JP2015068057A - Structure and method for connecting drainage system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure for connecting a drainage system, which can suppress variations in construction quality when the drainage system is connected to a tank body.SOLUTION: A structure for connecting a drainage system to a bottom surface part 101 of a tank body 100 comprises: a drainage hole 103 that is formed on the bottom surface part 101; a connected body 111 that is arranged on the downside of a peripheral edge part 109 of the drainage hole 103 in such a manner as to vertically overlap the peripheral edge part 109 and that configures a part of the drainage system; and a connector 30 that fixes the peripheral edge part 109 and the connected body 111 in the state of sandwiching them.

Description

  The present invention relates to a connection structure and a connection method for connecting a drainage device to a bottom surface of a tank body such as a sink and a wash bowl.

  The home is the place where most people spend the longest time. Ease of spending depends on the function as well as the design of the house. For tanks such as sinks used in the kitchen, users tend to demand functionality with a stylish design.

  A drainage hole is formed in the bottom surface of the tank body. A drainage device is connected to the lower side of the drainage hole at a location that is not touched by human eyes. In this connection structure, usually, a base is attached to the peripheral edge of the drainage hole, and a drainage device is connected to the base on the lower side of the tank body (see Patent Document 1). The cap is provided with a locking portion as a flange at the top, and the locking portion is locked to the peripheral edge of the drain hole. The base is provided with a male screw portion on the outer peripheral surface of the lower part thereof. A lock nut as a part of the drainage device is screwed into the male screw portion of the base, and the main body of the drainage device is attached to the lock nut.

  In this structure, in order to seal between the peripheral edge of the drainage hole and the base, normally, a seal member such as packing is provided between the lock nut and the peripheral edge of the drainage hole, or between the peripheral edge of the drainage hole and the base. Is placed. When a sufficient amount of the lock nut is tightened on the male screw portion of the base, the seal member is sandwiched from both sides in the vertical direction by the lock nut and the base, and sealing performance is exhibited by the sandwich.

JP2012-1907

  In the structure of Patent Document 1, it is necessary to tighten a sufficient amount of a lock nut on the male screw portion of the base in order to exhibit the sealing performance by the sealing member. However, it is difficult to make the amount of tightening of the lock nut constant regardless of the installer. In particular, the tightening amount of the lock nut is difficult to visually recognize from the outside, and the construction quality may vary. If the amount of tightening of the lock nut is insufficient, the seal member cannot obtain a desired sealing property, which may cause water leakage from the drainage device into the tank body.

  The present invention has been made in view of such problems, and its purpose is to connect a drainage device connection structure and a connection that can suppress variations in construction quality or occurrence of water leakage in connecting the drainage device to the tank body. It is to provide a method.

  In order to solve the above-described problems, an aspect of the present invention relates to a connection structure for a drainage device. The connection structure of the drainage device is a structure in which the drainage device is connected to the bottom surface portion of the tank body, so that the drainage hole formed in the bottom surface portion overlaps with the peripheral edge portion below and above the peripheral edge portion of the drainage hole. And a connecting body that is disposed and constitutes a part of the drainage device, and a connector that sandwiches and fixes the peripheral edge portion and the connecting body.

  According to this aspect, since the coupling body is disposed so as to overlap the peripheral edge of the drainage hole, the coupling body can be easily positioned in the vertical direction in the drainage hole. In addition, since the positioned connecting body and the peripheral portion of the drainage hole are sandwiched and fixed by the connecting tool, the vertical position of the connecting body and the connecting tool with respect to the drainage hole is less likely to be varied by the installer, and variation in construction quality can be suppressed. .

  Moreover, the above-mentioned aspect WHEREIN: You may further provide the sealing member crushed from the radial direction both sides by the connection tool and any one of the coupling body or the peripheral part. According to this aspect, the gap between the members on both radial sides of the seal member is unlikely to fluctuate due to construction errors, and it is possible to obtain a desired sealing property by suppressing variations in construction quality, thereby suppressing the occurrence of water leakage.

  Moreover, in the above-mentioned aspect, the connection tool includes a first connection member that is locked to the peripheral edge of the drain hole, and a second connection member that is detachably attached to the first connection member. When the connecting member and the second connecting member sandwich and fix the peripheral portion and the coupling body, and the first connecting member is in the non-locking position where it is not locked to the peripheral portion, the second portion is connected to the first connecting member. The dimensional relationship may be determined so that the second connection member can be attached to the first connection member when the attachment is impossible and the first connection member is in the locking position where the first connection member is locked to the peripheral edge. According to this aspect, the second connection member can be mounted only when the first connection member is in a predetermined position, and the positional relationship between the first connection member and the second connection member after the mounting is less likely to vary depending on the installer. Variations in construction quality can be satisfactorily suppressed.

  Moreover, in the above-mentioned aspect, the connection tool includes a first connection member that is locked to the peripheral edge of the drain hole, and a second connection member that is detachably attached to the first connection member. When the connecting member and the second connecting member sandwich and fix the peripheral portion and the connecting body, and the connecting body is in a position that does not overlap the peripheral portion, the second connecting member cannot be attached to the first connecting member, The dimensional relationship may be determined so that the second connecting member can be attached to the first connecting member when the connecting body is positioned so as to overlap the peripheral edge portion. According to this aspect, the second connecting member can be mounted only when the connecting body is in a predetermined position, and the positional relationship between the connecting body and the second connecting member after the mounting is less likely to vary depending on the installer, resulting in variations in construction quality. Can be suppressed satisfactorily.

