JP5348602B2 - Drain trap mounting structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drain trap mounting structure capable of mounting a drain trap and a drain pit without leaving a clearance between them irrespective of the presence of margin provided by taking errors in manufacture and construction into account, preventing dirty objects from being collected, and allowing a user to take care of it simply. <P>SOLUTION: This drain trap mounting structure is provided with the drain pit, a trap main body, and a water sealing cylinder having a cylindrical part having opened top and bottom and inserted into an opening and an annular part extended from an upper end of the cylindrical part onto an outward side. The annular part of the water sealing cylinder is formed on an inclined face where an upper face turns down toward the inward side, and an opening peripheral fringe of a bottom face part of the drain pit has an annular inclined face which has larger grade than grade of the inclined face of the annular part and turns down toward the inward side. The annular part of the water sealing cylinder is put on the whole periphery of the annular inclined face. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to a drain trap mounting structure for a bathroom unit.

  Conventionally, a drain trap 101 installed in a bathroom unit, as shown in FIG. 9, for example, forms a trap body, a mounting flange 106 for installing this trap body in a drain pit of a washing place, and a sealed water The main component is a water seal tube 107 (see, for example, Patent Document 1).

  Among these, the trap main body 102 is molded with a synthetic resin or the like, and has a substantially trapezoidal trap main portion 103 that is open at the top, a lid portion 104 that is formed of the same material as the trap main portion 103, and a sealed chamber. Three members of the partition wall 105 forming the WR are welded and formed integrally. The lid portion 104 is provided with an internal thread portion 104a in which an internal thread is engraved at the inner end where the lid portion 104 opens.

  On the other hand, the mounting flange 106 includes a male screw portion 106a in which a male screw to be screwed with a female screw of the lid portion 104 of the trap body 102, a flange portion 106b extending outward from the upper end of the male screw portion 106a, and a male screw portion. It has a seal tube hooking part 106c that extends inward from the vicinity of the lower end and is hooked with the seal tube.

  And the sealing cylinder 107 has the cylindrical part 107a by which upper and lower sides were open | released, and the cyclic | annular part 107b extended outward from this cylindrical part 107a upper end.

  In the drain trap 101, a lid 104 of the trap body 102 is disposed under an opening OP provided in the drain pit 111, and a mounting flange 106 is disposed over the opening OP. The drainage pit 111 around the opening OP is clamped via the U-packing 110 by screwing with the female screw 104 and installed.

  On the other hand, the water sealing tube 107 is inserted into the water intake IN that is opened in the lid portion 104 of the trap body 102, and the water sealing tube 107 is inserted into the water sealing tube hooking portion 106c near the lower portion of the mounting flange 106. The annular portion 107b of 107 is hooked through the packing 109 and is detachably attached.

  A stepped portion 111 b is formed around the opening OP of the drain pit 111 so that the flange portion 106 b of the mounting flange 106 does not become higher than the bottom surface portion 111 a of the drain pit 111.

JP 2001-152508 A (FIGS. 1 and 3)

  By the way, a manufacturing error inevitably occurs in the trap body 102 and the mounting flange 106. In order to absorb this error, the internal thread portion 104a of the lid portion 104 of the trap body 102 and the external thread portion 106a of the mounting flange 106 are formed so as to be screwed together with a certain margin (margin and play). Therefore, a construction error may occur. In this case, the central axis of the trap body 102 and the central axis of the mounting flange 106 do not coincide with each other. As a result, the central axis of the mounting flange 106 and the central axis of the opening OP of the drainage pit 111 Neither will match.

  Even when the center axis is displaced in this way, a margin is provided between the outer end of the flange portion 106b and the stepped-down portion 111b of the drainage pit 111 so that the mounting flange 106 fits in a predetermined position. That is, the diameter of the outer end of the flange portion 106b is smaller than the diameter of the stepped portion 111b.

