Washing appliance

Abstract

To provide a technique to appropriately suppress the spread of liquid discharged from a washing tool.SOLUTION: A washing tool 1 comprises a bottle part 2 and a nozzle part 3. The bottle part 2 has a bottle body 21 for storing liquid, and an opening 2P. The bottle part 2 can be deformed by pressing. The nozzle part 3 is detachably attached to the opening 2P. The nozzle part 3 is disposed on the periphery of a central axis A1 and has a plurality of discharge holes 4 which go through the nozzle part 3 in the axial direction. An inner face of each of the plurality of discharge holes 4 has a first portion 41 and a second portion 42. The first portion 41 is located on the inside in the radial direction and is inclined to the outside in the radial direction toward one side in the axial direction which is the discharge side. The second portion 42 is located on the outside in the radial direction. The first portion 41 is more greatly inclined to the outside in the radial direction toward the one side in the axial direction than the second portion 42.SELECTED DRAWING: Figure 6

Description

Technical Field

[0001] The present invention relates to a cleaning device.

Background Art

[0002] For example, in the field of nursing care, a caregiver may use a cleaning device that discharges a liquid such as warm water to clean a cleaning site (such as the genital area or anus) of a person in need of care. Such a cleaning device has a bottle portion for storing the cleaning liquid and a nozzle portion for discharging the liquid in the container to the outside. The user of the cleaning device can discharge the liquid from the nozzle portion by pressing and deforming the container.

[0003] Patent Documents 1 and 2 describe a cleaning device capable of discharging a liquid in a shower-like manner by ejecting the liquid from a plurality of discharge ports.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] By the way, when the spread of the liquid discharged from the cleaning device is reduced, the water pressure of the liquid becomes relatively high. In this case, there is a risk of burdening the cleaning site when the high-pressure liquid is applied to the cleaning site. On the other hand, when the spread of the liquid is increased, the splashing at the cleaning site becomes large, so there is a risk of splashing onto the bed, sheets, etc. Also, when the spread of the liquid increases, the water pressure relatively decreases. Then, there is a risk that the time required for cleaning becomes long. For this reason, a technique for suppressing the excessive spread of the liquid discharged from the cleaning device is required.

[0006] An object of the present invention is to provide a technique capable of appropriately suppressing the spread of the liquid discharged from the cleaning device.

Means for Solving the Problems

[0007] To solve the above problems, a first aspect is a cleaning device, which includes a press-deformable bottle part having a body part capable of accommodating a liquid and an opening part, and a nozzle part detachably attached to the opening part. The nozzle part is arranged around a central axis and has a plurality of discharge holes penetrating through the nozzle part in the axial direction. The inner surfaces of the plurality of discharge holes have a first part located radially inward and inclined radially outward toward one axial side, which is the discharge side, and a second part located radially outside the first part. while being inclined with respect to the axial direction The second part has an angle formed with a straight line parallel to the radial direction. The angle on the one axial side and radially inward is smaller than the angle formed by the first part with a straight line parallel to the radial direction and on the one axial side and radially inward. such that an angle formed by a straight line parallel to the axial direction and the first portion is larger than an angle formed by a straight line parallel to the axial direction and the second portion 。

[0009] The 2 aspect is that, in the cleaning device according to the first aspect, the angle formed by the straight line parallel to the axial direction and the first part is 5° or more and 15° or less. such The cleaning device according to the first aspect, wherein the angle formed by the straight line parallel to the axial direction and the second part is 5° or less.

[0010] The 3 aspect is that, in the cleaning device according to the first aspect or The 2 aspect such The cleaning device according to the first aspect, wherein the second part is inclined radially inward toward one axial side.

[0011] The 4 aspect is that, in the cleaning device according to any one of the first aspect to the 3 aspect, the second part is inclined radially inward toward one axial side.

[0012] The 5 aspect is that, in the cleaning device according to any one of the first aspect to the 4Any one of the cleaning appliances according to an aspect, wherein a first opening on one axial side of each of the discharge holes is inclined toward one axial side in the radial direction inward.