  Moreover, in the above-mentioned aspect, the drainage hole may be formed with a hanging wall that hangs down on the inner periphery thereof, and the coupling body may have a fitting portion with which the hanging wall is fitted. According to this aspect, the connecting body can be easily positioned in the radial direction with respect to the drain hole. Therefore, the radial position of the coupling body with respect to the drain hole is less likely to vary by the installer, and variations in construction quality can be suppressed.

  Further, in the above-described aspect, a spacer may be further provided between the peripheral portion of the drain hole and the connection body, and the connection body may be disposed so as to overlap the peripheral portion with the spacer interposed therebetween. . According to this aspect, it is only necessary to prepare a plurality of types of spacers having dimensions corresponding to the dimensional conditions of the tank body, and there is no need to increase the types of connected bodies that tend to have complicated shapes according to the dimensional conditions of the tank body. Therefore, when connecting a drainage apparatus to the tank body from which a dimension condition differs, the increase in member cost can be suppressed.

  Moreover, another aspect of the present invention relates to a method for connecting a drainage device. The connection method of the drainage device is a method of connecting the drainage device to the bottom surface portion of the tank body, and overlaps with the peripheral edge portion vertically below the peripheral edge portion of the drainage hole formed in the bottom surface portion of the tank body, A connecting body constituting a part of the drainage device is arranged, and the peripheral edge portion and the connecting body are sandwiched and fixed by a connecting tool.

  According to this aspect, since the coupling body is disposed so as to overlap the peripheral edge of the drainage hole, the coupling body can be easily positioned in the vertical direction in the drainage hole. In addition, since the positioned connecting body and the peripheral portion of the drainage hole are sandwiched and fixed by the connecting tool, the vertical position of the connecting body and the connecting tool with respect to the drainage hole is less likely to be varied by the installer, and variation in construction quality can be suppressed. .

  According to this invention, when connecting a drainage device to a tank body, the dispersion | variation in construction quality can be suppressed.

It is front sectional drawing which shows the connection structure of the drainage device which concerns on 1st Embodiment. It is an exploded view of the connection structure of the drainage device concerning a 1st embodiment. It is an expansion front sectional view showing the connection structure of the drainage device concerning a 1st embodiment. (A) is a top sectional view showing the state where the lower connecting member is attached to the upper connecting member, (b) is a sectional view taken along line AA in (a), and (c) is in (b). It is a B section enlarged view. It is a plane sectional view showing the state where the lower connection member was removed from the upper connection member concerning a 1st embodiment. It is a front view which shows the water seal cylinder which concerns on 1st Embodiment. (A) shows the state where the upper connecting member is in the non-locking position, (b) shows the state where the connecting body is in the non-overlapping position, and (c) shows that the upper connecting member is in the locking position. It is explanatory drawing which shows the state which exists in a superposition | polymerization position. It is an expanded front sectional view which shows the connection structure of the drainage device which concerns on 2nd Embodiment.

[First Embodiment]
FIG. 1 shows the tank body 100 in which the connection structure 10 of the drainage device 110 according to the first embodiment is used, and FIG. 2 shows a division view of the connection structure 10. The tank body 100 shows the sink installed in the kitchen etc. of a house. The tank body 100 only needs to receive discharged water, and may be a wash bowl or the like. In the illustrated example, the artificial marble as a resin material is used as the material of the tank body 100, but another resin material or a metal material such as stainless steel may be used.

  A drain hole 103 penetrating in the vertical direction is formed in the bottom surface portion 101 of the tank body 100. The drainage hole 103 includes a hanging wall 105 and an engagement wall 107. The drooping wall 105 is formed in a cylindrical shape by drooping the inner circumference downward from the upper end edge 103 a of the drainage hole 103. The engagement wall 107 is provided so as to protrude in an annular shape radially inward from the lower portion of the hanging wall 105. The engagement wall 107 is formed so that its inner diameter is smaller than the inner diameter of the hanging wall 105. The drainage hole 103 is provided as a stepped hole in which a hanging wall 105 and an engagement wall 107 are arranged vertically. The hanging wall 105 and the engaging wall 107 are integrally formed as a part of the bottom surface portion 101 of the tank body 100.

  A drainage device 110 is connected to the drainage hole 103 by a connection structure 10 described later. The drainage device 110 is connected to a sewage pipe (not shown) on the sewage side via a relay pipe 147. The water used in the tank body 100 flows into the main body 121 (described later) of the drainage device 110 through the drainage hole 103, and the main body 121 of the drainage device 110 externally passes the water flowing from the drainage hole 103 through the relay pipe 147. Discharge to a sewer pipe.

  The drainage device 110 according to the present embodiment is a drainage trap using a sealing cylinder 131. The drainage device 110 includes a connecting body 111, a main body 121, and a sealing tube 131.

  The coupling body 111 constitutes a part of the drainage device 110 and is provided to connect a connection tool 30 and a main body 121 described later. In the illustrated example, the coupling body 111 is provided separately from the main body 121. As shown in FIG. 3, the coupling body 111 is disposed below the peripheral edge 109 of the drain hole 103 and is fixed to the drain hole 103 by a connecting tool 30 described later. The peripheral portion 109 is a portion provided as a part of the tank body 100 around the drain hole 103, and an annular portion provided around the hanging wall 105 and the engagement wall 107 and the upper edge 103 a of the drain hole 103. 101b are included.

  The coupling body 111 includes a fixed part 112, an upper fitting part 113, an overlapping part 114, a lower fitting part 115, and an upper flange part 117. The coupling body 111 is made of a resin material, and these are integrally molded.

