Drain socket, drain socket installation method, and toilet device
Patent Information
- Application Number
- JP2024221421
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2025-04-11
Smart Images
Figure 00000000_0000_ABST
Abstract
Description
[Technical field]
[0001] The present disclosure relates to a drainage socket. [Background technology]
[0002] A drain pipe is installed in the toilet room to discharge waste into the sewage system. The drainage distance of this drain pipe (described later) varies from site to site. In the case of wall drainage specifications, the drainage height, etc., changes as the drainage distance, and in the case of floor drainage specifications, the drain center changes as the drainage distance.
[0003] Patent Document 1 discloses a drain socket that can adjust the drain height it can accommodate. This drain socket includes a first socket pipe that is connected to the toilet bowl and a second socket pipe that is connected to the drain pipe. The second socket pipe includes a first adjuster pipe portion that is connected to the first socket pipe and a second adjuster pipe portion that is connected to the drain pipe. This drain socket can adjust the drain height it can accommodate by cutting each adjuster pipe portion according to the drain distance and adjusting their lengths. [Prior art documents] [Patent documents]
[0004] [Patent Document 1] WO 95 / 27833 Summary of the Invention [Problem to be solved by the invention]
[0005] As a result of examining the technology disclosed in Patent Document 1, the inventor of the present application came to the following new realization. In the drain socket of Patent Document 1, the first and second adjuster tube parts are provided on a common second socket tube. Therefore, the closer the lengths of the first and second adjuster tube parts after cutting, the more difficult it becomes to distinguish the first and second adjuster tube parts in appearance. Due to this, a misassembly may occur in which the first adjuster tube part is mistakenly assembled to the drain pipe instead of the second adjuster tube part. In this case, depending on the structure of the internal water channel of the second socket tube, there is a risk that the desired discharge performance cannot be obtained, and therefore improvement in this respect is desired.
[0006] An object of the present disclosure is to provide a drainage socket that is adjustable in terms of the drainage distance it can accommodate and that can prevent incorrect assembly. [Means for solving the problem]
[0007] The drain socket of the present disclosure comprises a first socket pipe having a toilet connection portion connected to a toilet and a first adjuster pipe portion extending diagonally in the fore-and-aft direction toward the downstream side and rear, and a second socket pipe having a pipe receiving portion to which the first adjuster pipe portion is connected, and a second adjuster pipe portion connected to a drain pipe installed in the toilet room. [Brief description of the drawings]
[0008] [Figure 1] 1 is a side cross-sectional view of a toilet apparatus according to a first embodiment. [Diagram 2] FIG. 2 is an enlarged view of FIG. [Diagram 3] FIG. 2 is a side view showing the drain socket of the first embodiment. [Figure 4] FIG. 2 is a side cross-sectional view showing the drain socket of the first embodiment. [Diagram 5] 5 is a cross-sectional view taken along line AA in FIG. 4. [Figure 6] FIG. 2 is an explanatory diagram relating to a first attitude and a second attitude. [Figure 7] FIG. 4 is an explanatory diagram of a drainage distance that can be accommodated by the drainage socket of the first embodiment. [Figure 8]4 is a flowchart showing a method for installing the toilet according to the first embodiment. [Figure 9] 5 is an explanatory view relating to a cutting position of a first adjuster pipe portion in the first embodiment. FIG. [Figure 10] FIG. 4 is an explanatory diagram relating to a required socket length in the first embodiment. [Figure 11] FIG. 4 is an explanatory diagram relating to a center-to-center distance in the first embodiment. [Figure 12] FIG. 4 is an explanatory diagram relating to the insertion depth in the first embodiment. [Figure 13] FIG. 2 is a diagram showing a state in the middle of arrangement of the toilet in the first embodiment. [Figure 14] 11A and 11B are diagrams illustrating a drain socket with a diagonal connection structure and a drain socket with a straight connection structure. [Figure 15] FIG. 6 is an enlarged side cross-sectional view of a toilet apparatus according to a second embodiment. [Figure 16] 13 is an explanatory view relating to a cutting position of a first adjuster pipe portion in the second embodiment. FIG. [Figure 17] FIG. 11 is an explanatory diagram relating to a required socket length in the second embodiment. [Figure 18] FIG. 11 is an explanatory diagram relating to a center-to-center distance in the second embodiment. [Figure 19] FIG. 11 is an explanatory diagram relating to the insertion depth in the second embodiment. [Figure 20] FIG. 11 is a diagram showing a state in the middle of arrangement of the toilet in the second embodiment. [Figure 21] FIG. 11 is a diagram showing a state in the middle of arrangement of the toilet in the third embodiment. [Figure 22] FIG. 13 is a side view showing the drain socket in the fourth embodiment. [Diagram 23] FIG. 11 is a plan cross-sectional view of a toilet apparatus according to a fifth embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0009] The following describes the embodiments. The same components are given the same reference numerals, and duplicated descriptions are omitted. In each drawing, components are omitted, enlarged, or reduced as appropriate for the sake of convenience. The drawings should be viewed according to the orientation of the reference numerals. In this specification, "fixed" and "connected" include cases where the conditions mentioned are directly satisfied by two parties, as well as cases where the conditions are satisfied via other members, unless otherwise specified.
[0010] (First embodiment) See Fig. 1. Below, the positional relationship of each component will be described using three mutually perpendicular directions. These directions are the front-rear direction X, the left-right direction (not shown), and the up-down direction Z. When the toilet bowl is installed in a toilet room, ideally, the front-rear direction X and the left-right direction are horizontal, and the up-down direction Z is vertical. The front-rear direction X and the left-right direction correspond to the front-rear direction, front-rear direction, left-right direction, and right-left direction of a user sitting in a normal position on a toilet seat (not shown) mounted on the toilet bowl.
[0011] A drain pipe 10 is installed in a building. The drain pipe 10 in this embodiment is of wall drainage specification and is installed in the rear wall Wa of the toilet room. The distance La (hereinafter referred to as drainage distance) of the drain pipe 10 in a specific direction Da varies from site to site. In the case of a wall drainage drain pipe 10, in this embodiment, the "drainage distance" refers to the drainage height, and the "specific direction Da" is the vertical direction Z. The "drainage height" refers to the distance in the vertical direction Z from the floor F of the toilet room to the opening center C1 of the upstream end opening 10a of the drain pipe 10. Hereinafter, the direction along the central axis CL1 of the upstream end opening 10a of the drain pipe 10 is referred to as the connection direction Db.
[0012] The toilet device 14 in which the drain socket 12 is used comprises a toilet 16 in addition to the drain socket 12 .
