Hair catcher and drainage unit

Abstract

To provide a hair catcher that achieves both collection performance for collecting hair and the like and drainage performance.SOLUTION: A hair catcher detachably attachable to a valve shaft of a drain plug disposed in a drain part of a washbowl, comprises: a cylindrical portion through which the valve shaft is insertable; a plurality of collection portions which extend radially outward from the cylindrical portion and are arranged spaced apart in a circumferential direction; and a water-retentive portion which is located radially outward of the collection portions and extends in the circumferential direction.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] SUMMARY OF THE INVENTION Aspects of the present invention generally relate to hair catchers and drainage units. [Background technology]

[0002] A hair catcher that catches hair that has flowed into the drain of a washbasin is known (Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2023-048818 Summary of the Invention [Problem to be solved by the invention]

[0004] A hair catcher needs to have a good balance between its ability to capture hair and its ability to drain. In particular, if the drainage opening is small, poor drainage can cause water to accumulate in the washbasin, which can be unpleasant for users.

[0005] The present invention was made based on the recognition of such problems, and aims to provide a hair catcher and a drainage unit that combine the ability to capture hair and the like with the ability to drain water. [Means for solving the problem]

[0006] The first invention is a hair catcher that can be detachably attached to the plug shaft of a drain plug placed in the drain section of a washbasin, and is characterized by having a cylindrical portion through which the plug shaft can be inserted, a plurality of collection portions extending radially outward from the cylindrical portion and spaced apart circumferentially, and a water retention portion located radially outward from the collection portions and extending circumferentially.

[0007] With this hair catcher, hot and cold water flowing downstream from the drain of the washbasin flows along the inner surface of the drain and the drain fitting attached to the drain and flows into the water retention section of the hair catcher. The flow of hot and cold water that flows into the water retention section changes direction, moving away from the water retention section and toward the center. At this time, a pool of turbulent water forms around the collection section. This allows hair to be efficiently entangled in the collection section, while ensuring a large space for the hot and cold water to flow. Therefore, even with a drain and drain fitting with a small diameter, the hair catcher can efficiently capture hair while maintaining drainage performance.

[0008] The second invention is a hair catcher characterized in that, in the first invention, the water retention section has a first wall section connected to the collection section, a bottom section extending radially outward from the first wall section, and a second wall section located radially outward from the first wall section and extending upward from the bottom section, and the height dimension of the second wall section is greater than the height dimension of the first wall section.

[0009] According to this hair catcher, when the hair catcher is pulled out from the drainage section, the hair collected by the collection section can be prevented from hanging down outside from the outer periphery of the second wall section.

[0010] The third invention is a hair catcher characterized in that, in the first invention, the water retention section has a wall section connected to the collection section and a bottom section extending radially outward from the wall section.

[0011] This hair catcher allows the water retention section to be closer to the drainage section or the inner surface of the drain fitting, thereby maximizing the radial length of the collection section and the space between adjacent collection sections. This allows the hair catcher to improve its ability to capture and drain foreign matter such as hair. Furthermore, the water retention section is open on the radial outside, making it easier to clean.

[0012] The fourth invention is a hair catcher characterized in that, in the first invention, the collection portion has a first connection portion connected to the tubular portion and a second connection portion connected to the water retention portion, and the upper end of the first connection portion is located at a height higher than the upper end of the second connection portion.

[0013] According to this hair catcher, the collecting portion can collect hair contained in hot water that has changed direction from the water retention portion toward the tube portion, thereby reducing hair that hangs down from the collecting portion.

[0014] The fifth invention is a hair catcher according to the fourth invention, characterized in that the upper surface of the collection portion is inclined upward from the upper end of the second connection portion to the upper end of the first connection portion.

[0015] With this hair catcher, hot and cold water that flows from the water retention section toward the tubular section faces the collection section. Therefore, the collection section can capture hair that flows toward the tubular section, improving collection performance. Also, when cleaning the hair catcher, hair can be easily pinched with fingers.

[0016] A sixth invention is the hair catcher according to any one of the first to fifth inventions, characterized in that the tubular portion extends downward beyond the water retention portion.

[0017] With this hair catcher, the part of the tubular portion that extends below the water retention portion can be grasped to attach and detach the hair catcher from the drain plug without touching hair or other debris.

[0018] The seventh invention is a drainage unit comprising a washbasin having a drainage section and a hair catcher arranged inside the drainage section, wherein the hair catcher has a cylindrical section, a plurality of collection sections extending radially outward from the cylindrical section and spaced apart circumferentially, and a water retention section positioned radially outward from the collection sections and extending circumferentially.

