Shower head attachment

Abstract

The purpose is to provide a showerhead attachment that makes it easier for practitioners to wash the scalp and hair of patients. [Solution] The attachment 1 has a spray surface 2 that is formed in a roughly inverted triangular shape and has a corner 2e that corresponds to the bent part 2a. This corner 2e can be used to precisely target only the area to be washed. As a result, when a hairdresser or other professional washes the scalp and hair of a client, it is easier to prevent water from flowing into the client's ear canal, and the professional can more easily wash the scalp and hair of the client. Furthermore, since the corner portion 2e is provided with a projection 5 in a position that forms a triangular shape with one side facing the bent portion 2a when viewed from the front, the force transmitted from the projection 5 is less likely to concentrate in one place near the bent portion 2a, thereby preventing bending of the brush portion 3 on which the watering surface 2 is formed and the corner portion 2e.

Description

Technical Field

[0001] The present invention relates to an attachment for a shower head.

Background Art

[0002] Conventionally, shower heads or attachments for shower heads provided with brush-like protrusions have been proposed for washing the scalp and hair. For example, Patent Document 1 proposes a shower brush (shower head) capable of performing washing and massage without damaging hair roots, the scalp, etc. when washing the scalp. This shower brush has a head body in which protrusions are integrally attached corresponding to each position of a large number of water spray holes, and hot and cold water can be discharged from the tips of the brush-like protrusions of this head body. Therefore, it is said that the deep part of the hair, hair roots, scalp, etc. can be evenly rinsed.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Incidentally, in the shower brush described in Patent Document 1, brush-like protrusions are arranged across the entire surface of the disc-shaped spray plate on the head body, making it difficult to accurately target the area to be cleaned with the protrusions, resulting in poor cleaning. In particular, when cleaning the scalp and hair around the ears, such as the sideburns and behind the ears, the edge of the head body with the disc-shaped spray plate may touch the ear, making it difficult to accurately target the area to be cleaned. Furthermore, for example, when trying to thoroughly clean the area around the sideburns, the protrusions arranged across the entire surface of the disc-shaped spray plate may not accurately target only the sideburn area, and a large amount of water may flow into the ear canal from other protrusions that do not target the sideburn area. Such problems are particularly problematic when hairdressers and other practitioners are cleaning the scalp and hair of their clients, as they can cause discomfort to the clients, and therefore a solution is strongly desired.

[0005] Therefore, the aim is to provide a showerhead attachment that makes it easier for practitioners to wash the scalp and hair of patients. [Means for solving the problem]

[0006] The shower head attachment according to the present invention comprises a spray surface with water discharge holes formed therein, and a plurality of cleaning protrusions protruding from the spray surface, wherein the spray surface is formed in a triangular or substantially triangular shape when viewed from the front, and has corners corresponding to a bent portion which is a bent outer edge, and the protrusions are provided at the corners at positions that form a triangular shape when viewed from the front with one side facing the bent portion.

[0007] The shower head attachment according to the present invention comprises a spray surface with water discharge holes formed therein, and a plurality of cleaning protrusions protruding from the spray surface, wherein the spray surface is formed in a triangular or substantially triangular shape when viewed from the front, and has corners corresponding to a bent portion which is a curved outer edge, and the protrusions are provided at the corners at positions that form a triangular shape with one corner facing the bent portion when viewed from the front.

[0008] The shower head attachment according to the present invention is characterized in that the density per unit area of ​​the protrusions provided in the corners is higher than the density per unit area of ​​the protrusions provided on the water-spraying surface other than the corners.

[0009] The shower head attachment according to the present invention is characterized in that the water spraying surface has a first group of discharge holes consisting of a plurality of discharge holes formed near the center of the water spraying surface, and the total area of ​​the discharge holes in the first group of discharge holes is 50% or more of the total area of ​​all the discharge holes formed on the water spraying surface.

[0010] The shower head attachment according to the present invention comprises a brush portion having the water-spraying surface, and a base to which the brush portion is attached at one end and which is attached to a shower head at the other end, characterized in that the brush portion is rotatable relative to the base.

[0011] The shower head attachment according to the present invention comprises a brush portion having the water-spraying surface, and a base to which the brush portion is attached at one end and which is attached to the shower head at the other end, wherein when the base to which the brush portion is attached is mounted on the shower head, and the tip of the shower head is pointed upward and the hose connection port of the shower head is pointed downward, one of the corners is pointed downward.

