JP2012184547A - Drain pipe connection structure of sink bowl - Google Patents

Abstract

Disclosed is a drainage pipe connection structure for a sink that can securely connect a drainage hole of a sink and a drainage device so that the drainage pipe cannot be seen from above the sink.
To attach a connecting pipe 7 to a drain hole 3, a stopper 5 is fitted inside a union nut 6, and the stopper 5 and the union nut 6 are fitted outside the drain hole 3 and pushed upward. The stopper 5 is engaged with the groove 4. Next, the connecting pipe 7 to which the packing 8 is attached is opposed to the lower end surface of the drain hole 3 and the male screw 7e and the female screw of the union nut 6 are engaged, and then the union nut 6 is rotated to connect the connecting pipe 7 Raise 7 When the union nut 6 continues to be rotated, the packing 8 is pressed against the lower end surface of the drain hole 3, and then the ridge 7 f comes into contact with the lower end surface of the drain hole 3, so that the connecting pipe 7 is watertight to the drain hole 3. Connected to
[Selection] Figure 2

Description

  The present invention relates to a structure in which drainage holes and drainage pipes of sinks such as washbasins, hand-washing basins and cleaning sinks are connected, and in particular, drainage pipe connection structure suitably employed when the sink is made of ceramics. About.

  To connect the drainage port of a sink, such as a basin, hand-washer, and cleaning sink, and a drainpipe, an adapter with a flange (tubular body) is inserted into the drainage port from above, and the flange at the upper end of the adapter is connected to the drainage port. It is widely practiced to engage the upper edge of the adapter, tighten a nut on the adapter from below, fix the adapter to the basin or hand basin, and connect a drain pipe to the adapter.

  In this connection structure, since the flange is exposed in a bowl such as a wash basin or a hand wash basin, the appearance may be deteriorated due to accumulation of dust at the boundary between the flange and the bowl or corrosion of the flange.

  In order to solve such disadvantages, a short cylindrical drainage hole projecting downward from the bottom of the sink basin, this drainage hole is flushed and inserted into the drainage device on the basin side from above, and sealed with packing 1.

  Patent Document 2 describes that a flange is provided below the drain port of the stainless sink, a flange of a drain pipe is brought into contact with the flange, and both are connected by a lock nut.

4-126974 JP2007-255028

  In the connection structure between the drain hole and the drainage device of Patent Document 1, if a large downward force is applied to the drainage device, the drainage device may come off the drainage hole.

  Patent Document 2 can be applied when the sink is made of stainless steel, but the conventional ceramic pot does not have a heel portion, so the structure of Patent Document 2 cannot be adopted.

  It is an object of the present invention to provide a drainage pipe connection structure for a sink that can securely connect the drainage hole of the sink and the drainage device so that the drainage pipe cannot be seen from above the sink. To do.

  The drainage pipe connection structure for a sink according to the present invention (Claim 1) includes a sink with a cylindrical drainage hole projecting downward from the bottom, and a connection pipe provided so as to continue to the drainage hole. And a stopper provided on the outer peripheral surface of the drain hole, and a stopper attached to the latch, and the connecting pipe is connected to the drain hole via the stopper. It is characterized by being.

  The drainage pipe connection structure of a sinker according to claim 2 is the drainage pipe connection structure according to claim 1, wherein the sinker is made of ceramics, the locking part circulates around an outer periphery of the drainage hole part, and the stopper has a circumferential direction This is characterized in that a part of the shape is cut out.

  A drainage pipe connection structure for a sink according to claim 3 is the drainage pipe connection structure according to claim 1 or 2, wherein the stopper is provided with a protrusion extending in the circumferential direction on at least one of the lower surface and the upper surface on the outer peripheral side. The strip is in contact with the outer peripheral surface of the drain hole along the groove.

  According to a fourth aspect of the present invention, there is provided a drainage pipe connection structure for a sink pot according to any one of the first to third aspects, wherein a male screw is provided on an upper outer peripheral surface of the connection pipe, and the drainage pipe is engaged with a stopper. A union nut is provided which is locked to the hole and includes a female screw threadedly engaged with the male screw of the connecting pipe, and the connecting pipe is connected to the drain hole through the union nut. It is characterized by being.

  The drainage pipe connection structure for a sink pot according to claim 5 is the drainage pipe connection structure according to claim 4, wherein the union nut has an inward flange at its upper end, and the inner peripheral surface of the inward flange is closer to the upper side. It is characterized by a stepped or tapered shape with a small diameter.

