JP2008144523A - Draining structure of bowl - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the number of assembly processes by reducing the number of parts, and to avoid formation of a level difference on an inner surface of a bowl to facilitate the maintenance, when a drain pipe is connected to a drain outlet of the bowl. <P>SOLUTION: Projections 12 are formed around the drain outlet 10 on an outer surface of the bowl 1. Piece parts 21 engaged with the projections 12 are formed on a connection member 20 connecting the drain pipe to the drain outlet 10. By engaging the piece parts 21 of the connection member 20 with the projections 12 of the bowl 1, the connection member 20 is fixed to the bowl 1 and the drain outlet 10 and the drain pipe are connected to each other. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a drainage structure for a bowl provided, for example, in a bathroom vanity or a sink for homes.

In general, a drain outlet is formed at the bottom of a bowl provided in a vanity, and the upstream end of a drain pipe disposed below the bowl is connected to the drain outlet. As this type of bowl, for example, as disclosed in Patent Document 1, a cylindrical member that accommodates a trap is provided between a drain port of the bowl and a drain pipe, and the drain pipe is provided via the cylindrical member. Is known to be connected to the drain of the bowl. The cylindrical member of Patent Document 1 extends in the vertical direction, and a flange is formed on the upper part, while a thread is formed on the outer peripheral surface of the lower part. This cylindrical member is inserted into the drainage port from the inside of the bowl, and the nut is screwed onto the thread protruding from the drainage port to the outside of the bowl with the flange in contact with the peripheral edge of the drainage port on the inner surface of the bowl Let it be fixed to the bowl. The upstream end portion of the drain pipe is connected to the lower end portion of the cylindrical member.
Japanese Patent Laid-Open No. 7-71062

  By the way, in patent document 1, in order to connect the drain outlet of a bowl to a drain pipe, a cylindrical member and a nut are required, and a number of parts will increase. Further, since the flange of the cylindrical member is in contact with the peripheral edge of the drain on the inner surface of the bowl, a step is generated between the flange and the inner surface of the bowl. If dirt is attached to this step, there is a problem that it is difficult to remove and difficult to clean.

  The present invention has been made in view of such points, and the object of the present invention is to reduce the number of parts by reducing the number of parts when the drain pipe is connected to the drain port of the bowl. It is to facilitate the care so that there is no step on the inner surface.

  In order to achieve the above object, according to the first aspect of the present invention, a bowl having a drain port, an engaging portion provided around the drain port on the outer surface of the bowl, and an engaged state that engages with the engaging portion. A connecting member for connecting a drain pipe to the drain outlet, and engaging the engaged portion of the connecting member with the engaging portion of the bowl, thereby fixing the connecting member to the bowl In addition, the drain outlet and the drain pipe are connected.

  According to a second aspect of the present invention, in the first aspect of the invention, a cylindrical portion that protrudes toward the outside of the bowl is provided around the drain outlet of the bowl, and the engaging portion is provided on the outer peripheral surface of the cylindrical portion. It is the formed recessed part, and it is set as the structure which a to-be-engaged part is a piece part inserted in the said recessed part.

  According to a third aspect of the present invention, in the first aspect of the invention, a cylindrical portion that protrudes toward the outside of the bowl is provided around the drain outlet of the bowl, and the engaging portion is formed on the outer peripheral surface of the cylindrical portion. It is a protrusion formed in a part in the circumferential direction, and the engaged portion is a piece formed so as to be engaged with the protrusion from the circumferential direction of the cylindrical portion.

  According to the first aspect of the present invention, since the engaged portion of the connecting member is engaged with the engaging portion of the bowl, the connecting member is fixed to the bowl and the drain port and the drain pipe are connected. The cylindrical member and nut as in the conventional example are not necessary. As a result, the number of parts is reduced and the number of assembling steps can be reduced. Further, since the cylindrical member of the conventional example is not necessary, a step does not occur on the inner surface of the bowl, and therefore, care can be facilitated.

  According to the invention of claim 2, since the concave portion of the cylindrical portion provided around the drainage port of the bowl is used as the engaging portion, and the piece portion fitted into the concave portion is used as the engaged portion, the connecting member is fixed to the bowl. In doing so, it is only necessary to fit the one part into the recess, and the assembly workability can be improved.

