JP5901214B2 - Contaminant trap - Google Patents

Description

  The present invention relates to a contaminant catcher that is attached to a drain outlet and captures contaminants from wastewater.

  Generally, a hair catcher that captures contaminants from the drainage by a trapping net is attached to a drain outlet such as a bathroom or a washstand. For example, Patent Literature 1 discloses a hair catcher that is configured by an eye plate having a large number of drain holes and a protrusion provided at the center of the eye plate.

  However, contaminants such as hair trapped in the trapping net are likely to stick to the trapping net and are difficult to remove during cleaning.

JP 2005-146542 A

  This invention considers the fact which concerns, and makes it a subject to provide the contaminant capture tool which becomes easy to remove contaminants, such as the captured hair.

According to the first aspect of the present invention, the trap is disposed at the drain outlet and allows the drainage to pass through the plurality of formed water passage holes and captures contaminants in the drainage. is formed in part, the pore walls topped with a lower wall inclined upper wall and lower toward the water flow hole is inclined toward the water flow hole so as to narrow so that the narrow , it has a, which is the contaminant trapping device, wherein the lower end of the upper wall surface is matched with the upper end of the lower wall to form the water flow hole.

  In the invention according to claim 1, the upper end surface of the hole wall is made narrower by narrowing the upper part of the hole wall formed in the capturing part by the water passage hole than when the upper part of the hole wall is not made narrower. Can be reduced. Thereby, since the area which the upper end surface of a hole wall contacts with contaminants, such as hair, can be made small, it becomes difficult for a contaminant to stick to the capture | acquisition part upper surface. This facilitates removal of the hair from the capturing part when cleaning the contaminant capturing tool.

In addition, since the upper wall surface of the hole wall is inclined toward the water passage hole and there is no step surface, it can flow down without leaving drainage. Thereby, generation | occurrence | production of mold | fungi etc. in a hole wall upper part can be prevented.
And by making the lower part of a hole wall narrow, the area of the lower end surface of a hole wall can be made small compared with the case where the lower part of a hole wall is not made narrow. As a result, it is possible to reduce the waste water remaining on the lower part of the hole wall, and to prevent mold from being generated in the lower part of the hole wall due to the remaining water.
In addition, since the lower wall surface of the hole wall is inclined toward the water passage hole and there is no step surface, it is possible to reduce the waste water remaining attached to the lower part of the hole wall.
Furthermore, by forming the water passage hole by matching the lower end portion of the upper wall surface and the upper end portion of the lower wall surface, the surface tension of the drainage water that has entered the water passage hole is further reduced, and the water permeability is further improved. Can do.

In the invention according to claim 2 , the ridgeline is formed by matching the tops of the adjacent upper wall surfaces.

In the invention according to claim 2 , since the ridgeline is formed by matching the tops of the adjacent upper wall surfaces, the area of the upper end surface of the hole wall can be further reduced, and a high draining effect can be expected. .

According to a third aspect of the present invention, the ridge line forms a polygonal shape in plan view.

In the invention according to claim 3 , the upper surface of the capturing part can be constituted only by the ridgeline.

According to a fourth aspect of the present invention, the overall shape drawn by the ridgeline is a honeycomb shape.

In the invention according to claim 4 , the water passage holes can be densely arranged by making the entire shape drawn by the ridge line into a honeycomb shape.

  Since the present invention is configured as described above, contaminants such as captured hair can be easily removed.

It is a sectional side view which shows the installation condition of the hair catcher which concerns on embodiment of this invention. It is a perspective view which shows the hair catcher which concerns on embodiment of this invention. It is a top view which shows the hair catcher which concerns on embodiment of this invention. It is the top view and sectional drawing which show the hole wall which concerns on embodiment of this invention. It is a sectional view showing a modification of the pore walls of the implementation forms. It is a top view which shows the modification of the hole wall which concerns on embodiment of this invention. It is a top view which shows the modification of the hole wall which concerns on embodiment of this invention. It is a sectional view showing a modification of the pore walls of the implementation forms.

  Embodiments of the present invention will be described with reference to the drawings. First, the contaminant trapping tool according to the embodiment of the present invention will be described.

  In the embodiment of the present invention, as shown in the side sectional view of FIG. 1, an example in which a hair catcher 16 as a contaminant trapping device of the present invention is attached to a drainage basin 14 provided in a washing place 12 of a bathroom 10 will be described. To do.

