JP2015068056A - Structure for connecting drainage system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure for connecting a drainage system, which can achieve higher designability or functionality.SOLUTION: A structure 10 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 of the tank body 100, and a connector 30 capable of connecting the drainage system to the drainage hole 103. In the drainage hole 103, a suspended wall 105 suspended downward on an inner periphery is formed. The connector 30 is fixed in a lower part within the suspended wall 105.

Description

  The present invention relates to a connection structure 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 design as well as the function of the housing equipment. For tanks such as sinks used in kitchens, users tend to demand stylish designs with ease of use.

  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 upper surface of the base is fixed in a state exposed in the vicinity of the upper end edge of the drain hole.

JP2012-1907

  In the structure of Patent Document 1, the entire upper surface of the base appears to be exposed on the bottom surface of the tank body. In order to achieve a higher design, there is room for a cleaner appearance of the exposed portion of the bottom of the tank body. Furthermore, in the structure of Patent Document 1, the upper surface of the base is exposed in the vicinity of the upper end edge of the drain hole, and there is a step between the bottom surface of the tank body and the upper surface of the base. Dust such as scales and dust is likely to collect at this step, and cleaning is required to remove the dust. In order to achieve higher functionality, there is room for improvement so that it is difficult to collect garbage.

  This invention is made | formed in view of such a subject, The objective is to provide the connection structure of the drainage device which can implement | achieve higher design property or functionality.

  In order to solve the above-described problems, an aspect of the present invention relates to a connection structure for a drainage device. The drainage device connection structure is a structure in which the drainage device is connected to the bottom surface portion of the tank body, and includes a drainage hole formed in the bottom surface portion, and a connector that can connect the drainage device to the drainage hole. The hole is formed with a drooping wall that hangs downward on the inner periphery, and the connector is fixed at a lower portion in the drooping wall.

  According to this aspect, since the connector functioning as a base is fixed at the lower part in the hanging wall, when the bottom surface of the tank body is viewed, a part of the connector is easily hidden at the upper edge of the drainage hole. The range in which the connector appears to be exposed is reduced. Therefore, it becomes difficult to see the connection tool on the bottom surface of the tank body, and even when the drainage device is connected to the tank body using the connection tool, the appearance around the drain hole of the tank body becomes clear, and higher design can be realized.

  Moreover, in the above-mentioned aspect, you may further provide the cover body arrange | positioned in a drain hole so that the internal peripheral surface of a drooping wall and a connection tool may be coat | covered. According to this aspect, when the bottom surface of the tank body is viewed, the range in which the hanging wall and the connection tool appear to be exposed is significantly reduced, and the appearance around the drain hole of the tank body is made cleaner.

  Moreover, in the above-mentioned aspect, a cover body may be formed so that it may be settled below the upper end edge of a drain hole. According to this aspect, it becomes difficult to generate a step in which dust is collected in the flowing water path from the bottom surface of the tank body to the inside of the drain hole, and it becomes easier to clean the periphery of the drain hole by reducing the dust collecting portion, thereby realizing higher functionality. it can.

  Moreover, in the above-mentioned aspect, the cover body may be a sealed cylinder inserted into a bottomed cylindrical main body constituting the drainage device. According to this aspect, while exhibiting the function as a sealing cylinder, the external appearance around the drainage hole can be made clear as described above, and further, the effect of reducing the number of dust collecting portions can be exhibited.

  Further, the drainage device connection structure according to another aspect of the present invention is a structure in which the drainage device is connected to the bottom surface portion of the tank body, and the drainage holes formed as stepped holes in the bottom surface portion, An upper part that is locked to the step surface and a drainage device that can be attached to the lower part, and a cover body that is disposed in the drainage hole so as to cover the connection part above the locking point between the step surface and the connection part The connecting tool and the cover body are characterized in that the connecting tool is inserted through the drainage hole in a nested structure in which the connecting tool is an outer cylinder and the cover body is an inner cylinder.

