JP2005307650A - Water closet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water closet capable of reliably washing the whole surface of a bowl of the water closet with water for flushing supplied with a low water pressure. <P>SOLUTION: A running water feed passage sloped downward 30 is formed in a rim water feed passage portion 11 in a rim 10 along the water running direction of water for flushing and a discharge hole 31 is made at the tip of the running water feed passage sloped downward 30. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  This application relates to flush toilets. More specifically, the present invention relates to a new flush toilet that can reliably wash the entire bowl surface with washing water supplied at a low water pressure.

Various cleaning methods for bowl surfaces in flush toilets are known. For example, as illustrated in FIG. 6, a plurality of small water discharge holes (I) and long water discharge holes (U) are formed on the lower surface of the rim water supply channel portion (a) arranged so as to circulate around the upper part of the toilet bowl surface, A method of supplying cleaning water uniformly from these water discharge holes (b) and (c) to the bowl surface (d) and, as illustrated in FIG. A method of cleaning the entire bowl surface (d) by means of, or, as illustrated in FIG. 8, high-pressure washing water is horizontally applied from a water discharge hole (e) at one location behind the upper end of the bowl surface (d). A method is known in which swirling water is formed on the bowl surface (d) (for example, Patent Documents 1 and 2).
JP 2001-279788 A Japanese Patent Laid-Open No. 2002-146887

  In the conventional system as described above, the entire bowl surface (d) can be washed with a high water pressure if the washing water is supplied from a water storage tank directly connected to the flush toilet. However, when cleaning water is supplied by supplying water from a water pipe, the water flow depends on the water supply pressure of the water supply. For example, in a region where the water supply pressure of the water supply is low, a preferable water supply form for each cleaning method is impossible. It becomes. That is, in the examples of FIGS. 6 and 7, the water surface is attenuated at the front end side of the rim water supply channel (a), so that the entire bowl surface (d) cannot be washed uniformly. In particular, in the case of a flush toilet as illustrated in FIG. 6, since wash water is sequentially discharged from the individual water discharge holes (i) and (c), the degree of pressure loss is low when the supply water pressure is low. There is a problem that a sufficient amount of washing water is not discharged from the water discharge hole on the tip side. Furthermore, in the example of FIG. 8, since the water flow of the washing water ejected from the water discharge hole (e) is low, it is impossible to form swirling water on the entire bowl surface (d).

  The invention of this application has been made in view of the circumstances as described above, and provides a flush toilet that can solve the problems of the prior art and can evenly wash the bowl surface even with low-pressure water supply. The challenge is to do.

  In the invention of this application, first, the rim water supply channel portion is provided with a downward inclined flow channel portion that is inclined downward along the flow direction of the wash water, and at the tip of the downward inclined flow channel portion. A flush toilet having a water discharge hole is provided.

  Secondly, in the first invention, a flush toilet having a plurality of water discharge holes is provided.

  3rdly provides the flush toilet in which the downward inclined flow water channel part in 1st and 2nd invention is arrange | positioned by the retrofitting fixation to a rim water supply channel part.

  Fourthly, in the first to third aspects of the present invention, there is provided a flush toilet having a water discharge hole at a nozzle tip retrofitted to a downward inclined flow channel portion.

  According to the first aspect of the invention, the wash water is discharged from the water discharge hole at the tip of the downward inclined flowing water channel portion, and the swirling flowing water is formed on the bowl surface. Since the wash water is discharged from the water discharge hole through the downward inclined flow channel portion without impairing the flow energy of the rim water supply channel portion, the pressure loss is minimized. For this reason, it becomes possible to wash | clean the whole bowl surface uniformly also by water supply of low water pressure.

  According to the second aspect of the present invention, the entire bowl surface can be more uniformly cleaned by discharging the cleaning water from the plurality of water discharge holes. In particular, in the flush toilet of this application, since the pressure loss is small when the wash water is sequentially discharged from the plurality of water discharge holes, the discharge amount of the wash water from all the water discharge holes is substantially uniform.

  According to 3rd invention, the flush toilet which has a downward inclination flow channel part provided with the water discharging hole which becomes a hole shape suitable for the shape of a toilet bowl and a water supply pressure with a more uniform size is provided.

  According to the 4th invention, the flush toilet bowl which can discharge flush water at the angle suitable for the shape of the toilet bowl and the supply water pressure is provided.

  Embodiments of the present application will be described in detail below with reference to the accompanying drawings.

  FIG. 1 is a perspective view showing an embodiment of a flush toilet provided by this application. In the flush toilet illustrated in FIG. 1, a rim water supply passage portion (11) is provided inside the rim (10), and wash water is supplied in the direction indicated by the arrow in the drawing. Note that the water supply direction to the rim water supply channel (11) of the cleaning water is not limited to branching in both directions as in the example of FIG. 1, and is described in, for example, JP-A-8-177122. As shown, the rim water supply channel (11) may be circulated from one direction.

  As illustrated in FIG. 1, the lower wall (12) of the rim (10) is provided with an inclined wall (20) inclined downward along the flowing direction of the washing water. ) Is formed with a downward inclined flow channel portion (30) as illustrated in the cross-sectional view of FIG. That is, as shown by the arrows in the figure, the wash water flowing in the rim water supply channel (11) has the rim water supply channel (11) in the horizontal direction and the downward inclined flow channel (30) in the diagonally downward direction. Flowing into.

  As illustrated in FIGS. 1 and 2, the end wall surface (21) of the inclined wall (20) is provided with a water discharge hole (22), and the wash water from the downward inclined flow channel portion (30) is provided. Is discharged from the water discharge hole (31) to the bowl surface (50), and the bowl surface (50) is washed as swirling flowing water as indicated by an arrow.