[0013] The toilet bowl 16 of this embodiment is made of ceramic. There are no particular limitations on the material of the toilet bowl 16, and it may be made of, for example, resin, metal, etc. The toilet bowl 16 includes a toilet bowl portion 18 for receiving waste, and a toilet drainage channel 20 connected to the bottom of the toilet bowl portion 18.
[0014] The toilet drainage channel 20 serves as a passageway for waste discharged from the toilet bowl 18. The toilet drainage channel 20 includes a cylindrical connected part 20a provided at the downstream end of the toilet drainage channel 20, and a water seal reservoir 22 capable of storing water seal W. The connected part 20a in this embodiment extends linearly rearward as it approaches the downstream side. The water seal W blocks the flow of gas in the flow direction within the toilet drainage channel 20.
[0015] The toilet device 14 of this embodiment comprises an outer peripheral wall portion 24 provided on the outer peripheral side of the toilet bowl portion 18, and a cavity portion 26 formed inside the outer peripheral wall portion 24. The outer peripheral wall portion 24 of this embodiment is provided on the toilet bowl 16 as a part of the toilet bowl 16. The cavity portion 26 comprises a rear opening 26a that opens the cavity portion 26 rearward, and a lower opening 26b that opens the cavity portion 26 downward. The rear opening 26a and the lower opening 26b open to the outer peripheral wall portion 24. The rear opening 26a is continuous with the lower opening 26b so as to open downward.
[0016] Please refer to Figures 2 to 5. Figure 2 shows the state of the drain socket 12 after installation, and Figures 3 and 4 show the state of the drain socket 12 disassembled before installation.
[0017] The drain socket 12 connects the toilet drainage channel 20 of the toilet 16 to the drain pipe 10. The drain socket 12 includes a first socket pipe 28 connected to the toilet drainage channel 20, and a second socket pipe 30 connected to the drain pipe 10. In this embodiment, each of the socket pipes 28, 30 is made of a hard material. This hard material is, for example, a non-rubber resin, metal, etc. The non-rubber resin here is, for example, polyvinyl chloride, ABS resin, polypropylene, etc.
[0018] A first internal water passage 29 is formed inside the first socket pipe 28, which serves as a passageway for waste discharged from the toilet bowl 16. The first socket pipe 28 includes an upstream pipe section 32 provided on the upstream side of the first socket pipe 28, and a first adjuster pipe section 34 provided on the downstream side of the first socket pipe 28. In addition to these, the first socket pipe 28 of this embodiment includes a bolt fixing section 36 that is fixed to the rear wall section Wa of the toilet room by a bolt B.
[0019] The upstream pipe section 32 extends forward as it approaches the upstream side, and has a generally straight shape. The upstream pipe section 32 in this embodiment extends horizontally as a whole.
[0020] The first socket pipe 28 has a tubular toilet connection part 38 that is connected to the connected part 20a of the toilet drainage channel 20. The toilet connection part 38 is provided at the upstream end of the upstream pipe part 32, i.e., the upstream end of the first socket pipe 28. A part of the first internal water channel 29 is formed inside the toilet connection part 38. The toilet connection part 38 is watertightly connected to the toilet drainage channel 20 via a first seal member 40 with the connected part 20a of the toilet drainage channel 20 inserted inside. The first seal member 40 is an elastic member such as a rubber packing. The first seal member 40 is fixed to the first socket pipe 28 by a pressing member 42.
[0021] The first adjuster pipe 34 extends obliquely with respect to the front-rear direction X toward the downstream side and rearward, and is generally linear. In this embodiment, the first adjuster pipe 34 extends obliquely downward with respect to the front-rear direction X toward the downstream side. The first adjuster pipe 34 extends obliquely so as to move away from the center line Lc along the front-rear direction X passing through the upstream pipe 32 toward the downstream side. After the first adjuster pipe 34 extends obliquely so as to move away from the center line Lc toward the downstream side, it does not extend obliquely (obliquely upward in this embodiment) so as to approach the center line Lc. The length of the first adjuster pipe 34 in the pipe axis direction Dc can be adjusted by cutting it.
[0022] The first socket pipe 28 has a first step 43 extending from the downstream end of the upstream pipe section 32 radially inward of the upstream pipe section 32. The first adjuster pipe section 34 is continuous with the upstream pipe section 32 via the first step 43, and the inlet of its internal water passage opens to the inner surface of the first step 43.
[0023] A second internal water passage 45 for waste to pass through is formed inside the second socket pipe 30. The second socket pipe 30 includes a pipe receiving portion 44 to which the first adjuster pipe portion 34 is connected, and a second adjuster pipe portion 46 to be connected to the drain pipe 10.
[0024] The pipe receiving portion 44 is provided at the upstream end 46b of the second adjuster pipe portion 46. A part of the second internal water passage 45 is formed inside the pipe receiving portion 44. The pipe receiving portion 44 includes a cylindrical peripheral wall portion 48 disposed on the outer circumferential side of the open end 34a of the first adjuster pipe portion 34, and a second step portion 50 against which the first adjuster pipe portion 34 abuts.
[0025] The peripheral wall portion 48 includes an inner portion 48a disposed inside the second adjuster pipe portion 46, and an outer portion 48b disposed outside the second adjuster pipe portion 46. The inner portion 48a extends from an upstream end face 46c of the second adjuster pipe portion 46 toward the downstream end side of the first adjuster pipe portion 34 (diagonally downward and rearward in this embodiment). The outer portion 48b is provided so as to protrude from the outer peripheral surface of the second adjuster pipe portion 46. The second step portion 50 extends from the downstream end portion of the outer portion 48b toward the radially inner side of the first adjuster pipe portion 34.
[0026] The dimension of the outer portion 48b in the tube axis direction Dc of the first adjuster pipe portion 34 is referred to as L1. The dimension of the inner portion 48a in the tube axis direction Dc is referred to as L2. In this case, the dimension L1 of the outer portion 48b is shorter than the dimension L2 of the inner portion 48a. The dimension L1 of the outer portion 48b is equal in size over the entire range in the circumferential direction of the pipe receiving portion 44. The dimension L2 of the inner portion 48a increases as it moves away from the boundary 48c between the inner portion 48a and the outer portion 48b in the circumferential direction. The dimension L1 of the outer portion 48b is shorter than the dimension L2 of the inner portion 48a regardless of its circumferential position.
[0027] The pipe receiving portion 44 has an insertion chamber 52 into which the open end 34a of the first adjuster pipe portion 34 is inserted. The insertion chamber 52 is formed by the peripheral wall portion 48 and the second step portion 50 of the pipe receiving portion 44. The insertion chamber 52 has an insertion opening 54 into which the open end 34a of the first adjuster pipe portion 34 is inserted. The insertion opening 54 has a first opening 54a that opens to the upstream end face 46c of the second adjuster pipe portion 46, and a second opening 54b that opens to the outer portion 48b of the peripheral wall portion 48.