  The fixed portion 112 is formed in an annular shape, and an insertion hole 112a is formed inside thereof. The upper fitting portion 113 is provided as a dent that opens upward and is recessed downward on the upper side of the fixed portion 112. The overlapping portion 114 is provided on the outer side in the radial direction from the fixed portion 112 in the upper portion of the coupling body 111. The lower fitting portion 115 is provided as a cylindrical groove that opens downward and is recessed upward on the outer peripheral side of the fixed portion 112, and the upper end portion 121 b of the main body 121 of the drainage device 110 is fitted inside the lower fitting portion 115. Is done. The upper flange portion 117 is provided on the outer peripheral side of the lower fitting portion 115.

  The fixed portion 112 of the coupling body 111 is disposed so as to overlap vertically with the hanging wall 105 and the engaging wall 107 as the peripheral edge portion 109 of the drain hole 103. The overlapping portion 114 of the coupling body 111 is disposed so as to overlap the annular portion 101b as the peripheral edge portion 109 in the vertical direction. The hanging wall 105, the engaging wall 107, and the fixed portion 112 are provided so as to be adjacent to each other in the vertical direction, and surfaces that are opposed to each other in the vertical direction are in contact with each other. Further, the annular portion 101b and the overlapping portion 114 are provided so as to be adjacent to each other in the vertical direction, and the surfaces facing each other in the vertical direction are in contact with each other. That is, the coupling body 111 is disposed so as to overlap with the peripheral edge portion 109 of the drainage hole 103 in a state where the upper and lower surfaces thereof are in contact with each other adjacent to the upper side. When the coupling body 111 and the peripheral edge 109 overlap vertically, the coupling body 111 is positioned in the vertical direction in the drain hole 103 so that the upward movement of the coupling body 111 is restricted.

  In the coupling body 111, a cylindrical hanging wall 105 is fitted inside the upper fitting portion 113. Due to the fitting of the upper fitting portion 113 and the hanging wall 105, the connecting body 111 is positioned in the radial direction on the hanging wall 105 of the drain hole 103 so that the movement of the connecting body 111 in the radial direction is restricted.

  Returning to FIGS. 1 and 2, the main body 121 is formed in a bottomed cylindrical shape having an opening as an inlet on the upper end side, and an outlet 123 is formed on the side thereof. A discharge pipe 125 is provided at the outlet 123 of the main body 121, and a relay pipe 147 is connected to the tip of the discharge pipe 125.

  The main body 121 is provided with a lower flange portion 127 on the outer peripheral surface of the upper portion thereof. The lower flange portion 127 is brought into contact with the upper flange portion 117 of the coupling body 111, and the main body 121 is fixed to the coupling body 111 by sandwiching them with the fasteners 149. As for the lower fitting part 115 of the coupling body 111 and the main body 121, an annular groove is formed on one of the peripheral surfaces (the outer peripheral surface of the main body 121 is shown in the figure), and the seal member is disposed in the annular groove. Sealed by O-ring 129.

  The sealing tube 131 is inserted from the upper side into the main body 121 through the drainage hole 103, and is fixed up and down with respect to the drainage hole 103 by the connection tool 30 described later. The lower end 131 a of the sealing tube 131 is disposed at a position spaced above the bottom surface 121 a of the main body 121 and below the outlet 123 of the main body 121. In the drainage device 110, a first flow path 141 is provided in the sealing cylinder 131, and a second flow path 143 is provided between the lower portion of the sealing cylinder 131 and the main body 121. The first flow path 141 continues from the upper end to the lower end of the sealing cylinder 131. The second flow path 143 continues from the lower end of the sealing cylinder 131 to the outlet 123.

  Sealed water 145 is stored below the outlet 123 of the main body 121 in the first channel 141 and the second channel 143. That is, in the drainage device 110 as a drainage trap, the sealed water 145 that blocks the air flow is stored in a part of the flow path from the tank body 100 side that is the inflow side to the sewage side that is the outflow side. The sealed water 145 prevents intrusion of a strange odor, sanitary pests and the like from the sewage side into and out of the tank body 100.

  As shown in FIG. 3, the connection structure 10 of the drainage device 110 includes a connection tool 30, an upper seal member 50 (first seal member), in addition to the drainage hole 103, the coupling body 111, and the sealing tube 131. The lower seal member 60 (second seal member) is included.

  The connection tool 30 functions as a base for connecting the drainage device 110 to the drainage hole 103. The connection tool 30 includes an upper connection member 31 (first connection member) and a lower connection member 41 (second connection member). The upper connection member 31 includes an outer cylinder portion 33 and a lower locking portion 35. In the illustrated example, the upper connecting member 31 is made of a metal material such as stainless steel, and these are integrally formed.

  The outer cylinder portion 33 is inserted into the drain hole 103 from above. Further, the outer cylinder portion 33 is inserted into the insertion hole 112 a of the coupling body 111 from the upper side below the drainage hole 103. In the present embodiment, the outer peripheral surface and the inner peripheral surface of the outer cylindrical portion 33 are formed as curved surfaces extending in a straight line with no step in the vertical direction. That is, the outer peripheral surface of the outer cylinder portion 33 is provided with a screwless portion where no thread is formed. The outer cylinder part 33 is formed so that its outer diameter is slightly smaller than the inner diameter of the drain hole 103.

  The lower locking portion 35 is provided in an annular shape as an outward flange at the upper end portion of the outer cylinder portion 33. The outer diameter of the lower locking portion 35 is smaller than the inner diameter of the hanging wall 105 of the drain hole 103 and larger than the inner diameter of the engaging wall 107. The lower locking portion 35 is locked to the upper surface 108 of the engagement wall 107 of the drain hole 103 from above via the upper seal member 50. The lower locking portion 35 is disposed in the lower portion of the hanging wall 105 so as to be located below the central position 105 a in the vertical direction of the hanging wall 105.

