 112c, as shown in Figures 2 and 4. A central cylinder 112d is provided protruding from the inside of the second fitting cylinder 112a of the nozzle rotating part 112, which is liquid-tight and rotatably fitted onto the outer circumference of the connecting cylinder portion 160d of the connecting body 160. The central cylinder 112d is integrally formed with an outer wall portion 115 that branches radially outward from a position approximately in the center along the central axis O4. As shown in Figure 2, a second groove 168a extending in the front-rear direction is formed on the inner surface of the central cylinder 112d at two locations in the circumferential direction. In addition, a third communication hole 168c is provided at the base end of the outer wall portion 115, i.e., at the branching point with the central cylinder 112d. When the circumferential position of the second groove 168a coincides with the first communication hole 160e (communication hole) that connects the radial inside and outside at a specific circumferential position of the connecting cylinder portion 160d (states in Figures 2 and 4), the contents that have been guided radially outward from the second communication hole 162 through the first communication hole 160e are further guided radially inward via the third communication hole 168c and led to the shower discharge hole 112c, which will be described later (see arrow in Figure 2). In other words, the second groove 168a and the third communication hole 168c are provided at approximately the same circumferential position on the central cylinder 112d and the outer wall portion 115.

[0069] In Figure 2, the flow path that guides the contents from the second communication hole 162 through the first communication hole 160e to the central discharge hole 152c is blocked.

[0070] A sealing cylinder portion 112g is provided protruding from the circumferential position between the central cylinder 112d and the second fitting cylinder 112a, and contacts the front inner circumference of the first fitting cylinder 160b.

[0071] As shown in Figure 2, a cylindrical outer wall portion 115 branches out radially outward from approximately the center position along the central axis O4 of the central cylinder 112d, extending forward. The outer wall portion 115 partitions the radially outer side of the nozzle flow path N that guides the contents to the shower discharge hole 112c. Figure 2 shows the nozzle configuration in a wide-angle discharge mode in which the contents are dispersed and discharged radially over a wide-angle range from the shower discharge hole 112c to the outside.

[0072] A cylindrical inner wall portion 117 is positioned in the space radially inward of the outer wall portion 115. The inner wall portion 117 is a cylindrical part that protrudes rearward from the nozzle plate 152a of the nozzle slide portion 152 and is positioned concentrically with the central axis O4. As shown in Figure 2, the inner wall portion 117 gradually expands in diameter toward the front, and the front part is further uniformly expanded radially outward. A groove portion 117a is formed in the expanded area of ​​the front part, recessed radially inward.

[0073] Furthermore, a second fitting cylinder 112a is provided on the radially outer side of the outer wall portion 115 of the nozzle rotating portion 112. The second fitting cylinder 112a is fitted radially inside the slide outer cylinder 152e provided on the nozzle slide portion 152 side so as to be axially movable, and guides the nozzle slide portion 152 in the axial direction. As shown in Figure 2, the locking projection 112k1 provided on the second fitting cylinder 112a engages with the engaging projection 152f provided on the slide outer cylinder 152e in an undercut manner, thereby locking the nozzle slide portion 152 in the wide-angle range discharge mode position shown in Figure 2.

[0074] In the wide-angle discharge mode, the nozzle flow path N is partitioned at a radial position between the outer wall portion 115 and the groove portion 117a of the inner wall portion 117 (see Figure 2). The radial distance (radial height) between the radial inner surface of the outer wall portion 115 and the radial outer surface of the inner wall portion 117 at the front end (outflow side end) of the nozzle flow path N is configured to be approximately the same as the radial distance (radial height) at the rear end (inflow side end) of the nozzle flow path N. The nozzle flow path N is the region in the axial position where the groove portion 117a is formed, within the region enclosed by the outer wall portion 115 and the inner wall portion 117.

[0075] The inner surface of the outer wall portion 115 is inclined radially outward toward the front from the starting point (rear end position) of the nozzle flow path N. However, it is not necessary to provide a radial outward inclination toward the front on the inner surface of the outer wall portion 115.