[0028] The portion 52a of the insertion chamber 52 is formed so as to be recessed on the opposite side to the toilet connection portion 38 (the lower side in this embodiment) with respect to the inner circumferential surface of the second adjuster pipe portion 46, across the central axis CL2 of the second adjuster pipe portion 46. The portion 52a of the insertion chamber 52 can also be regarded as being recessed on the opposite side to the toilet connection portion 38, across the central axis CL2 of the second adjuster pipe portion 46, with respect to an extension line Le obtained by extending the inner circumferential surface of the second adjuster pipe portion 46 in the pipe axis direction Dd. The portion 52a of the insertion chamber 52 is provided in an inner corner formed by the peripheral wall portion 48 and the second step portion 50 of the pipe receiving portion 44.
[0029] The tube receiving portion 44 and the first adjuster tube portion 34 are fixed using an adhesive, a concave-convex fit, etc. The second socket tube 30 is fixed to the first socket tube 28. In this embodiment, an adhesive is used to bond the inner peripheral surface of the peripheral wall portion 48 of the tube receiving portion 44 and the outer peripheral surface of the first adjuster tube portion 34 together.
[0030] The second adjuster pipe portion 46 extends linearly and is disposed horizontally in this embodiment. The length of the second adjuster pipe portion 46 in the pipe axis direction Dd can be adjusted by cutting it.
[0031] A cylindrical drain pipe connection portion 56 is provided at the downstream end of the second adjuster pipe portion 46. When inserted inside the drain pipe 10, the drain pipe connection portion 56 is watertightly connected to the drain pipe 10 via a second seal member 58. The second seal member 58 is an elastic member such as a rubber packing.
[0032] A narrow space 60 is formed between the inner portion 48a of the pipe receiving portion 44 and the inner surface of the second adjuster pipe portion 46. The narrow space 60 is formed so as to widen in a specific direction Da toward the downstream side of the second adjuster pipe portion 46. The narrow space 60 becomes a part of the second internal water passage 45.
[0033] Refer to FIG. 6. The second socket pipe 30 can change its attitude with respect to the first socket pipe 28 between a first attitude Pc1 and a second attitude Pc2. In the first attitude Pc1 and the second attitude Pc2, the relative position of the second socket pipe 30 with respect to the first socket pipe 28 around the central axis CL3 of the first adjuster pipe portion 34 is different. The second socket pipe 30 of this embodiment is provided rotatably in the direction De around the central axis CL3 of the first adjuster pipe portion 34 in a state where it is inserted into the insertion chamber 52 of the pipe receiving portion 44. The second socket pipe 30 can move between the first attitude Pc1 and the second attitude Pc2 by rotating in this manner.
[0034] The first position Pc1 is a position corresponding to the drain pipe 10 of wall drainage type. When the second socket pipe 30 is in the first position Pc1, the second adjuster pipe portion 46 of the second socket pipe 30 is provided so as to extend rearward as it approaches the downstream side. When the second socket pipe 30 is in the first position Pc1, the drain pipe connection portion 56 of the second socket pipe 30 can be connected to the drain pipe 10 of wall drainage type. In this embodiment, the state in which the second socket pipe 30 is in the first position Pc1 will be described.
[0035] The second position Pc2 corresponds to the floor drainage drain pipe 10. When the second socket pipe 30 is in the second position Pc2, the second adjuster pipe portion 46 of the second socket pipe 30 is arranged to extend downward toward the downstream side. When the second socket pipe 30 is in the second position Pc2, the drain pipe connection portion 56 of the second socket pipe 30 can be connected to the floor drainage drain pipe 10.
[0036] The angle between the central axis CL3 of the first adjuster pipe portion 34 of the first socket pipe 28 and the central axis CL2 of the second adjuster pipe portion 46 of the second socket pipe 30 is defined as θ. In this case, in order to accommodate the drain pipe 10 of wall drainage specification and floor drainage specification, the angle θ of the drain socket 12 is preferably set to 40° to 50°, and is preferably closer to 45°.
[0037] Please refer to Fig. 7. Fig. 7 shows drain pipes 10 with different drainage distances La1 and La2, and a drain socket 12 that can accommodate them. The drain socket 12 that can accommodate wall drainage specifications can adjust the position of the drain pipe connection part 56 relative to the drain pipe 10 in a specific direction Da (up-down direction Z) by adjusting the length of the first adjuster pipe part 34. In addition, the drain socket 12 can adjust the position of the drain pipe connection part 56 relative to the drain pipe 10 in the connection direction Db by adjusting the length of the second adjuster pipe part 46.
[0038] The drain socket 12 is capable of connecting the toilet 16 and the drain pipe 10 by aligning the position of the drain pipe connection part 56 with respect to the drain pipe 10 in this manner. In turn, the drain socket 12 is capable of adjusting the drainage distance La (drainage height in this embodiment) that can be accommodated by the drain socket 12. Figure 7 shows the drain pipe 10 at the upper limit position Pa of the range of drainage distance that can be accommodated by the drain socket 12. When the drain pipe 10 is at this upper limit position Pa, the positions of the drain pipe connection part 56 and the toilet connection part 38 in the specific direction Da (up-down direction Z) are closest.
[0039] Please refer to Figure 8. A method for installing the toilet 16 using the above-mentioned drain socket 12 will be described below. The method for installing the drain socket 12 will also be described below.
[0040] First, the drainage distance La (drainage height in this embodiment) of the drain pipe 10 is measured on-site (S10).
[0041] Refer to FIG. 9. In FIG. 9, only the central axis CL1 of the drain pipe 10 is shown. Next, the cutting position Pd1 of the first adjuster pipe portion 34 required to align the position of the drain socket 12 relative to the drain pipe 10 in the specific direction Da is specified (S12). A hypothetical condition is assumed in which the toilet 16 is placed at the planned installation position Pe, the drain socket 12 is connected to the toilet drainage path 20, and the drain pipe 10 is at the position of the drainage distance La measured in S10. In this hypothetical condition, interference between the drain socket 12 and other objects (such as the drain pipe 10) is not taken into consideration. FIG. 9 shows the drain socket 12 in this hypothetical condition. The planned installation position Pe refers to a position that is predetermined as the position where the toilet 16 should be installed, and is described in, for example, the installation instructions. "The position is aligned in the specific direction Da" means that, in this hypothetical condition, the position of the central axis CL2 of the drain socket 12 is aligned in the specific direction Da relative to the central axis CL1 of the drain pipe 10. The central axis CL2 refers to the central axis of the second adjuster pipe portion 46 of the second socket pipe 30.