  FIG. 4A is a plan sectional view showing a state where the lower connecting member 41 is mounted on the upper connecting member 31, and FIG. 4B is a sectional view taken along line AA in FIG. FIG. 4B is an enlarged view of part B of (b). FIG. 4A is also a cross-sectional view taken along the line CC of FIG. FIG. 5 is a view showing a state where the lower connection member 41 is removed from the upper connection member 31.

  The lower connection member 41 includes a cylindrical portion 42 and is molded using a resin material or the like as a raw material. As for the cylindrical part 42, the outer cylinder part 33 of the upper side connection member 31 is arrange | positioned inside.

  The lower connection member 41 is configured by combining a plurality of divided bodies 43 (two in the drawing) divided in the circumferential direction. Each divided body 43 is disposed so as to surround the outer tube portion 33 of the upper connection member 31. Each divided body 43 is provided with a claw portion 43a as a protrusion protruding in the radial direction at one of the opposite ends in the circumferential direction, and a receiving portion 43b as a recess recessed in the radial direction at the other. Each divided body 43 is coupled by engaging the claw portion 43 a of one divided body 43 with the receiving portion 43 b of the other divided body 43.

  When a certain amount of force is applied to move the opposed ends of the plurality of divided bodies 43 away from each other, the claw portions 43a come out of the receiving portions 43b with elastic deformation of the circumferential ends of the divided bodies 43. On the other hand, when the opposite end portions of the plurality of divided bodies 43 are moved closer to each other, the claw portions 43a are inserted into the receiving portions 43b with elastic deformation of the circumferential end portions of the divided bodies 43, and the claw portions 43a are Engaged with and coupled to the receiving portion 43b. That is, the plurality of divided bodies 43 are detachably coupled.

  The cylindrical portion 42 of the lower connection member 41 is provided with an engaging portion 45 as a protrusion on the radially inner side of the drain hole 103. The engaging portion 45 is provided in a partial range in the circumferential direction of the cylindrical portion 42. The outer cylinder portion 33 of the upper connection member 31 is provided with an engaged portion constituted by a through hole 33 a below the drainage hole 103. The through hole 33 a is a partial range in the circumferential direction of the outer cylinder portion 33, and is provided in a non-threaded portion of the outer cylinder portion 33. The through hole 33a penetrates the outer cylinder portion 33 in the radial direction.

  When the plurality of divided bodies 43 are coupled, the engaging portion 45 of the lower connection member 41 passes through the through hole 33a of the outer cylinder portion 33 and protrudes toward the inside in the radial direction of the drainage hole 103. The through hole 33a Fitted. The engaging portion 45 engages with the bottom surface of the through hole 33a, and the lower connecting member 41 is positioned in the vertical direction with respect to the upper connecting member 31 by the engagement. Further, since the engaging portion 45 is fitted into the through hole 33a, the lower connecting member 41 is positioned in the circumferential direction on the upper connecting member 31.

  When the plurality of divided bodies 43 are moved so as to be released, the engaging portion 45 of the lower connection member 41 is extracted from the through hole 33a in the radial direction. On the other hand, when the engaging portion 45 of the lower connection member 41 is moved so as to be inserted into the through hole 33a, the engaging portion 45 is fitted into the through hole 33a and engaged with the bottom surface thereof. That is, when the engaging portion 45 of the lower connecting member 41 is displaced in the radial direction with respect to the upper connecting member 31, the engagement with the through hole 33a as the engaged portion is released. In addition, the plurality of divided bodies 43 constituting the lower connection member 41 include an engagement position where the engagement portion 45 is engaged with a through hole 33a as an engaged portion, and a release where these engagements are released. By moving between the positions, the outer connecting portion 31 of the upper connecting member 31 is detachably mounted.

  The engaging portion 45 of the lower connection member 41 passes through the through hole 33a of the outer cylinder portion 33 and protrudes inward in the radial direction of the drain hole 103, and is fitted as a step on the inner peripheral surface of the outer cylinder portion 33. A convex portion 37 is provided. The fitting convex portion 37 is fitted with the tube-side fitting portion 133b of the water sealing tube 131 as described later.

  Returning to FIG. 3, on the outer peripheral surface of the cylindrical portion 42 of the lower connecting member 41, an annular portion 42 b that protrudes radially outward from the upper end portion is provided. When the lower connection member 41 is in the mounting position to be mounted on the upper connection member 31, the fixed portion 112 of the coupling body 111 is engaged in a state of being placed on the upper surface of the annular portion 42 b of the lower connection member 41. The connecting body 111 and the peripheral edge 109 are sandwiched and fixed by the connecting tool 30. At this time, the connection tool 30 includes the fixed portion 112 of the coupling body 111 and the engagement wall 107 of the peripheral portion 109, the lower locking portion 35 of the upper connection member 31, and the annular portion 42 b of the lower connection member 41. And pinch and fix. The annular portion 42b of the lower connection member 41 is provided as an attachment portion 47 that can be fixedly attached by sandwiching a part of the drainage device 110.

  The upper seal member 50 and the lower seal member 60 are provided to block water flowing into the tank body 100 from the inside of the main body 121 of the drainage device 110 between the drainage hole 103 and the connector 30. The upper seal member 50 is disposed between the hanging wall 105 of the drain hole 103 and the outer cylinder portion 33 of the upper connection member 31. The lower seal member 60 is disposed between the fixed portion 112 of the coupling body 111 and the outer cylinder portion 33 of the upper connection member 31. These seal members 50 and 60 are constituted by O-rings as elastic members in the illustrated example.