[0076] The radial position of the outer surface of the inner wall portion 117 is also inclined radially outward from the starting position (rear end position) to the ending position (front end position) of the nozzle flow path N.

[0077] Furthermore, as shown in Figures 2 and 3, multiple grooves 117a are intermittently arranged at 12 locations in the circumferential direction on the outer surface of the front part of the inner wall 117. The grooves 117a have a substantially semicircular shape when viewed from the front (see Figure 3). Due to this configuration, the circumferential width is small at the bottom of the grooves 117a, so the contents that pass through the grooves 117a are guided radially outward. Therefore, at the front end (i.e., the shower discharge hole 112c), which is the end point of the nozzle flow path N, the contents can be ejected forcefully in a shower-like manner while appropriately directing them radially outward (large discharge angle). The number of grooves 117a can be arbitrarily determined according to the required discharge amount, etc. Also, as shown in Figures 2 and 3, the nozzle opening 152b provided on the nozzle plate 152a is divided into four circumferential sections by radially extending dividing walls 153, and the contents are discharged to the outside while the circumferential flow path width is also limited by the dividing walls 153.

[0078] In contrast, if the user wants to dispense the contents in a narrow-angle range discharge mode, which dispenses the contents only in a narrow radial range outward from the discharge hole, the user grasps the dispenser body 2 and pulls the nozzle slide part 152 forward (to the left in Figure 2), moving it forward relative to the nozzle rotation part 112. As shown in Figure 4, this operation causes the engaging projection 152f to overcome the locking projection 112k1, releasing the undercut engagement and moving to the narrow-angle range discharge mode position. The engaging projection 152f, having overcome the locking projection 112k1, comes into contact with the anti-disengagement projection 112k2, thereby preventing the engagement between the slide outer cylinder 152e of the nozzle slide part 152 and the second fitting cylinder 112a of the nozzle rotation part 112 from disengaging.

[0079] In the narrow-angle discharge mode position shown in Figure 4, as the inner wall portion 117 moves forward, the axial overlap between the inner surface of the outer wall portion 115 and the groove portion 117a of the inner wall portion 117 (the axial range of the nozzle flow path N) is reduced to less than half, and the area between the outer wall portion 115 and the inner wall portion 117 that is not the nozzle flow path N increases. In this area that is not the nozzle flow path N, the radial distance between the outer wall portion 115 and the inner wall portion 117 increases. With this configuration, the contents that are pumped forward through the first communication hole 160e, the second recessed groove 168a, and the third communication hole 168c enter the space between the inner surface of the outer wall portion 115 and the outer surface of the inner wall portion 117, which has a radial distance longer than the nozzle flow path N, thereby reducing the forward movement speed (momentum). Subsequently, the contents are discharged from the shower discharge hole 112c through the space (nozzle flow path N) between the inner surface of the outer wall portion 115 and the groove portion 117a, which has a shorter axial distance than in the wide-angle range discharge mode. However, as described above, the movement speed of the contents is reduced, so they are not diffused radially as much as in the wide-angle range discharge mode and are discharged within a narrower radial angle range (smaller discharge angle).

[0080] Furthermore, in the narrow-angle discharge mode position, there may be no overlapping region in the axial direction between the inner surface of the outer wall portion 115 and the groove portion 117a of the inner wall portion 117 (the region of the nozzle flow path N). Also, the shower discharge hole 112c shall be defined at the front end position whichever is in front of either the front end of the outer wall portion 115 or the front end of the groove portion 117a of the inner wall portion 117.