[0042] In identifying the cutting position Pd1 of the first adjuster pipe portion 34, a correspondence relationship that uniquely associates the drainage distance La of the drain pipe 10 with the cutting position Pd1 of the first adjuster pipe portion 34 may be obtained in advance. In this case, in S12, the cutting position Pd1 of the first adjuster pipe portion 34 may be identified from the drainage distance La measured in S10 using the correspondence relationship. This correspondence relationship is described, for example, in the installation instructions. This correspondence relationship is described, for example, as "When the drainage height of the drain pipe 10 is 30 cm, cut at a position 10 cm from the opening end 34a of the first adjuster pipe portion 34 in the pipe axis direction Dc."
[0043] Alternatively, the drain socket 12 may be temporarily assembled to the toilet 16 in order to determine the cutting position Pd1 of the first adjuster pipe portion 34. More specifically, the toilet 16 is placed in a position shifted in the connection direction Db from the intended installation position Pe, and the drain socket 12 is temporarily assembled to the toilet 16. After this, the position of the central axis CL2 of the drain socket 12 in the specific direction Da is measured, and the difference between this measurement value and the drainage distance La of the drain pipe 10 is calculated. From this difference value, the cutting length of the first adjuster pipe portion 34 required to align the position of the drain socket 12 with respect to the drain pipe 10 is geometrically calculated, thereby determining the cutting position Pd1 of the first adjuster pipe portion 34.
[0044] Next, the length of the first adjuster pipe portion 34 in the pipe axis direction Dc is adjusted (S14) so that the position of the drain socket 12 in the specific direction Da (in this embodiment, the up-down direction Z) relative to the drain pipe 10 is aligned. The length of this first adjuster pipe portion 34 is adjusted by cutting the first adjuster pipe portion 34 at the cutting position Pd1 identified in S12.
[0045] Refer to FIG. 10. Next, the cutting position Pd2 of the second adjuster pipe portion 46 required to align the position of the drain socket 12 relative to the drain pipe 10 in the connection direction Db is specified (S16). "The position is aligned in the connection direction Db" means that the position of the drain socket 12 is aligned relative to the drain pipe 10 so that the toilet drainage channel 20 of the toilet 16 to be placed at the planned installation position Pe and the drain pipe 10 can be connected by the drain socket 12. If the length of the second adjuster pipe portion 46 is too short, the drain socket 12 will not reach either the toilet drainage channel 20 of the toilet 16 or the drain pipe 10, and the toilet 16 and the drain pipe 10 cannot be connected by the drain socket 12. On the other hand, if the length of the second adjuster pipe portion 46 is too long, the drain socket 12 will get in the way and the toilet 16 will not be able to be placed at the planned installation position Pe. The length of the second adjuster pipe portion 46 will be adjusted to avoid these situations.
[0046] To identify this cutting position Pd2, the length Sat of the drain socket 12 in the connection direction Db required to connect the toilet 16 and the drain pipe 10 with the drain socket 12 is calculated. The required socket length Sat can be calculated, for example, using the following dimensions Sa1, Sa2, and Sa3 in the connection direction Db.
[0047] Please refer to Figure 2. Dimension Sa1 is the insertion depth of the toilet drainage channel 20 into the drain socket 12. This dimension S1 is preset as the length required to ensure the required sealing performance by the first seal member 40. Dimension Sa1 is described in the installation instructions or the like.
[0048] Please refer to Figure 11. Dimension Sa2 is the center distance from the opening center C2 of the downstream end opening 20b of the toilet drainage channel 20 to the opening center C1 of the upstream end opening 10a of the drainage pipe 10. For this dimension Sa2, for example, a measured value when the toilet 16 is actually placed at the intended installation position Pe may be used.
[0049] Refer to FIG. 12. The dimension Sa3 is the insertion depth of the drain socket 12 into the drain pipe 10. This dimension Sa3 can be obtained, for example, as follows. First, the dimension Aa1 from the opening center C3 of the upstream end opening 12a of the drain socket 12 to the opening center C4 of the downstream end opening 12b is actually measured. The upstream end opening 12a is an insertion port for inserting the toilet drainage channel 20 exposed to the outside, and is provided in the pressing member 42 in this embodiment. The downstream end opening 12b constitutes the downstream end of the internal water channel of the drain socket 12, and is provided in the second adjuster pipe portion 46 in this embodiment. In addition, the drain socket 12 is connected to the drain pipe 10, and the dimension Aa2 in the connection direction Db from the opening center C3 of the drain socket 12 to the opening center C1 of the drain pipe 10 is measured. At this time, the drain socket 12 is inserted into the drain pipe 10 until it hits the back side of the drain pipe 10. The dimensions Aa1 and Aa2 are measured based on the drain socket 12 after the first adjuster pipe portion 34 is cut in S14. The dimension Sa3 can be calculated by subtracting the dimension Aa2 from the dimension Aa1 of the drain socket 12. In addition, if the dimension Sa3 is preset in the installation instructions or the like, that dimension may be used.
[0050] Please refer to Figure 10. The sum of the above dimensions Sa1, Sa2, and Sa3 is the required socket length Sat. The dimension obtained by subtracting the required socket length Sat from the dimension Aa1 of the drain socket 12 is called the required cut length Ba. At this time, the cut position Pd2 of the second adjuster pipe portion 46 can be specified as a position spaced apart from the opening end 46a of the first adjuster pipe portion 46 by the required cut length Ba.
[0051] Next, the length of the second adjuster pipe portion 46 in the pipe axis direction Dd is adjusted (S18) so that the position of the drain socket 12 in the connection direction Db relative to the drain pipe 10 is aligned. The length of this second adjuster pipe portion 46 is adjusted by cutting the second adjuster pipe portion 46 at the cutting position Pd2 identified in S16.
[0052] Next, the first adjuster pipe portion 34 of the first socket pipe 28 and the pipe receiving portion 44 of the second socket pipe 30 are fixed (S20). At this time, the first socket pipe 28 and the second socket pipe 30 are fixed in a posture corresponding to the drainage specification of the drain pipe 10 from the first posture Pc1 and the second posture Pc2. In this embodiment, the first socket pipe 28 and the second socket pipe 30 are fixed in the first posture Pc1 corresponding to the drain pipe 10 of the wall drainage specification. This is performed, for example, by using an adhesive, a concave-convex fitting, or the like, as described above.