[0012] The shower head attachment according to the present invention comprises a spray surface with water discharge holes formed therein, and a plurality of cleaning protrusions protruding from the spray surface, wherein the spray surface is formed in a triangular or substantially triangular shape when viewed from the front, has corners corresponding to bent portions which are curved outer edges, and one of the protrusions is provided at each of the corners. [Effects of the Invention]

[0013] The showerhead attachment according to the present invention has a spray surface that is triangular or substantially triangular in shape when viewed from the front, and has corners corresponding to the bent outer edge, with a protrusion for cleaning provided at these corners. Generally, when a practitioner such as a hairdresser washes a client's scalp and hair, they hold the showerhead with one hand and massage the scalp and hair with the other. Also, when washing around the ears, such as the sideburns or behind the ears, they may cover the client's ears with the other hand while rinsing with water sprayed from the showerhead. When performing such washing, for example, with a showerhead attachment whose spray surface is circular, it is difficult to accurately target the area to be washed, and if one tries to wash forcibly, water may flow into the client's ear canal. Therefore, with the showerhead attachment according to the present invention, since the spray surface that is triangular or substantially triangular has corners corresponding to the bent portion, it is possible to accurately target only the area to be washed using these corners. This makes it easier to prevent water from flowing into the ear canal of the person being treated, and also makes it easier for the practitioner to wash the scalp and hair of the person being treated. Furthermore, at the corners, protrusions are provided in a triangular shape when viewed from the front, with one side facing the bend. In other words, at these corners, two protrusions are provided near the bend. As a result, the force transmitted from the protrusions is less likely to concentrate at one point near the bend, so even if the watering surface is formed on a plate-shaped member made of an elastic material such as rubber, bending of the plate-shaped member on which the watering surface is formed, or the corner, can be prevented.

[0014] The shower head attachment according to the present invention has a spray surface that is triangular or substantially triangular in shape when viewed from the front, and has corners that correspond to the bent outer edge, and a cleaning protrusion is provided at this corner. As with the shower head attachment described above, the triangular spray surface has corners that correspond to the bent part, so it is possible to accurately target only the area to be cleaned using this corner. This makes it easier to prevent water from flowing into the ear canal of the person being treated, and makes it easier for the practitioner to clean the scalp and hair of the person being treated. Furthermore, the corner has a protrusion positioned so that one corner is facing the bent part when viewed from the front, forming a triangular shape. In other words, this corner has one protrusion near the bent part and two protrusions that are closer to the center of the spray surface than this protrusion. As a result, the single protrusion provided near the bent part can more accurately target and clean the area to be cleaned.

[0015] In the shower head attachment according to the present invention, the density of protrusions per unit area provided in the corners is higher than the density of protrusions per unit area provided in the spray surface other than the corners. As a result, compared to cleaning using the spray surface other than the corners, a more thorough cleaning can be performed using more protrusions.

[0016] The shower head attachment according to the present invention has a water-spraying surface having a first group of discharge holes consisting of multiple discharge holes formed near the center of the water-spraying surface, and the total area of ​​the discharge holes in this first group of discharge holes is 50% or more of the total area of ​​all discharge holes formed on the water-spraying surface. Here, for example, if many discharge holes are formed near the parts corresponding to the sides of a triangular or roughly triangular water-spraying surface, the hot water discharged from these discharge holes will quickly reach the outer edge of the water-spraying surface and flow off the surface. Therefore, it is difficult to ensure a sufficient amount of water in the corners. However, with the shower head attachment according to the present invention, since the total area of ​​the discharge holes in the first group of discharge holes is 50% or more of the total area of ​​all discharge holes formed on the water-spraying surface, most of the hot water flowing from the water-spraying surface will be discharged from the discharge holes formed near the center of the water-spraying surface as the first group of discharge holes. As a result, the amount of water will not be concentrated in the parts corresponding to the sides of a triangular or roughly triangular water-spraying surface, and a sufficient amount of water can be ensured even in the corners.

[0017] The shower head attachment according to the present invention comprises a brush section having a water-spraying surface and a base to which the brush section is attached and which is mounted on a shower head, with the brush section being rotatable relative to the base. Therefore, for example, if one of the corners is used frequently and deteriorates, the arrangement of the corners can be changed by rotating the brush section relative to the base, allowing the use of a different corner other than the deteriorated one. Thus, it can be used for a longer period of time compared to a brush section that is fixed to the base.

[0018] The shower head attachment according to the present invention comprises a brush portion with a water-spraying surface formed thereon, and a base to which the brush portion is attached and which is mounted on the shower head. When the base to which the brush portion is attached is mounted on the shower head, and the tip of the shower head is pointed upward and the hose connection port of the shower head is pointed downward, one of the corners will be pointed downward. Therefore, when a hairdresser or other professional uses the shower head, they generally hold the entire shower head with one hand, and the hose connection port is positioned on the wrist side of that hand, so one of the corners of the water-spraying surface is also positioned on the wrist side. In this case, the water-spraying surface will have an inverted triangle shape or a roughly inverted triangle shape that widens from the wrist side towards the fingers. More specifically, when the tip of the shower head is pointed upward and the hose connection port of the shower head is pointed downward, and the water-spraying surface is viewed from the front, the water-spraying surface will have one of its corners pointed downward, and the opposite side facing this corner will be positioned on the upper side, resulting in an inverted triangle shape or a roughly inverted triangle shape. For example, when washing the scalp and hair of a client lying on their back in a hair salon, the opposite side of the spray surface can be used to wash along the client's forehead, then one of the corners connected to that side can be used to wash the sideburns, and then another side connected to the corner used for washing the sideburns can be used to wash behind the ears. In this way, the practitioner can easily wash the entire scalp using the opposite side, corner, and other sides of the spray surface simply by twisting the wrist holding the shower head, without having to readjust their grip on the shower head during the treatment.