[0081] (Discharge from the central discharge port) Figures 5 and 6 show the state in which the nozzle rotating part 112 is rotated to discharge from the central discharge hole 152c. When the nozzle rotating part 112 is rotated so that the word "central" on the outer surface of the second fitting cylinder 112a is facing upwards, the flow path of the contents is switched so that the contents are discharged from the central discharge hole 152c, as shown in Figures 5 and 6. In Figure 5, a first groove 168b is formed in front of the first communication hole 160e (communication hole) in the central cylinder 112d, extending in the front-rear direction and guiding the contents that have passed through the first communication hole 160e forward. The first groove 168b is provided at two locations in the circumferential direction, different from the second groove 168a mentioned above. Furthermore, on the outer surfaces of the connecting cylinder portion 160d and the forward projection portion 160d1 located further forward of the first groove 168b, a third groove 168d and a guide groove 168e are provided to guide the contents that have passed through the first groove 168b to the central discharge hole 152c. When the circumferential position of the first groove 168b coincides with the first communication hole 160e (communication hole) that connects the radial inside and outside at a specific circumferential position of the connecting cylinder portion 160d (as shown in Figures 5 and 6), the contents that have been guided forward from the second communication hole 162 through the first communication hole 160e are further guided forward via the first groove 168b, the third groove 168d and the guide groove 168e, and led to the central discharge hole 152c (see arrow in Figure 5). In other words, the connecting cylindrical portion 160d and the forward projection portion 160d1 are provided with a first communication hole 160e, a third recessed groove 168d, and a guide groove 168e at substantially the same circumferential position.

[0082] In Figure 5, the flow path that guides the contents that have passed from the second communication hole 162 through the first communication hole 160e to the shower discharge hole 112c is blocked.

[0083] As shown in Figure 5, on the radially outer side of the central discharge hole 152c in the nozzle slide portion 152, a central opening 152c1 is provided at the front, and a spin groove 152d is formed at the rear to guide the contents from the first groove 168b to the central discharge hole 152c. The spin groove 152d guides the contents that have been guided forward via the first groove 168b, the third groove 168d, and the guide groove 168e to the central discharge hole 152c while rotating around the central axis O4, and the contents are discharged in a mist-like manner from the central discharge hole 152c (large discharge angle).

[0084] In the wide-angle range discharge (mist discharge) mode from the central discharge hole 152c, as shown in Figure 5, the locking projection 112k1 provided on the second fitting cylinder 112a engages with the engaging projection 152f provided on the slide outer cylinder 152e in an undercut manner. As a result, the nozzle slide portion 152 is locked in the wide-angle range discharge mode position. The front end of the forward projection 160d1, which is connected to the front end of the connecting cylinder portion 160d, abuts against the rear surface of the spin groove 152d. Therefore, the contents that flow into the spin groove 152d via the guide groove 168e are increased in flow velocity as they swirl within the narrow spin groove 152d, and are discharged in a mist form over a wide angle range from the central discharge hole 152c.

[0085] In contrast, if the user wants to discharge the contents in a narrow-angle range discharge (linear discharge) mode, where the contents are discharged only in a narrow radial range outward from the central discharge hole 152c, the user grasps the nozzle slide part 152 while holding the dispenser body 2 and pulls it forward (to the left in Figure 5), moving it forward relative to the nozzle rotation part 112 as shown in Figure 6. In the narrow-angle range discharge (linear discharge) mode discharged from the central discharge hole 152c, a gap is created between the front end of the forward projection part 160d1 connected to the front end of the connecting cylinder part 160d and the rear surface of the spin groove 152d. As a result, the contents supplied to the spin groove 152d via the guide groove 168e have their flow velocity reduced in the wide space between the front end of the forward projection part 160d1 and the rear surface of the spin groove 152d, and are discharged in a linear narrow-angle range from the central discharge hole 152c (small discharge angle).

[0086] The connecting body 160 has a third fitting cylinder 160a that fits externally in front of the injection cylinder part 11, a front wall 160c that closes the front end of the third fitting cylinder 160a, a first fitting cylinder 160b that protrudes forward from the front wall 160c, and a connecting cylinder part 160d that protrudes forward from the front wall 160c inside the first fitting cylinder 160b (see FIGS. 1 and 2).