  Then, there is a problem that a gap G is inevitably formed between the outer end of the flange portion 106b and the stepped-down portion 111b, and dirt accumulates here, and cleaning is difficult.

  The present invention has been made in consideration of the above-mentioned circumstances, and even if a margin is taken into consideration for manufacturing errors and construction errors, the drain trap and the drain pit can be attached without a gap, and dirt is not easily collected. Is intended to provide a simple drain trap mounting structure.

In order to solve the above-described problem, the drain trap mounting structure according to the present invention is provided at a position lower than the washing floor to collect water on the washing floor, and a drain pit having an opening formed on the bottom surface. And a trap body that is shaped into a substantially bowl-like shape with the upper end open and that receives water falling from the opening, a fixing means that fixes the trap body to the drain pit, and the top and bottom are released and inserted into the opening. A sealing cylinder having a cylindrical portion and an annular portion extending outward from the upper end of the cylindrical portion, and the annular portion of the sealing cylinder has a downward slope with the upper surface facing inward. The opening peripheral edge of the bottom surface of the drain pit has an annular inclined surface that has a larger gradient than the inclined surface of the annular portion and is inclined downward toward the inward side. The annular portion of the water bottle is entirely on the annular inclined surface. There is placed an annular tip of the sealing water bottle is shall be formed with an intermediate a descending slope between the inclined annular surface of the drainage pit and the inclined surface of the encapsulating water bottle.

The annular portion of the sealing water bottle is preferably not to desired to contact the inclined annular surface of the drainage pit at its outer end.

  And the annular sealing material which closes the clearance gap with the said drain pit watertightly suitably may be attached to the outer-periphery edge part of the said annular part in the said sealing cylinder.

  In addition, the outer diameter of the annular inclined surface formed on the bottom surface portion of the drain pit is preferably larger than the outer diameter of the annular portion in the sealed cylinder and the bottom surface portion of the drain pit. An inner diameter of the annular inclined surface may be formed smaller than an outer diameter of the annular portion in the sealed water cylinder.

  Furthermore, the inner surface of the fixing means is preferably provided with a fixing means side locking means projecting inward, and the fixing means side engagement is provided on the outer surface of the cylindrical portion of the sealed water cylinder. A sealing cylinder side locking means projecting outwardly that can be locked with the locking means is provided, between the front end of the locking means side locking means and the outer surface side of the cylindrical portion in the horizontal direction, and the water sealing cylinder A configuration may be adopted in which a predetermined margin is formed between the front end of the side locking means and the inner surface side of the fixing means.

  According to the drain trap mounting structure according to the present invention, it is possible to mount the drain trap and the drain pit without any gap even if a margin for manufacturing error and construction error is provided. An effect is obtained.

  A first embodiment of a drain trap mounting structure according to the present invention will be described with reference to FIGS. 1 is a plan view of a drain trap mounting structure according to the present embodiment, FIG. 2A is a cross-sectional view taken along the line A-A shown in FIG. 1, and FIG. 2B is a section C in FIG. 3 (a) is a cross-sectional view taken along the line B-B shown in FIG. 1, FIG. 3 (b) is an enlarged view of a portion D in FIG. 1 (a), and FIG. 4 is a diagram showing C shown in FIG. -C sectional drawing and FIG. 5 are the F section enlarged views in FIG.2 (b).

  The drain trap 1 includes a trap body 2, a sealing cylinder 7 for forming sealed water, and a connecting member 6 that connects the trap body 2 and the sealing cylinder 7 as main components. Further, the drain trap 1 includes an attachment member 5.

  The trap body 2 is integrally formed by welding two members, a substantially trapezoidal trap main portion 3 that is molded of a synthetic resin or the like and has an upper opening, and a lid portion 4 that is formed of the same material as the trap main portion 3. Formed. The lid part 4 is provided with an internal thread part 4a in which an internal thread is engraved at the inner end that opens.