[0019] The shower head attachment according to the present invention has a spray surface that is triangular or substantially triangular in shape when viewed from the front, with corners corresponding to the bent outer edge portion, and one cleaning protrusion is provided at each of these corners. Therefore, in addition to being easy to wash the scalp and hair, similar to the shower head attachment described above, the protrusions provided only at the corners can also be used to press on the scalp and relax it. [Brief explanation of the drawing]

[0020] [Figure 1] Perspective view of the attachment for a shower head according to the first embodiment of the present invention. [Figure 2] Perspective view showing the state where the attachment for a shower head according to the first embodiment of the present invention is attached to the shower head. [Figure 3] Perspective view of the brush part of the attachment for a shower head according to the first embodiment of the present invention. [Figure 4] Front view of the attachment for a shower head according to the first embodiment of the present invention. [Figure 5] Cross-sectional view of the attachment for a shower head according to the first embodiment of the present invention, cut along the line A-A shown in FIG. 4. [Figure 6] Rear view of the brush part of the attachment for a shower head according to the first embodiment of the present invention. [Figure 7] Explanatory drawing for explaining the water discharge holes of the attachment for a shower head according to the first embodiment of the present invention. [Figure 8] Perspective view of the base of the attachment for a shower head according to the first embodiment of the present invention. [Figure 9] Front view of the base of the attachment for a shower head according to the first embodiment of the present invention. [Figure 10] Right side view of the attachment for a shower head according to the first embodiment of the present invention. [Figure 11] Plan view of the attachment for a shower head according to the first embodiment of the present invention. [Figure 12] Bottom view of the attachment for a shower head according to the first embodiment of the present invention. [Figure 13] Rear view of the attachment for a shower head according to the first embodiment of the present invention. [Figure 14] Perspective view of the attachment for a shower head according to a modified example of the present invention.

Modes for Carrying Out the Invention

[0021] Hereinafter, with reference to the attached drawings, a shower head attachment according to the first embodiment of the present invention (hereinafter, the "shower head attachment" will also be referred to as the "attachment") will be described. Figure 1 is a perspective view of attachment 1 according to the first embodiment of the present invention. In the following description, as shown in Figure 1, the width direction of attachment 1 will be the left-right direction X, the height direction of attachment 1 will be the up-down direction Y, and the depth direction of attachment 1 will be the front-back direction Z.

[0022] Attachment 1 is used, for example, in a barber or beautician's office to wash the scalp and hair (hereinafter, "scalp and hair" is also referred to as "scalp, etc.") of a client or other person receiving a service. Attachment 1 comprises a brush section 3 having a water-spraying surface 2 and a base 4 to which the brush section 3 is attached. The water-spraying surface 2 of the brush section 3 is provided with multiple washing protrusions 5 that can be used for washing the scalp, etc. or for scalp relaxation, and is also provided with multiple water outlets 6 for spraying hot water. As shown in Figure 2, Attachment 1 is mounted on a shower head 100 with the base 4 attached, and is used to wash the scalp, etc. or for scalp relaxation using the protrusions 5 while spraying hot water supplied through the shower head 100 from the water outlets 6.

[0023] The brush portion 3 is made of an elastic material such as rubber and is formed as a plate-shaped member with the front-to-back direction Z as the thickness direction, as shown in Figure 3. The front surface of this brush portion 3 is the water spraying surface 2, which is formed in a roughly inverted triangular shape when viewed from the front, as shown in Figure 4. Furthermore, as shown in Figure 5, a projection 5 is provided on the water spraying surface 2, and a circular water discharge hole 6 is formed that penetrates the water spraying surface 2 and the brush portion 3 on which the water spraying surface 2 is formed in the front-to-back direction Z. On the rear side of the brush portion 3, as shown in Figure 6, a folded-back piece 3a is provided that protrudes from the periphery of the water spraying surface 2 toward the rear and is folded toward the back side of the water spraying surface 2. This folded-back piece 3a forms a mounting groove 3b on the back side of the water spraying surface 2 of the brush portion 3 for attaching the brush portion 3 to the base 4 (Figure 5). The first flange portion 4a of the base 4, which will be described later, is inserted into this mounting groove 3b. Therefore, the folded portion 3a is provided with a notch 3c to facilitate insertion of the first flange portion 4a into the mounting groove 3b while elastically deforming the folded portion 3a.