[0087] In the region of the front wall 160c located inside the connecting cylinder part 160d, a second communication hole 162 that communicates the first communication hole 160e with the inside of the injection cylinder part 11 is formed. Thereby, the internal space of the vertical supply cylinder part 10 communicates with the shower discharge hole 112c or the central discharge hole 152c through the communication hole 104, the inside of the injection cylinder part 11, the second communication hole 162, the first communication hole 160e, and the second concave groove 168a or the first concave groove 168b.

[0088] (Discharge stop from the discharge hole) FIG. 7 shows the state of the nozzle member 3 in a discharge stop state where the content is not discharged from the discharge hole during storage of the liquid ejector 1 or the like. When the nozzle rotation part 112 is rotated so that the character "stop" on the outer surface of the second fitting cylinder 112a becomes the upper surface, the discharge stop state shown in FIG. 7 is obtained. In this discharge stop state, as can be seen from a comparison with FIGS. 2 and 5, the first communication hole 160e of the connecting cylinder part 160d does not exist at the same circumferential direction position as either the second concave groove 168a or the first concave groove 168b. Therefore, the content supplied into the connecting cylinder part 160d through the second communication hole 162 cannot be discharged from either the shower discharge hole 112c or the central discharge hole 152c, and the nozzle is in a discharge stop state.

[0089] (Operation of the liquid ejector) Next, we will describe how to use the liquid dispenser 1 configured as described above. It is assumed that by gripping the nozzle rotation part 112 and rotating it around the central axis O4, shower discharge or central discharge is selected according to the user's intention, and further, by moving the nozzle slide part 152 along the central axis O4, a wide-angle range discharge mode or a narrow-angle range discharge mode is selected according to the user's intention. It is also assumed that by operating the trigger part 51 multiple times, the contents are filled into each part of the liquid dispenser 1, and the contents can be drawn up from the vertical supply cylinder part 10.

[0090] In the state shown in Figure 1, when the trigger portion 51 is pulled backward against the biasing force of the elastic member 54, the piston 52 retracts as the trigger portion 51 moves backward, allowing the contents of the cylinder 53 to be introduced into the inner cylinder 13 of the vertical supply cylinder portion 10 through the connecting cylinder portion 68 and the inlet hole 38. The contents, with increased pressure, introduced into the inner cylinder 13 push down the ball valve 36 to close it and push up the valve body 37 to open it.

[0091] As a result, the contents ejected from the cylinder 53 can be guided through the communication hole 104, the injection cylinder portion 11, and the second communication hole 162 into the nozzle flow path N or the spin groove 152d.

[0092] When shower discharge is selected by the rotation of the nozzle rotation part 112, and the nozzle slide part 152 is in the wide-angle range discharge mode position (the position shown in Figure 2), the contents introduced into the nozzle flow path N diffuse mainly radially and are discharged to the outside from the shower discharge hole 112c. In particular, in this embodiment, the front end (front end inclined part 115a) on the inner surface of the outer wall part 115 is inclined radially outward toward the front with respect to the central axis O4. Therefore, the contents that have passed through the nozzle flow path N are discharged to the outside while diffusing mainly radially outward.

[0093] When shower discharge is selected by the rotation of the nozzle rotation part 112, and the nozzle slide part 152 is in the narrow-angle range discharge mode position (the position shown in Figure 4), the axial overlap between the inner surface of the outer wall part 115 and the groove part 117a of the inner wall part 117 (the axial range of the nozzle flow path N) is reduced to less than half compared to the wide-angle range discharge mode, and the area between the outer wall part 115 and the inner wall part 117 that is not the nozzle flow path N increases. With this configuration, the contents that are pumped forward through the first communication hole 160e, the second recessed groove 168a and the third communication hole 168c enter the space between the inner surface of the outer wall part 115 and the outer surface of the inner wall part 117, which has a longer radial distance than the nozzle flow path N, thereby reducing the forward movement speed (momentum). Consequently, the contents are discharged within a narrow radial angle range without being diffused radially as much as in the wide-angle range discharge mode.