  According to this aspect, when the bottom surface of the tank body is viewed, the range in which the connector appears to be exposed is significantly reduced, the appearance around the drain hole of the tank body is clean, and higher design can be realized.

  According to the present invention, it is difficult to see the connector on the bottom surface of the tank body, the appearance around the drain hole of the tank body becomes clear, and higher design can be realized.

It is front sectional drawing which shows the connection structure of the drainage device which concerns on 1st Embodiment. It is an expansion front sectional view showing the connection structure of the drainage device concerning a 1st embodiment. It is an exploded view of 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. It is front sectional drawing which shows the connection structure of the drainage device which concerns on 2nd Embodiment. It is an expanded front sectional view which shows the connection structure of the drainage device which concerns on 2nd Embodiment. It is front sectional drawing which shows the pipe joint which concerns on 3rd Embodiment. It is front sectional drawing which shows the use condition of the pipe joint which concerns on 3rd Embodiment.

[First Embodiment]
FIG. 1 shows a 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 an exploded 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 bottom surface 101 a of the tank body 100 is provided around the drain hole 103 so as to be inclined downward toward the drain hole 103.

  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 project annularly from the lower part of the hanging wall 105 to the inside in the radial direction of the drainage hole 103. 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 formed 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, 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 recess that opens upward and is recessed downward on the upper side of the fixed portion 112, and the cylindrical hanging wall 105 is fitted inside the recess. 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.

  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 water seal tube 131 to the outlet 123 of the main body 121.

  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. A lower seal member 60 (second seal member).

  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 the outer cylindrical portion 33 and the lower locking portion 35 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 from the upper side into the insertion hole 112 a of the fixed portion 112 of the coupling body 111 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. The outer cylinder portion 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 formed to be 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 of the engagement wall 107 of the drain hole 103 from above via the upper seal member 50. That is, the upper part of the connector 30 is locked to the step surface 108 of the drain hole 103 as a stepped hole.

  The upper end portion 31 a of the upper connection member 31 is disposed at the lower portion in the hanging wall 105. The upper connecting member 31 is fixed at the lower portion in the hanging wall 105 by the locking of the lower locking portion 35. That is, the upper end portion 30 a of the connection tool 30 is fixed at the lower portion in the hanging wall 105. The upper end portion 31 a of the upper connection member 31 is disposed so as to be located below the central position 105 a in the vertical direction of the hanging wall 105. Accordingly, when the sealing tube 131 is removed and the bottom surface 101a of the tank body 100 is viewed, a part of the upper connection member 31 is hidden by the upper end edge 103a of the drainage hole 103, and the connection tool 30 is exposed and is difficult to see. Moreover, it is preferable that the inner peripheral surface 105b of the hanging wall 105 is formed along the vertical direction as illustrated. A part of the upper connection member 31 is easily hidden from the upper end edge 103a of the drainage hole 103, and the connection tool 30 can be further hardly seen.

  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 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 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 plurality of divided bodies 43 constituting the lower connection member 41 are moved in the radial direction of the drainage hole 103, the engaging portion 45 is inserted into and removed from the through hole 33a as the engaged portion, and the upper portion is removed by the insertion and removal. The connecting member 31 is detachably attached to the outer cylinder portion 33.

  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 At this time, the coupling body 111 and the peripheral edge 109 are sandwiched and fixed by the connector 30. That is, the connection tool 30 can attach a part of the drainage device 110 to the lower part, and the annular portion 42b of the lower connection member 41 can be attached by fixing a part of the drainage device 110 by sandwiching. It is provided as.

  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.