[0024] As shown in Figure 4, the spray surface 2 has three bent portions 2a, which are outer edge parts that bend with a relatively large curvature to match its roughly inverted triangular shape, and one of these bent portions 2a is located on the lower side in the vertical direction Y when viewed from the front. The spray surface 2 has a central part 2c, which is the part around the center 2b of the spray surface 2 where the water discharge holes 6 are formed, an outer part outside the central part 2c which is the part corresponding to each side of the roughly inverted triangular shape which is the side portion 2d, and an outer part outside the central part 2c which is the corner portion 2e that corresponds to each of the roughly inverted triangular bent portions 2a. Furthermore, when the base 4 to which the brush portion 3 is attached is mounted on the shower head 100, with the tip portion 101 of the shower head 100 facing upwards and the hose connection port 110 of the shower head 100 facing downwards, the corner portion 2e located on the lower side of the spray surface 2 as shown in Figure 4 is facing downwards (Figure 2).

[0025] Furthermore, the portions of the outer edge of the sprinkling surface 2 corresponding to each side 2d other than the bent portion 2a are formed in an arc shape with a relatively small curvature. As a result, the overall shape of the outer edge of the sprinkling surface 2 is a rounded, roughly inverted triangle. Note that the outer edge shape of the sprinkling surface 2 is not limited to a roughly inverted triangle; it may also be a roughly triangular shape with one of the corners 2e positioned on the upper side, or it may be a roughly inverted triangle or triangular shape where the outer edge of the sprinkling surface 2 is composed only of straight lines. When the outer edge of the sprinkling surface 2 is composed only of straight lines, the bent portion 2a becomes the corner portion formed by two straight lines. In addition, it is preferable that the roughly inverted triangle, roughly triangular, inverted triangle, or triangular shape adopted as the outer edge shape of the sprinkling surface 2 has three sides or the lengths of the outer edge portions corresponding to three sides are equal. As a result, as with attachment 1, each bent section 2a has the same bending angle, and the corners 2e corresponding to each bent section 2a can be treated similarly, resulting in better operability compared to other triangular watering surfaces with unequal side lengths, such as isosceles or right triangles. In particular, as with attachment 1, when the corners 2e corresponding to each bent section 2a have the same shape, there is no need to select the corner 2e to use according to the area to be cleaned, thus improving operability.

[0026] On attachment 1, the projections 5 are provided at intervals from each other at the center 2c, sides 2d, and corners 2e of the watering surface 2. The projections 5 are conical in shape, projecting forward from the watering surface 2, with their tips 5a formed in a hemispherical shape (Figure 3). As shown in Figure 4, in a front view, at the center 2c of the watering surface 2, three projections 5 are provided in an inverted triangular shape surrounding the center 2b, and six projections 5 are provided in a hexagonal shape surrounding these three projections 5. In addition, at the sides 2d of the watering surface 2, three projections 5 are provided in a row at intervals along the outer edge of the watering surface 2.

[0027] Furthermore, each of the corners 2e is provided with three protrusions 5 at positions that form a triangular shape with one side facing the bent portion 2a. Specifically, taking the lower corner 2e shown in Figure 4 as an example, two first corner protrusions 5b are provided on the left and right sides of the sprinkling surface 2, spaced apart, near the bent portion 2a. A second corner protrusion 5c is provided, shifted upward in the vertical direction Y from the midpoint between these first corner protrusions 5b. These three protrusions 5 (first corner protrusions 5b and second corner protrusions 5c) provided on the corners 2e are positioned so that they form an equilateral triangle with equal spacing when the sprinkling surface 2 is viewed from the front. Also, in this case, the three protrusions 5 are positioned so that one side of the equilateral triangle formed by these protrusions 5, specifically the line segment L connecting the tips 5a of the two first corner protrusions 5b, faces the bent portion 2a.

[0028] Furthermore, the protrusions 5 provided at the corners 2e (first corner protrusion 5b and second corner protrusion 5c) are more closely spaced and densely arranged compared to the protrusions 5 provided at the center 2c and edges 2d. Therefore, the density of the protrusions 5 (first corner protrusion 5b and second corner protrusion 5c) per unit area at the corners 2e is higher than that of the protrusions 5 provided on the other watering surfaces 2.

[0029] The discharge holes 6 are circular holes with a diameter of 2 mm and are formed in the central part 2c of the watering surface 2. Thirteen discharge holes 6 are formed in the central part 2c, closer to the center of the central part 2c, in other words, densely clustered in or near the center 2b. These thirteen discharge holes 6 constitute the first discharge hole group 6a. Nine discharge holes 6 formed around this first discharge hole group 6a and arranged in a circular shape constitute the second discharge hole group 6b. Here, on the watering surface 2, the total area of ​​the thirteen discharge holes 6 in the first discharge hole group 6a is adjusted to be 50% or more of the total area of ​​all 22 discharge holes 6 formed on the watering surface 2 (all discharge holes 6 in the first discharge hole group 6a and the second discharge hole group 6b).