  The trap body 2 is formed with a water storage chamber WR having a predetermined height at the center on the lower side, and is connected to an inflow pipe for collecting drainage from the bathtub so as to communicate with the lower portion of the water storage chamber WR. A drainage water intake part 2a is formed.

  Further, the trap body 2 is formed with a trap drain portion 2b so as to communicate with the upper side of the reservoir chamber WR, and connected to a drain pipe for leading the drainage of the drain trap 1 to the outside.

  The opening at the top of the trap body 2 is a water intake IN into which drainage from the washing area flows.

  The connecting member 6 has a short cylindrical male screw portion 6a in which a male screw screwed with a female screw of the lid portion 4 is screwed on the outer periphery, and a flange portion 6b extending substantially horizontally outward from the upper end of the male screw portion 6a.

  On the upper surface of the flange portion 6b, a protrusion 6c that fits into a fitting groove 11c formed on the back surface of the drain pit 11 is provided upright. Further, a plurality of protruding pieces 6d as fixing means side locking means protruding inward are provided on the back surface (inner side surface) of the male screw portion 6a.

  The attachment member 5 is a plate-like member whose substantially center is depressed in a cylindrical shape, and an opening through which the male screw portion of the connecting member 6 can be inserted is formed in the bottom portion 5a. The bottom portion 5a is sandwiched between the upper surface of the lid portion 4 and the lower surface of the flange portion 6b of the connecting member 6 via the U packing 10 by the female screw of the lid portion 4 and the male screw of the connecting member 6 being screwed together. The

  On the other hand, both ends of the top portion 5b of the attachment member 5 are bent upward to form the attachment portion 5c. By attaching the attachment portion 5c to a gantry that supports the floor pan, the entire drain trap 1 is installed on the gantry.

  On the other hand, the drain trap 1 is fixed to the drain pit 11 by screwing the bottom surface portion 11a of the drain pit 11 and the mounting member 5 with bolts 12 as shown in FIG. Therefore, the bottom surface portion 11 a around the bolt hole is formed lower than the surrounding bottom surface portion 11 a, and the head of the bolt 12 is covered with the cap 13.

  In addition, the connection member 6 and the attachment member 5 which concern on this embodiment comprise the fixing means of this invention.

  The sealing cylinder 7 includes a cylindrical cylindrical portion 7a that is opened up and down, and an annular portion 7b that is expanded obliquely upward and outward from the upper end of the cylindrical portion 7a. That is, the annular portion 7b is formed in an inclined surface whose upper surface is inclined downward toward the inner side, and the outer peripheral edge portion 7d is formed in a larger gradient than the previous portion.

  Thus, since the outer peripheral edge portion 7d is formed in a sharp shape and thin, the outer peripheral edge portion 7d is in point contact with the stepped portion 11b (annular inclined surface) on the entire periphery, thereby the outer peripheral edge portion. Since 7d and the annular inclined surface 11b are attached with almost no gap, it is difficult for dirt to collect in the portion where the drainage pit 11 and the sealing cylinder 7 are joined, and the maintenance becomes easy.

  As a more preferable form, it is desirable that the outer peripheral edge 7d has a sharp shape on the upper side. In this case, since the tip of the outer peripheral edge portion 7d makes point contact with the stepped-down portion 11b (annular inclined surface) in the entire periphery, the gap between the outer peripheral edge portion 7d and the annular inclined surface 11b is larger than that in the other case. It becomes smaller, dirt hardly accumulates in the joint portion between the drain pit 11 and the sealing cylinder 7, and the maintenance becomes easier.

  In the vicinity of the base of the outer peripheral edge portion 7d, an O-ring 9 as an annular sealing material is provided so as to close the gap with the drain pit 11 in a watertight manner.

  A plurality of protruding pieces 7c serving as sealing cylinder side locking means protruding outward are provided on the outer surface of the cylindrical portion 7a and can be locked with the protruding pieces 6d of the connecting member 6.