[0013] First 6 The aspect is the first 5 A cleaning appliance according to an aspect, wherein the nozzle portion has a nozzle tip at one axial end, the plurality of discharge holes are arranged at the nozzle tip, and a top surface on one axial side of the nozzle tip has a convex shape protruding toward one axial side in the radial direction inward, and a thickness of the nozzle tip in the axial direction increases toward the radial direction inward.

[0014] First 7 The aspect is from the first aspect to the 6 Any one of the cleaning appliances according to an aspect, wherein in each of the discharge holes, an opening area of a first opening on one axial side is smaller than an opening area of a second opening on the other axial side.

[0015] The eighth aspect is a cleaning appliance according to the seventh aspect, wherein an inner diameter of the first opening is smaller than an inner diameter of the second opening 。

Advantages of the Invention

[0016] According to the cleaning appliance of the first aspect, on the inner surface of the discharge portion, since the first portion on the inner side in the radial direction is inclined outward in the radial direction, the liquid can be discharged from the nozzle portion so as to spread outward in the radial direction. Further, since an angle formed by the second portion with respect to a straight line parallel to the radial direction, which is an angle on one axial side and on the inner side in the radial direction, is smaller than an angle formed by the first portion with respect to a straight line parallel to the radial direction, which is an angle on one axial side and on the inner side in the radial direction, the inclination of the second portion outward in the radial direction can be suppressed. Thereby, it is possible to suppress the liquid discharged from the nozzle portion from spreading excessively outward in the radial direction.

[0017] First 1According to the cleaning device of the aspect, by making the angle formed by the straight line parallel to the axial direction and the first part larger than the angle formed by the straight line parallel to the axial direction and the second part, the inclination of the second part with respect to the axial direction can be suppressed. Thereby, it is possible to suppress the liquid discharged from the nozzle portion from spreading excessively radially outward.

[0018] First 2 According to the cleaning device of the aspect, by setting the inclination angle of the first part 41 to be 5° or more and 15° or less, the liquid discharged from the nozzle portion can be appropriately spread radially outward.

[0019] First 3 According to the cleaning device of the aspect, since the inclination angle of the second part is 5° or less, it is possible to suppress the liquid discharged from the nozzle portion from spreading excessively radially outward.

[0020] First 4 According to the cleaning device of the aspect, since the second part is inclined radially inward toward one side in the axial direction, it is possible to suppress the liquid discharged from the nozzle portion from spreading excessively radially outward.

[0021] First 5 According to the cleaning device of the aspect, since the first opening on the discharge side is inclined toward one side in the axial direction radially inward, the liquid discharged from the nozzle portion can be appropriately spread.

[0022] First 6 According to the cleaning device of the aspect, since the first opening is formed on the convex top surface, the first opening can be inclined. Further, by increasing the thickness of the nozzle top in the axial direction radially inward, the nozzle top becomes thick, so that the discharge hole can be made long in the axial direction. Thereby, the discharge direction can be stabilized.

[0023] First 7 According to the cleaning device of the aspect, the liquid can be discharged at a water pressure suitable for cleaning.

[0024] First 8According to the cleaning device of the aspect, liquid can be discharged at a water pressure suitable for cleaning.

Brief Description of the Drawings

[0025]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Mode for Carrying Out the Invention

[0026] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. Note that the components described in this embodiment are merely examples and are not intended to limit the scope of the present invention thereto. In the drawings, for ease of understanding, the dimensions and numbers of each part may be exaggerated or simplified as necessary.

[0027] <1. Embodiment> FIG. 1 is a front view of a cleaning device 1 according to an embodiment. FIG. 2 is a front view of a bottle part 2 shown in FIG. 1. FIG. 3 is a perspective view of a nozzle part 3 shown in FIG. 1. FIG. 4 is a plan view of the nozzle part 3 shown in FIG. 2. FIG. 5 is a bottom view of the nozzle part 3 shown in FIG. 2. FIG. 6 is a cross-sectional view of the nozzle part 3 at the position along the line A-A shown in FIG. 4.