  The upper seal member 50 is crushed by the inner peripheral surface of the hanging wall 105 and the outer peripheral surface of the outer cylindrical portion 33 from both sides in the radial direction of the drainage hole 103, and seals between these by its restoring force. The lower seal member 60 is crushed by the inner peripheral surface of the fixed portion 112 and the outer peripheral surface of the outer cylinder portion 33 from both sides in the radial direction of the drainage hole 103, and seals between them by its restoring force. At this time, the coupling body 111 functions as a member that sandwiches the lower seal member 60 between the connecting tool 30 and the main body 121 of the drainage device 110 and seals the lower seal member 60 between them.

  The upper seal member 50 and the lower seal member 60 are adjusted in inner diameter, outer diameter, cross-sectional area, etc. so that the compression ratio is within a predetermined range in order to obtain a desired sealing property. In addition, the diameter from the central axis of the drainage hole 103 between the inner peripheral surface of the hanging wall 105 and the outer peripheral surface of the outer cylindrical portion 33 provided on both radial sides of the upper seal member 50 is also the compressibility of the upper seal member 50. Adjustment is made to be within a predetermined range. Further, the diameter from the central axis of the drain hole 103 between the inner peripheral surface of the fixed portion 112 and the outer peripheral surface of the outer cylindrical portion 33 provided on both sides in the radial direction of the lower seal member 60 is also determined by the lower seal member 60. The compression rate is adjusted to be within a predetermined range.

  The sealing cylinder 131 includes an inner cylinder part 133 and an upper locking part 135. The inner cylinder part 133 is formed longer in the vertical direction than the outer cylinder part 33 of the upper connection member 31, and is inserted into the outer cylinder part 33. The inner cylinder part 133 is provided with an annular groove part 133a on the outer peripheral side of the upper part thereof, and a packing 137 as an annular seal member is fitted into the annular groove part 133a. The sealing tube 131 and the upper connection member 31 are sealed with a packing 137.

  FIG. 6 is a front view showing the sealed water tube 131. The inner cylinder part 133 is provided with a cylinder side fitting part 133b below the annular groove part 133a. The cylinder side fitting part 133b is provided in a groove shape along the circumferential direction so as to be recessed from one side (left side in FIG. 6) to the other side (right side in FIG. 6) of the inner cylinder part 133. Returning to FIG. 3, the fitting convex portion 37 provided in the outer tube portion 33 of the connector 30 is fitted into the tube side fitting portion 133 b. By the fitting of the tube side fitting portion 133 b and the fitting convex portion 37, the sealing tube 131 is fixed up and down with respect to the drainage hole 103. When the connector 30 and the sealing tube 131 are relatively moved in the circumferential direction so that the fitting convex portion 37 approaches the opening side (left side in FIG. 6) of the groove formed by the tube side fitting portion 133b, the tube side fitting is performed. The fitting between the portion 133b and the fitting convex portion 37 is released. When the seal tube 131 is moved upward from this state, the seal tube 131 can be extracted from the outer tube portion 33 of the connector 30.

  The upper locking portion 135 is provided at the upper end portion of the inner cylinder portion 133. The upper locking portion 135 is locked to the lower locking portion 35 of the upper connection member 31 from above. The sealing tube 131 is disposed in the drain hole 103 so as to cover the upper connection member 31 when the upper engagement member 135 is in the engagement position with the upper connection member 31. Further, the upper locking portion 135 is formed so as to fit below the upper end edge 103 a of the drainage hole 103 while covering the inner peripheral surface of the hanging wall 105.

  Next, an example of a method for connecting the drainage device 110 to the drainage hole 103 will be described. First, the outer cylinder portion 33 of the upper connection member 31 is moved so as to be inserted downward into the drain hole 103 (S11). The upper connection member 31 is moved in a state where the upper seal member 50 is attached to the outer cylinder portion 33 so as to be wound around. The upper connecting member 31 is moved until the lower locking portion 35 is locked to the engaging wall 107 of the drain hole 103 via the upper seal member 50. At this time, the upper seal member 50 is crushed by the inner peripheral surface of the hanging wall 105 and the outer peripheral surface of the outer cylindrical portion 33 when it moves into the drain hole 103. When the upper connecting member 31 is in a locking position where the upper connecting member 31 is locked to the engaging wall 107 of the drainage hole 103 via the upper seal member 50, a part of the outer cylindrical portion 33 protrudes below the drainage hole 103. To do. A lower seal member 60 is attached to be wound around the outer peripheral side of the protruding outer cylinder portion 33.

  The connecting body 111 is moved upward so as to approach the peripheral edge 109 of the drainage hole 103 from below (S13). The coupling body 111 is moved so that the hanging wall 105 is fitted in the upper fitting portion 113. The connecting body 111 is moved between other members adjacent to the upper side (peripheral portion 109 in the present embodiment) until their vertically opposed surfaces come into contact with each other. At this time, the lower seal member 60 is pushed by the inner peripheral surface of the fixed portion 112 and the outer peripheral surface of the outer cylindrical portion 33 when the fixed portion 112 of the coupling body 111 moves to the outside in the radial direction. It will be crushed.

  The lower connection member 41 is attached to the upper connection member 31 (S15). In the present embodiment, the lower connection member 41 is mounted by inserting the engaging portions 45 of the plurality of divided bodies 43 into the through holes 33 a of the upper connection member 31. Each divided body 43 is engaged with the claw portion 43a and joined to the receiving portion 43b.

  Here, in step S11, since the amount of downward movement of the upper connection member 31 is insufficient, as shown in FIG. Consider a case where the upper side is not locked from the upper side. In this case, at least a part of the through hole 33a as the engaged portion of the upper connecting member 31 is located higher than the bottom surface of the coupling body 111, and the engaging portion 45 of the lower connecting member 41 is inserted into the through hole 33a. Absent. On the other hand, as shown in FIG. 7C, a case is considered where the upper connecting member 31 is in a locking position where the upper edge connecting member 31 is locked from the upper side. In this case, the through hole 33a of the upper connection member 31 is located lower than the bottom surface of the coupling body 111, and the engaging portion 45 of the lower connection member 41 can be inserted into the through hole 33a.