  That is, in the flush toilet provided by the invention of this application, the wash water flowing in the rim water supply channel portion (11) flows through the downward inclined flow channel portion (30) without impairing the flow energy (water force), Further, the water is discharged from the water discharge hole (31) while maintaining the water force. Thus, for example, in a flush toilet with a direct connection to a water pipe, even when the water supply pressure is low, the wash water is discharged to the bowl surface (50) by a water having a preferable strength, and the entire bowl surface (50) is made uniform. It can be cleaned.

  In addition, as illustrated in FIG. 1, it is also preferable to provide a plurality of water discharge holes (31) according to the shape of the bowl surface (50), the water supply method, the water supply pressure during use, and the like.

  In addition, about the angle of the inclined wall (20) for forming the downward inclined flowing water channel part (30), the angle and direction of the end wall surface (21), the shape and size of the water discharge hole (31), etc. It can be determined appropriately according to the shape of the bowl surface (50), the water supply method, the water supply pressure during use, and the like. For example, the end wall surface (21) of the inclined wall may be at an angle directly opposite to the flowing water direction in the rim water supply channel portion (11), or slightly in the center direction of the bowl surface (50). It may be an angle that faces. In general, since the water pressure varies greatly from region to region, in the case of flush toilets directly connected to water pipes, a flow rate adjusting mechanism is provided. Therefore, even in the case of the flush toilet provided by the invention of this application, it is possible to adopt an optimum structure for the variable flow rate by this flow rate adjusting mechanism.

  Furthermore, although the shape of the bowl surface (50) may be appropriate, for example, as illustrated in FIG. 3, the landing surface (51) of the cleaning water discharged from the water discharge hole (41) is a substantially horizontal surface. Is preferred for more uniform cleaning of the bowl surface (50).

  FIG. 4 is a cross-sectional view of an essential part showing still another embodiment of the flush toilet provided by this application. In the example of FIG. 4, the water channel member (60) formed as a separate body is retrofitted and fixed to the opening (13) of the rim lower wall (12). That is, in the example of FIG. 4, the rear bifurcated portion (61) of the water channel member (60) is fitted to the rim lower wall (12), and the front portion (62) is screwed to the rim lower wall (12). 63), the flow channel member (60) is fixed to the opening (13). As shown by the arrows in the figure, the wash water flowing through the rim water supply channel portion (11) flows through the downward inclined flow channel portion (64) in the flow channel member (60) without decreasing the water force, and the tip thereof. The water is discharged from the water discharge hole (65) to the bowl surface (50).

  The water channel member (60) can be manufactured in a uniform shape and a uniform size, for example, as a molded product made of resin, metal, ceramics, or a composite material thereof, preferably hard rubber or silicon. That is, when an inclined wall (20) or a water discharge hole (31) is formed in a ceramic toilet as illustrated in FIG. 1, fine preparation is difficult due to manufacturing variations. In the case of the flush toilet illustrated in FIG. 4, the flow channel member (60) is manufactured separately as a desired uniform size and uniform shape, so that the shape of the bowl surface (50), the water supply method, It is possible to provide a downward inclined flow channel portion (64) suitable for the water supply pressure and the like and a water discharge hole (65).

  FIG. 5 is a cross-sectional view of an essential part showing still another embodiment of the flush toilet provided by this application. In the example of FIG. 5, a nozzle (70) as a separate body is retrofitted and fixed to a water discharge hole opening formed on the end wall surface (21) of the inclined wall (20). 70) is provided with a water discharge hole (71). That is, in the example of FIG. 5, the nozzle (70) is fixed to the opening by screw fixing, but the tip portion of the nozzle (70) is slightly bent, and cleaning from the water discharge hole (71) is performed. The water discharge direction can be finely adjusted. Thereby, even if the inconvenience occurs in the angle and direction of the end wall surface (21) or the size and shape of the water discharge hole (31) due to manufacturing variations in the flush toilet illustrated in FIG. 70) eliminates these disadvantages, and makes it possible to clean the bowl surface (50) uniformly in an optimal state. In addition, this nozzle (70) can be comprised by molded articles, such as resin, a metal, ceramics, hard rubber, silicon, those composites, etc., for example.

  Of course, the invention of this application is not limited by the above examples, and it goes without saying that various configurations and the like are possible.

It is the perspective view which showed one Example of the flush toilet provided by this application. It is a principal part sectional side view of the flush toilet illustrated in FIG. It is a principal part front sectional view of the flush toilet illustrated in FIG. It is principal part sectional drawing which showed another Example of the flush toilet provided by this application. It is principal part sectional drawing which showed another Example of the flush toilet provided by this application. It is the top view which showed an example of the conventional flush toilet. It is the perspective view which showed another example of the conventional flush toilet. It is the principal part perspective view which showed another example of the conventional flush toilet.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Rim 11 Rim water supply channel part 12 Rim lower wall 13 Opening part 20 Inclined wall 21 End part wall surface 30 Downward inclined flow channel part 31 Water discharge hole 50 Bowl surface 51 Landing surface 60 Flow channel member 61 Back bifurcated part 62 Front part 63 Screw 64 Downward inclined flow channel portion 65 Water discharge hole 70 Nozzle 71 Water discharge hole

Claims (4)

  The rim water supply channel portion is provided with a downward inclined flow channel portion that is inclined downward along the direction of the wash water flow, and has a water discharge hole at the tip of the downward inclined flow channel portion. .   The flush toilet of claim 1 having a plurality of water discharge holes.   The flush toilet according to claim 1 or 2, wherein the downward inclined flow channel portion is disposed by retrofitting to the rim water channel portion.   The flush toilet according to claim 1, 2 or 3, wherein a water discharge hole is provided at a tip of a nozzle that is retrofitted and fixed to the downward inclined flow channel.

Images