  The bathroom 10 is constituted by a bathtub 18 and a washing place 12 provided next to the bathtub 18 and provided with a shower, a hot water tap and the like (not shown). The drainage basin 14 is provided at an end of the floor surface 20 constituting the washing place 12 on the bathtub 18 side.

  The substantially rectangular opening 22 formed on the ceiling surface of the drainage basin 14 in a plan view is closed by a substantially rectangular plate-shaped cover 24 in a plan view. The cover 24 is detachably mounted on step portions 26 formed at the four corners of the drainage basin 14. A gap 32 is formed between the side surface 28 of the cover 24 and the inner wall surface 30 of the drainage basin 14, and the drainage flowing on the floor surface 20 flows into the drainage basin 14 from this gap 32 (arrow 34). ).

  A drain trap 36 is attached to the drain 14. The drain trap 36 includes a trap body 38, a hollow fastening flange 40, and a sealing cylinder 42.

  The trap body 38 includes a substantially circular drain port 44 formed in an upper portion in plan view, and a connection port 46 and a discharge port 48 that are provided on the left and right sides of the trap body 38 and communicate with the drain port 44. The drain port 44 is formed so as to be surrounded by the tip end portion of the flange portion 50 provided at the upper end portion of the trap body 38 and extending substantially horizontally toward the center of the drain port 44. The connection port 46 is connected to a waterproof pan (not shown) of the bathtub 18 through a connection pipe (not shown). The discharge port 48 is connected to a sewer pipe (not shown) through a drain pipe (not shown).

  The sealing cylinder 42 is arranged so that the lower end surface S is located below the sealing surface R and has a gap with the bottom surface 56 of the trap body 38 in a state where the sealing cylinder 42 is inserted into the drain port 44. ing. The sealing surface R is formed so as to be surrounded by an upper end surface of a cylindrical side wall 58 erected on the bottom surface 56.

  Therefore, the wastewater that has flowed into the sealing cylinder 42 from the drainage basin 14 is discharged to the discharge port 48 through the region V surrounded by the side wall 58, and flows into the connection port 46 from the connection pipe connected to the waterproof pan of the bathtub 18. The discharged wastewater is discharged to the discharge port 48 through the region V.

  A flange portion 54 is provided at the lower end portion of the drainage basin 14 and projects substantially horizontally toward the center of the opening 52 formed on the bottom surface of the drainage basin 14. Then, the packing 60 attached to the tip of the flange portion 54 is sandwiched between the flange portion 50 and the flange portion 54, and the tightening flange 40 is screwed into the flange portion 50, so that the drain trap 14 is drained. 36 is fixed.

  The sealing tube 42 is inserted into the hollow portion 62 of the tightening flange 40, and a flange portion 64 that projects outward from the upper end portion of the sealing tube 42 is placed on the flange portion 66 that projects from the lower end portion of the tightening flange 40 to the center of the hollow portion 62. In the mounted state, it is fixed to the fastening flange 40.

  As shown in FIG. 1, the hair catcher 16 is attached to the fastening flange 40. As shown in the perspective view of FIG. 2 and the plan view of FIG. 3, the hair catcher 16 is integrally formed of resin, and includes a capturing part 68, a collar part 70, a swirl flow path 72, an inflow path 74, and a water guide An inclined surface 76 is provided.

  The capturing portion 68 is formed in a substantially hemispherical concave shape protruding downward, and has a curved upper surface 80 and a lower surface 126. Further, the capturing unit 68 is disposed in the drain outlet 44. A plurality of water passage holes 78 having a circular hole shape are formed in substantially the entire area of the capturing portion 68. The water passage hole 78 is formed so as to penetrate the trapping portion 68 substantially vertically, so that when drainage mixed with hair as a contaminant flows into the upper surface 80 of the trapping portion 68, Is passed through the water passage 78 and the hair remains on the upper surface 80 and is captured.

  The flange 70 projects in a disk shape substantially horizontally from the outer edge of the upper end of the capturing part 68, and the outer peripheral part 82 is fixed to the inner wall of the hollow part 62 of the fastening flange 40. That is, the collar part 70 is attached to the drain outlet 44 via the fastening flange 40.

  As shown in FIG. 2, the swirling flow path 72 is an annular flow path formed in a substantially horizontal manner on the flange portion 70 along the outer edge of the upper end portion of the capturing portion 68 in a plan view. The swirl flow path 72 is formed by a step portion 84 having an arcuate (substantially ¼ circle) cross section in which the outer side (outer peripheral portion 82 side) is higher than the inner side (capture portion 68 center side).