  Further, in step S13, since the amount of upward movement of the coupling body 111 is insufficient, as shown in FIG. 7B, the position where the coupling body 111 does not overlap with the peripheral edge 109 (hereinafter referred to as a non-polymerization position). )). When in the non-polymerization position, the coupling body 111 does not come into contact with other members adjacent to the upper side. Also in this case, at least a part of the through hole 33a of the upper connection member 31 is higher than the bottom surface of the coupling body 111, and the engaging portion 45 of the lower connection member 41 cannot be inserted into the through hole 33a.

  On the other hand, as shown in FIG. 7C, a case is considered in which the coupling body 111 is in a position (hereinafter referred to as a superposition position) that overlaps the peripheral edge portion 109 vertically. Also in this case, the through hole 33a of the upper connection member 31 is located lower than the lower surface of the coupling body 111, and the engaging portion 45 of the lower connection member 41 can be inserted into the through hole 33a.

  That is, when the upper connection member 31 is in the non-locking position, or when the coupling body 111 is in the non-overlapping position, the engaging portion 45 of the lower connection member 41 cannot be inserted into the through hole 33a, and the upper connection member 31 is not inserted. The lower connection member 41 cannot be mounted. On the other hand, when the upper connection member 31 is in the locking position and the coupling body 111 is in the overlapping position, the engaging portion 45 of the lower connection member 41 is inserted into the through-hole 33a, and the lower connection to the upper connection member 31 is made. The member 41 can be attached. The upper connection member 31, the lower connection member 41, and the coupling body 111 have a dimensional relationship that satisfies such a condition. When the lower connection member 41 is attached to the upper connection member 31, the coupling body 111 and the peripheral edge 109 are sandwiched and fixed by the connection tool 30.

  Subsequently, the main body 121 is moved from the lower side toward the upper side so that the upper end portion 121b of the main body 121 is fitted into the lower fitting portion 115 of the coupling body 111 (S17). When the lower flange portion 127 of the main body 121 comes into contact with the upper flange portion 117 of the coupling body 111, these are sandwiched and fixed by the fasteners 149. The main body 121 and the connection tool 30 are connected by the connecting body 111.

  Finally, the inner cylinder part 133 of the sealing cylinder 131 is inserted into the outer cylinder part 33 of the upper connection member 31, and the cylinder-side fitting part 133 b of the sealing cylinder 131 and the fitting convex part 37 of the connector 30 are fitted. The sealing tube 131 is fixed up and down with respect to the drain hole 103 (S19).

  According to the connection structure 10 described above, since the coupling body 111 is disposed so as to overlap the peripheral edge 109 of the drainage hole 103, the coupling body 111 can be easily positioned in the drainage hole 103 in the vertical direction. Further, since the positioned connecting body 111 and the peripheral edge 109 of the drainage hole 103 are sandwiched and fixed by the connecting tool 30, the vertical position of the connecting body 111 and the connecting tool 30 with respect to the drainage hole 103 is less likely to vary depending on the installer. Variations in construction quality can be suppressed. Further, since the peripheral portion 109 of the drainage hole 103 and the connecting body 111 are fixed in a state where they are vertically stacked, the connecting body 111 is firmly fixed in the vertical direction, and the drainage device 110 connected to the connecting body 111 has a backlash. You can suppress the date.

  Further, according to the connection structure 10 described above, the upper seal member 50 is disposed between the connector 30 and the peripheral edge 109, and the lower seal member 60 is disposed between the connector 30 and the coupling body 111, These are crushed from both sides in the radial direction. When the seal member is crushed from both sides in the vertical direction, when adjusting the amount of movement of the upper and lower sides of the seal member by tightening or the like, the interval between the upper and lower sides of the seal member varies greatly due to construction errors. Sealability cannot be obtained stably. On the other hand, according to the connection structure 10 described above, since the seal members 50 and 60 are crushed from both sides in the radial direction, the interval between the members on the both sides in the radial direction is not easily changed due to construction errors. A desired sealing property can be obtained while suppressing the variation in quality.

  Further, according to the connection structure 10 described above, the upper connection member 31 can be attached to the lower connection member 41 when the upper connection member 31 is in the locking position and the coupling body 111 is in the overlapping position. Therefore, the lower connection member 41 can be attached only when the upper connection member 31 and the coupling body 111 are in a predetermined position, and the positional relationship of each member after the attachment is less likely to vary by the installer, and the construction quality variation is good. Can be suppressed.

  Further, according to the connection structure 10 described above, the connecting body 111 is provided with the upper fitting portion 113 in which the hanging wall 105 is fitted inside, so that the connecting body 111 can be easily diametered with respect to the drain hole 103. Can be positioned in the direction. Therefore, the radial position of the coupling body 111 with respect to the drain hole 103 is less likely to vary by the installer, and variations in construction quality can be suppressed. Further, the coupling body 111 is firmly fixed in the radial direction, and rattling of the drainage device 110 coupled to the coupling body 111 can be suppressed.

  As shown in FIG. 4A, the bottom surface of the through-hole 33a is configured as a receiving surface 33b provided along the circumferential direction of the drainage hole 103. Further, the engaging portion 45 is formed so that the lower surface thereof is along the receiving surface 33b, and is engaged so as to come into surface contact with the receiving surface 33b. A load acting on the lower connection member 41 is easily and stably transmitted to the upper connection member 31, and the main body 121 of the drainage device 110 attached to the lower connection member 41 is difficult to rattle.