[0053] Refer to FIG. 13. Next, the toilet 16 and the drain pipe 10 are connected using the drain socket 12 (S22). This is performed in parallel with the work of placing the toilet 16 at the planned installation position Pe. This S22 is performed, for example, by moving the toilet 16 with the drain socket 12 already connected to the drain pipe 10. At this time, the bolt fixing portion 36 of the drain socket 12 is fixed to the rear wall portion Wa of the toilet room by the bolt B. At this time, the toilet 16 is moved so that the drain socket 12 passes through the rear opening portion 26a of the cavity portion 26 of the toilet 16, thereby placing the toilet 16 at the planned installation position Pe. After placing the toilet 16 at the planned installation position Pe, the toilet 16 is fixed to either the floor F or the rear wall portion Wa of the toilet room using a fixing device (not shown).
[0054] The effects of the drain socket 12 described above will now be described.
[0055] (A) The first socket pipe 28 includes a first adjuster pipe portion 34, and the second socket pipe 30 includes a second adjuster pipe portion 46. That is, different adjuster pipe portions 34, 46 are provided on the individual socket pipes 28, 30. Therefore, even if the lengths of the adjuster pipe portions 34, 46 after cutting are close to each other, it is easy to distinguish the first adjuster pipe portion 34 and the second adjuster pipe portion 46 from each other in appearance. For example, it is easy to recognize that the first adjuster pipe portion 34 is provided on a socket pipe having a toilet connection portion 38 (i.e., the first socket pipe 28). Similarly, it is easy to recognize that the second adjuster pipe portion 46 is provided on a socket pipe not having a toilet connection portion 38 (i.e., the second socket pipe 30). Therefore, it is possible to suppress erroneous assembly of the first adjuster pipe portion 34 to the drain pipe 10.
[0056] (B) According to this embodiment, the drainage distance of the drain pipe 10 that can be accommodated can be adjusted by cutting each of the adjuster pipe portions 34, 46. Therefore, a single drain socket 12 can be used to accommodate drain pipes 10 with different drainage distances.
[0057] (C) In order to accommodate drain pipes 10 with different drainage distances, it is possible to prepare multiple types of drain sockets. In this case, it is necessary to discard unused drain sockets from among the multiple types of drain sockets. In this regard, according to the present embodiment, it is not necessary to prepare multiple types of drain sockets, so that it is possible to avoid discarding the drain sockets.
[0058] (D) In cases where a toilet is replaced due to renovation or the like, it may not be possible to confirm the drainage distance until the toilet 16 is removed on-site. In this case, after the drainage distance of the drain pipe is confirmed on-site, a drain socket that can accommodate that drainage distance is arranged. In this regard, according to this embodiment, after the drainage distance of the drain pipe is confirmed on-site, the drain pipe 10 can be accommodated with that drainage distance by cutting each adjuster pipe portion 34, 46. Therefore, the drain socket 12 can be arranged before the drainage distance is confirmed on-site, and the time required to install the drain socket 12 can be shortened.
[0059] (E) In order to accommodate different drainage distances, it is possible to use a drainage socket made of a soft material. According to this embodiment, the drainage socket 12 made of a hard material can be used, so that the deterioration of drainage performance caused by loosening of the soft part can be prevented. In addition, since it is less likely to deteriorate than a drainage socket made of a soft material, stable performance can be ensured for a long period of time.
[0060] (F) The pipe receiving portion 44 of the second socket pipe 30 is provided at the upstream end of the second adjuster pipe portion 46. Therefore, the drain pipe connection portion 56 can be brought closer to the toilet connection portion 38 in the specific direction Da by an overlapping amount 66 (see FIG. 14) of the first adjuster pipe portion 34 overlapping the second adjuster pipe portion 46 in the pipe axis direction Dd. In turn, the upper limit of the drainage distance range that can be accommodated by the drain socket 12 can be widened. In this case, widening the upper limit of the drainage distance range means that the adjustment range of the drainage distance range in the specific direction Da can be widened.
[0061] (G) Refer to FIG. 14. As in this embodiment, the structure connecting the first adjuster pipe portion 34 of the first socket pipe 28 and the pipe receiving portion 44 of the second socket pipe 30, which extend obliquely with respect to the front-rear direction X, is called the oblique connection structure 62. In addition, the structure connecting the first adjuster pipe portion 34 and the pipe receiving portion 44, which extend along a direction perpendicular to the front-rear direction X, is called the straight connection structure 64. In the case of the oblique connection structure 62, the maximum dimension Eb of the narrow space 60 in the specific direction Da can be increased while securing the dimension Ea of the same overlapping space 66 in the specific direction Da, compared to the straight connection structure 64. In other words, according to this embodiment, the required discharge performance can be easily secured by widening the upper limit of the drainage distance range of the drain socket 12 by securing the overlapping space 66, while increasing the maximum dimension Eb of the narrow space 60.
[0062] (H) The pipe receiving portion 44 has an insertion chamber 52 into which the first adjuster pipe portion 34 is inserted. Therefore, compared to when the pipe receiving portion 44 does not have the insertion chamber 52, the upper limit of the drainage distance range that can be accommodated by the drain socket 12 can be made wider.
[0063] (I) A portion of the insertion chamber 52 is formed so as to be recessed with respect to the inner circumferential surface of the second adjuster pipe portion 46 on the opposite side to the toilet connection portion 38 across the central axis CL2 of the second adjuster pipe portion 46. Therefore, compared to a case in which this condition is not satisfied, the upper limit of the drainage distance range that can be accommodated by the drain socket 12 can be made wider. In this embodiment, compared to a case in which the entire insertion chamber 52 is provided only above the lower end of the inner circumferential surface of the second adjuster pipe portion 46, the upper limit of the drainage distance range that can be accommodated by the drain socket 12 can be made wider.
[0064] The dimension L1 of the outer portion 48b of the pipe receiving portion 44 is shorter than the dimension L2 of the inner portion 48a. This makes it easier to bring the drain pipe connecting portion 56 closer to the toilet connecting portion 38 in the vertical direction Z while avoiding interference between the upstream pipe portion 32 of the first socket pipe 28 and the outer portion 48b of the pipe receiving portion 44, compared to a case in which the dimension L1 of the outer portion 48b is matched to the dimension L2 of the inner portion 48a. Furthermore, the upper limit of the drain height range that can be accommodated by the drain socket 12 can be widened.
[0065] (J) When the second adjuster pipe portion 46 is in the first position Pc1, it can be connected to a wall drainage drain pipe 10, and when the second adjuster pipe portion 46 is in the second position Pc2, it can be connected to a floor drainage drain pipe 10. This allows a common drain socket 12 to be used for both floor drainage and wall drainage drain pipes 10.