[0019] With this drainage unit, hot and cold water flowing downstream from the drain of the washbasin flows along the inner surface of the drain and the drain fitting attached to the drain and flows into the water retention section of the hair catcher. The flow of hot and cold water that flows into the water retention section changes direction, moving away from the water retention section and toward the center. At this time, a pool of turbulent water forms around the collection section. This allows hair to be efficiently entangled in the collection section, while ensuring a large space for the hot and cold water to flow. Therefore, even with a drainage section and drain fitting with a small diameter, the hair catcher can efficiently capture hair while maintaining drainage performance. [Effects of the Invention]

[0020] According to an aspect of the present invention, a hair catcher and a drainage unit are provided that combine the ability to capture hair and the like with the ability to drain water. [Brief explanation of the drawings]

[0021] [Figure 1] 1 is a perspective view showing a drainage unit equipped with a hair catcher according to a first embodiment of the present invention. FIG. [Figure 2] 2 is a cross-sectional view of the drainage unit in FIG. 1 as viewed from the direction of arrow AA. [Figure 3] FIG. 2 is a perspective view showing the drain plug and the hair catcher. [Figure 4] FIG. 2 is an exploded perspective view showing the state in which the hair catcher has been removed from the plug portion of the drain plug. [Figure 5] FIG. 2 is a front view of the hair catcher. [Figure 6] 6 is a cross-sectional view of the hair catcher in FIG. 5 as viewed from the direction of arrow BB. [Figure 7] 6 is a cross-sectional view of the hair catcher in FIG. 5 as viewed from the direction of arrow CC. [Figure 8] FIG. 10 is an explanatory diagram showing the state when hot and cold water starts to flow into the drain section. [Figure 9] FIG. 10 is an explanatory diagram showing the state when hot and cold water continues to flow into the drain section. [Figure 10]FIG. 10 is a perspective view showing a hair catcher according to a second embodiment of the present invention. [Figure 11] FIG. 10 is a perspective view showing a hair catcher according to a third embodiment of the present invention. [Figure 12] FIG. 10 is a perspective view showing a hair catcher according to a fourth embodiment of the present invention. [Figure 13] FIG. 10 is a perspective view showing a hair catcher according to a fifth embodiment of the present invention. [Figure 14] FIG. 10 is a perspective view showing a hair catcher according to a sixth embodiment of the present invention. [Figure 15] FIG. 10 is a cross-sectional view of the hair catcher when placed in the drainage section. DETAILED DESCRIPTION OF THE INVENTION

[0022] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, like components are designated by like reference numerals and detailed descriptions thereof will be omitted where appropriate.

[0023] FIG. 1 is a perspective view showing a drainage unit equipped with a hair catcher according to a first embodiment of the present invention. 2 is a cross-sectional view of the drainage unit in FIG. 1 as viewed from the direction of arrow AA. As shown in Figure 1, the drainage unit 1 includes a washbasin 10 and a hair catcher 30. The washbasin 10 has a concave bowl portion 11, a first mounting portion 12 to which a faucet device (not shown) that discharges hot and cold water toward the bowl portion 11 is attached, and a second mounting portion 13 to which an operating portion (not shown) for moving the lid portion 21 of the drain plug 20 up and down is attached.

[0024] The drainage unit 1 is, for example, a vanity unit installed in a washroom. Alternatively, the drainage unit 1 may be, for example, a hand washing basin for a toilet installed inside a toilet room.

[0025] In this specification, the front side from the perspective of a user facing the washbasin 10 will be referred to as the "front", the back side will be referred to as the "rear", the upper side will be referred to as the "top", the lower side will be referred to as the "bottom", the right side will be referred to as the "right", and the left side will be referred to as the "left".

[0026] Bowl portion 11 is the portion that receives the hot and cold water discharged from the faucet device. A drain portion 11a is provided at the bottom of bowl portion 11 for draining the hot and cold water in bowl portion 11. Drain portion 11a is formed in a cylindrical shape that extends in the vertical direction. As shown in FIG. 2, a drain fitting 15 is attached to drain portion 11a. A drain pipe (drain trap) not shown is connected to the lower end of drain fitting 15. The hot and cold water in bowl portion 11 flows from within drain fitting 15 toward the drain pipe.

[0027] 1 and 2, an opening 11b1 that communicates with overflow passage 11b is provided at the upper end of bowl portion 11. Furthermore, as shown in Fig. 2, a communication port 11b2 that communicates overflow passage 11b with drain portion 11a is provided at the lower end of overflow passage 11b.