[0028] The cleaning device 1 is a device for spraying a shower-like liquid (for example, normal temperature water, warm water, or a cleaning chemical solution, etc.). The cleaning device 1 is applicable to, for example, cleaning the human genital area, anus, or the surrounding areas thereof. As shown in FIG. 1, the cleaning device 1 has a bottle part 2 and a nozzle part 3.

[0029] <Bottle part> The bottle part 2 is a flexible container capable of storing liquid. The bottle part 2 is a member produced, for example, by molding a resin (such as polyethylene (PE) or polyvinyl chloride (PVC)) with a mold.

[0030] As shown in FIG. 2, the bottle part 2 has a bottle body part 21 and an opening part 2P. The bottle body part 21 has a bottom and is cylindrical extending along one direction. The bottle body part 21 preferably has a hardness such that it can be easily deformed with one hand by a person pressing it with a finger or the like. The volume of the bottle body part 21 is preferably 300 ml or more, more preferably 350 ml or more, and even more preferably 400 ml or more. Also, the volume of the bottle body part 21 is preferably 600 ml or less, more preferably 550 ml or less, even more preferably 500 ml or less, and even more preferably 450 ml or less.

[0031] The bottle body part 21 has a nozzle mounting part 23 at its tip. The nozzle mounting part 23 is the part where the nozzle part 3 is mounted. The nozzle part 3 is connected to one end of the bottle body part 21. The nozzle mounting part 23 is cylindrical. The outer peripheral surface of the nozzle mounting part 23 has a spiral thread that engages with a thread groove provided in the nozzle part 3 described later.

[0032] The opening part 2P is located at the tip of the nozzle mounting part 23. That is, the opening part 2P is located at the tip of the bottle part 2. The opening part 2P forms an opening, for example, in a circular shape.

[0033] The nozzle mounting part 23 forms a liquid injection hole 231 for pouring liquid inside the bottle body part 21. The bottle body part 21 of the bottle part 2 communicates with the outside through the liquid injection hole 231 in a state where the nozzle part 3 is not mounted.

[0034] <Nozzle part> The nozzle part 3 is detachably attached to the bottle part 2. The nozzle part 3 is a member produced by molding a resin (for example, polypropylene (PP), etc.) with a mold. The nozzle part 3 is attached to the opening 2P of the bottle part 2. The nozzle part 3 is detachably attached to the opening 2P. When the nozzle part 3 is attached to the nozzle mounting part 23 of the bottle part 2, the opening 2P of the bottle part 2 is closed. The rigidity (Young's modulus) of the nozzle part 3 is preferably greater than that of the bottle part 2. In this way, by making the nozzle part 3 less deformable, a shower-like liquid can be stably discharged from the nozzle part 3.

[0035] As shown in FIG. 3, the nozzle part 3 has a plurality of discharge holes 4. In the present embodiment, the nozzle part 3 has six discharge holes 4. However, the number of discharge holes 4 is not limited to six, and may be two to five, or seven or more. The nozzle part 3 discharges the liquid stored in the bottle part 2 outward in a shower-like (radial) shape through the plurality of discharge holes 4.

[0036] As shown in FIG. 3, the plurality of discharge holes 4 are arranged around a predetermined central axis A1. In the following description, the direction parallel to the central axis A1 is referred to as the "axial direction". The discharge hole 4 penetrates the nozzle part 3 (more specifically, the nozzle tip 513 of the discharge part 51 described later) in the axial direction. When the bottle part 2 is pressed in the state where the nozzle part 3 is attached to the bottle part 2 as shown in FIG. 1, the liquid stored in the bottle part 2 is discharged to one side in the axial direction through the plurality of discharge holes 4. That is, one side in the axial direction corresponds to the discharge side where the liquid is discharged.

[0037] Also, in each component, the end on one side in the axial direction is referred to as the "axial direction one end", and the position of the axial direction one end is referred to as the "axial direction one end position". Also, in each component, the end on the other side in the axial direction is referred to as the "axial direction other end", and the position of the axial direction other end is referred to as the "axial direction other end position".