  Four inflow paths 74 are formed on the flange 70 along the tangential direction of the swirl flow path 72. The inflow passages 74 are arranged at equal intervals with respect to the circumferential direction of the swirling flow path 72, and are inclined upward from the swirling flow path 72 toward the outer peripheral portion 82. Further, the inflow channel 74 is formed by a stepped portion 86 having a circular cross section (substantially ¼ circle) whose right side is higher than the left side in a side view. As a result, the inflow channel 74 allows the drainage to flow from the outer peripheral portion 82 to the swirl channel 72.

The upper edge of the stepped portion 84 and the upper edge of the stepped portion 86 coincide at a point P ₁ where the swirling flow path 72 and the inflow path 74 meet, and the circumferential direction half of the swirling flow path 72 from this point P _1. gradually smooth lower stepped portion 84 upper edge height toward clockwise, in swirl channel 72 and inflow channel 74 and the next merge points P _2, on the stepped portion 84 edge and the stepped portion 86 The bottom edge matches.

As shown in FIG. 3, the water guide inclined surface 76 is an inclined surface formed on the upper surface of the flange 70 by being surrounded by _three sides Q ₁ , Q ₂ , and Q ₃ . Side _{Q 1} is made from the stepped portion 86 lower edge of the inlet passage 74 from the outer peripheral edge of the outer peripheral portion 82 to the point _{P 2,} the side _{Q 2} are the inlet channel 74 from the outer peripheral edge of the outer peripheral portion 82 to the point _{P 1} and the stepped portion 86 upper edge, consists of the stepped portion 84 upper edge to point P ₂ to connect with the stepped portion 86 upper edge, side Q ₃ are other flows from one stepped portion 86 upper edge of the inlet channel 74 of the adjacent It consists of the outer periphery of the outer peripheral part 82 which becomes a downward gradient to the lower edge of the step part 86 of the path 74.

  With such a shape, the water guide inclined surface 76 connects the upper edge of the step portion 86 of the adjacent one inflow passage 74 and the lower edge of the step portion 86 of the other inflow passage 74 and inclines toward the inflow passage 74. Then, the waste water is introduced to the inflow channel 74.

Further, the inclination in the vertical direction of the water guide inclined surface 76 (radial direction in plan view of the outer edge of the upper end portion of the capturing portion 68) is the horizontal direction of the water guide inclined surface 76 (circumferential direction in plan view of the outer edge of the upper end portion of the trapping portion 68). It is smaller than the slope. That is, the water guide inclined surface 76 is inclined toward the swirl flow path 72 smaller than the inclination gradient toward the inflow path 74. Further, the height of the point P ₃ located on the outer peripheral edge of the outer peripheral part 82 on the extension line passing through the point P _{1 of} the radius when the upper end part outer edge of the capturing part 68 is viewed in plan, and the fastening flange located around the hair catcher 16 The height of the upper surface of 40 (hereinafter, referred to as “the bottom surface 88 of the drainage basin 14”) is the same.

  Thereby, the waste water flowing from the bottom surface 88 of the drainage basin 14 to the water guide inclined surface 76 is introduced to the inflow channel 74. A drainage hole 90 is formed in the water guide inclined surface 76, and the drainage overflowed without being able to flow into the capturing portion 68 is discharged from the drainage hole 90.

  4 is an enlarged plan view of the water passage hole 78, and a lower side of FIG. 4 is an AA cross-sectional view of the enlarged plan view drawn on the upper side of FIG. Yes. As shown in FIG. 4, a hole wall 130 is formed in the capturing portion 68 by a water passage hole 78. Further, a tapered portion 92 as a first recess is formed around the water passage hole 78 on the upper surface of the curved capturing portion 68. The peripheral wall of the tapered portion 92 as the upper wall surface of the hole wall 130 is inclined downward toward the center of the water passage hole 78. Further, a tapered portion 94 as a second recess is formed around the water passage hole 78 on the lower surface of the curved capturing portion 68. The peripheral wall of the tapered portion 94 as the lower wall surface of the hole wall 130 is inclined upward toward the center of the water passage hole 78. That is, the cross-sectional shape of the hole wall 130 formed in the capturing part 68 by the water flow hole 78 is such that the upper part of the hole wall 130 is narrower (wall thickness is thinner) than the central part in the vertical direction. The lower part is narrower (wall thickness is thinner) than the central part in the vertical direction.