[0028] Drain fitting 15 has a through-hole at a position corresponding to communication port 11b2. This allows hot and cold water accumulated in bowl portion 11 to flow from opening 11b1 through overflow channel 11b and communication port 11b2 into the inside of drain fitting 15. As a result, hot and cold water is prevented from overflowing from bowl portion 11.

[0029] Drain plug 20 is disposed in drain portion 11a of washbasin 10. Drain plug 20 has lid portion 21 and plug shaft 23. Lid portion 21 is formed to be larger than the upper end opening of drain portion 11a. Figure 2 shows the state in which lid portion 21 is positioned above the upper end opening of drain portion 11a, opening drain portion 11a.

[0030] By operating the operating part attached to the second mounting part 13, the lid part 21 can close the upper opening of the drain part 11a, allowing hot and cold water to be stored in the bowl part 11. The tap shaft 23 extends downward from the center of the back surface of the lid part 21. As shown in Figure 2, the tap shaft 23 is located inside the drain fitting 15.

[0031] Next, the hair catcher 30 attached to the drain plug 20 will be described. FIG. 3 is a perspective view showing the drain plug and the hair catcher. FIG. 4 is an exploded perspective view showing the state in which the hair catcher has been removed from the plug portion of the drain plug. FIG. 5 is a front view of the hair catcher. FIG. 6 is a cross-sectional view of the hair catcher in FIG. 5 as viewed from the direction of arrow BB. FIG. 7 is a cross-sectional view of the hair catcher in FIG. 5 as viewed from the direction of arrow CC.

[0032] The hair catcher 30 is detachably attached to the plug shaft 23 of the drain plug 20. The hair catcher 30 is designed to capture foreign matter such as hair that gets mixed in with the hot and cold water flowing into the drain portion 11a. This allows the drain unit 1 to prevent the drain pipe from becoming clogged with foreign matter. The hair catcher 30 includes a tubular portion 31, a collection portion 33, and a water retention portion 35.

[0033] The plug shaft 23 can be inserted into the tubular portion 31. The tubular portion 31 serves as the central shaft of the hair catcher 30. The tubular portion 31 extends in the vertical direction, and the plug shaft 23 can be inserted into the interior thereof.

[0034] A plurality of ribs 31a extend vertically within the tubular portion 31. In this example, the ribs 31a are provided on the lower portion of the tubular portion 31. The hair catcher 30 is detachably attached to the plug shaft 23, for example, by press-fitting the plug shaft 23 into the ribs 31a inside the tubular portion 31. By separating the drain plug 20 and the hair catcher 30, the drain plug 20 and the hair catcher 30 can be efficiently cleaned. The tubular portion 31 is provided with a first portion 32 and a second portion 37 for collecting foreign matter such as hair.

[0035] The first section 32 is provided on the upper end side of the tubular section 31. The first section 32 is configured to capture foreign matter such as hair and to allow hot and cold water to flow efficiently. The first section 32 is also configured to generate turbulence in the hot and cold water in order to efficiently capture foreign matter. The first section 32 has a capture section 33 and a water retention section 35.

[0036] The collection portions 33 extend radially outward from the tubular portion 31. The collection portions 33 are formed in a thin plate shape (rib shape), and multiple collection portions 33 are provided spaced apart in the circumferential direction. In this example, eight collection portions 33 are provided. As shown in FIG. 6, the collection portions 33 extend radially outward from the tubular portion 31. Hot and cold water flows downward from the space S between adjacent collection portions 33.

[0037] The hair catcher 30 preferably has, for example, three or more collection parts 33. The number and thickness of the collection parts 33 are set by simulation, taking into consideration the drainage performance based on the inner diameter of the drainage part 11a (drainage fitting 15) and the foreign matter collection performance.

[0038] The collecting parts 33 are parts that collect foreign matter such as hair that has become mixed in with the hot water. Foreign matter such as hair is caught by becoming entangled in the multiple collecting parts 33. This allows the hair catcher 30 to efficiently collect foreign matter such as hair and also to efficiently drain the hot water.

[0039] The collection portion 33 has a first connection portion 33a that connects to the tubular portion 31 and a second connection portion 33b that connects to the water retention portion 35. As shown in FIG. 7, the upper end 33a1 of the first connection portion 33a is located at a height equal to or higher than the upper end 33b1 of the second connection portion 33b. The upper end 33a1 of the first connection portion 33a is located at a height equal to or higher than the upper end of the first wall portion 35a. In this example, the upper end 33a1 of the first connection portion 33a is located higher than the water retention portion 35. This allows hair tangled in the collection portion 33 to be easily picked up with the fingers, improving the ease of cleaning the hair catcher 30.