  The drainage pipe connection structure of a sink pot according to a sixth aspect is characterized in that, in the fourth or fifth aspect, the union nut is provided with a slit into which the stopper is inserted.

  The drainage pipe connection structure of a sink pot according to claim 7 is characterized in that, in claim 6, a low step portion for inserting a tool into the slit when the stopper is extracted from the slit is provided at an outer edge portion of the stopper. It is a feature.

  The drainage pipe connection structure of the sink pot according to claim 8 is the gasket according to any one of claims 4 to 7, wherein packing is interposed between the upper end portion of the connection pipe and the lower end surface of the drainage hole portion, The upper end portion of the connecting pipe is provided with a ridge that is in contact with the lower end surface of the drain hole.

  The drain pipe connection structure for a sink pot according to claim 9 is the drain pipe connection structure according to any one of claims 1 to 3, wherein an upper end of the connection pipe is located above the locking portion, and an upper end of the connection pipe A slit is provided in the vicinity, and the stopper is inserted into the slit and engaged with the locking portion.

  In the drainage pipe connection structure of the sink pot of the present invention, a stopper is engaged with a locking part such as a groove provided in the drainage hole, and the connection pipe is connected to the drainage hole via the stopper. Therefore, even if the bowl is made of ceramic, the connecting pipe can be firmly connected to the drain hole.

  Even if there is a dimensional tolerance in the drain hole, the stopper can be used as a locking part such as a groove by arranging a groove around the drain hole and cutting the circumferential part such as a C-ring. It can be attached securely.

  A protrusion is provided on the lower or upper surface on the outer peripheral side of the stopper, and this protrusion is brought into contact with the outer peripheral surface of the drain hole portion, so that the mounting posture of the stopper becomes stable.

  In the present invention, the union nut is locked to the stopper, and the union nut is screwed onto the upper part of the connecting pipe, whereby the connecting pipe is pulled upward to firmly connect the connecting pipe and the drain hole. it can. It is also possible to interpose a packing between the connection pipe and the lower end surface of the drainage hole, and to clamp the pressure between the packing, the connection pipe and the drainage hole, and to connect them both in a watertight manner.

  Thus, when using packing, a convex part is provided in a connection pipe upper end, and it can prevent that packing is clamped too strongly by making this convex part contact | abut to the lower end surface of a drainage hole part.

  When the union nut is used, an inward flange portion may be provided on the upper portion of the union nut, and the inner peripheral surface of the inward flange portion may be stepped or tapered with a smaller diameter toward the upper side. In this way, even if the diameter of the drain hole is relatively large due to dimensional tolerances, the inward flange can be engaged with the stopper. In addition, when the inner peripheral surface of the inward flange is tapered, it is easy to center the connection pipe and the drain hole.

  In one aspect of the present invention, a slit is provided in the union nut, and the stopper is engaged with a locking portion such as a groove of the drain hole through the slit. Further, in another aspect of the present invention, the union nut is omitted, the connection pipe is extended upward from a locking part such as a groove, a slit is provided on the upper part of the connection pipe, and the stopper is drained through the slit. Engage with the locking portion of the hole. According to these aspects, it is possible to mount the stopper after the union nut or the drain pipe is engaged with the drain hole.

  In the case of these aspects, if a low step portion for inserting a tool is provided on the outer edge portion of the stopper, it is easy to pull out the stopper inserted into the slit.

It is a longitudinal cross-sectional view which shows the drain pipe connection structure of the pot which concerns on embodiment. It is a one part enlarged view of FIG. It is sectional drawing of the drain hole part of a hand-washing machine. It is the top view and sectional drawing of a stopper. It is sectional drawing of a connecting pipe. It is sectional drawing which shows another example of a stopper. It is sectional drawing which shows another example of a stopper. It is sectional drawing of the union nut and drain hole part vicinity which concern on another embodiment. It is sectional drawing of the union nut and drain hole part vicinity which concern on another embodiment. It is sectional drawing of the drain hole vicinity vicinity which concerns on another embodiment. It is a perspective view of the union nut and stopper used for another embodiment. It is a top view of the union nut and stopper of FIG. It is a top view of the stopper and union nut which are used for another embodiment. It is sectional drawing of the drain hole vicinity vicinity which shows the example of another shape of packing. It is sectional drawing of the drain hole which shows another shape of a groove | channel. It is sectional drawing of the drain hole vicinity vicinity which shows different embodiment.

  Hereinafter, embodiments will be described with reference to the drawings.