  According to invention of Claim 3, the protrusion formed in the circumferential direction one part of the outer peripheral surface of the cylindrical part provided in the circumference | surroundings of the drain port of the bowl is made into an engaging part, and the piece engaged from this protruding part from the circumferential direction Since the portion is an engaged portion, the piece can be engaged with the protrusion by turning the connecting member in the circumferential direction of the cylindrical portion, and the assembly workability can be improved. On the other hand, when the connecting member is turned in the circumferential direction of the cylindrical portion in a state where the one portion is engaged with the protrusion, the one portion can be detached from the protrusion. That is, in this invention, since the connecting member can be easily attached to and detached from the bowl, the maintainability can be improved.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is merely illustrative in nature, and is not intended to limit the present invention, its application, or its use.

Embodiment 1 of the Invention
FIG. 2 is a bowl 1 for a bathroom vanity to which the drainage structure of the bowl according to the embodiment of the present invention is applied. The bowl 1 is formed by press-molding a thermosetting resin material. As shown in FIG. 1, a drain port 10 is formed at the bottom of the bowl 1. A cylindrical portion 11 is provided around the drain port 10 on the outer surface of the bowl 1. A drain pipe 30 is connected to the cylindrical portion 11 via a connecting member 20, and water in the bowl 1 is drained from the drain pipe 30.

  The cylindrical portion 11 has a cylindrical shape that protrudes substantially vertically from the periphery of the drain outlet 10 of the bowl 1 to the lower side, which is the outside of the bowl 1. The internal space of the cylindrical part 11 constitutes a drainage channel communicating with the drainage port 10. The cylindrical portion 11 is integrally formed with the bowl 1. There is no step at the boundary between the inner surface of the bowl 1 and the inner peripheral surface of the cylindrical portion 10, and both are connected by an inclined surface 9. The lower end surface of the cylindrical portion 11 is configured as a flat surface extending perpendicular to the center line of the cylindrical portion 11. An annular packing 31 that seals between the connecting member 20 and the lower end surface of the cylindrical portion 11 is in contact therewith. As shown in FIG. 3, four protrusions 12 (engagement portions) are formed on the outer peripheral surface of the cylindrical portion 11 at substantially equal intervals in the circumferential direction.

  The connecting member 20 is formed by injection molding a resin material, and has a cylindrical shape as a whole. The inner diameter of the connecting member 20 is set to be approximately the same as the inner diameter of the cylindrical portion 11. Four piece portions 21 (engaged portions) protruding upward are integrally formed at the upper end portion of the connection member 20 at substantially equal intervals in the circumferential direction. A claw portion 22 constituting a part of the piece portion 21 is formed on the upper edge portion of each piece portion 21 so as to protrude toward the center line X (shown only in FIG. 1) of the connection member 20. . The claw portion 22 is configured to engage with the protrusion 12 of the tubular portion 11 in a state where the connecting member 20 is attached to the tubular portion 11. A stopper portion 27 (shown in FIG. 4) that protrudes inward of the connection member 20 is formed on one edge portion of the cylindrical portion 11 in the piece portion 21. The stopper portion 27 is integrated with the claw portion 22 and constitutes a part of the piece portion 21.

  On the inner peripheral surface of the upper end portion of the connection member 20, an annular plate-shaped seal surface 23 that protrudes toward the center line X of the connection member 20 is formed. The seal surface 23 extends in a direction orthogonal to the center line X of the connection member 20. An annular groove 23 a into which the packing 31 is fitted is formed on the seal surface 23.

  On the outer peripheral surface of the connecting member 20, a male screw portion 24 is formed in a region about 1/3 upward from the lower end portion. A nut 32 for removably fixing the upstream end portion of the drain pipe 30 to the connecting member 20 is screwed into the male screw portion 24. Further, a tube portion 25 that protrudes outward substantially horizontally is integrally formed below the sealing surface 23 of the connecting member 20. The pipe portion 25 communicates with the inside of the connection member 20. As shown in FIG. 2, a lower end portion of a drainage tube 26 extending from an overflow opening (not shown) provided in the upper portion of the bowl 1 is connected to the distal end portion of the tube portion 25.