  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 connection tool 30 and the sealing tube 131 are inserted into the drainage hole 103 in a nested structure in which the outer tube portion 33 of the connection device 30 is an outer tube and the inner tube portion 133 of the sealing tube 131 is an inner tube. 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. The upper connecting member 31 has its upper end portion 31 a and the inner peripheral surface of the outer cylindrical portion 33 covered with the upper locking portion 135 and the inner cylindrical portion 133 of the sealing tube 131. In other words, the upper locking portion 135 is located above the locking portion between the step surface 108 of the drainage hole 103 as a stepped hole and the lower locking portion 35 of the upper connection member 31, and the upper end of the upper connection member 31. It arrange | positions in the drain hole 103 so that the part 31a may be coat | covered. Further, as described above, the sealing cylinder 131 has a nested structure in which the outer cylinder portion 33 of the connector 30 is an outer cylinder and the inner cylinder portion 133 of the sealing cylinder 131 is an inner cylinder. The peripheral surface is covered with the inner tube portion 133 of the water seal tube 131. As a result, the upper connection member 31 has an exposed portion inside the tank body 100 covered with the sealing cylinder 131, and the range that is exposed on the bottom surface 101a of the tank body 100 is significantly reduced.

  The upper locking portion 135 is disposed in the drain hole 103 so as to cover the inner peripheral surface 105 b of the hanging wall 105. The upper locking portion 135 is formed such that its outer peripheral surface 135a is along the inner peripheral surface 105b of the hanging wall 105, and its outer peripheral surface 135a is disposed to face the inner peripheral surface 105b of the hanging wall 105, The inner peripheral surface 105b of 105 is covered. When the bottom surface 101a of the tank body 100 is viewed, the range in which the inner peripheral surface 105b of the hanging wall 105 is exposed is significantly reduced. Further, a gap between the hanging wall 105 and the upper locking portion 135 is suppressed, and it is difficult for fine dust to collect between them.

  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 105 b of the hanging wall 105. When water flows along with dust in the tank body 100 toward the drain hole 103, a step in which dust accumulates hardly occurs in the flowing water path from the bottom surface 101a of the tank body 100 to the inside of the drain hole 103. In addition, although the upper end position of the upper locking part 135 is provided at a distance from the upper end edge 103a of the drain hole 103 in the drawing, the upper end position is aligned with the upper end edge 103a of the drain hole 103. It may be provided.

  The sealing cylinder 131 has a tapered surface 131b formed on the upper surface thereof. The tapered surface 131b is formed in a conical shape that is tapered without any irregularities on the way from the upper side to the lower side. The sealing cylinder 131 is provided with a cylindrical surface 131c on the inner side. The cylindrical surface 131c is provided so as to be continuously connected up and down below the tapered surface 131b, and is formed as a curved surface extending in a straight line without a step in the vertical direction. The tapered surface 131 b is formed so that the gradient thereof is larger than the gradient of the bottom surface 101 a of the tank body 100 around the drain hole 103. When the bottom surface 101a of the tank body 100 is viewed, the range in which the tapered surface 131b appears to be exposed is reduced. The slope of the tapered surface 131b may be, for example, 45 ° or more and less than 90 ° with respect to the horizontal plane.

  The upper locking portion 135 is provided with an outer peripheral surface 135a and a tapered surface 131b that is an inner peripheral surface inclined with respect to each other, and the outer peripheral surface 135a and the tapered surface 131b provide a corner portion 135b at the upper end portion thereof. It is done. Since the outer peripheral surface 135a of the upper locking portion 135 covers the inner peripheral surface 105b of the hanging wall 105 after the corner portion 135b is provided, the outer periphery of the upper locking portion 135 is disposed inside the tank body 100. The surface 135a is not exposed, and only the inner peripheral surface of the upper locking portion 135 is exposed. When the bottom surface 101a of the tank body 100 is viewed, the sealing tube 131 has a clean appearance.

  According to the above connection structure 10, the connection tool 30 that functions as a base is fixed at the lower part in the hanging wall 105. For this reason, when the sealing cylinder 131 is removed and the bottom surface 101a of the tank body 100 is viewed, a part of the connection tool 30 is easily hidden by the upper end edge 103a of the drainage hole 103, and there is a range where the connection tool 30 can be exposed. Get smaller. Therefore, it becomes difficult to see the connection tool 30 on the bottom surface 101a of the tank body 100, and even when the drainage device 110 is connected to the tank body 100 by the connection tool 30, the appearance around the drain hole 103 of the tank body 100 becomes clean and higher. Design can be realized.