  1 to 5 show a first embodiment. As shown in FIGS. 1 and 2, a short cylindrical drainage hole 3 protrudes downward from the bottom surface of the pot portion 2 of the pottery hand-washing device 1. A groove 4 as a locking portion is provided on the outer periphery of the drain hole 3, and a stopper 5 is attached to the groove 4. A union nut (cap nut) 6 is locked to the stopper 5, and the connecting pipe 7 is connected to the drain hole 3 by the union nut 6. A packing 8 is interposed between the lower end surface of the drain hole 3 and the upper end surface of the connection pipe 7.

  As shown in an enlarged view in FIG. 3, the groove 4 circulates around the outer peripheral surface of the drain hole 3.

  As shown in FIGS. 4 (a) and 4 (b), the stopper 5 is a C-shape having a slit portion 5a formed by cutting off a part of the ring in the circumferential direction. By expanding the slit portion 5a, the stopper 5 is formed. It can be fitted in the groove 4 by being fitted around the drain hole 3. In this embodiment, a ridge 5 b is projected from the lower surface on the outer peripheral side of the stopper 5. The ridges 5b extend along the entire outer periphery of the stopper 5. The inner peripheral surface of the ridge 5b is in contact with the outer peripheral surface on the lower edge side of the groove 4 of the drain hole 3, so that the mounting posture of the stopper 5 to the drain hole 3 is stabilized.

  As shown in FIG. 2, the union nut 6 is provided with an inward flanged portion 6 a at the upper end portion, and a female screw (not shown) is provided on the inner peripheral surface below the flanged portion 6 a.

  As shown in FIG. 5, the connecting pipe 7 is provided in a straight pipe portion 7a, a tapered portion 7b that is continuous with the upper end of the straight pipe portion 7a, and expands upward, and has a flange shape outward from the tapered portion 7b. The flange portion 7c, the annular wall portion 7d that circulates around the outer peripheral edge of the flange portion 7c, the male screw 7e provided on the outer peripheral surface of the annular wall portion 7d, and the inner peripheral edge of the flange portion 7c. It has the protruding item | line part 7f projected upwards, and the recessed item part 7g between this protruding item | line part 7f and the cyclic | annular wall part 7d. The packing 8 is attached to the recess 7g.

  In order to attach the connecting pipe 7 to the drain hole 3, a stopper 5 is fitted inside the union nut 6, the stopper 5 and the union nut 6 are fitted outside the drain hole 3, and the stopper 5 is pushed upward. Engage with the groove 4. Next, the connecting pipe 7 to which the packing 8 is attached is opposed to the lower end surface of the drain hole 3 and the male screw 7e and the female screw of the union nut 6 are engaged, and then the union nut 6 is rotated to connect the connecting pipe 7 Raise 7 When the union nut 6 is continuously rotated, the packing 8 of the connecting pipe 7 is eventually pressed against the lower end surface of the drain hole 3, and then the protruding strip 7 f comes into contact with the lower end surface of the drain hole 3. As a result, the connection pipe 7 is connected to the drain hole 3 in a watertight and firm manner. In addition, since the protruding line part 7f contacts the lower end surface of the drain hole part 3, the packing 8 is not forcibly crushed any more.

  After connecting the connecting pipe 7 to the drain hole 3 in this way, the connecting pipe 7 and the drain pipe on the floor or wall are connected. This connection structure is the same as that of the prior art and is not particularly limited, but an example thereof is shown in FIGS. The inflow side of the J-shaped trap tube 10 is externally fitted to the connecting tube 7 from below. A male screw is provided on the outer peripheral surface of the trap tube on the inflow side, and a union nut 11 is screwed thereon. Between the inward flange of the upper end portion of the union nut 11 and the upper end of the inflow side of the trap tube 10. A ring-shaped packing 12 is interposed. When the union nut 11 is tightened into the trap tube 10, the ring-shaped packing 12 is reduced in diameter, and the connection tube 7 and the trap tube 10 are connected in a watertight manner. The outflow side of the trap pipe 10 is connected to a floor drain pipe (not shown) through an inverted J-shaped down pipe 15.

  A male screw is provided on the outer peripheral surface of the trap tube 10 on the outflow side, and a union nut 13 is screwed thereon. A ring-shaped packing 14 is interposed between the inward flange at the upper end of the union nut 13 and the upper end on the outflow side of the trap tube 10. When the union nut 13 is turned and tightened, the ring-shaped packing 14 is reduced in diameter, and the trap tube 10 and the falling tube 15 are connected in a watertight manner.