  As shown in FIG. 3, the packing 31 is formed by molding an elastic member such as rubber into an annular plate shape. As shown in FIG. 1, the claw portion 22 is engaged with the protrusion 12. In this state, the lower end surface of the cylindrical portion 11 and the seal surface 23 are brought into contact with and held between the both. The packing 31 seals between the tubular portion 11 and the connecting member 20, and prevents water leakage from between the tubular portion 11 and the connecting member 20. Reference numeral 33 denotes a sealant applied after the connection member 20 is assembled to the ball 1.

  In the drainage part structure of the bowl 1 configured as described above, when the connection member 20 is attached to the bowl 1, first, the packing 31 is disposed between the seal surface 23 of the connection member 20 and the claw part 22. Thereafter, the connecting member 20 is brought closer to the cylindrical portion 11 of the bowl 1 from the upper side, and the connecting member 20 is positioned between the projecting portions 12 and 12 adjacent to each other in the circumferential direction. Press against the cylindrical part 11. In this state, the packing 31 is in contact with the seal surface 23 and the lower end surface of the cylindrical portion 11. The connection member 20 is rotated around the center line X while being pressed against the cylindrical portion 11. The rotation direction at this time is a direction in which each piece portion 21 approaches the protrusion 12 from the side opposite to the stopper portion 27 (shown in FIG. 4). When the connecting member 20 is rotated, the claw portion 22 is engaged with the protruding portion 12, the stopper portion 27 hits the protruding portion 12 from the circumferential direction, and the connecting member 20 does not rotate any more. Thereby, it is possible to prevent the connecting member 20 from being rotated excessively, and the connecting member 20 can be reliably fixed to the bowl 1. Further, since the connecting member 20 is urged downward by the elastic force of the packing 31, the claw portion 22 strongly hits the protrusion 12. Thereby, the connection member 20 becomes difficult to rotate carelessly. Thereafter, a liquid sealing agent 33 is applied between the upper end of the connecting member 20 and the outer surface of the bowl 1 to form a double seal structure.

  When the connection member 20 is removed from the bowl 1, the claw portion 22 may be detached from the projection 12 by rotating in the opposite direction while pressing the connection member 20 against the cylindrical portion 11.

  The lower surface 22a of the claw portion 22 may be inclined downward toward the stopper portion 27 side. In this way, when the connecting member 20 is rotated in the fixing direction, the initial rotational force can be reduced to improve the workability, while the sealing surface 23 becomes stronger against the lower end surface of the cylindrical portion 11 as it rotates. As a result of being pressed, the packing 30 is strongly compressed to improve the sealing performance, and it does not rotate unexpectedly after connection.

  As described above, according to the bowl drainage structure according to the first embodiment, the claw portion 22 of the connecting member 20 is engaged with the protrusion 12 of the bowl 1, so that the number of parts can be reduced. Assembly time can be reduced. Further, since the cylindrical member as in the conventional example is not necessary, a step is not generated around the drainage port 10 on the inner surface of the bowl 1, and the maintenance can be facilitated.

  Further, the protrusion 12 is formed on a part of the outer peripheral surface of the cylindrical part 11 in the circumferential direction, and the claw part 22 is also formed on a part of the connection member 20 in the circumferential direction. Thereby, the claw part 22 can be engaged with the protrusion 12 by a simple operation of pressing the connecting member 20 against the cylindrical part 11 and turning it, and the assembling workability can be improved. On the other hand, the connecting member 20 can be removed from the bowl 1 by turning the connecting member 20 with the claw portion 22 engaged with the protrusion 12. That is, since the connecting member 20 can be easily attached to and detached from the bowl 1, the maintainability can be improved.