[0038] Also, the direction orthogonal to the axial direction is referred to as the "radial direction". The direction toward the central axis A1 in the radial direction is referred to as the "radially inward direction", and the direction toward the side opposite to the central axis A1 in the radial direction is referred to as the "radially outward direction". Also, the rotational direction centered on the central axis A1 is referred to as the circumferential direction.

[0039] As shown in FIGS. 1, 3 to 6, the nozzle portion 3 has a discharge portion 51, a flange portion 53, and a mounting portion 55 in order from one side in the axial direction to the other side.

[0040] The discharge portion 51 has a nozzle cylinder portion 511 and a nozzle tip portion 513. The nozzle cylinder portion 511 is in a cylindrical shape with an outer diameter and an inner diameter gradually decreasing toward one side in the axial direction. The nozzle tip portion 513 is disposed at one axial end of the nozzle cylinder portion 511. As shown in FIG. 6, the nozzle tip portion 513 has a plate shape intersecting the central axis A1. As shown in FIG. 6, the plurality of discharge holes 4 are disposed in the nozzle tip portion 513 of the nozzle portion 3 and penetrate the nozzle tip portion 513 in the axial direction. As shown in FIG. 6, the inner diameter of the nozzle cylinder portion 511 decreases toward one side in the axial direction. Thereby, the water pressure of the liquid discharged from the plurality of discharge holes 4 of the nozzle tip portion 513 can be increased.

[0041] The mounting portion 55 is in a cylindrical shape centered on the central axis A1. The inner peripheral surface (the surface facing the radially inner side) of the mounting portion 55 has a spiral thread groove that engages with the thread of the nozzle mounting portion 23 of the bottle portion 2. The nozzle portion 3 is fixed to the bottle portion 2 by the engagement of the inner thread groove of the mounting portion 55 and the outer thread of the nozzle mounting portion 23.

[0042] The flange portion 53 is annular and extends in the circumferential direction. The other axial end of the nozzle cylinder portion 511 of the discharge portion 51 is connected to the inner end in the radial direction of the flange portion 53. One axial end of the mounting portion 55 is connected to the outer end in the radial direction of the flange portion 53. As shown in FIG. 6, the nozzle portion 3 has an annular protruding piece portion 57 centered on the central axis A1. The protruding piece portion 57 is disposed on the other axial side surface of the flange portion 53. When the mounting portion 55 of the nozzle portion 3 is mounted on the nozzle mounting portion 23 of the bottle portion 2, the protruding piece portion 57 is disposed inside the opening 2P. Then, the outer peripheral surface (the surface facing the outer side in the radial direction) of the protruding piece portion 57 contacts the inner peripheral surface of the liquid injection hole 231. Thereby, liquid leakage is suppressed.

[0043] The heat-resistant temperature (the temperature at which continuous use is possible) of the nozzle portion 3 is preferably higher than the heat-resistant temperature of the bottle portion 2. Specifically, the heat-resistant temperature of the nozzle portion 3 is preferably 70° C. or higher, more preferably 80° C. or higher, still more preferably 90° C. or higher, and even more preferably 100° C. or higher. By setting the heat-resistant temperature of the nozzle portion 3 to 100° C. or higher, the nozzle portion 3 can be sterilized by boiling. Further, the heat-resistant temperature of the bottle portion 2 is preferably 60° C. or higher, more preferably 70° C. or higher. By setting the heat-resistant temperature of the bottle portion 2 to 60° C. or higher, the cleaning site can be cleaned with warm liquid, so the burden on the cleaning site can be reduced. Also, by making the heat-resistant temperature of the bottle portion 2 lower than the heat-resistant temperature of the nozzle portion 3, the flexibility of the bottle portion 2 can be ensured.