  In this embodiment, the connecting pipe 7 is connected to the drain hole 3 via the union nut 6 and the stopper 5, and the stopper 5 is engaged with the groove 4. The attachment strength to 3 is high. Further, the packing 8 is interposed between the flange portion 7c and the lower end surface of the drain hole portion 3, and the connection pipe 7 and the drain hole portion 3 are connected in a watertight manner. Since the projecting ridge portion 7f erected from the flange portion 7c contacts the lower end of the drain hole portion 3, the packing 8 is prevented from being pinched excessively strongly.

  Although the trap pipe 10 is connected to the floor drain pipe in FIG. 1, it may be connected to a wall drain pipe.

<Another embodiment>
In the above embodiment, the protrusion 5b is provided on the stopper 5, but the protrusion 5b may be omitted as in the stopper 5A of FIG. Moreover, you may use the stopper 5B by which the protruding item | line part 5b was provided in the upper surface side like FIG. In addition, the outer peripheral surface of the upper part of this protruding item | line part 5b is a taper surface which diameter-reduces upward.

  FIG. 8A is a cross-sectional view showing another example of the shape of the union nut, and FIGS. 8B and 8C are vertical cross-sectional views in the vicinity of the drain hole portion showing the use example.

  Locking step portions 6c and 6d are provided on the lower surface of the flange portion 6a of the union nut 6A in a stepped shape with a diameter increasing downward. The locking step 6c has a smaller diameter than the locking step 6d. Reference numeral 6b denotes a female screw on the inner peripheral surface of the union nut 6A.

  Generally, a ceramic bowl has a large dimensional tolerance, and a tolerance of about 6 mm at the maximum may occur in the outer diameter of the drain hole 3. When the diameter of the drain hole 3 is small, the stopper 5A is engaged with the locking step 6c as shown in FIG. 8B, and when the diameter is large, the stopper is provided on the locking step 6d as shown in FIG. 8C. 5A engages.

  FIG. 9A is a cross-sectional view of a union nut 6B in which the inner peripheral surface of the inward flange portion 6a is a tapered surface 6t whose diameter is increased downward. Due to the dimensional tolerance, when the diameter of the drain hole 3 is small, the stopper 5B engages with the upper portion of the tapered surface 6t as shown in FIG. 9B. When the diameter of the drain hole 3 is large, as shown in FIG. 9C, the stopper 5B engages with the lower portion of the tapered surface 6t.

  In the above embodiment, the stoppers 5, 5A, 5B are fitted in the union nuts 6, 6A, 6B in advance, but after the union nut 6C is fitted in the drain hole 3 as shown in FIGS. You may comprise so that the stopper 5C may be mounted | worn.

  10 is a longitudinal sectional view of the vicinity of the drain hole 3 using the stopper 5C and the union nut 6C, FIG. 11 is a perspective view of the stopper 5C and the union nut 6C, and FIGS. 12A and 12B are unions of the stopper 5C. It is a top view which shows the insertion method to the nut 6C.

  As shown in FIG. 11, the stopper 5C has a C-shape having two arc-shaped leg portions 5e and parallel leg portions 5f and 5f extending in parallel from the tips of the leg portions 5e and 5e. The inner peripheral surfaces of the leg portions 5e and 5e and the arch-shaped portion 5g connecting them are arc-shaped portions 5h. The arcuate portion 5h extends longer than the semicircular arc in the circumferential direction. A low step portion 5i is provided on the outer peripheral edge of the upper surface of the arch-shaped portion 5g.

  The union nut 6C is provided with slits 6e and 6f into which the stopper 5C is inserted. The slits 6e and 6f are arranged on opposite sides of the union nut 6C with respect to the axis.

  After the union nut 6C is fitted to the drain hole 3, the legs 5e and 5e are engaged with the groove 4 through the slit 6e as shown in FIGS. 12 (a) and 12 (b).

  After the stopper 5C is inserted into the union nut 6C until the entire arcuate portion 5h engages with the groove 4, the union nut 6C is rotated, and the packing 8 is placed on the lower end surface of the drain hole 3 as shown in FIG. The drain hole 3 and the connecting pipe 7 are connected by pressing. The low step portion 6i is for inserting the tip of a tool (not shown) when extracting the stopper 5C inserted into the slits 6e and 6f.