[0094] When the nozzle rotation part 112 rotates to select central discharge, and the nozzle slide part 152 is in the wide-angle range discharge mode position (the position shown in Figure 5), pulling the trigger part 51 backward causes the contents, which have been pressurized forward via the second communication hole 162, the first communication hole 160e, the first recessed groove 168b, the third recessed groove 168d, and the guide groove 168e, to be guided to the central discharge hole 152c while rotating around the central axis O4 within the spin groove 152d, and then discharged in a mist from the central discharge hole 152c.

[0095] When the rotation of the nozzle rotation part 112 selects central discharge and the nozzle slide part 152 is in the narrow-angle range discharge mode position (the position shown in Figure 6), pulling the trigger part 51 backward causes the contents, which have been pressurized forward via the second communication hole 162, the first communication hole 160e, the first recessed groove 168b, the third recessed groove 168d, and the guide groove 168e, to be guided into the spin groove 152d. However, because there is a gap between the front end of the forward projection part 160d1 and the rear surface of the spin groove 152d, the contents supplied to the spin groove 152d via the guide groove 168e have their flow velocity reduced in this gap and are discharged linearly and within a narrow angle range from the central discharge hole 152c.

[0096] Thus, in this embodiment, by simply switching the circumferential position of the nozzle rotation part 112 and the axial position of the nozzle slide part 152, the contents can be discharged in two discharge modes, shower discharge and central discharge, each time the trigger part 51 is pulled backward, and the discharge angle range can be switched for each discharge mode.

[0097] Subsequently, when the operation of pulling the trigger 51 is stopped and the trigger 51 is released, the elastic restoring force of the elastic member 54 biases the trigger 51 forward and returns it to its original position, causing the piston 52 to move forward. As a result, negative pressure is generated inside the cylinder 53, and when the liquid dispenser 1 is in an upright position, this negative pressure can draw the contents of the container A into the vertical supply cylinder 10 through the pipe 15, the first suction opening 18a1, and the second suction opening 17a1.

[0098] At this time, the ball valve 36 moves upward away from the valve seat 35, and the newly drawn contents are introduced into the cylinder 53. This prepares the cylinder for the next discharge. At this time, the valve body 37 is closed by the flange 37a contacting the upper surface of the stepped portion 37b due to the weight of the valve body 37 itself and the elastic force from the spring portion 37d. The negative pressure inside the cylinder 53 also acts in the direction that closes the valve body 37. The upward movement of the ball valve 36 is restricted by the valve retaining portion 37c. In addition, the valve body 19 for the upright and inverted positions closes the upright and inverted storage opening 17d due to its own weight and the negative pressure inside the cylinder 53, thereby suppressing the introduction of air into the pump 58 via the inverted suction opening 16d.

[0099] On the other hand, when the liquid dispenser 1 is used in an inverted position (a position in which the mounting cap 14 is located above the top wall of the cover body 55), the valve body 19 for the upright and inverted position moves upward within the storage space S away from the upright and inverted storage opening 17d, so that the contents are stored in the storage space S through the inverted suction opening 16d. Even when the amount of contents remaining in the container body A decreases and the liquid level of the contents is located above the lower end of the pipe 15 in the inverted position, the contents continue to be stored in the storage space S through the inverted suction opening 16d. The contents in this storage space S are supplied to the pump 58 through the second suction opening 17a1. Therefore, even when the liquid dispenser 1 is used in an inverted position, it is possible to stably suction and pump the contents to the nozzle until the contents of the container body A are gone.