[0066] The first adjuster pipe portion 34 extends obliquely downward with respect to the front-rear direction X as it moves downstream and rearward. Therefore, by cutting each of the adjuster pipe portions 34, 46, the drainage height can be adjusted as a corresponding drainage distance.
[0067] (Second embodiment) See FIG. 15. The second embodiment differs from the first embodiment mainly in terms of the drain pipe 10. The drain pipe 10 of this embodiment is of floor drainage specification and is installed on the floor F of the toilet room. As with the first embodiment, the drainage distance La, which is the distance in a specific direction Da of the drain pipe 10, varies from site to site. In the case of a floor drainage drain pipe 10, the "drainage distance" refers to the drainage center, and the "specific direction Da" is the front-to-rear direction X. The "drainage center" refers to the distance in the front-to-rear direction X from the rear wall Wa of the toilet room to the opening center C1 of the upstream end opening 10a of the drain pipe 10.
[0068] In this embodiment, a state in which the second socket pipe 30 is in the second position Pc2 that can accommodate the floor drainage drain pipe 10 will be described. The floor drainage drain socket 12 can adjust the position of the drain pipe connection part 56 relative to the drain pipe 10 in a specific direction Da (in this embodiment, the front-back direction X) by adjusting the length of the first adjuster pipe part 34. In addition, the drain socket 12 can adjust the position of the drain pipe connection part 56 relative to the drain pipe 10 in the connection direction Db by adjusting the length of the second adjuster pipe part 46. This allows the drain socket 12 to adjust the drain distance La (in this embodiment, the drain core) that can be accommodated by the drain socket 12. When the drain pipe 10 is at the upper limit position (not shown) of the drain distance range that can be accommodated by the drain socket 12, the positions of the drain pipe connection part 56 and the toilet connection part 38 in the specific direction Da (front-back direction X) are closest to each other, as in the first embodiment.
[0069] Please refer to Figure 8. A method for installing the toilet 16 using the above-mentioned drain socket 12 will be described below. The method for installing the drain socket 12 will also be described below.
[0070] First, the drainage distance La (the drainage center in this embodiment) of the drain pipe 10 is measured on-site (S10).
[0071] Refer to Fig. 16. Next, a cutting position Pd1 of the first adjuster pipe portion 34 required to align the position of the drain socket 12 in the specific direction Da relative to the drain pipe 10 is identified (S12). As in the first embodiment, "aligning the position in the specific direction Da" means that, under the above-mentioned hypothetical conditions, the central axis CL2 of the drain socket 12 is aligned in the specific direction Da relative to the central axis CL1 of the drain pipe 10. The method of identifying the cutting position Pd1 of the first adjuster pipe portion 34 is the same as in the first embodiment.
[0072] Next, similarly to the first embodiment, the length of the first adjuster pipe portion 34 in the pipe axis direction is adjusted so that the position of the drain socket 12 in the specific direction Da (front-rear direction) relative to the drain pipe 10 is aligned (S14).
[0073] Refer to Figure 17. Next, a cutting position Pd2 of the second adjuster pipe portion 46 required to align the position of the drain socket 12 relative to the drain pipe 10 in the connection direction Db is identified (S16). As in the first embodiment, "aligning the position in the connection direction Db" means that the position of the drain socket 12 relative to the drain pipe 10 is aligned so that the toilet drainage channel 20 of the toilet 16 to be placed in the intended installation position Pe and the drain pipe 10 can be connected by the drain socket 12.
[0074] To determine this cutting position Pd2, similar to the first embodiment, the necessary socket length Sbt required to connect the toilet 16 and the drain pipe 10 with the drain socket 12 is calculated. The necessary socket length Sbt can be calculated, for example, using the dimensions Sb1 and Sb2 in the following connection direction Db.
[0075] Refer to Figure 18. Dimension Sb1 is the center-to-center distance from the opening center C2 of the downstream end opening 20b of the toilet drainage channel 20 to the opening center C1 of the upstream end opening 10a of the drain pipe 10, as in the first embodiment.
[0076] Refer to FIG. 19. As in the first embodiment, the dimension Sb2 is the insertion depth of the drain socket 12 into the drain pipe 10. For example, the dimension Sb2 can be obtained as follows. First, the dimension Ab1 from the opening center C3 of the upstream end opening 12a of the drain socket 12 to the opening center C4 of the downstream end opening 12b is actually measured. In addition, the drain socket 12 is connected to the drain pipe 10, and the dimension Ab2 from the opening center C3 of the drain socket 12 to the opening center C1 of the upstream end opening 10a of the drain pipe 10 is measured. When measuring the dimensions Ab1 and Ab2, the drain socket 12 after the first adjuster pipe portion 34 is cut in S14 is used as a reference. The dimension Sb2 can be obtained by subtracting the dimension Ab2 from the dimension Ab1 of the drain socket 12.
[0077] Refer to Figure 17. The sum of the above dimensions Sb1 and Sb2 is the required socket length Sbt. The dimension obtained by subtracting the required socket length Sbt from the dimension Ab1 of the drain socket 12 is called the required cut-off length Bb. In this case, the cut-off position Pd2 of the second adjuster tube portion 46 can be specified as a position spaced apart from the open end 46a of the second adjuster tube portion 46 by the required cut-off length Bb.
[0078] Next, similarly to the first embodiment, the length of the second adjuster pipe portion 46 in the pipe axis direction Dd is adjusted so that the position of the drain socket 12 in the specific direction Da (front-rear direction X) relative to the drain pipe 10 is aligned (S18).
[0079] Next, similarly to the first embodiment, the first adjuster pipe portion 34 of the first socket pipe 28 and the pipe receiving portion 44 of the second socket pipe 30 are fixed (S20). At this time, the first socket pipe 28 and the second socket pipe 30 are fixed in the second posture Pc2 corresponding to the floor drainage specification drain pipe 10 as a posture according to the drainage specification of the drain pipe 10.
[0080] Please refer to Figure 20. Next, as in the first embodiment, the toilet 16 and the drain pipe 10 are connected using the drain socket 12. This step S22 is carried out, for example, by moving the toilet 16 with the drain socket 12 already connected to the drain pipe 10.
[0081] The drain socket 12 of this embodiment also includes the components described above in (A) to (J), and provides the effects corresponding to those descriptions.
[0082] (Third embodiment) See Fig. 21. The drain socket 12 of this embodiment differs from the first embodiment in terms of the bolt fixing portion 36 of the drain socket 12. The bolt fixing portion 36 of this embodiment is fixed to the toilet bowl 16 by a bolt B, not to the rear wall portion Wa of the toilet room. This figure shows a state in the middle of moving the toilet bowl 16 in the above-mentioned S22. In this case, in S22, for example, the toilet bowl 16 may be moved with the drain pipe 10 fixed to it.