[0044] As shown in FIG. 6, the inner peripheral surface of the discharge hole 4 has a first portion 41 and a second portion 42. The first portion 41 is located on the inner side in the radial direction. The second portion 42 is located on the outer side in the radial direction. More specifically, as shown in FIG. 6, the first portion 41 is the portion located on the inner side in the radial direction among the two cuts formed when the inner peripheral surface of the discharge hole 4 is cut by a plane parallel to the axial direction including the central axis A1. The second portion 42 is the portion located on the outer side in the radial direction among the two cuts. That is, the first portion 41 and the second portion 42 are located on the same plane passing through the central axis. And the second portion 42 is located on the outer side in the radial direction than the first portion 41.

[0045] As shown in FIG. 6, the angle formed by the first portion 41 with respect to a straight line parallel to the radial direction, where the angle on one axial side and the inner radial direction is “γ”. Also, the angle formed by the second portion 42 with respect to a straight line parallel to the radial direction, where the angle on one axial side and the inner radial direction is “δ”. In this example, the bottom surface 73 of the nozzle top 513 is parallel to the radial direction. Therefore, the angle γ is the angle formed by the first portion 41 with respect to the bottom surface 73 of the nozzle top 513, and the angle δ is the angle formed by the second portion 42 with respect to the bottom surface 73 of the nozzle top 513.

[0046] The first portion 41 and the second portion 42 are linear and extend in the axial direction. The first portion 41 is inclined radially outward toward one axial side, which is the discharge side. Also, the second portion 42 of the discharge hole 4 is inclined radially inward toward one axial side. The angle δ formed by the second portion 42 with respect to the radial direction is smaller than the angle γ formed by the first portion 41 with respect to the radial direction.

[0047] As shown in FIG. 6, the acute inclination angle α formed by the first straight line L1 parallel to the axial direction and the first portion 41 is larger than the acute inclination angle β formed by the second straight line L2 parallel to the axial direction and the second portion 42.

[0048] The inclination angle α of the first portion 41 is preferably 5° or more, more preferably 7° or more, and even more preferably 9° or more. Also, the inclination angle α is preferably 15° or less, more preferably 13° or less, and even more preferably 11° or less. The inclination angle β of the second portion 42 is preferably 5° or less, more preferably 3° or less.

[0049] As shown in FIG. 6, the thickness of the nozzle top 513 is the thickest at the portion intersecting the central axis A1, and gradually decreases toward the outer radial direction. As shown in FIG. 6, the nozzle top 513 has a nozzle top surface 71 facing one axial side. The nozzle top surface 71 has a curved surface shape that protrudes toward one axial side as it goes radially inward. Also, the nozzle top 513 has a bottom surface 73 facing the other axial side. The bottom surface 73 is a plane orthogonal to the axial direction. That is, the bottom surface 73 is parallel to the radial direction.

[0050] As shown in FIG. 6, since the nozzle top surface 71 protrudes axially toward one side in the radial direction with respect to the bottom surface 73, the thickness of the nozzle top 513 can be gradually increased as it approaches the central axis A1.

[0051] As shown in FIG. 6, the discharge hole 4 has a first opening 41P and a second opening 42P. The first opening 41P is formed in the nozzle top surface 71. That is, the first opening 41P is located at one axial end of the discharge hole 4. As described above, the nozzle top surface 71 of the nozzle top 513 has a convex shape that protrudes axially toward one side in the radial direction. Therefore, the first opening 41P is inclined axially toward one side in the radial direction.

[0052] As shown in FIG. 6, since the first opening 41P is inclined axially toward one side in the radial direction, the liquid discharged from the first opening 41P is likely to jet toward the outside in the radial direction. Thereby, the liquid discharged from the nozzle portion 3 can be appropriately spread.

[0053] The second opening 42P is formed in the bottom surface 73 of the nozzle top 513. That is, the second opening 42P is located at the other axial end of the discharge hole 4. As described above, since the bottom surface 73 of the nozzle top 513 is parallel to the radial direction, the second opening 42P is parallel to the radial direction.