  Further, a sealing tube 131 as a cover body is disposed so as to cover the inner peripheral surface 105 b of the hanging wall 105 and the connector 30. For this reason, when the bottom surface 101a of the tank body 100 is viewed, the range in which the hanging wall 105 and the connection tool 30 appear to be exposed is greatly reduced, and the appearance around the drain hole 103 of the tank body 100 is made cleaner. Moreover, since the drooping wall 105 and the connection tool 30 are covered with the sealing tube 131, a gap between them is suppressed, and the dust collection portion is reduced, so that the area around the drain hole 103 can be easily cleaned.

  Further, the water sealing tube 131 is formed so as to fit below the upper end edge 103 a of the drain hole 103 while covering the inner peripheral surface 105 b of the hanging wall 105. Therefore, it becomes difficult to produce a step where dust accumulates in the flow path from the bottom surface 101a of the tank body 100 to the inside of the drain hole 103, and the area around the drain hole 103 can be easily cleaned by reducing the number of dust pools, thereby realizing higher functionality. it can.

  In addition, since the cover body is the water seal tube 131, the function around the water seal tube 131 can be exhibited, the appearance around the drain hole 103 can be made clear as described above, and further, the effect of reducing the number of dust collecting portions can be exhibited.

  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. 7 shows the connection structure 10 of the drainage device 110 according to the second embodiment. In the second embodiment, the configuration of the drainage device 110 and the configuration of the sealing tube 131 are mainly different. First, the difference in the configuration of the drainage device 110 will be described. In the following embodiments, the same elements as those described in the first embodiment are denoted by the same reference numerals, and redundant description is omitted.

  The drainage device 110 further includes a water wheel unit 150 and an impeller unit 160. The water turbine unit 150 includes a water wheel housing 151 connected to the lower part of the main body 121. In the water turbine housing 151, water in the storage chamber 151 a is connected to an inflow pipe (not shown) that allows water to flow into the storage chamber 151 a provided therein, and a faucet (not shown) that discharges water into the tank body 100. Is connected to an outflow pipe 153 for discharging the water. In the water turbine housing 151, a water wheel 155 is stored in a storage chamber 151a therein. The water turbine unit 150 is configured as a rotation driving device that rotates the water wheel 155 in the storage chamber 151a in a certain direction by the flow of water discharged from the faucet.

  The impeller unit 160 includes a rotation shaft 161 and an impeller 163. The rotating shaft 161 is disposed along the axial direction of the drain hole 103. The rotating shaft 161 is rotatably held around its axis by a cylindrical bearing portion 139 provided on the water sealing tube 131 and a bearing (not shown) provided on the bottom surface of the main body 121. The rotating shaft 161 is provided with a plurality of magnets 161 a at the lower end thereof with a space in the circumferential direction around the rotating shaft 161. The plurality of magnets 161 a of the rotating shaft 161 are magnetically coupled to the plurality of magnets 155 a that are provided in the water turbine unit 150 and can rotate integrally with the rotation of the water wheel 155. When the water wheel 155 as the rotation driving device rotates, the rotational force is transmitted to the rotation shaft 161 through the magnetic coupling, and the rotation shaft 161 is driven to rotate in synchronization with the rotation of the water wheel 155.

  The impeller 163 is disposed above the drain hole 103. The impeller 163 is detachably attached to the upper end of the rotating shaft 161 and is provided so as to be rotatable integrally with the rotating shaft 161. The impeller 163 includes a plurality of rotating blades 163 a that are disposed above the tapered surface 131 b that is the upper surface of the sealing tube 131 and that are spaced apart in the circumferential direction around the rotating shaft 161. When the impeller 163 rotates, the water that has flowed up to the upper surface of the sealed water tube 131 is pushed out radially outward by each rotary blade 163a. At this time, a vortex flow is generated in the water pushed out by the rotation of each rotary blade 163a, and the vortex flow strikes the bottom surface of the tank body 100, and dirt such as slime adhering to the bottom surface is removed to obtain a cleaning effect. . The pushed-out water mainly flows into the sealing cylinder 131 through a water passage hole 163b provided in a vertical direction through a portion closer to the center of the impeller 163 than the rotary blade 163a.