  In addition, the through hole 33 a of the upper connection member 31 and the engagement portion 45 of the lower connection member 41 engaged with the through hole 33 a are located at positions spaced equiangularly in the circumferential direction of the drain hole 103. A plurality of sets are arranged so as to. In the example shown in the figure, these are arranged so as to be located at equiangular intervals so that four sets are provided in the circumferential direction of the drainage hole 103. A load acting on the lower connection member 41 is easily and stably transmitted to the upper connection member 31, and the main body 121 of the drainage device 110 attached to the lower connection member 41 is difficult to rattle.

  In addition, the sealing tube 131 is provided with a plurality of plate-shaped knobs 131d at intervals on the inner side thereof in the circumferential direction. FIG. 3 shows only one knob 131d. The user can move the seal tube 131 while holding the knob 131 d to extract the seal tube 131 from the outer tube portion 33 of the connector 30.

  In addition, the cylindrical portion 42 of the lower connection member 41 is provided with a support portion 42 c that faces the lower surface of the upper connection member 31. The support part 42c is formed in a shape corresponding to the shape of the outer cylinder part 33 of the upper connection member 31, that is, in an annular shape, and the lower surface of the upper connection member 31 is in contact with the upper surface thereof. When the lower connecting member 41 is mounted on the upper connecting member 31, if the support portion 42c is brought into contact with the lower surface of the upper connecting member 31, the lower connecting member 41 can be easily aligned with the upper connecting member 31, Workability at the time of mounting becomes good. Moreover, since the support part 42c contacts the lower surface of the upper side connection member 31, the fixing degree of the lower side connection member 41 with respect to the upper side connection member 31 increases, and the drainage apparatus 110, such as the coupling body 111, tried to swing up and down. Sometimes the shaking is effectively suppressed.

[Second Embodiment]
FIG. 8 shows the connection structure 10 of the drainage device 110 according to the second embodiment. The present embodiment is mainly different from the first embodiment in that the connection structure 10 includes a spacer 70. Hereinafter, the same reference numerals are given to the same elements as those described in the first embodiment, and a duplicate description is omitted.

  The tank body 100 is configured such that the material is made of a metal material such as stainless steel and the thickness thereof is thinner than that of the first embodiment.

  The spacer 70 is disposed between the peripheral edge 109 of the drain hole 103 and the coupling body 111. The spacer 70 includes a lower overlapping portion 71, a spacer side fitting portion 73, and an upper overlapping portion 75. The spacer 70 is made of a hard material such as a resin, and these are integrally molded.

  The lower overlapping portion 71 is formed in an annular shape, and an insertion hole 71a is formed inside thereof. The outer cylindrical portion 33 of the upper connection member 31 is inserted through the insertion hole 71a. The spacer-side fitting portion 73 is provided as a recess that opens upward and is recessed downward on the upper side of the lower overlapping portion 71. The upper overlapping portion 75 is provided on the outer side in the radial direction from the lower overlapping portion 71 above the spacer 70.

  In the spacer 70, the hanging wall 105 is fitted inside the spacer-side fitting portion 73. In the coupling body 111, the hanging wall 105 is fitted inside the upper fitting portion 113 with the spacer 70 interposed therebetween.

  The lower overlapping portion 71 and the upper overlapping portion 75 of the spacer 70 and the peripheral edge portion 109 are provided so as to be adjacent to each other in the vertical direction, and surfaces facing each other in the vertical direction are in contact with each other. The lower overlapping portion 71 and the upper overlapping portion 75 of the spacer 70 and the coupling body 111 are provided so as to be adjacent to each other in the vertical direction, and surfaces facing each other in the vertical direction contact each other. That is, the spacer 70 is disposed so as to overlap vertically with the vertically opposed surfaces 109 and the coupling body 111 in contact with the vertically opposed surfaces thereof. Further, the coupling body 111 is disposed so as to overlap the peripheral portion 109 with the lower overlapping portion 71 and the upper overlapping portion 75 interposed therebetween. At this time, the coupling body 111 is in a state where the upper and lower surfaces thereof are brought into contact with another member (spacer 70) adjacent to the upper side.

  The effect of the above connection structure 10 is demonstrated. The tank body 100 has various dimensional conditions such as thickness and inclination of the bottom surface portion 101. For this reason, in order to arrange the connection body 111 so that it may overlap with the peripheral part 109 of the drainage hole 103, if the several types of connection body 111 of the dimension according to the dimensional condition of the tank body 100 is prepared, the connection body 111 will be complicated. Therefore, the member cost is greatly increased. On the other hand, according to the connection structure 10 according to the present embodiment, a plurality of types of spacers 70 having dimensions corresponding to the dimensional conditions of the tank body 100 may be prepared. There is no need to increase the variety. Therefore, an increase in member cost can be suppressed when connecting the drainage device 110 to the tank body 100 having different dimensional conditions.

  As mentioned above, although this invention was demonstrated based on embodiment, embodiment only shows the principle and application of this invention. In the embodiment, many modifications and arrangements can be made without departing from the spirit of the present invention defined in the claims.

  Although the drainage device 110 according to the above-described embodiment has been described as a drainage trap using the sealing tube 131, the drainage device 110 may not use the sealing tube 131, and may be a drainage trap such as an S trap or a trap. It may be configured. Moreover, the drainage device 110 should just be able to discharge | emit the water which flowed from the drainage hole 103 of the tank body 100 outside, and does not need to be comprised as a drainage trap.