[0054] As shown in FIG. 6, the first opening 41P is inclined axially toward one side in the radial direction, and the second opening 42P is parallel to the radial direction. Therefore, the axial length of the first portion 41 is larger than the axial length of the second portion 42. The axial lengths of the first portion 41 and the second portion 42 are each larger than the inner diameter W1 of the first opening 41P. Also, the axial lengths of the first portion 41 and the second portion 42 are each larger than the inner diameter W2 of the second opening 42P. By the axial length of the discharge hole 4 being larger than the inner diameter W1 or the inner diameter W2, the direction of the liquid ejected from the first opening 41P can be easily controlled.

[0055] As shown in FIG. 4, the discharge holes 4 are arranged at equal intervals in the circumferential direction. Specifically, as shown in FIG. 4, the first openings 41P of the plurality of discharge holes 4 are arranged at equal intervals in the circumferential direction on the nozzle top surface 71 of the nozzle top portion 513. Further, as shown in FIG. 5, the second openings 42P of the plurality of discharge holes 4 are arranged at equal intervals in the circumferential direction on the bottom surface 73 of the nozzle top portion 513. By arranging the plurality of discharge holes 4 at equal intervals in the circumferential direction, the liquid can be ejected uniformly in the circumferential direction from the nozzle portion 3. It should be noted that it is not essential that the plurality of discharge holes 4 are arranged at equal intervals in the circumferential direction.

[0056] As shown in FIG. 4, the plurality of discharge holes 4 are arranged on the same circumference centered on the central axis A1. Specifically, as shown in FIG. 4, when viewed from one side in the axial direction, the first openings 41P of the plurality of discharge holes 4 are arranged on the same circumference. Further, as shown in FIG. 5, when viewed from the other side in the axial direction, the second openings 42P of the plurality of discharge holes 4 are arranged on the same circumference. Since the plurality of discharge holes 4 are arranged on the same circumference, when the liquid is ejected from the nozzle portion 3, a shower that spreads uniformly in the radial direction centered on the central axis A1 can be formed. It should be noted that it is not essential that the plurality of discharge holes 4 are arranged on the same circumference.

[0057] In the discharge hole 4, the opening area of the first opening 41P is preferably smaller than the opening area of the second opening 42P. In particular, as shown in FIG. 6, the inner diameter W1 (length in the radial direction) of the first opening 41P is preferably smaller than the inner diameter W2 of the second opening 42P.

[0058] The inner diameter W1 of the first opening 41P is preferably 2 mm or less, more preferably 1.8 mm or less, more preferably 1.6 mm or less, more preferably 1.4 mm or less, more preferably 1.2 mm or less, and still more preferably 1.0 mm or less. Further, the difference between the inner diameter W1 of the first opening 41P and the inner diameter W2 of the second opening 42P is preferably 0.2 mm or more and 0.7 mm or less.

[0059] When the opening area of the first opening 41P is smaller than the opening area of the second opening 42P, the water pressure of the liquid discharged from the discharge hole 4 increases. As a result, the liquid can be discharged from the nozzle portion 3 at a water pressure suitable for cleaning.

[0060] <Dimensions of each part of the bottle part> As shown in FIG. 2, the inner diameter W3 of the opening 2P of the bottle part 2 is preferably 22 mm or more, more preferably 23 mm or more. When the inner diameter of the opening 2P of the bottle part 2 is 22 mm or more or 23 mm or more, the opening 2P can be made larger. As a result, when pouring hot water into the bottle part 2, it is possible to prevent the hot water from spilling.

[0061] As shown in FIG. 2, the inner diameter W3 of the opening 2P of the bottle part 2 is preferably smaller than the outer diameter W4 of the bottle body part 21 of the bottle part 2. Specifically, the inner diameter W3 of the opening 2P is preferably 39% or more of the outer diameter W4 of the bottle body part 21, more preferably 40% or more of the outer diameter W4. When the inner diameter W3 of the opening 2P is 39% or more of the outer diameter W4 of the bottle body part 21, the inner diameter W3 of the opening 2P can be made sufficiently larger than the outer diameter W4 of the bottle body part 21. As a result, it becomes easier to clean the inside of the bottle body part 21 with a sponge or the like, and it also becomes easier to dry the inside of the bottle body part 21 after cleaning.