[0030] Specifically, as shown in Figure 7, assuming that the radius of the inscribed circle IC, which is tangent to the side portion of the outer edge of the roughly inverted triangular-shaped sprinkler surface 2, is 28 mm, then all the sprinkler holes 6 of the first sprinkler hole group 6a are arranged inside a virtual circle VC1 with a radius of 13 mm that is concentric with the inscribed circle IC, and all the sprinkler holes 6 of the first sprinkler hole group 6a and the second sprinkler hole group 6b are arranged inside a virtual circle VC2 with a radius of 17 mm that is concentric with the inscribed circle IC. In this case, the area of ​​the sprinkler holes 6, which have a diameter of 2 mm, is 1π mm². 2 Therefore, the total area of ​​all 22 discharge holes 6 formed on the sprinkling surface 2 is 22π mm². 2 As a result, all of these are formed inside the virtual circle VC2 as the first discharge hole group 6a and the second discharge hole group 6b, and they account for 60% of the total area of ​​all discharge holes 6 on the sprinkling surface 2, which is 13π mm. 2 This means that the first group of discharge holes 6a is formed inside the virtual circle VC1. Therefore, in attachment 1, the total area of ​​all discharge holes 6 in the first group of discharge holes 6a is 50% or more of the total area of ​​all discharge holes 6 on the spray surface 2. The number, shape, area, and arrangement of the water outlets 6 can be changed as desired, but in order to eliminate uneven distribution of water from the water outlets 6, it is preferable that at least 90% of the total area of ​​all water outlets 6 on the watering surface 2 is formed within the virtual circle VC2 and at least 50% is formed within the virtual circle VC1.

[0031] Furthermore, the first discharge nozzle group 6a consists of one discharge nozzle 6 formed at the center 2b, three discharge nozzles 6 formed in an equilateral triangle shape surrounding this discharge nozzle 6, and three discharge nozzles 6 formed in an isosceles triangle shape with their vertices facing each side 2d, on the side 2d side of each of the three discharge nozzles 6. On the other hand, the second water outlet group 6b consists of nine water outlets 6 formed in a circular shape surrounding the first water outlet group 6a. The water outlets 6 of the second water outlet group 6b are formed in the central part 2c between the protrusions 5 that form a hexagon, in other words, in the parts corresponding to the sides of the hexagon formed by the six protrusions 5. Specifically, of these parts, two water outlets 6 are formed in the part facing the corner 2e, and one water outlet 6 is formed in the part facing the side 2d. In this way, since more water outlets 6 of the second water outlet group 6b are formed on the corner 2e side than on the side 2d side, the attachment 1 ensures a sufficient amount of water in the corner 2e.

[0032] The base 4 is formed of a synthetic resin such as acrylonitrile styrene acrylic acid polymer (ASA) and is a cylindrical member with the front-to-back direction Z as its axis, as shown in Figure 8. The front end (one end) of the base 4 is provided with a first flange portion 4a that extends radially from the outer circumference of the base 4. Further back from the first flange portion 4a of the base 4, a second flange portion 4b is provided, slightly spaced apart from the first flange portion 4a, and extending radially from the outer circumference of the base 4. As shown in Figure 9, the first flange portion 4a and the second flange portion 4b are each formed in a substantially inverted triangular shape, with the second flange portion 4b extending slightly larger than the first flange portion 4a.

[0033] Furthermore, the gap S (Figure 8) formed between the first flange portion 4a and the second flange portion 4b is formed to match the thickness of the folded-back piece 3a so that the folded-back piece 3a of the brush portion 3 fits into it. Therefore, when attaching the brush portion 3 to the base 4, as shown in Figure 5, the first flange portion 4a inserted into the mounting groove 3b of the brush portion 3 fits into the mounting groove 3b, and the tip of the folded-back piece 3a is inserted into the gap S between the first flange portion 4a and the second flange portion 4b and fits into it. As a result, as shown in Figure 5 and Figures 10 to 12, the brush portion 3 is firmly attached to the front end of the base 4 without any gaps.

[0034] In the attachment 1 with the brush section 3 attached to the base 4, as shown in Figure 13, when viewed from the rear, the discharge holes 6 of the second discharge hole group 6b are positioned on the back side of the minimum inner diameter section 4d, overlapping with the circumference of the minimum inner diameter section 4d where the inner diameter of the base 4 is smallest. On the other hand, all the discharge holes 6 of the first discharge hole group 6a are densely arranged in a range smaller than the inner diameter of the minimum inner diameter section 4d.

[0035] As described above, the brush section 3 attached to the base 4 can also be rotated 120 degrees relative to the base 4 to change the arrangement of each corner section 2e. In this case, for example, if one of the corner sections 2e is frequently used and deteriorates, the brush section 3 can be rotated 120 degrees relative to the base 4 to change the arrangement of the deteriorated corner section 2e and use a different corner section 2e. In attachment 1, the brush section 3 is configured to be attached and fixed to the base 4, but for example, the brush section 3 may be configured to be rotatable relative to the base 4 by elastic deformation while attached to the base 4. In that case, if the brush section 3 rotates during washing of the scalp, hair is more likely to get tangled in the protrusions 5, so it is preferable to configure the brush section 3 to have enough resistance to prevent it from rotating easily relative to the base 4.