  Between the tip in the horizontal direction of the projecting piece 6d of the connecting member 6 and the outer surface side of the tubular portion 7a of the water sealing cylinder 7, and between the tip of the projecting piece 7c of the water sealing cylinder 7 and the inner surface side of the connecting member 6, Predetermined margins M1 and M2 are formed respectively.

  Thereby, even if the central axis of the trap body 2 is shifted from the central axis of the opening OP provided in the drainage pit 11 due to a product error or construction error, the opening OP provided in the drainage pit 11 is the central axis of the sealing cylinder 7. It can be attached to match the central axis. Therefore, unlike the conventional drain trap, it is not necessary to provide a gap between the drain pit and the mounting flange.

  The drainage pit 11 is formed by stepping down from the washing floor 14, and the bottom surface portion 11a is stepped down by the thickness of the annular portion 7b of the sealed water tube 7 or more in the middle of descending inward. The annular portion 7b of the sealing cylinder 7 is placed on the stepped portion 11b. As a result, the entire circumference of the outer peripheral edge portion 7d and the stepped portion 11b (annular inclined surface) can be surely brought into point contact. And the fitting groove | channel 11c which the protrusion 6c of the connection member 6 fits is formed in the vicinity of the water intake IN at the front-end | tip of the bottom face part 11a.

  The connection between the annular portion 7b of the sealing cylinder 7 and the drainage pit 11 will be described with reference to FIG. As described above, the annular portion 7b is formed in an inclined surface whose upper surface is inclined downward toward the inward side, and the outer peripheral edge portion 7d is formed in a larger gradient than the previous portion.

  On the other hand, the stepped portion 11b of the drainage pit 11 is formed in an annular inclined surface that is inclined downward toward the inward side with a larger gradient than the inclined surface of the outer peripheral edge portion 7d of the annular portion 7b.

  Therefore, the outer peripheral edge portion 7d of the annular portion 7b is in contact with the annular inclined surface over the entire circumference. Thereby, a gap does not occur between the drain pit and the mounting flange as in the conventional drain trap. As described above, since the annular portion 7b of the water sealing cylinder 7 and the drainage pit 11 can be attached without a gap, dirt is unlikely to accumulate and maintenance is easy.

  Further, the outer diameter of the annular inclined surface formed on the bottom surface portion 11 a of the drain pit 11 is formed to be larger than the outer diameter of the annular portion 7 b in the sealed water cylinder 7. Thereby, even if the center axis of the opening OP formed in the drain pit 11 and the center axis of the trap body 2 are deviated due to a manufacturing error or construction error, the annular portion 7b of the sealing cylinder 7 and the drain Since it is possible to attach the pit 11 more securely without gaps, dirt is less likely to accumulate and the care is easy.

  Next, a second embodiment of the drain trap mounting structure according to the present invention will be described with reference to FIGS. 6 is a plan view of the drain trap mounting structure according to the present embodiment, FIG. 7A is a cross-sectional view taken along the line GG shown in FIG. 6, and FIG. 7B is an enlarged view of the I portion in FIG. 8A is a cross-sectional view taken along the line H-H shown in FIG. 6, and FIG. 8B is an enlarged view of a portion J in FIG.

  As shown in the figure, the drain trap mounting structure of the present embodiment is the same as that of the first embodiment in that the lid 4, the mounting member 5, and the connecting member 6 are integrated into a fixing member 15. The other configurations are substantially the same as those of the first embodiment, and the same reference numerals are given and description thereof is omitted. The fixing member 15 is welded and integrated with the trap main portion 3.

  As described above, since the fixing means is composed of one member, the product cost can be reduced, and the attachment process can be shortened.

  Moreover, since the annular portion 7b of the sealing cylinder 7 is formed larger and covers the cap 13 that covers the head of the bolt 12 that fixes the drain trap 1A to the drain pit 11, the design is cleaner.