[0100] As described above, the liquid dispenser 1 of this embodiment comprises a dispenser body 2 having a flow path that guides the contents inside the container A to a discharge hole, and a nozzle having a discharge hole that discharges the pressurized contents to the outside. The discharge hole has a central discharge hole 152c located in the radial center when viewed from the front, and a shower discharge hole 112c located radially outside the central discharge hole 152c. The nozzle is configured to have a nozzle rotation part 112 that rotates around the nozzle axis (central axis O4) to select whether to discharge the contents from the central discharge hole 152c or the shower discharge hole 112c, and a nozzle slide part 152 that has a shower discharge hole 112c and moves along the axis to switch the discharge angle range of the contents discharged from the discharge hole. By adopting this configuration, the contents can be dispensed in two dispensing modes, shower dispensing and central dispensing, each time the trigger 51 is pulled backward, through a simple operation of switching the circumferential position of the nozzle rotation part 112 and the axial position of the nozzle slide part 152, and the dispensing angle range can be switched for each dispensing mode.

[0101] Furthermore, in this embodiment, the nozzle rotating part 112 is configured to have a flow path selecting part (central cylinder 112d) which is provided at the tip of the cylindrical part (injection cylinder part 11) that partitions the flow path and has a connecting cylinder part 160d that has a connecting hole (first connecting hole 160e) that connects the inside and outside in the radial direction at a specific circumferential position, and a flow path selecting part (central cylinder 112d) which has a first recessed groove 168b that guides the contents that have passed through the connecting hole to the central discharge hole 152c when the circumferential position of the connecting hole coincides with the first recessed groove 168b and a second recessed groove 168a that is provided at a circumferential position different from the first recessed groove 168b and guides the contents that have passed through the connecting hole to the shower discharge hole 112c when the circumferential position of the connecting hole coincides with the circumferential position. By adopting this configuration, the circumferential position of the nozzle rotating part 112 can be selected to either connect the first communication hole 160e to the first groove 168b and guide the contents to the central discharge hole 152c, or connect the first communication hole 160e to the second groove 168a and guide the contents to the shower discharge hole 112c. Therefore, the discharge hole can be selected by using a nozzle rotating part 112 with a simple configuration.

[0102] Furthermore, in this embodiment, the flow path selection cylinder (central cylinder 112d) is configured to prevent contents from the flow path from passing through to the discharge hole when the communication hole (first communication hole 160e) does not coincide with either the circumferential position of the first groove 168b or the second groove 168a. By adopting this configuration, a discharge stop function is added to the nozzle rotation unit 112 which has the function of selecting the discharge hole, so that a discharge stop function for storage and other purposes can be provided without increasing the number of parts.

[0103] Furthermore, in this embodiment, the nozzle rotating part 112 has a cylindrical outer wall portion 115 that partitions the radially outer side of the nozzle flow path N that guides the contents toward the shower discharge hole 112c, and the nozzle sliding part 152 has an inner wall portion 117 that partitions the radially inner side of the nozzle flow path N, and the inner wall portion 117 of the nozzle flow path N is configured to have multiple groove portions 117a at circumferential positions, the groove portions 117a which widen in the circumferential direction toward the radially outer side. By adopting this configuration, in the wide-angle range discharge mode discharged from the shower discharge hole 112c, the effect of diffusing the contents radially outward by the groove portions 117a is enhanced, diffusing the contents radially and allowing them to be forcefully ejected in a shower-like manner.

[0104] Furthermore, in this embodiment, the nozzle slide portion 152 is configured to be axially movable relative to the nozzle rotation portion 112 between a wide-angle range discharge mode position where the axial overlap (central axis O4) between the outer wall portion 115 and the groove portion 117a of the inner wall portion 117 is relatively large, and a narrow-angle range discharge mode position where the axial overlap between the outer wall portion 115 and the groove portion 117a of the inner wall portion 117 is relatively small. By adopting this configuration, the length of the axial nozzle flow path N can be easily changed by moving the nozzle slide portion 152 axially relative to the nozzle rotation portion 112. Therefore, by moving the nozzle slide portion 152 axially, the degree of radial diffusion of the contents by the nozzle flow path N during shower discharge can be adjusted, and the discharge angle range can be easily changed.