[0036] A mounting opening 4c is formed at the rear end (other end) of the base 4 for attaching to the tip 101 of the shower head 100 (Figure 8). A part of the tip 101 of the shower head 100 is inserted through this mounting opening 4c, and the base 4 is attached to the shower head 100 with the spray plate (not shown) provided on the tip 101 positioned inside the base 4 (Figure 2). The base 4 and the shower head 100 can be fixed in several ways. For example, an engaging projection may be provided on the inner circumferential surface of the base 4, and a recess that fits into this engaging projection may be provided on the outer circumferential surface of the tip 101 of the shower head 100, and these engaging projections and recesses may be fitted together for fixation. Alternatively, a female screw may be provided on the inner circumferential surface of the base 4, and a male screw that screws into this female screw may be provided on the outer circumferential surface of the tip 101 of the shower head 100, and these female and male screws may be screwed together for fixation. When the rear end of the base 4 is attached to the shower head, the hot water supplied via the shower head 100 passes through the inside of the base 4, reaches the back of the water spraying surface 2 of the brush part 3, and is then sprayed from the water discharge holes 6 of the water spraying surface 2.

[0037] Next, I will explain the effects of Attachment 1. Attachment 1 has a spray surface 2 that is formed in a roughly inverted triangular shape and has a corner 2e that corresponds to the bent part 2a. This corner 2e allows for precise targeting of only the area to be washed. As a result, when a hairdresser or other professional is washing the scalp of a client, it is easier to prevent water from flowing into the client's ear canal, making it easier for the professional to wash the scalp of the client. Furthermore, at the corner 2e, protrusions 5 (first corner protrusion 5b and second corner protrusion 5c) are provided in a triangular shape with one side facing the bent portion 2a when viewed from the front. In other words, two protrusions 5 (first corner protrusion 5b) are provided near the bent portion 2a. As a result, the force transmitted from the protrusions 5 is less likely to concentrate at one point near the bent portion 2a, thus preventing bending of the brush portion 3 where the watering surface 2 is formed and the corner 2e.

[0038] Furthermore, in attachment 1, the density per unit area of ​​the protrusions 5 (first corner protrusion 5b and second corner protrusion 5c) provided at the corners 2e is higher than the density per unit area of ​​the protrusions 5 provided at the central part 2c and the edges 2d other than the corners 2e. Therefore, compared to cleaning using the central part 2c and the edges 2d other than the corners 2e, a more thorough cleaning can be performed using more protrusions 5. Moreover, in attachment 1, the water spraying surface 2 has a first group of discharge holes 6a, and the total area of ​​the discharge holes 6 of this first group of discharge holes 6a is 60% of the total area of ​​all discharge holes 6 of the water spraying surface 2. As a result, most of the hot water flowing from the water spraying surface 2 is discharged from the discharge holes 6 formed closer to the center of the water spraying surface 2 as the first group of discharge holes 6a, so the amount of water does not become concentrated at the edges 2d of the roughly inverted triangular water spraying surface 2, and a sufficient amount of water can be secured for the corners 2e as well. Furthermore, because the amount of water is less likely to be concentrated in specific areas of the watering surface 2 (corners 2e or edges 2d), it is possible to prevent hot or cold water overflowing from specific areas from entering the ear canal of the person receiving treatment.

[0039] Furthermore, the brush section 3 of attachment 1 can be rotated 120 degrees relative to the base 4 to change the arrangement of each corner section 2e. Therefore, for example, if one of the corner sections 2e is used frequently and deteriorates, the brush section 3 can be rotated relative to the base 4 to change the arrangement of each corner section 2e and use a different corner section 2e than the deteriorated one. In this case, the brush section 3 can be used for a longer period of time compared to when it is fixed to the base 4. In attachment 1, the brush section 3 is configured to be removable from the base 4 and then reattached with a different arrangement of corner sections 2e, but the brush section 3 may also be configured to be rotatable relative to the base 4 while still attached to the base 4. In this case as well, the same effect can be obtained as described above, where a different corner section 2e than the deteriorated one can be used, allowing for longer-term use.

[0040] Furthermore, when the base 4 of attachment 1 is attached to the shower head 100, with the tip 101 of the shower head 100 facing upwards and the hose connection port 110 of the shower head 100 facing downwards, one of the corners 2e will be facing downwards. Therefore, when a hairdresser or other professional uses the shower head 100, they will grasp the entire shower head 100 with one hand, and the hose connection port 110 will be positioned on the wrist side of that hand. As a result, one of the corners 2e of the watering surface 2 will also be positioned on the wrist side. Consequently, the watering surface 2 will have a roughly inverted triangular shape that widens from the wrist side towards the fingers. For example, when washing the scalp of a client lying on their back in a hair salon or similar establishment, the side portion 2d (opposite side portion) facing the corner portion 2e located on the wrist side can be used to wash along the client's forehead. Following this, the sideburns can be washed using one of the corner portions 2e connected to the side portion 2d, and further, the area behind the ears can be washed using another side portion 2d (other side portion) connected to the corner portion 2e used for washing the sideburns. In this way, the practitioner can easily wash the entire scalp using the side portions 2d (opposite side portion), corner portions 2e, or other side portions 2d (other side portions) of the spray surface 2 simply by twisting the wrist of the hand holding the shower head 100, without having to readjust their grip on the shower head 100 during the treatment.