  The peripheral wall top portions (upper end portions) of the adjacent tapered portions 92 coincide with each other to form a ridge line 96, and the peripheral wall top portions (lower end portions) of the adjacent tapered portions 94 coincide with each other to form a ridge line 98. The ridgeline 96 forms a regular hexagon as a polygon in plan view, and the overall shape drawn by the ridgeline 96 is a honeycomb shape in plan view. The ridgeline 98 forms a regular hexagon as a polygon when viewed from the back, and the overall shape drawn by the ridgeline 98 is a honeycomb when viewed from the back.

  The lower end portion of the peripheral wall of the tapered portion 92 and the upper end portion of the peripheral wall of the tapered portion 94 are matched to form a rhombus-shaped hole wall 130 cross section, and a water passage hole 78 is formed by the matched inner edge portion 100. ing.

  Next, the operation and effect of the contaminant trapping tool according to the embodiment of the present invention will be described.

  As shown in FIG. 1, the waste water that flows on the floor surface 20 of the washing place 12 and flows into the drainage basin 14 from the gap 32 first flows from the bottom surface 88 of the drainage basin 14 toward the outer peripheral portion 82 of the heel portion 70. . This waste water is mixed with hair as a contaminant.

As shown in FIG. 3, out of the drainage flowing toward the outer peripheral portion 82 of the collar portion 70, the drainage toward the tip of the inflow channel 74 is directly led to the inflow channel 74 (arrow 106), and is pointed in a side view. right drainage towards the outer peripheral portion 82 of the P ₃ is water guide into the inflow passage 74 after flowing over the water guide inclined surface 76 (arrow 108), the drainage towards the outer peripheral portion 82 of the left side of the point P ₃ when viewed from the side is Then, after detouring to the left and right along the side surface 102 (see FIG. 2) of the outer peripheral portion 82 that cuts upward from the bottom surface 88 (arrow 110), water is introduced from the tip of the inflow channel 74 to the inflow channel 74 (arrow 106). ). Note that when flows toward the outer peripheral portion 82 of the flange portion 70 drainage of a large amount, the drainage toward the left side of the outer peripheral portion 82 of the point P ₃ when viewed from the side is on the water guide inclined surface 76 rides from the side 102 After flowing in, the water is led to the inflow path 74. In this way, most of the wastewater that has flowed into the drainage basin 14 is collected in the inflow path 74 by the water guide inclined surface 76.

  Next, the waste water guided to the inflow channel 74 flows into the swirl channel 72 and swirls the swirl channel 72 (arrow 104).

  Next, the waste water that swirls in the swirling flow path 72 is swirled into the capturing unit 68 while being accompanied by hair. Then, the waste water dropped into the capturing part 68 flows into the upper surface 80 of the capturing part 68 and passes through the water passage holes 78, and the hair remains on the upper surface 80 and is captured in a state of being gathered in a ring shape or the like. The Further, the waste water flows out of the water passage hole 78 without being retained in the capturing part 68.

  Therefore, by dropping the waste water that has caused the swirling flow into the catching portion 68, the waste water can be caused to flow into the upper surface 80 of the catching portion 68 at a small inflow angle (an angle in the inflow direction of the drainage with respect to the horizontal plane). . As a result, the hair is gathered into an annular shape or the like in a state of falling down and is captured by the upper surface 80 of the capturing unit 68. In other words, the captured hair does not pierce the water passage hole 78 of the capturing portion 68 in a standing state, and is difficult to get entangled with the water passage hole 78. Thereby, when the hair catcher 16 is cleaned, the hair is easily removed from the capturing portion 68.

  Further, since the drainage is caused to flow from the inflow path 74 to the swirl flow path 72, a one-way swirl flow is generated in the swirl flow path 72. Can be made. Moreover, since most of the waste water flowing into the hair catcher 16 is collected in the inflow path 74 by the water guide inclined surface 76, even when the flow rate of the waste water flowing into the hair catcher 16 is smaller, the swirling flow can be efficiently generated. .

  Moreover, since the water guide inclined surface 76 is inclined toward the swirl flow path 72 smaller than the inclination gradient toward the inflow channel 74, the water guide inclined surface 76 is more than the drainage flowing from the water guide inclined surface 76 into the swirl flow path 72. The ratio of the wastewater flowing into the inflow channel 74 can be increased. As a result, a swirling flow of drainage can be effectively generated in the swirling flow path 72.

