JP4517868B2 - Drain socket - Google Patents

Description

  The present invention relates to a drain socket for connecting a discharge port of a toilet body and a drain pipe connected to a sewer pipe.

  Regarding the drain socket, various devices have been devised to enhance the siphon action. For example, in Patent Document 1, the entire drainage socket is curved, and the drainage receiving surface for receiving the drainage flowing down to the inner surface of the lower part of the upper end opening of the socket channel, and the received drainage for guiding the received drainage inward. The content of forming the drainage guide surface is disclosed.

Further, Patent Document 2 discloses the contents that a washing water retention means is provided as a separate body at the upper part of the drain socket, and the washing water is temporarily retained in the washing water retention means to generate a siphon. Yes. In particular, the above effect is enhanced by gradually decreasing the flow passage cross-sectional area of the washing water retention means along the direction in which the washing water flows.
JP-A-8-326136 JP 2001-123514 A

  Fig.10 (a) is a figure which shows the general structure which connected the drainage pipe connected to the discharge port of a toilet bowl main body, and a sewer pipe by the drainage socket. As shown in FIG. 10A, conventionally, the distance between the toilet bowl and the wall surface has been increased to some extent in consideration of the rearward jump of the tank and the absorption of toilet manufacturing errors.

  Recently, however, the shape of the tank has been changed and the production accuracy of the toilet bowl itself has been improved. To widen the toilet space, as shown in FIG. 10 (b), the toilet bowl body is moved to the wall side, from the wall surface to the tip of the toilet bowl body. Attempts have been made to reduce the dimensions (above).

However, since the position of the drain pipe that opens on the floor of the toilet remains the same, if the toilet body is shifted rearward, the distance in the front-rear direction between the outlet of the toilet body and the drain pipe connected to the sewer pipe is further increased. As a result, the flow path in the drain socket becomes tight and the clogging of filth tends to occur.
Also, if the bending becomes tight, it becomes difficult to integrally mold the drain socket by injection molding, leading to an increase in cost.

  The contents disclosed in Patent Documents 1 and 2 disclose that siphon is effectively generated, but the distance in the front-rear direction between the outlet of the toilet body and the drain pipe connected to the sewer pipe is increased. There is no disclosure regarding how to deal with the case.

In order to solve the above problems, a drain socket according to the present invention includes an inflow portion into which a discharge port of a toilet body is inserted and connected, an outflow portion inserted into and connected to the drain pipe, and the inflow portion and the outflow portion. continuously provided between, and a socket channel you pass downwardly wastes from above, with reference to the longitudinal direction of the toilet body, the center of the socket channel continuous with said inlet portion, said inlet portion forward with respect to the center of, and has a configuration that is eccentric to the rear with respect to the center of the outlet portion.

  By adopting the above configuration, even if the distance in the front-rear direction between the outlet of the toilet body and the drain pipe connected to the sewer pipe is further increased, the substantial eccentric distance can be reduced, and siphons are effectively generated. Also, there is no clogging of dirt.

  It is preferable that a shelf is formed at the boundary between the rear end of the inflow portion and the socket flow path inlet. When this shelf is formed, water hits to prevent the inflow of air and siphon is effectively generated.

  Moreover, it is preferable that a drooping portion is formed at the front portion of the socket flow path outlet. If this hanging part is formed, intrusion of air from below is prevented and siphon is effectively generated.

  In addition, the front inner surface of the socket channel is formed by continuously forming an upper curved surface and a lower curved surface, the upper curved surface bulges inward of the socket channel, and the lower curved surface bulges out of the socket channel. Furthermore, it is preferable that the rear inner surface of the socket channel is shaped so that the whole bulges outward from the socket channel.

  By making the upper curved surface of the front inner surface of the socket channel bulge toward the inside of the socket channel to make a throttle shape, accumulation of air in the socket channel is prevented, and a stronger siphon is generated, It will last. In addition, the lower curved surface of the front inner surface of the socket channel bulges outward from the socket channel, so that even large dirt can pass through without clogging, and the entire rear inner surface of the socket channel can be By bulging toward the outside of the road, even if filth collides with the flow path, it flows smoothly, and the flow of washing water also becomes smooth, and siphon is easily induced.

According to the present invention, even when the distance in the front-rear direction (eccentric distance) between the trap drain of the flush toilet and the external water pipe is increased, clogging of filth in the drain socket is unlikely to occur. Therefore, the flush toilet can be brought closer to the rear wall than before, and the toilet space can be widened.
The drain socket according to the present invention can be integrally formed by injection molding by devising the mold shape.

  Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. 1 is a longitudinal sectional view of a flush toilet to which a drain socket according to the present invention is applied, FIG. 2 is a front view of the drain socket, FIG. 3 is a side view of the drain socket, and FIG. 4 is a plan view of the drain socket. 5 is a bottom view of the drain socket, and FIG. 6 is a longitudinal sectional view of the drain socket.

  The toilet body 1 is formed with a guide recess 3 for generating a swirling flow in the washing water along the upper edge of the ball portion 2 and a trap channel 4 is formed from the bottom of the ball portion 2 to the rear. The downstream end of the flow path 4 is a discharge port 5 of the toilet body, and the drain pipe 6 disposed and fixed on the floor surface and the discharge port 5 are connected by a drain socket 10 according to the present invention.