[0041] [Second Embodiment] Next, an attachment 1' according to a second embodiment of the present invention will be described. Attachment 1' differs from Attachment 1 only in the arrangement of the projection 5' at the corner 2e. Therefore, in the following description of Attachment 1', the same reference numerals will be used for components similar to those in Attachment 1, and only the arrangement of the projection 5' at the corner 2e will be described. Note that the illustration of Attachment 1' is omitted.

[0042] In attachment 1', a projection 5' is provided at the corner 2e, forming a triangular shape with one corner facing the bent portion 2a. In attachment 1 of the first embodiment shown in Figure 4, three projections 5 were arranged so that one side of the equilateral triangle formed by these projections 5, specifically the line segment L connecting the tips 5a of the two first corner projections 5b, faced the bent portion 2a. However, in attachment 1', one first corner projection 5b' is provided near the bent portion 2a, and two second corner projections 5c' are provided, shifted from this first corner projection 5b' toward the center 2b of the watering surface 2, and spaced apart from each other in a direction away from each other. In this configuration, the angles formed by the two line segments connecting each of the second corner projections 5c' to the first corner projection 5b' are positioned toward the bent portion 2a, and the three projections 5 (first corner projection 5b' and second corner projection 5c') are positioned so that one corner of the triangle formed by these projections 5 is toward the bent portion 2a. In attachment 1', the three projections 5 (first corner projection 5b' and second corner projection 5c') are also arranged in an equilateral triangle shape, similar to attachment 1.

[0043] In the attachment 1' configured as described above, in addition to the effects of attachment 1 described above, such as the ease of cleaning due to the presence of corners 2e, the ability to thoroughly clean using the numerous protrusions 5 provided in corners 2e compared to other parts (center 2c and edges 2d), the ability to secure sufficient water volume for corners 2e, and the ability to use a different corner 2e other than the deteriorated corner 2e by rotating the brush part 3 relative to the base 4, the single protrusion 5 (first corner protrusion 5b') provided near the bent part 2a allows for more precise targeting and cleaning of the area to be cleaned.

[0044] [Differentiation] Next, with reference to Figure 14, attachment 10, a modified example of the present invention, will be described. Attachment 10 differs from attachment 1 in the arrangement and shape of the protrusions 7 and the arrangement of the water discharge holes 8. Therefore, in the following description of attachment 10, the same reference numerals will be used for components similar to those in attachment 1, and only the arrangement and shape of the protrusions 7 and the arrangement of the water discharge holes 8 will be described.

[0045] In attachment 10, one projection 7 is provided only at each of the corners 2e. In other words, in attachment 10, no projections 7 are provided at the central part 2c or the edges 2d of the watering surface 2, other than the corners 2e. The projection 7 is cylindrical in shape, projecting forward from the watering surface 2, and its tip 7a is formed in a hemispherical shape. Compared to the projection 5 of attachment 1, the projection 7 has a diameter more than twice as large and a base area more than four times larger, so it protrudes forward from almost the entire area of ​​the corners 2e, and furthermore, the length of the projection that extends forward is also longer than that of projection 5.

[0046] Furthermore, in attachment 10, the water discharge holes 8 formed in the central part 2c of the watering surface 2 are arranged differently from those in attachment 1. Six water discharge holes 8 are formed as first water discharge holes 8a in a regular hexagonal shape, surrounding the central part 2b of the watering surface 2. Sixteen water discharge holes 8 are formed as second water discharge holes 8b in a circular shape, surrounding these six first water discharge holes 8a. The total number of water discharge holes 8 formed on the watering surface 2 is the same as in attachment 1.

[0047] With the attachment 10 configured as described above, in addition to the effects of attachment 1 described above, such as the ease of cleaning due to the presence of corners 2e and the ability to use a different corner 2e than the deteriorated corner 2e by rotating the brush part 3 relative to the base 4, it is possible to use the protrusions 7, which are provided only on each corner 2e, to press on any part of the scalp for relaxation. Furthermore, the cylindrical protrusions 7, whose tip 7a is formed in a hemispherical shape, have a base area more than four times larger than that of the protrusions 5, and are larger overall, making them suitable for pressing on any part of the scalp for relaxation.

[0048] As described above, embodiments of the present invention have been explained in detail, but the present invention is not limited to the above embodiments. Furthermore, the present invention can be modified in various ways without departing from the matters described in the claims.