[0040] Upper surface 33c of collection portion 33 is angled upward by 0 degrees or more with respect to a horizontal plane passing through upper end 33b1 of second connection portion 33b. In this example, upper surface 33c of collection portion 33 is inclined upward from upper end 33b1 of second connection portion 33b toward upper end 33a1 of first connection portion 33a. In this example, upper surface 33c of collection portion 33 is a curved surface that is recessed downward.

[0041] The water retention portion 35 is located radially outside the collection portion 33 and extends circumferentially. The water retention portion 35 connects the tip ends of multiple collection portions 33. The water retention portion 35 is formed in a ring shape that corresponds to the inner diameter of the drain fitting 15. The water retention portion 35 changes the flow direction of hot water flowing from above to below in a lateral (horizontal) direction. The water retention portion 35 has a first wall portion 35a, a bottom portion 35b, and a second wall portion 35c.

[0042] The first wall portion 35a is connected to the collection portion 33. That is, the first wall portion 35a is an inner wall portion of the water retention portion 35. In this example, the upper surface 33c of the collection portion 33 and the upper surface of the first wall portion 35a are formed continuously.

[0043] The bottom surface portion 35b extends radially outward from the first wall portion 35a. The bottom surface portion 35b connects the first wall portion 35a and the second wall portion 35c. In this example, the bottom surface portion 35b extends laterally from the lower end of the first wall portion 35a.

[0044] The second wall portion 35c is located radially outward of the first wall portion 35a and extends upward from the bottom surface portion 35b. That is, the second wall portion 35c faces the first wall portion 35a laterally. The water retention portion 35 is formed into a recessed shape with an open top by the first wall portion 35a, the bottom surface portion 35b, and the second wall portion 35c. In other words, the water retention portion 35 is an annular groove portion.

[0045] 7, the height dimension of the second wall portion 35c is greater than the height dimension of the first wall portion 35a. That is, the upper surface of the second wall portion 35c is located higher than the upper surface of the first wall portion 35a. This prevents foreign matter such as hair collected by the collection portion 33 from dripping outside the second wall portion 35c. The height dimension of the second wall portion 35c may be the same as or lower than the height dimension of the first wall portion 35a.

[0046] In water retention section 35, dimension L between first wall section 35a and second wall section 35c is, for example, about 5 to 10% (e.g., about 1 to 2 mm) of radius r of the outer diameter of first section 32. That is, the width dimension of the upper end opening of water retention section 35 is about 5 to 10% (e.g., about 1 to 2 mm) of the radius of the outer diameter of first section 32. Furthermore, the height dimension of first wall section 35a and second wall section 35b is 0.1 mm or more. Note that the height dimension of first wall section 35a and the height dimension of second wall section 35b may be different. The flow of hot and cold water through water retention section 35 will be described later.

[0047] The second section 37 is provided on the lower end side of the tubular portion 31. The second section 37 is provided below the first section 32. As shown in FIG. 2, the second section 37 is located below the communication port 11b2 provided in the overflow passage 11b. The second section 37 serves to capture foreign matter such as hair that has become mixed in with the hot water flowing through the overflow passage 11b, in addition to foreign matter such as hair that could not be captured by the first section 32. The hair catcher 30 does not necessarily have to have the second section 37. The second section 37 is provided as needed.

[0048] The second portion 37 has a collection portion 38 extending radially outward from the cylindrical portion 31, and an annular portion 39 located radially outward of the collection portion 38. The collection portion 38 extends radially outward from the cylindrical portion 31. The collection portion 38 is formed in a thin plate shape (rib shape), and a plurality of collection portions 38 are provided spaced apart in the circumferential direction. In this example, eight collection portions 38 are provided. The collection portions 38 extend radially outward from the cylindrical portion 31.

[0049] Hot water flows downward from the spaces between adjacent collection sections 38. Collection sections 38 are sections that capture foreign matter such as hair that has become mixed in with the hot water. Foreign matter such as hair becomes entangled in the multiple collection sections 38 and is captured. Annular section 39 is located radially outside the multiple collection sections 38 and extends circumferentially. Annular section 39 connects the tip ends of the multiple collection sections 38.

[0050] The hair catcher 30 has the above-described configuration, and the flow of hot and cold water (drainage water) that flows into the drainage portion 11a (drainage metal fitting 15) will now be described. FIG. 8 is an explanatory diagram showing a state when hot and cold water starts to flow into the drain section. FIG. 9 is an explanatory diagram showing a state when hot and cold water continues to flow into the drain section.