[0105] Furthermore, in this embodiment, the inner surface of the outer wall portion 115 is configured to be inclined radially outward toward the front. By adopting this configuration, in the wide-angle discharge mode using shower discharge, the contents can be vigorously ejected in a shower-like manner while appropriately directing them radially outward.

[0106] Furthermore, in this embodiment, a spin groove is formed on the radially outer side of the central discharge hole 152c in the nozzle slide portion 152, which guides the contents from the first groove 168b to the central discharge hole 152c while causing them to swirl. By adopting this configuration, in the wide-angle range discharge mode using central discharge, the contents that are pressurized forward via the first communication hole 160e and the first groove 168b are guided to the central discharge hole 152c while swirling around the central axis O4 within the spin groove 152d, thereby enabling the contents to be discharged in a mist form.

[0107] While this disclosure has been described based on various drawings and embodiments, it should be noted that those skilled in the art will find it easy to make various modifications and alterations based on this disclosure. Therefore, it should be noted that these modifications and alterations are included within the scope of the present invention. For example, the functions included in each component can be rearranged in a logically consistent manner, and multiple components can be combined into one or separated. It should be understood that these are also included within the scope of the present invention.

[0108] For example, in this embodiment, the discharge port discharges the contents forward, but the invention is not limited to this case, and the contents may be discharged in a direction other than forward.

[0109] Furthermore, in this embodiment, the trigger portion 51 was made capable of swinging backward (rotating around the rotation axis portion 83), but other configurations in which the trigger portion 51 moves backward can be appropriately adopted. For example, the trigger portion 51 may be made capable of sliding backward. In addition, a mechanism for locking the operation of the trigger portion 51 may be provided.

[0110] Furthermore, in this embodiment, the pump 58 is activated by pulling the trigger 51 backward to pump the contents towards the discharge port, but the system is not limited to this configuration. For example, a pump that pumps the contents to the discharge port by pressing the head portion may be provided. Alternatively, instead of a pump, an aerosol container may be used to pump the contents to the discharge port using the gas pressure inside the container.

[0111] Furthermore, in this embodiment, the groove 117a is configured to have a substantially semicircular shape when viewed from the front, but the embodiment is not limited to this, and for example, it may have a substantially U-shape or a substantially V-shape when viewed from the front. [Explanation of symbols]

[0112] 1 liquid squirt 2 Squirt body 3 Nozzle component 10 Vertical supply cylinder section 11 Injection cylinder part (cylindrical part) 12 Outer cylinder 12a Large diameter section 12b Small diameter section 12c Annular connection part 12d Top wall 13 Inner cylinder 13a Large diameter section 13b Small diameter section 13c flange section 13d Tsubabe 14. Mounting cap 15 pipes 16 Upright / Inverted Adapter 16a Inverted flange 16b Normal inverted fitting tube 16c Upright / Inverted Mounting Tube 16d Suction opening when inverted 17. Inverted / Upright Second Adapter 17a Opening flange 17a1 2nd suction opening 17b Normal inverted 2nd fitting tube 17c Inverted No. 2 Mounting Tube 17d Upright and inverted storage opening 18. Upright / Inverted Occlusion Adapter 18a Closure flange 18a1 1st suction opening 18b Pipe mounting tube 18c occlusion tube 19 Valve body for inverted position 35 valve seats 36 Ball valve 37 Valve body 37a Flange 37b Stepped section 37c Valve retaining part 37d Spring section 38 Inflow hole 40 Cylinder section 41 Fitting projection 51 Trigger section 51a opening 52 pistons 53 Cylinders 54 Elastic members 54a Main leaf spring 54b Sub-leaf spring 54d Locking piece 55 Cover body 58 pumps 60 Outer cylinder part 61 Rear wall 62 Piston Guide 63 First ventilation hole 64. Second ventilation hole 65 Third ventilation hole 66 Through holes 68 Communication cylinder part 70 Connection part 70a connection hole 71 Piston Cylinder 72 Piston body 73 Sliding cylinder section 73a Lip section 80 Main plate member 81 Side plate member 82 Connecting plate 83 Rotating shaft section 84 Upper plate member 84a Substrate section 84b Bearing section 85 Connecting tube 86 Connecting shaft 104 Communication hole 112 Nozzle Rotating Part (Nozzle) 112a 2nd fitting tube 112c Shower nozzle (discharge hole) 112d Central cylinder (flow path selection cylinder section) 112f External locking claw 112g sealed tube 112k1 Locking protrusion 112k2 Anti-detachment protrusion 112m Nozzle Front Plate 115 Exterior wall section (nozzle) 115a Front end slope 117 Inner wall section (nozzle) 117a Groove 152 Nozzle slide section (nozzle) 152a Nozzle plate 152b Nozzle opening 152c Central discharge port (discharge port) (nozzle) 152c1 center opening 152d Spin groove (nozzle) 152e Slide Outer Tube 152f Engagement protrusion 153 Dividing wall 160 Concatenation 160a 3rd fitting tube 160b 1st fitting tube 160c front wall 160d Connecting cylinder part 160d1 Front protrusion 160e 1st communication hole 160f Inner locking claw 162 2nd communication hole 168a 2nd groove 168b 1st groove 168c 3rd communication hole 168d Third groove 168e Guide groove A container A1 Mouth N Nozzle flow path (nozzle) O1,O3 Center axis O2 container axis O4 Center axis line (axis line) S Storage space S1, S2 gap