  Here, in the connection structure 10 according to the present embodiment, as shown in FIG. 8, the slope of the tapered surface 131 b formed on the upper surface of the water seal tube 131 is extremely gentle compared to the first embodiment. ing. This is to make it easier to hold the water that has flowed up to the upper surface of the sealing tube 131 and to push the water outward in the radial direction by the rotary blades 163a. In the example shown in the drawing, the slope of the tapered surface 131 b is provided to match the slope of the bottom surface 101 a of the tank body 100 around the drain hole 103. Further, the upper surface of the sealing tube 131 may be provided in parallel to the horizontal plane without providing the tapered surface 131b.

[Third Embodiment]
Next, not a drainage device connection structure, but a pipe joint that connects the drainage pipe of the drainage device and the sewage pipe will be described.

  The discharge pipe and the sewer pipe of the drainage device are usually arranged in a state where there is a misalignment such that their axial positions are shifted in the direction perpendicular to the axis. The degree of misalignment and the distance between the discharge pipe and the sewage pipe may vary depending on the construction site. For this reason, in order to cope with this misalignment and change in distance, the drainage device and the sewer pipe are usually connected by a flexible bellows hose.

  Here, the drainage device and the sewage pipe through which drainage flows may be clogged and washed with high pressure to remove dirt. When the drainage pipe of the drainage device and the sewage pipe are connected by a soft bellows hose, there is a problem that the bellows hose is easily broken by this high pressure washing and is not suitable for high pressure washing.

  Therefore, in the following, a pipe joint suitable for high-pressure cleaning is proposed, in response to the misalignment of the drain pipe and the sewer pipe of the drainage device and the change in distance.

  FIG. 9A shows a pipe joint 70 according to the third embodiment, and FIG. 10 shows a use state of the pipe joint 70. As shown in FIG. 10, the pipe joint 70 connects the discharge pipe 125 and the sewage pipe 171 of the drainage device 110. The discharge pipe 125 discharges water through the drainage device 110. The lower end of the tank body 100 is provided with one end 171a protruding upward from the floor surface 173, and the other end is connected to the sewer.

  The pipe joint 70 includes an introduction pipe 71, a main body pipe 73, and a lead-out pipe 79. The main body pipe 73 includes a first connection pipe 75 provided on one end side (upper side in the figure) and a second connection pipe 77 provided on the other end side (lower side in the figure). Each tube is made of a hard material having no flexibility such as resin.

  One end 71a of the introduction pipe 71 is connected to the discharge pipe 125 using a fastener 149 or the like. As shown in FIG. 9A, the introduction pipe 71 is provided with a concave inner spherical surface 71c at the other end 71b. The first connecting pipe 75 is provided with a convex outer spherical surface portion 75b at one end portion 75a thereof. The first connecting pipe 75 has an outer spherical surface portion 75 b accommodated in an inner spherical surface portion 71 c of the introducing tube 71, and one end portion 75 a thereof is connected to the introducing tube 71.

  A male screw portion 71e is provided on the outer peripheral surface of the inner spherical surface portion 71c of the introduction pipe 71, and a female screw portion 81a provided in the first fixing ring 81 is screwed into the male screw portion 71e. The first fixing ring 81 is provided with a stopper surface 81b facing the front end surface of the inner spherical surface portion 71c, and a first wedge body 82 is disposed between the front end surface of the inner spherical surface portion 71c and the stopper surface 81b. .