[0051] First, as shown in Figure 8, hot water W flows along the inner surface of the drain fitting 15 into the water retention section 35. The water retention section 35 is formed in a concave shape that is open at the top. The hot water that flows into the water retention section 35 bounces off the bottom surface section 35b and flows horizontally (towards the tube section 31). In other words, the hot water that flows into the water retention section 35 flows horizontally over the first wall section 35a. In this way, the water retention section 35 changes the direction of the hot water W that flows from above downwards to the horizontal direction.

[0052] 9, the hot water W flowing from above downward and the hot water W flowing laterally mix together, forming a turbulent pool around the collection unit 33. In other words, the flow of hot water becomes an irregular random flow above the collection unit 33. This allows hair mixed into the hot water W to be efficiently collected by the collection unit 33.

[0053] The hot and cold water W then flows downward from the space S. Because the collection portion 33 is formed in a thin plate shape, it is possible to ensure that the space S is as large as possible. As a result, the hair catcher 30 is able to ensure drainage performance in addition to the ability to collect hair and the like.

[0054] Here, for example, if hot and cold water W flows from above downward at the location of collection unit 33, hair will be collected so that it hangs downward from collection unit 33. In such a case, it may be difficult to remove the hair. Also, if hot and cold water W flows from above downward at the location of collection unit 33, there is a risk that the hair will not be collected by collection unit 33 and will fall out of space S.

[0055] Therefore, the hair catcher 30 changes the direction of the hot water W, which flows from above to below, to the horizontal direction by the water retention section 35. The hot water W flowing in the horizontal direction faces the collection section 33. This makes it easier for hair mixed in with the hot water W to become entangled in the collection section 33 in the circumferential direction of the tube section 31.

[0056] The hot and cold water W flowing from above downward splashes off the top surface of the second wall portion 35c and the bottom surface portion 35b, generating turbulence around the collection portion 33. By generating turbulence around the collection portion 33, multiple hairs can also be entangled. As a result, the hair is collected in the collection portion 33 so that it wraps around the tubular portion 31. In other words, the hair catcher 30 can collect many hairs in a flat manner across multiple collection portions 33.

[0057] Next, cleaning of the drain plug 20 and the hair catcher 30 will be described.

[0058] First, by pulling the cover 21 of the drain plug 20 upward from the drain portion 11a (drain fitting 15), the drain plug 20 and the hair catcher 30 can be removed together from the washbasin 10. Next, by pulling the plug shaft 23 of the drain plug 20 out of the cylindrical portion 31 of the hair catcher 30, the drain plug 20 and the hair catcher 30 can be separated.

[0059] In this case, the tubular portion 31 of the hair catcher 30 extends downward below the water retention portion 35. This allows the plug shaft 23 to be pulled out of the tubular portion 31 by grasping the portion of the tubular portion 31 that is located below the first portion 32 (water retention portion 35) (the portion between the first portion 32 and the second portion 37) and pulling the cover portion 21. In this case, debris such as hair is collected in a flat plane in the collection portion 33 of the first portion 32. Therefore, the user can pull out the plug shaft 23 from the tubular portion 31 without touching the debris.

[0060] The upper surface 33c of the collection part 33 is inclined upward from the water retention part 35 side toward the tubular part 31 side. This allows the user to easily pinch and remove hair collected by the collection part 33. In this case, the user can clean the hair catcher 30 while gripping the part of the tubular part 31 that is located below the water retention part 35.

[0061] The hair catcher 30 according to the first embodiment comprises a tubular portion 31 through which the plug shaft 23 can be inserted, a plurality of collection portions 33 extending radially outward from the tubular portion 31 and spaced apart circumferentially, and a water retention portion 35 located radially outward from the collection portion 33 and extending circumferentially.

[0062] As a result, hot and cold water flowing downstream from drain portion 11a of washbasin 10 flows along the inner surface of drain portion 11a and drain fitting 15 into water retention portion 35 of hair catcher 30. The hot and cold water that flows into water retention portion 35 changes its flow direction from water retention portion 35 toward the center (tubular portion 31). At this time, a turbulent pool of water is created around collection portion 33. This allows hair to be efficiently entangled in collection portion 33 and ensures a large space for hot and cold water to flow. Therefore, hair catcher 30 can efficiently capture hair while maintaining drainage performance even when drain portion 11a and drain fitting 15 have small diameters, for example, between 20 mm and 35 mm.

[0063] Water retention section 35 has first wall section 35a connected to collection section 33, bottom surface section 35b extending radially outward from first wall section 35a, and second wall section 35c located radially outward from first wall section 35a and extending upward from bottom surface section 35b. Second wall section 35c has a height dimension greater than that of first wall section 35a.