  The embodiments described above are for illustrative purposes and do not limit the scope of the invention. Accordingly, those skilled in the art can employ embodiments in which each or all of these elements are replaced by equivalents thereof, but these embodiments are also included in the scope of the present invention.

The top view of 1st Embodiment of the drain trap attachment structure which concerns on this invention. (A) is AA sectional drawing shown by FIG. 1, (b) is the D section enlarged view in (a). (A) is BB sectional drawing shown by FIG. 1, (b) is the E section enlarged view in (a). CC sectional drawing shown by FIG. The F section enlarged view in FIG.2 (b). The top view of 2nd Embodiment of the drain trap attachment structure which concerns on this invention. (A) is GG sectional drawing shown by FIG. 6, (b) is the I section enlarged view in (a). (A) is HH sectional drawing shown by FIG. 6, (b) is the J section enlarged view in (a). The figure which shows the conventional drain trap attachment structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,1A Drain trap 2 Trap body 2a Bath drainage water intake part 2b Trap drainage part 3 Trap main part 4 Cover part 4a Female thread part 5 Mounting member 5a Bottom part 5b Top part 5c Mounting part 6 Connecting member 6a Male thread part 6b Flange part 6c Projection 6d Projection piece 7 Sealed cylinder 7a Tubular part 7b Annular part 7c Projection piece 7d Outer peripheral edge part 9 O-ring 10 U packing 11 Drainage pit 11a Bottom face part 11b Stepped part (annular inclined surface)
11c Mating groove 12 Bolt 13 Cap 14 Washing floor 15 Fixing member IN Water intake port M1, M2 Margin OP Opening WR Water storage chamber

Claims (5)

A drainage pit provided at a position lower than the washing floor to collect water on the washing floor, and having an opening formed in the bottom,
A trap body that is shaped into a generally bowl-like shape with an open upper end and receives water falling from the opening;
Fixing means for fixing the trap body to the drain pit;
A sealing cylinder having a cylindrical portion that is opened up and down and inserted into the opening, and an annular portion that extends outward from the upper end of the cylindrical portion;
The annular portion of the sealing cylinder is formed on an inclined surface whose upper surface is inclined downward toward the inward side,
The opening peripheral edge of the bottom surface portion of the drainage pit has an annular inclined surface that becomes a downward gradient toward the inward side with a larger gradient than the inclined surface of the annular portion,
The entire circumference of the annular portion of the sealed water tube is placed on the annular inclined surface ,
The drain trap mounting structure , wherein the tip of the annular portion of the sealing cylinder is formed with an intermediate downward slope between the inclined surface of the sealing cylinder and the annular inclined surface of the drain pit . 2. The drain trap mounting structure according to claim 1, wherein an annular portion of the sealing cylinder abuts on an annular inclined surface of the drain pit at an outer end thereof. The drainage trap according to any one of claims 1 to 2 , wherein an annular sealing material for watertightly closing a gap with the drainage pit is attached to an outer peripheral edge of the annular part in the sealing cylinder. Mounting structure. The outer diameter of the annular inclined surface formed on the bottom surface portion of the drain pit is larger than the outer diameter of the annular portion in the sealed cylinder, and the inner diameter of the annular inclined surface formed on the bottom surface portion of the drain pit is The drain trap mounting structure according to any one of claims 1 to 3 , wherein the drain trap is formed to be smaller than an outer diameter of the annular portion in the sealed cylinder. The inner surface of the fixing means is provided with a fixing means side locking means projecting inward, and the outer surface of the tubular portion of the sealing cylinder can be locked with the fixing means side locking means. A sealing tube side locking means protruding outward is provided,
Predetermined margins are respectively formed between the front end of the fixing means side locking means and the outer surface side of the cylindrical portion in the horizontal direction, and between the front end of the sealing cylinder side locking means and the inner surface side of the fixing means. mounting structure of the drain trap according to any one of claims 1 to 4, characterized in that attached as.

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