  The first wedge body 82 is formed in an annular shape so as to be pointed away from the stopper surface 81b. The first wedge body 82 is screwed with the female threaded portion 81a of the first fixing ring 81 into the male threaded portion 71e of the introduction pipe 71, and when the distal end surface of the inner spherical surface portion 71c and the stopper surface 81b approach each other, the first wedge body 82 It press-fits between the spherical surface portions 75b. When the press-fitting of the first wedge body 82 is released, the outer spherical surface portion 75b of the first connecting tube 75 can rotate within the inner spherical surface portion 71c of the introduction tube 71. When the first wedge body 82 is press-fitted, the first connection pipe 75 cannot rotate in the introduction pipe 71, and the main body pipe 73 is fixed to the introduction pipe 71. Further, by the press-fitting of the first wedge body 82, the first wedge body 82 functions as a seal member, and the space between the introduction pipe 71 and the first connection pipe 75 is sealed.

  The other end 75 c of the first connection pipe 75 is inserted inward from the one end 77 a of the second connection pipe 77. The one end portion 77a of the second connection pipe 77 is provided with a male screw portion 77b on its outer peripheral surface, and a female screw portion 83a provided on the second fixing ring 83 is screwed into the male screw portion 77b. The second fixing ring 83 is provided with a stopper surface 83b opposite to one end surface of the second connecting pipe 77, and a second wedge body 84 is disposed between the one end surface and the stopper surface 83b.

  The second wedge body 84 is formed in an annular shape so as to be pointed away from the stopper surface 83b. The second wedge body 84 is screwed into the male threaded portion 77b of the second connecting pipe 77 with the female threaded portion 83a of the second fixing ring 83, and when the one end surface of the second connecting pipe 77 and the stopper surface 83b approach each other, It is press-fitted between the outer peripheral surface of the pipe 75 and the inner peripheral surface of the second connection pipe 77. When the press-fitting of the second wedge body 84 is released, the second connection pipe 77 can slide in the axial direction of the first connection pipe 75. When the second wedge body 84 is press-fitted, the second connection pipe 77 cannot be slid into the first connection pipe 75 and the first connection pipe 75 and the second connection pipe 77 are fixed. In addition, the second wedge body 84 functions as a sealing member by the press-fitting of the second wedge body 84, and the space between the first connection pipe 75 and the second connection pipe 77 is sealed.

  The outlet tube 79 is provided with a concave inner spherical surface 79b at one end 79a. The second connecting pipe 77 is provided with a convex outer spherical surface 77e at the other end 77d. In the lead-out tube 79, the outer spherical surface 77e of the second connection tube 77 is accommodated in the inner spherical surface portion 79b, and one end portion 79a is connected to the second connection tube 77.

  The inner spherical surface portion 79b of the outlet pipe 79 is provided with a male screw portion 79c on the outer peripheral surface thereof, and a female screw portion 85a provided on the third fixing ring 85 is screwed into the male screw portion 79c. The third fixing ring 85 is provided with a stopper surface 85b facing the front end surface of the inner spherical surface portion 79b, and a third wedge body 86 is disposed between the front end surface of the inner spherical surface portion 79b and the stopper surface 85b. .

  The third wedge body 86 is formed in an annular shape so as to be pointed away from the stopper surface 85b. The third wedge body 86 is screwed with the female threaded portion 85a of the third fixing ring 85 into the male threaded portion 79c of the outlet pipe 79, and when the tip surface of the inner spherical surface portion 79b approaches the stopper surface 85b, the inner surface of the inner spherical surface portion 79b. And the outer spherical surface portion 77e. When the press-fitting of the third wedge body 86 is released, the outer spherical surface portion 77e of the second connecting tube 77 can rotate within the inner spherical surface portion 79b of the outlet tube 79. When the third wedge body 86 is press-fitted, the second connecting pipe 77 cannot be rotated in the outlet pipe 79 and the outlet pipe 79 is fixed to the main body pipe 73. Further, by press-fitting the third wedge body 86, the third wedge body 86 functions as a seal member, and the space between the second connecting pipe 77 and the outlet pipe 79 is sealed.