[0083] (Fourth embodiment) See Fig. 22. Each adjuster tube 34, 46 may be provided with a marking 68 that serves as a guide for the cutting positions Pd1, Pd2 thereof. The marking 68 is, for example, configured with a scale indicating the length from the open end 34a, 46a of the adjuster tube 34, 46. This scale is provided on the adjuster tube 34, 46 by printing, engraving, or the like. When the required cutting length of the adjuster tube 34, 46 is known, the cutting positions Pd1, Pd2 of the adjuster tube 34, 46 can be recognized by understanding the marking 68.
[0084] There is no particular limitation on the specific example of the marking 68. In addition, when the drainage distance La of the drain pipe 10 and the cutting position Pd1 of the first adjuster pipe section 34 are uniquely determined, the marking 68 may be configured by a mark indicating the cutting position Pd1 corresponding to the drainage distance La. In this case, the marking 68 is configured by, for example, a mark indicating the "cutting position when the drainage height is 20 cm" on the first adjuster pipe section 34.
[0085] (Fifth embodiment) Refer to FIG. 23. In FIG. 23, for the toilet 16 of the toilet device 14, only the connected part 20a of the toilet drainage channel 20 is shown by a solid line, and the toilet 16 is shown by a two-dot chain line. In the first embodiment, an example was described in which the drainage distance La of the drain pipe 10 of wall drainage specification is the drainage height. As described above, this drainage distance La refers to the distance in the specific direction Da of the drain pipe 10 that changes from site to site. In addition, the drainage distance La may be the distance in the left-right direction Y from a reference position Pf that is predetermined in the toilet room to the opening center C1 of the drain pipe 10 (hereinafter referred to as the left-right distance). This reference position Pf refers to, for example, the central position between the rear wall portion Wa and a pair of adjacent side wall portions Wb of the toilet room. In this case, the "specific direction Da" is the left-right direction Y. In other words, in the case of the drain pipe 10 of wall drainage specification, the specific direction Da is either the up-down direction Z or the left-right direction Y.
[0086] The first adjuster pipe portion 34 of the first socket pipe 28 extends obliquely sideways with respect to the front-rear direction X as it moves downstream and rearward. Here, "sideways" refers to one side in the left-right direction Y. The first adjuster pipe portion 34 extends obliquely so as to move away from the center line Lc of the upstream pipe portion 32 as it moves downstream.
[0087] The drain socket 12 of this embodiment can adjust the position of the drain pipe connection part 56 relative to the drain pipe 10 in a specific direction Da (left-right direction Y) by adjusting the length of the first adjuster pipe part 34. In addition, the drain socket 12 can adjust the position of the drain pipe connection part 56 relative to the drain pipe 10 in the connection direction Db by adjusting the length of the second adjuster pipe part 46. This makes it possible to adjust the drainage distance La (left-right distance) in the left-right direction Y that can be accommodated by cutting each adjuster pipe part 34, 36. Even when the drain socket 12 of this embodiment is used, the installation method of the drain socket 12 described using FIG. 8 can be applied.
[0088] The drain socket 12 of this embodiment also includes the components described above in (A) to (J), and provides the effects corresponding to those descriptions.
[0089] Other variations of each component are described.
[0090] The orientation of the upstream end opening 10a of the drain pipe 10 is not particularly limited. In the case of wall drainage specifications, the embodiment has been described as an example in which the central axis CL1 of the drain pipe 10 is horizontal. Alternatively, the central axis CL1 of the drain pipe 10 may be slightly inclined with respect to the horizontal line. In the case of floor drainage specifications, the embodiment has been described as an example in which the central axis CL1 of the drain pipe 10 is vertical. Alternatively, the central axis CL1 of the drain pipe 10 may be slightly inclined with respect to the vertical line.
[0091] In the embodiment, the toilet 16 is described as being of a floor-standing type. Alternatively, the toilet 16 may be of a wall-hanging type.
[0092] The connected portion 20a of the toilet 16 may extend linearly downward toward the downstream side. In this case, the upstream pipe portion 32 of the drain socket 12 extends upward toward the upstream side.
[0093] The drain socket 12 may be used exclusively for either the wall drainage type or the floor drainage type drain pipe 10. Even when used exclusively for the floor drainage type drain pipe 10, the above-mentioned effects (A) to (J) can be obtained.
[0094] When used exclusively for the wall drainage type drain pipe 10, the second socket pipe 30 may be unable to change its relative position with respect to the first socket pipe 28 from the first position Pc1. Similarly, when used exclusively for the floor drainage type drain pipe 10, the second socket pipe 30 may be unable to change its relative position with respect to the first socket pipe 28 from the second position Pc2.
[0095] The example has been described in which the cutting position Pd1 of the first adjuster tube portion 34 of the first socket tube 28 is perpendicular to the tube axis direction Dc of the first adjuster tube portion 34. Alternatively, it may be oblique to the tube axis direction Dc. The same is true for the cutting position Pd2 of the second adjuster tube portion 46 of the second socket tube 30.
[0096] The second socket pipe 30 includes an inclined pipe portion provided coaxially with the first adjuster pipe portion 34, and a pipe receiving portion 44 may be provided on this inclined pipe portion.
[0097] The tube receiving portion 44 does not have to have the insertion chamber 52. This assumes, for example, a case in which the first socket tube 28 and the second socket tube 30 are fixed in a state in which the open end of the tube receiving portion 44 and the open end 34a of the first adjuster tube portion 34 are butted against each other.
[0098] Unlike the embodiment, the insertion chamber 52 does not have to be formed so as to be recessed with respect to the inner circumferential surface of the second adjuster pipe portion 46.
[0099] The dimension L1 of the outer portion 48b of the second socket tube 30 may be set independently of the dimension L2 of the inner portion 48a.
[0100] The number of adjuster tube portions 34, 46 of the socket tubes 28, 30 is not particularly limited. For example, there may be a plurality of them.
[0101] The order of the steps described in the method of installing the drain socket 12 is not particularly limited, and may be changed as long as there is no contradiction in the contents described. For example, the second adjuster pipe portion 46 of the second socket pipe 30 may be cut (S18) before the first adjuster pipe portion 34 of the first socket pipe 28 is cut (S14).