[0064] This prevents the hair collected by the collecting portion 33 from hanging down from the outer periphery of the second wall portion 35c when the hair catcher 30 is pulled out from the drain portion 11a.

[0065] In addition, the collection portion 33 has a first connection portion 33a connected to the tubular portion 31 and a second connection portion 33b connected to the water retention portion 35, and the upper end 33a1 of the first connection portion 33a is located at a height higher than the upper end 33b1 of the second connection portion 33b.

[0066] This allows collection portion 33 to collect hair contained in hot water that has changed direction from water retention portion 35 toward tube portion 31, thereby reducing hair hanging down from collection portion 33.

[0067] Additionally, the upper surface 33c of the collection portion 33 is inclined upward from the upper end 33b1 of the second connection portion 33b toward the upper end 33a1 of the first connection portion 33a.

[0068] As a result, the hot and cold water that has changed direction from the water retention section 35 toward the tubular section 31 is positioned opposite the collection section 33. Therefore, the collection section 33 can collect hair that is heading toward the tubular section 31, improving collection performance. Also, when cleaning the hair catcher 30, hair can be easily pinched with fingers.

[0069] Additionally, the tubular portion 31 extends downward beyond the water retention portion 35. This allows the hair catcher 30 to be attached to and detached from the drain plug 20 without coming into contact with debris such as hair.

[0070] Next, a hair catcher 50 according to a second embodiment will be described with reference to FIG. FIG. 10 is a perspective view showing a hair catcher according to a second embodiment of the present invention.

[0071] The hair catcher 30 according to the first embodiment described above has been described with reference to an example in which the upper surface 33c of the collecting portion 33 is curved. However, as in the hair catcher 50 according to the second embodiment shown in Fig. 10, the upper surface 51c of the collecting portion 51 may be formed as an inclined flat surface.

[0072] Collection unit 51 has a first connection portion 51a that connects to tubular portion 31 and a second connection portion 51b that connects to water retention unit 35. Upper end 51a1 of first connection portion 51a is located at a height equal to or higher than upper end 51b1 of second connection portion 51b. In this case, upper end 51a1 of first connection portion 51a is located above water retention unit 35. Furthermore, upper end 51b1 of second connection portion 51b is located below the upper surface of first wall portion 35a of water retention unit 35. This type of collection unit 51 can also have the same effects as collection unit 33 according to the first embodiment.

[0073] Next, a hair catcher 55 according to a third embodiment will be described with reference to FIG. FIG. 11 is a perspective view showing a hair catcher according to a third embodiment of the present invention.

[0074] 11, the upper surface 56c of the collection portion 56 may be a horizontal flat surface. The collection portion 56 has a first connection portion 56a that connects to the tubular portion 31 and a second connection portion 56b that connects to the water retention portion 35. An upper end 56a1 of the first connection portion 56a is located at a height equal to or higher than an upper end 56b1 of the second connection portion 56b. In this example, the upper end 56a1 of the first connection portion 56a is located at the same height as an upper end 56b1 of the second connection portion 56b.

[0075] An upper end 56a1 of first connecting portion 56a is located at the same height as the upper surface of first wall portion 35a of water retention portion 35. Furthermore, an upper end 56b1 of second connecting portion 56b is located at the same height as the upper surface of first wall portion 35a of water retention portion 35. In other words, an upper surface 56c of collection portion 56 is continuous with the upper surface of first wall portion 35a. This type of collection portion 56 can also have the same effects as collection portion 33 according to the first embodiment.

[0076] Next, a hair catcher 60 according to a fourth embodiment will be described with reference to FIG. FIG. 12 is a perspective view showing a hair catcher according to a fourth embodiment of the present invention.

[0077] The hair catcher 55 of the third embodiment described above has been described with reference to an example in which the upper surface 56c of the collection portion 56 is located at the same height as the upper surface of the first wall portion 35a of the water retention portion 35. However, as in a hair catcher 60 according to a fourth embodiment shown in Fig. 12, the upper surface 61c of the collection portion 61 may be located at a higher position than the upper surface of the first wall portion 35a of the water retention portion 35.

[0078] The collection portion 61 has a first connection portion 61a that connects to the tubular portion 31 and a second connection portion 61b that connects to the water retention portion 35. An upper end 61a1 of the first connection portion 61a is located at a height equal to or higher than an upper end 61b1 of the second connection portion 61b. In this example, the upper end 61a1 of the first connection portion 61a is located at the same height as an upper end 61b1 of the second connection portion 61b.