  The drain socket 10 forms standing parts 11 for fixing the toilet body 1 to the left and right. Further, the drain socket 10 includes an inflow portion 12 connected to the outlet 5 of the toilet body, an outflow portion 13 connected to the drain pipe 6, and a socket flow provided between the inflow portion 12 and the outflow portion 13. Road 14 is provided.

  As shown in FIG. 6, the center O2 of the socket flow path inlet 15 that is continuous with the inflow portion is decentered forward with respect to the center O1 of the inflow portion 12 with respect to the front-rear direction of the toilet body 1, and the outflow The center O3 of the socket flow path outlet 16 continuing to the portion 13 is eccentric rearward with respect to the center O4 of the outflow portion 13 with respect to the front-rear direction of the toilet body 1.

  In addition, a shelf 17 is provided at the rear of the lower end of the inflow portion 12 at the boundary with the socket channel inlet 15, and the inflow of air is prevented by applying washing water to the shelf 17. Further, a washing water retention member 18 is arranged in the inflow portion 12 so as to be locked to the shelf portion 17.

  FIG. 8 is a cross-sectional view of the cleaning water retention member 18, and FIG. 9 is a plan view of the cleaning water retention member 18. As shown in these drawings, the washing water retention member 18 has a substantially cylindrical shape, forms a throttle portion 19 in the middle, and forms a skirt portion 20 in the lower portion. A projection piece 21 for preventing clogging is attached, and a part of the skirt portion 20 is formed as a notch 22, and the notch 22 is engaged with a projection 23 provided on the shelf portion 17 for positioning.

  Returning to FIG. 6, a drooping portion 24 is provided at the front portion of the socket flow path outlet 13 to prevent the intrusion of air from below and enhance the siphon effect.

  Further, as shown in FIGS. 7A to 7C, the front inner surface of the socket flow path 14 is formed by continuously connecting an upper curved surface 14 a and a lower curved surface 14 b, and the upper curved surface 14 a is inward of the socket flow path 14. Bulges towards If the upper curved surface 14a bulges outward or is made straight as indicated by the imaginary line in FIG. 7A, the throttling effect is lost and an air pocket is formed, thereby causing the siphon to break.

  Further, the lower curved surface 14 b bulges outward from the socket channel 14. By bulging outward as described above, even large filth passes as shown in FIG. 7B without clogging.

  Further, the entire rear inner side surface 14 c of the socket channel 14 bulges outward from the socket channel 14. By bulging the rear inner side surface 14c outward in this way, as shown in FIG. 7C, even if the filth passes, it can pass smoothly even if it collides with the inner side surface 14c. In addition, even when no filth passes, the washing water forms a flow that collides with the inner side surface 14c, so that siphon is easily induced.

The longitudinal cross-sectional view of the flush toilet which applied the drain socket which concerns on this invention Front view of the drain socket Side view of the drain socket Top view of the drain socket Bottom view of the drain socket Vertical section of the drain socket (A)-(c) is the figure explaining the inner surface shape of the socket flow path Longitudinal sectional view of cleaning water retention member Plan view of wash water retention member (A) And (b) is the figure explaining the relationship between the conventional flush toilet and a drain socket.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Toilet body 2 ... Ball part 3 ... Guide recessed part 4 ... Trap flow path 5 ... Toilet body outlet, 6 ... Drain pipe, 10 ... Drain socket, 11 ... Standing part, 12 ... Inflow of drain socket , 13 ... Outflow portion of drain socket, 14 ... Socket channel, 14a ... Upper curved surface, 14b ... Lower curved surface, 14c ... Rear inner surface, 15 ... Socket channel inlet, 16 ... Socket channel outlet, 17 ... Shelf , 18 ... Washing water retention member, 19 ... Throttle part, 20 ... Skirt part, 21 ... Projection piece, 22 ... Notch, 23 ... Projection, 24 ... Hanging part, O1 ... Center of inflow part, O2 ... Center, O3: Center of outlet of socket flow path, O4: Center of outlet portion.

Claims (4)

In the drain socket for connecting the outlet of the toilet body and the drain pipe connected to the sewer pipe, the drain socket includes an inflow portion where the outlet of the toilet body is inserted and connected, and an outflow which is inserted and connected to the drain pipe. and parts, continuously provided between the outlet portion thereof the inflow portion, and a socket channel you pass downwardly wastes from above, with reference to the longitudinal direction of the toilet body, continuous to said inlet portion center of the socket channel that has drained socket, characterized in that eccentric rearward with respect to the center of the front, and the outlet portion with respect to the center of the inlet. 2. The drain socket according to claim 1, wherein a shelf that prevents water from flowing in by applying water is formed at a boundary between the lower end of the inflow portion and a socket flow path inlet. Drain socket. 2. The drain socket according to claim 1, wherein a drooping portion for preventing air from entering from below is formed at a front portion of the socket flow path outlet. 2. The drain socket according to claim 1, wherein a front inner surface of the socket flow path is formed by continuously connecting an upper curved surface and a lower curved surface, the upper curved surface bulges toward the inside of the socket flow path, and the lower curved surface is a socket flow. A drainage socket characterized in that it bulges outwardly from the road, and further the entire rear inner surface of the socket channel bulges outwardly from the socket channel.