  In addition, the example in which the connecting body 111 of the drainage device 110 is provided separately from the main body 121 has been described. However, the coupling body 111 is only required to be connected to at least the connector 30 so that the main body 121 can be connected, and the coupling body 111 and the main body 121 may be integrally formed by integral molding. Moreover, although the connection body 111 and the main body 121 of the drainage apparatus 110 demonstrated the example which pinches | interposes and fixes the upper side flange part 117 and the lower side flange part 127 with the fastener 149, the fixing method is limited to this. In addition, you may fix using a volt | bolt nut etc. besides this.

  Although the drain hole 103 has been described as including the hanging wall 105 and the engaging wall 107, the engaging wall 107 may not be included. Further, the drainage hole 103 may not include both the hanging wall 105 and the engaging wall 107. In this case, the connection tool 30 may lock the lower locking portion 35 of the upper connection member 31 to the annular portion 101 b around the upper edge 103 a of the drain hole 103.

  The connection tool 30 has been described in which the two members of the upper connection member 31 and the lower connection member 41 are detachably mounted. However, they may be integrally provided so as not to be removable.

  In the above-described embodiment, when the position of the engaging portion 45 of the lower connecting member 41 is shifted in the radial direction with respect to the upper connecting member 31, the engagement with the through hole 33a as the engaged portion is released. An example was explained. As a modified example, the engaged portion may not be the through hole 33a penetrating in the radial direction, but may be provided as a dent recessed at least in the radial direction. In addition to this, the engaged portion may be provided as a protrusion on the outer peripheral surface of the outer cylindrical portion 33 of the upper connection member 31. In this case, when the position of the engaging portion 45 of the lower connection member 41 is shifted in the radial direction or the circumferential direction of the drainage hole 103, the engaging portion 45 may be engaged with the engaged portion as a protrusion from above. In any case, when the engaging portion 45 of the lower connection member 41 is shifted in the radial direction or the circumferential direction of the drainage hole 103, the engaging position engaged with the engaged portion, and the engaged portion It may be configured to move between a release position where the engagement with is released.

  In the above-described embodiment, the coupling body 111 has been described as being disposed so as to overlap vertically with both the hanging wall 105 and the engaging wall 107 as the peripheral edge portion 109 and the annular portion 101b. However, it may be arranged so as to overlap only one of them.

  The upper seal member 50 and the lower seal member 60 are not essential in the present invention, and only one of them may be provided.

DESCRIPTION OF SYMBOLS 10 Connection structure, 30 Connection tool, 31 Upper connection member, 33 Outer cylinder part, 33a Through-hole, 35 Lower side locking part, 37 Fitting convex part, 41 Lower connection member, 42 Cylindrical part, 42b Annular part, 43 Divided body, 43a Claw part, 43b Receiving part, 45 Engaging part, 47 Mounting part, 50 Upper seal member, 60 Lower seal member, 70 Spacer, 100 Tank body, 101 Bottom part, 103 Drain hole, 103a Upper edge , 105 Suspended wall, 107 Engaging wall, 109 Peripheral part, 110 Drainage device, 111 Connected body, 112 Fixed part, 113 Upper fitting part, 114 Superposition part, 115 Lower fitting part, 117 Upper flange part, 121 Main body, 127 Lower flange portion, 129 O-ring, 131 Sealed tube, 133 Inner tube portion, 133b Tube side fitting portion, 135 Upper locking portion, 137 Packing, 1 1 first flow path, 143 the second flow path, 145 seal water.

Claims (7)

A drainage device connected to the bottom of the tank body,
Drainage holes formed in the bottom surface,
A connecting body that is arranged on the lower side of the peripheral edge of the drainage hole so as to overlap the peripheral edge, and constitutes a part of the drainage device;
A drainage device connection structure comprising: a connection tool that sandwiches and fixes the peripheral edge portion and the coupling body.   The drainage device connection structure according to claim 1, further comprising a seal member that is crushed from both sides in a radial direction by the connection tool and any one of the coupling body and the peripheral portion. The connection tool includes a first connection member that is locked to a peripheral portion of the drain hole, and a second connection member that is detachably attached to the first connection member, and the first connection member The peripheral portion and the coupling body are sandwiched and fixed by the second connection member,
When the first connecting member is in the non-locking position where it is not locked to the peripheral edge, the second connecting member cannot be attached to the first connecting member, and the first connecting member is locked to the peripheral edge. 3. The drainage device connection structure according to claim 1, wherein the dimensional relationship is determined so that the second connection member can be attached to the first connection member when in the locking position. The connection tool includes a first connection member that is locked to a peripheral portion of the drain hole, and a second connection member that is detachably attached to the first connection member, and the first connection member The peripheral portion and the coupling body are sandwiched and fixed by the second connection member,
When the connecting body is in a position that does not overlap vertically with the peripheral edge, the second connecting member cannot be attached to the first connecting member, and when the connecting body is in a position overlapping vertically with the peripheral edge, 4. The drainage device connection structure according to claim 1, wherein the dimensional relationship is determined so that the second connection member can be attached to the first connection member. 5. The drainage hole is formed with a hanging wall that hangs downward on the inner periphery,
The drainage device connection structure according to any one of claims 1 to 4, wherein the coupling body includes a fitting portion into which the hanging wall is fitted. A spacer disposed between the peripheral edge of the drain hole and the connector;
The drainage device connection structure according to any one of claims 1 to 5, wherein the connecting body is disposed so as to overlap the peripheral portion with the spacer in between. A method of connecting a drainage device to the bottom of the tank body,
A connecting body constituting a part of the drainage device is disposed below the peripheral edge of the drainage hole formed in the bottom surface so as to overlap the peripheral part.
A drainage device connection method, wherein the peripheral edge portion and the coupling body are sandwiched and fixed by a connector.

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