[0079] Furthermore, the upper end 61b1 of the second connection portion 61b is located higher than the upper surface of the first wall portion 35a. The upper surface 61c of the collection portion 61 is a horizontal, flat surface. This collection portion 61 can also have the same effects as the collection portion 33 of the first embodiment.

[0080] Next, a hair catcher 65 according to a fifth embodiment will be described with reference to FIG. FIG. 13 is a perspective view showing a hair catcher according to a fifth embodiment of the present invention.

[0081] The hair catcher 60 of the fourth embodiment described above has been described with reference to an example in which the upper surface 61c of the collecting portion 61 is a horizontal flat surface. However, as in the hair catcher 65 of the fifth embodiment shown in Fig. 13, the upper surface 66c of the collecting portion 66 may be an inclined flat surface.

[0082] The collection portion 66 has a first connection portion 66a connected to the tubular portion 31 and a second connection portion 66b connected to the water retention portion 35. The upper end 66a1 of the first connection portion 66a is located at a height equal to or higher than the upper end 66b1 of the second connection portion 66b. In this example, the upper end 66b1 of the second connection portion 66b is located higher than the upper surface of the first wall portion 35a of the water retention portion 35. The upper end 66a1 of the first connection portion 66a is located higher than the upper end 66b1 of the second connection portion 66b. The upper surface 66c of the collection portion 66 is inclined upward from the upper end 66b1 of the second connection portion 66b toward the upper end 66a1 of the first connection portion 66a. This collection portion 66 can also achieve the same effects as the collection portion 33 according to the first embodiment.

[0083] Next, a hair catcher 70 according to a sixth embodiment will be described with reference to FIGS. FIG. 14 is a perspective view showing a hair catcher according to a sixth embodiment of the present invention. FIG. 15 is a cross-sectional view of the hair catcher when placed inside the drain.

[0084] In the first embodiment described above, an example was given in which water retention portion 35 is formed in a concave shape by first wall portion 35a, bottom surface portion 35b, and second wall portion 35c. However, as in a hair catcher 70 according to a sixth embodiment shown in Figures 14 and 15, water retention portion 73 may have wall portion 73a connected to collection portion 71 and bottom surface portion 73b extending radially outward from wall portion 73a.

[0085] That is, water retention portion 73 may be formed with wall portion 73a and bottom surface portion 73b to have an L-shaped cross section. In other words, water retention portion 73 is open upward and radially outward.

[0086] The collection portion 71 has a first connection portion 71a that connects to the tubular portion 31 and a second connection portion 71b that connects to the water retention portion 73. An upper end 71a1 of the first connection portion 71a is located at a height equal to or higher than an upper end 71b1 of the second connection portion 71b. In this example, the upper end 71a1 of the first connection portion 71a is connected to the upper surface of the tubular portion 31. An upper end 71b1 of the second connection portion 71b is connected to the upper surface of the wall portion 73a of the water retention portion 73. An upper surface 71c of the collection portion 71 is a curved surface that is recessed downward.

[0087] 15, when hair catcher 70 is disposed within drainage section 11a, a concave groove is formed by wall section 73a and bottom section 73b of water retention section 73 and inner surface 75 of drainage section 11a or drainage fitting 15. In other words, hair catcher 70 uses drainage section 11a or inner surface 75 of drainage fitting 15 in place of second wall section 35c that constitutes water retention section 35 of hair catcher 30 according to the first embodiment.

[0088] This type of water retention portion 73 can also have the same effects as the water retention portion 35 of the first embodiment. In the hair catcher 70, the water retention portion 73 can be placed closer to the drainage portion 11a or the inner surface 75 of the drainage fitting 15, so the radial length of the collection portion 71 and the space S can be made as large as possible. This allows the hair catcher 70 to improve its performance in capturing and draining foreign matter such as hair. In addition, the water retention portion 73 is open on the radially outer side, making it easier to clean.