  Instead of the single C-shaped stopper 5C shown in FIGS. 10 to 12, a pair of semicircular stoppers 5D and 5D shown in FIG. 13 may be used. The stoppers 5D and 5D are attached to a union nut 6D having a pair of opposed slits 6g and 6g. Each stopper 5D has a semicircular arc-shaped inner peripheral surface 5j, and the inner peripheral surface 5j is inserted into the slit 6g so as to engage with the groove 4 (not shown in FIG. 13) of the drain hole 3. .

  After engaging the stopper 5D with the groove 4, the union nut 6D is turned to connect the connecting pipe 7 (not shown in FIG. 13) to the drain hole 3.

  In the above embodiment, the packing 8 has a flat annular shape. However, as shown in FIG. 14, a packing 8 </ b> A having a ridge 8 a on the upper surface on the outer peripheral side may be used. The ridges 8 a are in close contact with the outer peripheral surface of the lower end portion of the drain hole 3. If this packing 8A is used, the watertightness between the drain hole 3 and the connecting pipe 7 will be higher.

  In the present invention, as shown in FIG. 15, a groove 4 </ b> A having a flat lower surface 4 a may be provided on the outer peripheral surface of the drain hole portion 3. When the lower surface 4a is flat as described above, the stopper has a high locking strength with respect to the groove 4A.

  In any of the above embodiments, a union nut is used. However, in the present invention, the union nut is omitted as shown in FIG. 16, and the upper end of the connection pipe 7A is extended upward from the groove 4, and this connection pipe 7A is used. The connecting pipe 7 </ b> A may be connected to the drain hole 3 by inserting a stopper 5 </ b> C into the slits 7 s and 7 r provided at the upper ends of the upper ends of the upper and lower ends of the slits 7 s and 7 r.

  The connecting pipe 7A has a structure in which the connecting pipe 7 and the union nut 6C are integrated. 16 denote the same parts as those in FIG. Although the stopper 5C is used in FIG. 16, the pair of stoppers 5D shown in FIG. 13 may be used.

  The present invention can also be applied to a connection between a drainage hole and a connection pipe such as a washbasin other than a hand-washer and a cleaning sink.

1 Washing machine 2 Bowl part 3 Drain hole part 4, 4A Groove (locking part)
5, 5A, 5B, 5C, 5D Stopper 6, 6A, 6B, 6C Union nut 7 Connection pipe 8, 8A Packing

Claims (9)

A sink with a cylindrical drainage hole projecting downward from the bottom;
A connecting pipe provided to continue to the drain hole,
A locking portion provided on the outer peripheral surface of the drain hole,
A stopper attached to the locking portion;
A drainage pipe connection structure for a casting basin, wherein the connection pipe is connected to the drainage hole through the stopper. In Claim 1, the said pot is made of ceramics,
The locking portion circulates around the drain hole portion,
The stopper has a shape in which a part in the circumferential direction is cut off.   In Claim 1 or 2, the said stopper is provided with the protruding item | line extended in the circumferential direction in at least one of the lower surface and upper surface of an outer peripheral side, and this outer periphery surface of the said drain hole part along the said groove | channel A drainage pipe connection structure of a sink basin characterized by being in contact with In any one of Claims 1 thru | or 3, the external thread is provided in the upper outer peripheral surface of the said connecting pipe,
A union nut provided with a female screw engaged with the male screw of the connecting pipe is provided while being engaged with the drain hole by engaging with a stopper.
A drainage pipe connection structure for a sink pot, wherein the connection pipe is connected to the drainage hole through the union nut.   5. The union nut according to claim 4, wherein the upper end of the union nut has an inward flange, and the inner peripheral surface of the inward flange has a stepped or tapered shape with a smaller diameter toward the upper side. A drainage pipe connection structure for a sink.   6. A drainage pipe connection structure for a sink according to claim 4, wherein the union nut is provided with a slit into which the stopper is inserted.   7. The drainage pipe connection structure for a sink according to claim 6, wherein a low step portion for inserting a tool into the slit when the stopper is extracted from the slit is provided at an outer edge portion of the stopper. In any one of Claims 4 thru | or 7, the packing is interposed between the upper end part of the said connecting pipe, and the lower end surface of the said drain hole part,
A drainage pipe connection structure for a sink basin, characterized in that a projecting ridge part in contact with the lower end surface of the drainage hole is provided at the upper end of the connection pipe. In any 1 paragraph of Claims 1 thru / or 3, The upper end of the above-mentioned connecting pipe is located above the above-mentioned locking part,
A slit is provided near the upper end of the connecting pipe,
The drainage pipe connection structure of a sink pot, wherein the stopper is inserted into the slit and engaged with the locking portion.

Images