[0049] For example, in attachments 1, 1', and 10 of this embodiment, an example is shown where the sprinkling surface 2 is a roughly inverted triangle with a generally rounded shape. However, the sprinkling surface 2 is not limited to a roughly inverted triangle shape; it may be a roughly triangular shape with a generally rounded shape, or it may be a roughly triangular or inverted triangle shape with an outer edge composed only of straight lines. Furthermore, the triangular or roughly triangular shape adopted as the outer edge shape of the sprinkling surface 2 is not limited to an inverted triangle or roughly inverted triangle which are the inversions of these shapes vertically, but may also be a triangular or roughly triangular shape tilted at a predetermined angle, and the tilt is arbitrary. Moreover, the sprinkling surface 2 may be an equilateral triangle, a roughly equilateral triangle, an inverted equilateral triangle, or a roughly inverted equilateral triangle, where the lengths of the three sides or the outer edge portions corresponding to the three sides are equal, or it may be another triangular or roughly triangular shape such as an isosceles triangle or a right triangle where the lengths of the three sides or the outer edge portions corresponding to the three sides are not equal. Furthermore, the projections 5 provided at the corners 2e are not limited to being arranged in an equilateral triangle shape, but may also be arranged in other triangular shapes such as isosceles triangles or right triangles, where the lengths of the three sides are not equal, and they do not have to be provided at all corners 2e. Also, the density of projections 5 per unit area at the corners 2e is arbitrary. In addition, the shapes of projections 5 and 7 are not limited to conical or cylindrical shapes, but may also be pyramidal. Furthermore, the number, shape, and arrangement of water outlets 6 and 8 can also be arbitrarily changed. Moreover, when the tip 101 of the shower head 100 is pointed upward and the hose connection port 110 is pointed downward, it is not limited to the state in which any of the corners 2e are pointed downward, and the arrangement of the corners 2e can also be arbitrarily changed. [Explanation of symbols]

[0050] 1,1',10 Attachment for shower head 2 Sprinkling surface 2a Bend part 2b center 2c center 2d edge 2e corner 3. Brush section 3a Folded piece 3b Mounting groove 3c Notch 4 base 4a First flange section 4b Second flange section 4c mounting socket 4d Minimum inner diameter section 5,5′ protrusion 5a tip 5b,5b′ 1st ​​corner protrusion 5c,5c′ 2nd corner protrusion 6 Water outlet 6a 1st water outlet group 6b 2nd water outlet group 7 protrusions 8 Water outlet 8a 1st spout hole 8b 2nd water outlet 100 shower heads 101 Tip 110 Hose connection port IC inscribed circle L-shaped line segment S Gap VC1, VS2 Virtual Yen X Left / right direction Y vertical direction Z front and back direction

Claims

1. A shower head attachment comprising a spray surface with water discharge holes formed therein, and a plurality of cleaning protrusions protruding from the spray surface, The sprinkling surface is formed in a triangular or substantially triangular shape when viewed from the front, and has corners corresponding to the bent portion which is the curved outer edge. The aforementioned corner is provided with a projection in a position that forms a triangular shape when viewed from the front, with one side facing the bent portion. A shower head attachment characterized by the following features.

2. A shower head attachment comprising a spray surface with water discharge holes formed therein, and a plurality of cleaning protrusions protruding from the spray surface, The sprinkling surface is formed in a triangular or substantially triangular shape when viewed from the front, and has corners corresponding to the bent portion which is the curved outer edge. The aforementioned corner is provided with a projection in a position that forms a triangular shape when viewed from the front, with one corner facing the bent portion. A shower head attachment characterized by the following features.

3. The density per unit area of ​​the protrusions provided in the corner is higher than the density per unit area of ​​the protrusions provided on the sprinkling surface other than the corner. An attachment for a shower head according to claim 1 or 2.

4. The sprinkling surface has a first group of discharge holes consisting of a plurality of discharge holes formed near the center of the sprinkling surface. The total area of ​​the discharge holes in the first discharge hole group is 50% or more of the total area of ​​all the discharge holes formed on the spray surface. An attachment for a shower head according to claim 1 or 2.

5. The system comprises a brush section having the aforementioned water-spraying surface, and a base to which the brush section is attached at one end and which is attached to a shower head at the other end. The brush portion is rotatable relative to the base. An attachment for a shower head according to claim 1 or 2.

6. The system comprises a brush section having the aforementioned water-spraying surface, and a base to which the brush section is attached at one end and which is attached to a shower head at the other end. When the base to which the brush portion is attached is mounted to the shower head, and the tip of the shower head is pointed upward and the hose connection port of the shower head is pointed downward, one of the corners is pointed downward. An attachment for a shower head according to claim 1 or 2.

7. A shower head attachment comprising a spray surface with water discharge holes formed therein, and a plurality of cleaning protrusions protruding from the spray surface, The sprinkling surface is formed in a triangular or substantially triangular shape when viewed from the front, and has corners corresponding to the bent portion which is the curved outer edge. One of the aforementioned protrusions is provided at each of the aforementioned corners. A shower head attachment characterized by the following features.

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