[0089] Embodiments may include the following features. (Configuration 1) A hair catcher that is detachably attached to a plug shaft of a drain plug placed in a drain portion of a washbasin, a cylindrical portion through which the plug shaft can be inserted; a plurality of collection portions extending radially outward from the cylindrical portion and spaced apart in a circumferential direction; a water retention portion located radially outward of the collection portion and extending in a circumferential direction; A hair catcher comprising: (Configuration 2) The water retention section is a first wall portion connected to the collection portion; a bottom surface portion extending radially outward from the first wall portion; a second wall portion located radially outward of the first wall portion and extending upward from the bottom surface portion; and 2. The hair catcher according to claim 1, wherein the height dimension of the second wall portion is greater than the height dimension of the first wall portion. (Configuration 3) The water retention section is a wall portion connected to the collection portion; a bottom surface portion extending radially outward from the wall portion; 2. The hair catcher according to claim 1, comprising: (Configuration 4) The collection unit is a first connection portion connected to the cylindrical portion; A second connection portion connected to the water retention portion; and 4. The hair catcher according to any one of configurations 1 to 3, wherein the upper end of the first connecting portion is positioned at a height equal to or higher than the upper end of the second connecting portion. (Configuration 5) 5. The hair catcher according to claim 4, wherein the upper surface of the collecting portion is inclined upward from the upper end of the second connecting portion to the upper end of the first connecting portion. (Configuration 6) 6. The hair catcher according to any one of configurations 1 to 5, wherein the tubular portion extends downward beyond the water retention portion. (Configuration 7) a washbasin having a drainage section; a hair catcher disposed inside the drainage section; Equipped with The hair catcher is A cylindrical portion and a plurality of collection portions extending radially outward from the cylindrical portion and spaced apart in a circumferential direction; a water retention portion located radially outward of the collection portion and extending in a circumferential direction; A drainage unit comprising:

[0090] The above describes embodiments of the present invention. However, the present invention is not limited to these descriptions. Design modifications made by a person skilled in the art to the above-described embodiments are also within the scope of the present invention as long as they incorporate the features of the present invention. For example, the shape, dimensions, materials, and arrangement of each element of the hair catcher and drainage unit are not limited to those exemplified and can be modified as appropriate. Furthermore, the elements of the above-described embodiments can be combined to the extent technically possible, and such combinations are also within the scope of the present invention as long as they incorporate the features of the present invention. [Explanation of symbols]

[0091] 1 Drainage unit 10 Washbasin 11 Bowl section 11a Drainage section 11b Overflow channel 11b1 opening 11b2 Communication port 12 First mounting part 13 Second mounting part 15 Drain fittings 20 drain plug 21 Lid 23 Stopper shaft 30 Hair Catcher 31 Cylinder part 31a Rib 32 Part 1 33 Collection section 33a First connection part 33a1 top end 33b Second connection part 33b1 Top 33c top surface 35 Water Retention Section 35a 1st wall section 35b Bottom part 35c 2nd wall section 37 Part 2 38 Collection section 39 Annular section 50, 55, 60, 65, 70 Hair Catcher 51, 56, 61, 66, 71 Collection section 51a, 56a, 61a, 66a, 71a First connection part 51a1, 56a1, 61a1, 66a1, 71a1 Top 51b, 56b, 61b, 66b, 71b Second connection part 51b1, 56b1, 61b1, 66b1, 71b1 Top 51c, 56c, 61c, 66c, 71c top 73 Water Retention Department 73a Wall 73b Bottom part 75 Inner S space W Yusui

Claims

1. A hair catcher that is detachably attached to a plug shaft of a drain plug placed in a drain portion of a washbasin, a cylindrical portion through which the plug shaft can be inserted; a plurality of collection portions extending radially outward from the cylindrical portion and spaced apart in a circumferential direction; a water retention portion located radially outward of the collection portion and extending in a circumferential direction; A hair catcher comprising:

2. The water retention section is a first wall portion connected to the collection portion; a bottom surface portion extending radially outward from the first wall portion; a second wall portion located radially outward of the first wall portion and extending upward from the bottom surface portion; and 2. The hair catcher according to claim 1, wherein the height dimension of the second wall portion is greater than the height dimension of the first wall portion.

3. The water retention section is a wall portion connected to the collection portion; a bottom surface portion extending radially outward from the wall portion; 2. The hair catcher of claim 1, further comprising:

4. The collection unit is a first connection portion connected to the cylindrical portion; A second connection portion connected to the water retention portion; and 2. The hair catcher according to claim 1, wherein an upper end of the first connecting portion is positioned at a height equal to or higher than an upper end of the second connecting portion.

5. 5. The hair catcher according to claim 4, wherein the upper surface of the collecting portion is inclined upward from the upper end of the second connecting portion to the upper end of the first connecting portion.

6. 6. The hair catcher according to claim 1, wherein the cylindrical portion extends downward beyond the water retention portion.

7. a washbasin having a drainage section; a hair catcher disposed inside the drainage section; Equipped with The hair catcher is A cylindrical portion and a plurality of collection portions extending radially outward from the cylindrical portion and spaced apart in a circumferential direction; a water retention portion located radially outward of the collection portion and extending in a circumferential direction; A drainage unit comprising:

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