[0062] The inner diameter W3 of the opening 2P is preferably 55% or less of the outer diameter W4 of the bottle body part 21, more preferably 50% or less of the outer diameter W4, more preferably 45% or less of the outer diameter W4, more preferably 42% or less of the outer diameter W4. When the inner diameter W3 of the opening 2P is 55% or less of the outer diameter W4 of the bottle body part 21, it is possible to suppress a decrease in the water pressure of the liquid ejected from the nozzle portion 3.

[0063] The axial length H1 of the bottle body part 21 is preferably larger than the outer diameter W4 of the bottle body part 21. The length H1 of the bottle body part 21 is preferably 2 times or more the outer diameter W4 of the bottle body part 21, more preferably 2.5 times or more the outer diameter W4. When the bottle body part 21 has an axially elongated shape, the deformation of the bottle body part 21 due to pressing becomes easy.

[0064] The thickness of the bottle body portion 21 is, for example, 1.5 mm or less, more preferably 1.0 mm or less, and even more preferably 0.5 mm or less. When the thickness of the bottle body portion 21 is small, the rigidity (Young's modulus) of the bottle portion 2 can be made such that it can be easily deformed by pressing with one hand.

[0065] <Effect> According to the cleaning device 1 described above, on the inner surface of the discharge hole 4, the first portion 41 on the inner side in the radial direction is inclined radially outward toward one side in the axial direction. Thereby, since the liquid can be discharged from the nozzle portion 3 so as to spread radially outward, a shower-like liquid can be discharged with an appropriate water pressure. Therefore, the cleaning part can be comfortably cleaned without imposing a burden on the cleaning part.

[0066] Further, the angle δ formed by the second portion 42 with respect to a straight line parallel to the radial direction is smaller than the angle γ formed by the first portion 41 with respect to a straight line parallel to the radial direction. Thereby, the inclination of the second portion 42 radially outward is suppressed more than that of the first portion 41. For this reason, it is possible to suppress the liquid discharged from the nozzle portion 3 from spreading excessively radially outward. Therefore, it is possible to suppress a decrease in the water pressure of the liquid discharged from the cleaning device 1, and it is possible to suppress an increase in the cleaning time. In addition, since the scattering of the liquid to the surroundings can be prevented, the pollution of the surroundings can be suppressed.

[0067] Further, since the inclination angle α formed by the first straight line L1 and the first portion 41 is larger than the inclination angle β formed by the second straight line L2 and the second portion 42, the inclination of the second portion 42 radially outward is suppressed. Thereby, it is possible to suppress the liquid discharged from the nozzle portion 3 from spreading excessively radially outward.

[0068] By setting the inclination angle α of the first portion 41 to be 5° or more and 15° or less, the liquid discharged from the nozzle portion 3 can be appropriately spread radially outward.

[0069] Since the second part 42 inclines radially inward toward one axial side, it is possible to suppress the liquid discharged from the nozzle part 3 from spreading excessively radially outward.

[0070] Since the inclination angle β of the second part 42 is 5° or less, it is possible to suppress the liquid discharged from the nozzle part 3 from spreading excessively radially outward.

[0071] As shown in FIG. 6, since the thickness of the nozzle top 513 in the axial direction increases toward the radially inner side, the nozzle top 513 can be made thick. Therefore, the discharge hole 4 can be extended long in the axial direction. As a result, since it becomes easy to control the discharge direction of water from the nozzle part 3, the discharge direction can be stabilized.

[0072] Also, since the bottom surface 73 is parallel to the radial direction and the nozzle top surface 71 protrudes toward one axial side, the nozzle top 513 can be made thick.

[0073] <2. Modification Example> As described above, the embodiments have been explained, but the present invention is not limited to the above, and various modifications are possible.