  The lead-out pipe 79 is provided with a plurality of cylindrical fitting recesses 80 (two in the drawing) concentrically provided so as to open downward at the other end 79e and to be recessed upward. For example, the end portion of the sewage pipe 171 having a relatively small outer diameter and inner diameter is fitted into the fitting recess 80 on the inner peripheral side. The end portion of the sewage pipe 171 having a larger outer diameter and inner diameter and different dimensions than the sewage pipe 171 having a smaller outer diameter and inner diameter is fitted into the fitting recess 80 on the outer peripheral side. That is, the end portions of the sewer pipes 171 having different types of dimensions can be fitted into the plurality of fitting recesses 80. Among the plurality of fitting recesses 80, the innermost fitting recess 80 is a part of the flow path of water flowing from the drainage device 110 to the sewer pipe 171 by the inner surface of the peripheral wall 80a that forms the inner peripheral surface thereof. Is formed.

  An example of a method of using the pipe joint 70 according to the above embodiment will be described. As shown in FIG. 10, the case where the axial center positions of the discharge pipe 125 and the sewage pipe 171 of the drainage device 110 are shifted in the horizontal direction is considered.

  First, the introduction pipe 71 is removed from the main body pipe 73 of the pipe joint 70, and one end portion 71 a of the introduction pipe 71 is connected to the discharge pipe 125. Then, the main body pipe 73 of the pipe joint 70 is connected to the other end 71 b of the introduction pipe 71. At this time, the screws of the fixing rings 81, 83, 85 are loosened. In this state, the outlet pipe 79 is moved in the horizontal direction or the vertical direction, and the end of the sewage pipe 171 is fitted into the fitting recess 80 of the outlet pipe 79. At this time, since the screws of the first fixing rings 81, 83, 85, etc. are loosened, the main body pipe 73 rotates with respect to the introduction pipe 71 and the outlet pipe 79 rotates with respect to the main body pipe 73. Thus, the angle of each tube is adjusted. Further, the second connection pipe 77 slides with respect to the first connection pipe 75, and the distance between the introduction pipe 71 and the outlet pipe 79 is adjusted. Even if the axial centers of the discharge pipe 125 and the sewage pipe 171 are displaced in the horizontal direction by adjusting the angle of each pipe or the distance between the introduction pipe 71 and the outlet pipe 79, they can be connected regardless of the deviation.

  When the end of the sewage pipe 171 is fitted into the fitting recess 80 of the outlet pipe 79, the fixing rings 81, 83, and 85 are tightened to fix the angle and distance of each pipe. When the second connection pipe 77 is slid with respect to the first connection pipe 75, the first connection pipe 75 may be too long to reduce the distance between the introduction pipe 71 and the outlet pipe 79. In this case, as shown in FIG. 10B, if the range from the other end portion 75c of the first connection pipe 75 to a part is cut as necessary, and the first connection pipe 75 is shortened, the introduction pipe 71 is obtained. And the outlet pipe 79 can be reduced.

  According to the pipe joint 70 according to the above embodiment, the angle of each pipe and the distance between the introduction pipe 71 and the outlet pipe 79 can be adjusted. Therefore, even if the misalignment or distance between the discharge pipe 125 and the sewage pipe 171 changes depending on the construction site, the discharge pipe 125 and the sewage pipe 171 can be connected in response to the change. Further, since the discharge pipe 125 and the sewage pipe 171 are connected by a plurality of hard pipes that are not flexible, they can withstand high-pressure washing.

  Further, since the plurality of fitting recesses 80 are provided on the other end side of the outlet pipe 79, it is not necessary to use a pipe joint 70 having a different size according to the size of the sewer pipe 171, and a single pipe joint 70 is provided. It can be used for various sizes of sewage pipes 171.

  Moreover, a part of the flow path of the water which flows from the drainage device 110 to the sewer pipe 171 by the inner surface of the peripheral wall part 80a which forms the inner peripheral surface of the innermost peripheral fitting concave part 80 among the plurality of fitting concave parts 80. Is formed. Therefore, even if the seals between the pipes are insufficient, there is no place where water accumulates due to the flow of water from the drainage device 110 to the sewage pipe 171, and water passes between the fitting recess 80 and the sewage pipe 171. Is difficult to leak.