Claims

1. A dispenser body having a flow path that guides the contents inside the container to the discharge hole, A nozzle having the aforementioned discharge hole for discharging the pressurized contents to the outside A liquid sprayer equipped with, The discharge port has a central discharge port located in the radial center when viewed from the front, and a shower discharge port located radially outside the central discharge port. The nozzle is a liquid dispenser comprising: a nozzle rotation unit that rotates around the axis of the nozzle to select whether to discharge the contents from the central discharge hole or the shower discharge hole; and a nozzle slide unit that has the shower discharge hole and moves along the axis to switch the discharge angle range of the contents discharged from the discharge hole.

2. The connecting cylindrical portion is provided at the tip of the cylindrical portion that partitions the flow path and has a communication hole that connects the inside and outside in the radial direction at a specific circumferential position, The liquid ejector according to claim 1, wherein the nozzle rotating portion has a flow path selection cylinder portion comprising a first groove that guides the contents that have passed through the communication hole to the central discharge hole when the circumferential position of the communication hole coincides with the communication hole, and a second groove provided at a circumferential position different from the first groove that guides the contents that have passed through the communication hole to the shower discharge hole when the circumferential position of the communication hole coincides with the communication hole.

3. The liquid ejector according to claim 2, wherein the flow path selection cylinder portion does not allow the contents from the flow path to pass to the discharge hole when the communication hole does not coincide with either the circumferential position of the first groove or the second groove.

4. The nozzle rotating part has a cylindrical outer wall portion that partitions the radially outer side of the nozzle flow path that guides the contents toward the shower discharge hole, The nozzle slide portion has an inner wall portion that partitions the radially inner side of the nozzle flow path, The liquid ejector according to any one of claims 1 to 3, wherein the inner wall portion of the nozzle flow path has a plurality of grooves at circumferential positions, the grooves having a circumferential width that widens radially outward.

5. The liquid ejector according to claim 4, wherein the nozzle slide portion is axially movable relative to the nozzle rotation portion between a wide-angle range discharge mode position in which the axial overlap between the outer wall portion and the groove portion of the inner wall portion is relatively large, and a narrow-angle range discharge mode position in which the axial overlap between the outer wall portion and the groove portion of the inner wall portion is relatively small.

6. The liquid ejector according to claim 4, wherein the inner surface of the outer wall portion is inclined radially outward toward the front.

7. The liquid ejector according to claim 2 or 3, wherein a spin groove is formed on the radially outer side of the central discharge hole in the nozzle slide portion, which guides the contents from the first groove to the central discharge hole while causing them to swirl.

Images