[0074] In the above embodiment, as shown in FIG. 6, the second part 42 of the discharge hole 4 is inclined radially inward toward one axial side, but the second part 42 may be inclined radially outward toward one axial side. Also, the second part 42 may be parallel to the axial direction.

[0075] In the above embodiment, the bottom surface 73 of the nozzle top 513 is parallel to the radial direction, but this is not essential. For example, the bottom surface 73 may intersect the radial direction. Also, the bottom surface 73 may protrude toward the other axial side. Also, the bottom surface 73 may be recessed toward one axial side. In addition, when the bottom surface 73 is recessed toward one axial side, in order to ensure the thickness of the nozzle top 513, the size of the recess of the bottom surface 73 in the axial direction may be made smaller than the size of the protrusion of the nozzle top surface 71 in the axial direction.

[0076] Further, it is not essential that the first portion 41 and the second portion 42 are linear, and they may have non-linear portions such as curved shapes. Also, when the first portion 41 is non-linear, the angle γ may be defined as the angle formed by the tangent line contacting the first portion 41 with respect to the line parallel to the radial direction. Similarly, when the second portion 42 is non-linear, the angle δ may be defined as the angle formed by the tangent line contacting the second portion 42 with respect to the line parallel to the radial direction.

[0077] As shown in FIG. 1, the extending direction of the bottle body portion 21 is parallel to the axial direction, but the extending direction of the bottle body portion 21 may intersect the axial direction.

[0078] The shape of the bottle portion 2 and the shape of the nozzle portion 3 are not limited to the shapes described above and can be arbitrarily deformed. For example, it is not essential that the shape of the bottle portion 2 is cylindrical.

Explanation of Reference Numerals

[0079] 1 Cleaning device 2 Bottle portion 21 Bottle body portion 231 Liquid injection hole 2P Opening 3 Nozzle portion 4 Discharge hole 41 First portion 41P First opening 42 Second portion 42P Second opening 51 Discharge portion 511 Nozzle cylinder portion 513 Nozzle tip 71 Nozzle top surface 73 Bottom surface A1 Central axis

Claims

1. A cleaning device, comprising: a squeezable bottle part having a body part capable of containing a liquid and an opening; a nozzle part detachably attached to the opening; The nozzle part is arranged around a central axis and has a plurality of discharge holes penetrating the nozzle part in the axial direction. The inner surfaces of the plurality of discharge holes have a first portion located radially inward and inclined radially outward toward one axial side which is the discharge side, and a second portion located radially outside the first portion and inclined with respect to the axial direction. The angle formed by the second portion with respect to a straight line parallel to the radial direction, and the angle on one axial side and radially inward is smaller than the angle formed by the first portion with respect to a straight line parallel to the radial direction and on one axial side and radially inward. A cleaning device, wherein the angle formed by the straight line parallel to the axial direction and the first portion is larger than the angle formed by the straight line parallel to the axial direction and the second portion.

2. The cleaning device according to claim 1, wherein the angle formed by the straight line parallel to the axial direction and the first portion is 5° or more and 15° or less.

3. The cleaning device according to claim 1 or claim 2, wherein the angle formed by the straight line parallel to the axial direction and the second portion is 5° or less.

4. The cleaning device according to any one of claims 1 to 3, wherein the second portion is inclined radially inward toward one axial side.

5. The cleaning device according to any one of claims 1 to 4, wherein the first opening on one axial side of each discharge hole is inclined axially inward toward the radially inner side.

6. The cleaning device according to claim 5, wherein the nozzle part has a nozzle tip at one axial end, the plurality of discharge holes are arranged at the nozzle tip, the top surface on one axial side of the nozzle tip has a convex shape protruding axially inward toward the radially inner side, and the thickness of the nozzle tip in the axial direction increases toward the radially inner side.

7. The cleaning device according to any one of claims 1 to 6, wherein in each discharge hole, the opening area of the first opening on one axial side is smaller than the opening area of the second opening on the other axial side.

8. The cleaning device according to claim 7, wherein the inner diameter of the first opening is smaller than the inner diameter of the second opening. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

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