  Note that an outer spherical surface portion may be provided at the other end portion 71 b of the introduction pipe 71 and an inner spherical surface portion may be provided at the one end portion 75 a of the first connection pipe 75. In any case, it is only necessary that an outer spherical surface portion is provided on one of the opposite ends of the introduction pipe 71 and the first connection pipe 75 and an inner spherical surface portion is provided on the other, and these are rotatably connected. . Moreover, these may be connected by a well-known universal joint so that rotation is possible.

  Further, an inner spherical surface portion may be provided at the other end portion 78 c of the second connection pipe 77, and an outer spherical surface portion may be provided at the one end portion 79 a of the outlet pipe 79. In any case, it is only necessary that an outer spherical surface portion is provided on one of the end portions of the outlet tube 79 and the second connecting tube 77 facing each other and an inner spherical surface portion is provided on the other, and these are rotatably connected. Moreover, these may be connected by a well-known universal joint so that rotation is possible.

  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 embodiment has been described as a drainage trap using the sealing cylinder 131, the drainage device 110 may not use the sealing cylinder 131, and may be a drain 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 connect using a 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. As long as the drainage hole 103 is formed as a stepped hole, the hanging wall 105 and the engagement wall 107 may not be included. The peripheral edge 109 and the coupling body 111 of the drain hole 103 may be arranged so as to overlap with each other with a spacer disposed between them.

  Although the sealing cylinder 131 has been described as the cover body, the cover body may be provided separately from the sealing cylinder 131.

  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, but these may be provided integrally. Although the attachment part 47 of the lower side connection member 41 demonstrated the example which fixed the drainage device 110 so that attachment or detachment was possible by pinching, you may fix the drainage device 110 so that attachment or detachment is possible by screwing in and fitting.

DESCRIPTION OF SYMBOLS 10 Connection structure, 30 connection tool, 30a upper end part, 31 upper connection member (1st connection member), 31a upper end part, 33 outer cylinder part, 35 lower side latching part, 37 fitting convex part, 41 lower connection member ( (Second connecting member), 43 divided body, 45 engaging portion, 50 upper seal member (first seal member), 60 lower seal member (second seal member), 100 tank body, 101 bottom surface portion, 103 drainage hole, 103a Upper edge, 103b Lower edge, 105 Hanging wall, 107 Engagement wall, 109 Peripheral part, 110 Drainage device, 111 Connection body, 112 Fixed part, 113 Upper fitting part, 115 Lower fitting part, 121 Main body, 123 Outlet, 125 discharge pipe, 129 O-ring, 131 sealed cylinder (cover body), 133 inner cylinder part, 133b cylinder side fitting part, 135 upper locking part, 137 packing, 139 shaft Department, 150 waterwheel unit, 151 waterwheel housing, 153 outlet pipe, 155 waterwheel, 155a magnets, 160 impeller unit, 161 rotary shaft, 161a magnets, 163 impeller

Claims (5)

A drainage device connected to the bottom of the tank body,
Drainage holes formed in the bottom surface,
A connector capable of connecting the drainage device to the drainage hole,
The drainage hole is formed with a hanging wall that hangs downward on the inner periphery,
The drainage device connection structure, wherein the connection tool is fixed at a lower portion in the hanging wall.   The drainage device connection structure according to claim 1, further comprising a cover body arranged in the drainage hole so as to cover an inner peripheral surface of the hanging wall and the connection tool.   The drainage device connection structure according to claim 2, wherein the cover body is formed to be lower than an upper end edge of the drainage hole.   The drainage device connection structure according to claim 2 or 3, wherein the cover body is a sealed tube inserted into a bottomed cylindrical main body constituting the drainage device. A drainage device connected to the bottom of the tank body,
Drainage holes formed as stepped holes in the bottom surface,
The upper part is locked to the step surface of the drainage hole, and a connector that can attach the drainage device to the lower part,
A cover body disposed in the drainage hole so as to cover the connection tool above the engagement portion between the stepped surface and the connection tool,
The connection device and the cover body are inserted into the drainage hole in a nested structure in which the connection device is an outer cylinder and the cover body is an inner cylinder.

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