The height of the point P ₃ of the flange portion 70, so has the same as the height of the bottom surface 88 of the catch basin 14, the side surface 102 of the outer peripheral portion 82 of the flange portion 70, a number of waste water flowing to the hair catcher 16 Therefore, the swirling flow path 72 can effectively generate a swirling flow of drainage.

  Further, since the drainage flows out from the water passage hole 78 without being retained in the catching portion 68, the diameter of the water passage hole 78 does not have to be a size capable of retaining water. That is, since it is not necessary to reduce the hole diameter of the water passage hole 78, the hole diameter of the water passage hole 78 can be increased to ensure high water permeability.

  Further, by forming a tapered portion 92 as a first recess around the water passage hole 78 on the upper surface of the capturing portion 68 and narrowing the upper portion of the hole wall 130, the tapered portion 92 is not formed (hole wall). The area of the upper end surface of the hole wall 130 can be reduced compared with the case where the upper part of 130 is not narrowed. As a result, the area of contact between the upper end surface of the hole wall 130 and the hair as a contaminant can be reduced, so that the captured hair is less likely to stick to the upper surface 80 of the capturing portion 68. Thereby, when the hair catcher 16 is cleaned, the hair is easily removed from the capturing portion 68.

  Further, by forming the tapered portion 92 as the first recess around the water passage hole 78 on the upper surface of the trapping portion 68, there is no step surface in the first recess. It can be washed away. Thereby, generation | occurrence | production of mold | fungi etc. in the hole wall 130 upper part can be prevented.

  In particular, in the embodiment of the present invention, the peripheral wall tops (upper ends) of the adjacent tapered portions 92 coincide with each other to form the ridge line 96, so that the area of the upper end surface of the hole wall 130 can be further reduced. Moreover, a high draining effect can be expected.

  Further, by forming a tapered portion 92 as a first recess around the water passage hole 78 on the upper surface of the trapping portion 68, the inner wall surface of the water passage hole 78 is composed of only an inclined surface and a vertical surface or an inclined surface. can do. That is, the area of the vertical surface that forms the water passage hole 78 can be reduced or eliminated as compared with the water passage hole 78 in which the tapered portion 92 is not formed. As a result, the surface tension of the drainage water that has entered the water passage hole 78 can be reduced to improve water permeability, and the waste water remains in the water passage hole 78 after the waste water is discharged from the catching portion 68. Can be prevented.

  Further, by forming a tapered portion 94 as a second recessed portion around the water passage hole 78 on the lower surface of the capturing portion 68 and narrowing the lower portion of the hole wall 130, the tapered portion 94 is not formed (hole wall). The area of the lower end surface of the hole wall 130 can be reduced as compared with the case where the lower part of 130 is not narrowed. As a result, it is possible to reduce the amount of drainage remaining on the lower portion of the hole wall 130 and prevent mold from being generated in the lower portion of the hole wall 130 due to the remaining water. In addition, by forming the tapered portion 94 as the second recess, since the second recess has no step surface, it is possible to reduce drainage remaining on the lower portion of the hole wall 130.

  In particular, in the embodiment of the present invention, the peripheral wall tops (lower end portions) of the adjacent tapered portions 94 coincide with each other to form the ridgeline 98, so that the area of the lower end surface of the hole wall 130 can be further reduced. Further, since the lower surface 126 of the trapping portion 68 forms a curved surface protruding downward, the remaining water is collected near the center of the trapping portion 68 along the ridgeline 98, and the water droplets are enlarged and dropped. Therefore, it is possible to further reduce the drainage remaining on the lower surface 126 of the capturing portion 68.

  Further, by forming a tapered portion 94 as a second recess around the water passage hole 78 on the lower surface of the catching portion 68, the inner wall surface of the water passage hole 78 is composed of only an inclined surface and a vertical surface or an inclined surface. can do. That is, the area of the vertical surface that forms the water passage hole 78 can be reduced or eliminated as compared with the water passage hole 78 in which the tapered portion 94 is not formed. As a result, the surface tension of the drainage water that has entered the water passage hole 78 can be reduced to improve water permeability, and the waste water remains in the water passage hole 78 after the waste water is discharged from the catching portion 68. Can be prevented.