[0102] The above-mentioned embodiment and modified forms are examples. The technical ideas abstracted from these should not be interpreted as being limited to the contents of the embodiment and modified forms. The contents of the embodiment and modified forms are subject to many design changes, such as changes, additions, and deletions of components. In the above-mentioned embodiment, the contents subject to such design changes are emphasized by adding the notation "embodiment". However, design changes are also permitted even in contents without such notation. The hatching on the cross section of the drawing does not limit the material of the hatched object. The structures referred to in the embodiment and modified forms naturally include structures that are shifted by an error amount that can be considered to be the same when considering manufacturing errors, etc.
[0103] Any combination of the above components is also effective. For example, any description of another embodiment may be combined with the embodiment, or any description of an embodiment and another variation may be combined with the variation.
[0104] The following is a summary of each claim in the original application. (Claim 1) A first socket pipe having a toilet connection portion connected to the toilet and a first adjuster pipe portion extending obliquely with respect to the front-rear direction toward the downstream side and rearward; A drain socket comprising a second socket pipe having a pipe receiving portion to which the first adjuster pipe portion is connected, and a second adjuster pipe portion to be connected to a drain pipe installed in a toilet room. (Claim 2) 2. The drain socket according to claim 1, wherein the pipe receiving portion is provided at an upstream end of the second adjuster pipe portion. (Claim 3) 3. The drain socket according to claim 1, wherein the pipe receiving portion has an insertion chamber into which an open end of the first adjuster pipe portion is inserted. (Claim 4) The pipe receiving portion is provided at an upstream end portion of the second adjuster pipe portion, The drain socket of claim 3, wherein a portion of the insertion chamber is formed so as to be recessed relative to an inner surface of the second adjuster pipe portion on the opposite side to the toilet connection portion across the central axis of the second adjuster pipe portion. (Claim 5) a peripheral wall portion of the pipe receiving portion including an inner portion disposed inside the second adjuster pipe portion and an outer portion disposed outside the second adjuster pipe portion, 5. The drain socket according to claim 3, wherein a dimension of the outer portion of the first adjuster pipe portion in the pipe axis direction is shorter than a dimension of the inner portion in the pipe axis direction. (Claim 6) A drain socket as described in any one of claims 1 to 5, wherein the second socket pipe is capable of changing its attitude relative to the first socket pipe between a first attitude and a second attitude, and when in the first attitude, is connectable to the drain pipe of wall drainage type, and when in the second attitude, is connectable to the drain pipe of floor drainage type. (Claim 7) 7. The drain socket according to claim 1, wherein the first adjuster pipe portion extends obliquely downward with respect to the front-rear direction toward the downstream side and toward the rear. (Claim 8) 7. The drain socket according to claim 1, wherein the first adjuster pipe portion extends obliquely laterally with respect to the front-rear direction toward the downstream side and rearward. (Claim 9) A method for installing a drain socket according to any one of claims 1 to 8, comprising the steps of: When the drain pipe is a wall drainage type, the specific direction is either the up-down direction or the left-right direction, and when the drain pipe is a floor drainage type, the specific direction is the front-back direction. When the direction along the central axis of the upstream end opening of the drain pipe is called the connection direction, The length of the first adjuster pipe portion is adjusted by cutting the first adjuster pipe portion so that the position of the drain socket in the specific direction relative to the drain pipe is aligned; A drain socket installation method in which the length of the second adjuster pipe portion is adjusted by cutting the second adjuster pipe portion so that the position of the drain socket in the connection direction relative to the drain pipe is aligned. (Claim 10) Using the drain socket according to claim 6, The drain socket installation method according to claim 9, wherein the first socket pipe and the second socket pipe are fixed in a position corresponding to the drainage specifications of the drain pipe from among the first position and the second position. [Explanation of symbols]
[0105] 10...drain pipe, 12...drain socket, 16...toilet, 20...toilet drainage channel, 28...first socket pipe, 30...second socket pipe, 32...upstream pipe section, 34...first adjuster pipe section, 38...toilet connection section, 44...pipe receiving section, 46...second adjuster pipe section, 48...circumferential wall section, 48a...inner portion, 48b...outer portion, 52...insertion chamber, 52a...part, 56...drain pipe connection section.
Claims
1. A toilet connection part connected to a toilet drainage channel provided in a toilet, A drain pipe connection part to be connected to a drain pipe installed in a toilet room, The toilet connection portion is connected to the toilet drainage channel via a first seal member, The drain pipe connection portion is a drain socket that is connected to the drain pipe via a second seal member.
2. A drain socket as described in claim 1, wherein the drain pipe connection portion is inserted inside the drain pipe.
3. The toilet connection portion is a drain socket as described in claim 2, into whose inside the toilet drainage channel is inserted.
4. The first sealing member is a rubber packing, The drain socket according to claim 1 , wherein the second seal member is a rubber packing.
5. A drain socket as described in claim 1, wherein a space is provided inside the drain socket downstream and above the downstream end of the internal waterway of the toilet drain channel.
6. A drain socket as described in claim 1, wherein the toilet connection portion and the drain pipe connection portion are provided as separate members.
7. A drain socket as described in claim 1, having a fixing part which is fixed to either a wall of the toilet room or the toilet bowl.
8. A drain socket as described in claim 1, which, when fixed to either a wall of a toilet room or the toilet bowl, has a portion which extends diagonally in the fore-and-aft direction as it approaches downstream and rearward.
9. A drain socket as described in Claim 8, wherein the portion extends diagonally sideways toward the downstream and rear when fixed to either the wall portion or the toilet.
10. A portion extending obliquely downward with respect to the front-to-rear direction toward the downstream side and rearward, A drain socket as described in claim 1, wherein when a cut surface along the front-to-rear direction is viewed from the left-to-right direction, the point in the internal water channel of the portion where the dimension perpendicular to the flow direction is smallest is located at the downstream end of the portion.
11. A portion extending obliquely downward with respect to the front-to-rear direction toward the downstream side and toward the rear, the inner diameter of the toilet connection portion is greater than the inner diameter of the portion; 2. The drain socket of claim 1, wherein an inner diameter of the drain pipe connection portion is greater than an inner diameter of the portion.
12. A drain socket as described in claim 1, which is provided at a location different from the contact location of the toilet connection portion and the first sealing member, and has a portion supported by either the wall portion of the toilet room or the toilet.
13. A method for installing a drain socket according to any one of claims 1 to 12, comprising: When the direction along the central axis of the upstream end opening of the drainage pipe is referred to as the connection direction, A method for installing a drain socket, comprising adjusting the length of the drain socket in the front-to-rear direction by cutting the drain socket so that the position of the drain socket in the connection direction relative to the drain pipe is aligned.
14. A method of installing a drain socket as described in claim 13, comprising connecting the drain socket to the drain pipe and then connecting the toilet to the drain socket.
15. A toilet apparatus having a drain socket described in any one of claims 1 to 12.