  In addition, you may provide the protrusion 28 for a lock | rock in the stopper part 27 vicinity of the nail | claw part 22 like the modification of Embodiment 1 shown in FIG. The locking protrusion 28 is formed so as to protrude downward from the lower surface 22a of the claw portion 22, and has a sharp tip in the protruding direction. The protrusion 12 is formed with a locking recess (not shown) into which the locking protrusion 28 is fitted. In the first modification, when the connection member 20 is attached to the bowl 1, when the connection member 20 is turned to engage the claw portion 22 with the protrusion 12, the locking protrusion 28 is fitted into the locking recess, It becomes difficult for the connecting member 20 to come off.

  The number of the protrusions 12 and the claw portions 22 is not limited to four, but may be three or less, or may be five or more.

<< Embodiment 2 of the Invention >>
FIG. 5 is an exploded perspective view of the bowl 1 to which the bowl drainage structure according to Embodiment 2 of the present invention is applied. The drainage structure of the bowl of the second embodiment is different from that of the first embodiment in the shape of the cylindrical portion 11 of the bowl 1 and the shape of the connecting member 20, and the other portions are the same. The same parts as those in the first embodiment are denoted by the same reference numerals, and different parts will be described in detail.

  That is, a groove-like recess 40 (engagement portion) extending continuously in the circumferential direction is formed in the vicinity of the central portion in the vertical direction on the outer peripheral surface of the cylindrical portion 11. Further, the piece portion 21 of the connection member 20 can be bent and deformed in the radial direction of the connection member 20, and the stopper portion 27 is not formed on the piece portion 21.

  When the connecting member 20 is attached to the bowl 1, the connecting member 20 is brought close to the cylindrical portion 11 of the bowl 1 from the upper side and the tip of the piece 21 is pressed against the cylindrical portion 11. Elastically deforms so as to bend outward in the radial direction. And when the nail | claw part 22 reaches the recessed part 40, the shape of the piece part 21 will be restored and the nail | claw part 22 will fit in the recessed part 40. FIG. In the second embodiment, it is possible to attach the connecting member 20 to the bowl 1 simply by pressing the connecting member 20 against the cylindrical portion 11 as described above.

  According to the drainage structure of the bowl according to the second embodiment, as in the first embodiment, the number of parts can be reduced and the number of assembling steps can be reduced, and the inner surface of the bowl 1 is not stepped and can be easily maintained. can do.

  Although not shown, the present invention can also be applied to a bowl without an overflow opening. Further, the drain port 10 of the ball 1 may be provided with a drain plug as in the conventional example.

  As described above, the bowl drainage structure according to the present invention is suitable, for example, for a resin bowl provided in a vanity.

It is a fragmentary sectional view of the drainage structure of the bowl concerning Embodiment 1 of the present invention. 3 is a side view of a bowl drainage structure according to Embodiment 1. FIG. 3 is an exploded perspective view of a bowl drainage structure according to Embodiment 1. FIG. FIG. 9 is an enlarged perspective view showing the vicinity of one part of a connection member according to a modification of the first embodiment. FIG. 3 is a diagram corresponding to FIG. 3 according to a second embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bowl 10 Drain outlet 11 Tubular part 12 Protrusion part (engagement part)
20 Connection member 21 One part (engaged part)
40 Recess (engagement part)

Claims (3)

A bowl having a drain,
An engaging portion provided around a drain outlet on the outer surface of the bowl;
Having an engaged portion that engages with the engaging portion, and a connecting member that connects a drain pipe to the drain port;
By engaging the engaged portion of the connecting member with the engaging portion of the bowl, the connecting member is fixed to the bowl, and the drain port and the drain pipe are connected. The drainage structure of the bowl. In the bowl drainage structure according to claim 1,
Around the drain outlet of the bowl is provided a cylindrical part that protrudes toward the outside of the bowl,
The engaging portion is a concave portion formed on the outer peripheral surface of the cylindrical portion,
The bowl drainage structure, wherein the engaged portion is a piece fitted into the recess. In the bowl drainage structure according to claim 1,
Around the drain outlet of the bowl is provided a cylindrical part that protrudes toward the outside of the bowl,
The engaging portion is a protrusion formed on a part of the outer peripheral surface of the cylindrical portion in the circumferential direction,
The bowl drainage structure, wherein the engaged portion is a piece formed so as to be engaged with the protrusion from the circumferential direction of the cylindrical portion.

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