  In particular, in the embodiment of the present invention, the lower end portion of the peripheral wall of the tapered portion 92 and the upper end portion of the peripheral wall of the tapered portion 94 coincide with each other to form a rhombus-shaped hole wall 130 cross section. The surface tension of the drainage can be further reduced to further improve the water permeability.

  The embodiment of the present invention has been described above.

  In addition, although the example which provided the hair catcher 16 in the drain port 44 provided in the bathroom 10 was shown in embodiment of this invention, you may provide in the drain port of another use. For example, you may provide the hair catcher 16 in the drain provided in the washstand and the kitchen sink.

  Moreover, in embodiment of this invention, although the example which captures hair from waste_water | drain with the hair catcher 16 was shown, contaminants other than the hair mixed in waste_water | drain by the he catcher 16 of embodiment of this invention are drained from waste water. Can be captured. Contaminants other than hair can also be captured in a state in which the contaminants are put together by the swirling flow of the waste water. In particular, if it is a thread-like contaminant, it can be expected to be collected into a ring shape.

  Moreover, the hair catcher 16 of embodiment of this invention is applicable also to the waste liquid which consists of liquids other than water. That is, the hair catcher 16 is attached to the waste liquid port, and the contaminants can be captured from the waste liquid discharged to the waste liquid port.

  Further, in the embodiment of the present invention, the example in which the inflow path 74 is formed along the tangential direction of the swirl flow path 72 is shown. However, the inflow path 74 is unidirectional (left turn or right turn) in the swirl flow path 72. It is only necessary that the drainage is introduced from the direction of generating the swirl flow. That is, the inflow channel 74 does not have to be arranged along the normal to the swirl channel 72 in plan view. If the inflow path 74 is formed along the tangential direction of the swirl flow path 72, the drainage can smoothly enter the swirl flow path 72 from the inflow path 74, and it goes over the swirl flow path 72 and goes directly to the capturing unit 68. Since drainage is reduced, a swirl flow of drainage can be effectively generated in the swirl flow path 72. The inflow path 74 may be arranged so that the drainage turns left in the turning flow path 72 or may turn right. In addition, any number of inflow channels 74 may be formed on the flange 70.

In the embodiments of the present invention, the height of the point P ₃ of the flange portion 70, an example is shown in which the same as the height of the bottom surface 88 of the catch basin 14, a step portion positioned at the front end portion of the inlet channel 74 The height of the upper edge of 86 and the height of the bottom surface 88 of the drainage basin 14 may be the same.

In the embodiments of the present invention, an example was gradually lowered toward the circumferential direction and a half clockwise stepped portion 84 upper edge height of the swirl channel 72 from the point P _1, the point from the point P ₁ P _A partition wall may be provided between the swirl flow path 72 and the water guide inclined surface 76 along the side Q _{2 up} to ₂ .

  Further, in the embodiment of the present invention, an example in which a plurality of water passage holes 78 are formed in substantially the entire area of the capturing portion 68 is shown, but a plurality of water passage holes 78 may be formed in a part of the capturing portion 68. . For example, a plurality of water passage holes 78 may be formed only in the vicinity of the center portion of the capturing portion 68.

  Further, in the embodiment of the present invention, an example in which the hole shape of the water passage hole 78 is circular is shown, but the hole shape of the water passage hole 78 may be any shape. It is preferable that the hole shape of the water flow hole 78 is a circular shape with high water flow. Moreover, the hole diameter of the water flow hole 78 should just be below the largest magnitude | size which can suppress the outflow of the contaminant used as a capture | acquisition object. It is preferable to make the diameter of the water passage hole 78 as large as possible because high water permeability can be obtained.

Also, around the catching捉部68 the upper surface of the water passing holes 78, the example of forming the tapered portion 92 of the first recess, if reduce the area of the upper end surface of the hole wall 130, the hole wall 130 top Any shape may be used. That is, in the cross-sectional shape of the hole wall 130, the upper part of the hole wall 130 only needs to be narrower (wall thickness is thinner) than the central part in the vertical direction. For example, as shown in the cross-sectional view of FIG. 5A, the tapered portion 112 may be formed around the water passage hole 78 on the upper surface of the capturing portion 68 without forming a ridge line. As shown in the sectional view of (b), an L-shaped step 114 may be formed around the water passage hole 78 on the upper surface of the capturing portion 68.

Also, around the catching捉部68 the lower surface of the water passing holes 78, the example of forming the tapered portion 94 of the second recess, if reduce the area of the lower end surface of the hole wall 130, a bottom hole wall 130 Any shape may be used. That is, in the cross-sectional shape of the hole wall 130, the lower part of the hole wall 130 only needs to be narrower (wall thickness is thinner) than the central part in the vertical direction. For example, as shown in the cross-sectional view of FIG. 5C, the tapered portion 116 may be formed around the water passage hole 78 on the lower surface of the capturing portion 68 without forming a ridge line. As shown in the sectional view of (d), an L-shaped stepped portion 118 may be formed around the water passage hole 78 on the lower surface of the capturing portion 68, or as shown in the sectional view of FIG. As described above, the vertical surface 120 may be provided between the lower end portion of the peripheral wall of the tapered portion 92 and the upper end portion of the peripheral wall of the tapered portion 94. If the lower end of the peripheral wall of the taper portion 92 and the upper end of the peripheral wall of the taper portion 94 are made to coincide with each other to form a diamond-shaped hole wall 130 cross section, the surface tension of the drainage water that has entered the water passage hole 78 can be reduced. Can be further improved.

Further, ridge lines 96 and 98 (see FIG. 4), may be sharpened sharp, may be rounded. Moreover, you may make it comprise the ridgelines 96 and 98 by the top part of a circular arc.

  In the embodiment of the present invention, an example in which a regular hexagon is formed in plan view by the ridge line 96 and a regular hexagon is formed in rear view by the ridge line 98 is shown. Alternatively, a polygon other than a regular hexagon may be formed in rear view. For example, as shown in the plan views of FIGS. 6 and 7, the ridgelines 96 and 98 may form a quadrangle or a triangle in a plan view or a back view. By forming a regular hexagonal shape in plan view with the ridgeline 96 and making the overall shape drawn by the ridgeline 96 into a honeycomb shape in plan view, the water passage holes 78 can be densely arranged in plan view.

Further, as shown in the cross-sectional views of FIGS. 8A and 8B , the first recess includes tapered portions 122 and 124 that form a cross section of the hole wall 130 such as a triangle or a trapezoid. That is, the tapered portions 122 and 124 in FIGS. 8A and 8B mean “a first concave portion formed around the water passage hole 78 on the upper surface of the capturing portion 68”. Further, as shown in the cross-sectional views of FIGS. 8C to 8F, the tapered portions 132, 134, 136, and 138 may be formed only on the left and right sides of the hole wall 130. That is, the hole wall 130 in FIGS. 8C and 8D means “a hole wall formed in the capturing portion 68 by the water passage hole 78 and having a narrow upper portion”, and FIGS. 8E and 8F. The perforated wall 130 means “a perforated wall formed in the capturing portion 68 by the water-passing hole 78 and having a narrow lower portion”.

  Further, in the embodiment of the present invention, the example in which the upper part and the lower part of the hole wall 130 formed in the capturing part 68 of the hair catcher 16 that generates the swirl flow is narrowed is shown, but the hair catcher that does not generate the swirl flow The embodiment of the present invention may be applied to the capturing unit. Moreover, you may apply embodiment of this invention to the he catcher which has a flat capture part. That is, the upper and lower portions of the hole wall 130 formed in the flat-shaped capturing portion may be narrowed.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to such embodiment at all, Of course, in the range which does not deviate from the summary of this invention, it can implement in a various aspect.

16 Hair catcher
44 Drain port 68 Trapping part 78 Water passage hole 96 Ridge line 130 Hole wall

Claims (4)

A capturing unit that is disposed at the drainage port and allows the drainage to pass through the plurality of formed water passage holes and captures contaminants in the drainage,
By the water flow holes formed in the capture portion, the lower the top is inclined toward the water flow hole so narrow and sloped toward the water flow hole so that the top wall and bottom is narrower A hole wall with a wall surface ;
I have a,
The contaminant trapping device in which the lower end portion of the upper wall surface and the upper end portion of the lower wall surface are aligned to form the water passage hole . The contaminant trapping device according to claim 1 , wherein ridgelines are formed by matching the top portions of the adjacent upper wall surfaces. The contaminant capturing tool according to claim 2 , wherein the ridge line forms a polygonal shape in plan view. The contaminant trapping device according to claim 3 , wherein the overall shape drawn by the ridge line is a honeycomb shape.

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