JPH07310354A - Swirling flow type water closet bowl - Google Patents

Abstract

PURPOSE:To obtain a swirling flow type water closet bowl, which has the high washing effect of a stool bowl and excellent discharge performance and in which a washing sound is lowered. CONSTITUTION:The supply port 30 of wash water is formed at the rear end section of a rim water path 26A on one side to a center line in the longitudinal direction passing at the center of a stool bowl 12 while the rear end section of a rim water path 26B on the other side is formed in closed structure. The flow of wash water in a rim water path 26 is directed in one direction while a second water-jet hole 32 and a third water-jet hole 34 having openings larger than water-jet holes 28 on the front section side and the rear section side as a center line in the cross direction passing at the center is used as a border and being formed in a slot shape in the direction that the rim water path 26 is elongated are formed to the underside of the rim water path 26A at least one by one respectively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flush toilet bowl, and more particularly to a swirl-type flush toilet bowl in which a swirl flow is generated to wash the toilet bowl.

[0002]

2. Description of the Related Art Generally, a flush toilet has a rim water passage along the upper peripheral edge of a toilet bowl, and guides the wash water to the rim water passage, and also the lower surface of the rim water passage. Cleaning water is sprayed toward the inside of the toilet bowl through a plurality of water spray holes formed along the edge of the toilet bowl to clean the inside of the toilet bowl.

As this type of flush toilet, a flush-type toilet bowl is often used in which the toilet bowl is washed only with the flushing water of the flush water to wash away the dirt. In the case of this flush-type flush toilet bowl, In addition to the problem that the water surface cannot be taken large and dirt is likely to adhere to the outer peripheral portion of the water surface, there are problems such as entrainment of air during cleaning and a large cleaning noise due to collision noise of the cleaning water.

On the other hand, there is also used a swirling-type flush toilet bowl in which the flow of water is swirled inside the toilet bowl and the swirling flow is used to wash the toilet bowl. Thus, as a means for generating a swirling flow in this swirling flush toilet, by forming a water spray hole obliquely and injecting the washing water in the rim water passage into the toilet bowl obliquely through this oblique water spray hole. There are known ones that generate a swirl flow.

However, it is difficult to form the water spray holes obliquely in manufacturing the toilet bowl, and in the conventional swirl flow type flush toilet including the swirl flow type toilet bowl in which the water spray holes are inclined as described above, However, there is a problem that the swirling flow is not always generated with sufficient momentum, and the discharge performance of waste is not sufficient.

[0006]

The present invention has been made to solve the above problems. Thus, the invention of the present application provides a rim water passage along the upper peripheral edge of the toilet bowl, and provides a plurality of water spray holes along the lower surface of the rim water passage so that the cleaning water guided to the rim water passage is In a flush toilet which is configured to be injected into the toilet bowl through the water spray holes to wash the inside of the toilet bowl, a rim passage on one side located on the right side or the left side with respect to the longitudinal centerline passing through the center of the toilet bowl. On the lower surface of the water channel, and on the front side with the center line in the left-right direction passing through the center as a boundary, there is provided a second water ejection hole having an opening larger than the water ejection hole and having a long hole shape in the extending direction of the rim water passage. Along the lower surface of the rim water passage on the same side as or opposite to the second water spray hole and on the rear side with the center line as a boundary, an opening larger than the water spray hole and extending in the direction in which the rim water passage extends. At least one third water spray hole having a hole shape is formed. Each characterized by providing (claim 1).

According to another invention of the present application, in the flush toilet according to claim 1, the rear end portion of the rim water passage on one side located on the right side or the left side with respect to the longitudinal center line passing through the center of the toilet bowl is washed. The water supply port is formed, and the rear end portion of the rim water passage on the other side has a closed structure so that the flow of washing water in the rim water passage is one-way (claim 2). .

Still another invention of the present application is the flush toilet bowl according to claim 1 or 2, wherein the third water spray hole is formed larger than the second water spray hole (claim 3).

Still another invention of the present application is the flush toilet bowl according to claim 1, 2 or 3, wherein the third water spray hole is arranged rearward of the center of the water storage surface in the toilet bowl. (Claim 4).

[0010]

As described above, according to the first aspect of the invention, at least one large second water spray hole and at least one third water spray hole are provided in the front and rear portions of the rim water passage. Is.

In the flush toilet of the present invention, the flush water introduced into the rim water passage is introduced into the toilet bowl through a plurality of water spray holes provided along the lower surface thereof and second and third water spray holes having large openings. It is ejected and the toilet is washed.

At this time, the washing water that has dropped into the toilet bowl through the large second water discharge hole drops into the toilet bowl as it is while maintaining the flow momentum in the rim water passage to some extent. Then, a swirling flow is generated based on the water sprayed from the second water spray hole.

On the other hand, the water that has dropped into the toilet bowl through the third water spray hole also drops into the toilet bowl while maintaining the flow force in the rim water passage. Since it is located at, the water dropped from the third water spray hole flows into the water reservoir relatively quickly. The water dropped through the third water spray hole exerts a downward force on the water in the reservoir.

The swirling flow based on the action of the water spray from the second water spray hole and the downward pulling force based on the water spray from the third water spray hole effectively cleans the inside of the toilet bowl. The water in the sump is quickly discharged.

Here, when the downward pulling force due to the water spray from the third water spray hole is not generated, the water in the water reservoir continues to swirl for a long time, but from the third water spray hole Due to the downward pulling force based on the water spray, the water in the water storage portion is quickly discharged together with the waste.

According to the second aspect of the invention, the flow of the washing water in the rim water passage is made to be one-way, and according to the present invention, the swirling flow can be generated with a stronger force.
In this case, both the second water spray hole and the third water spray hole can be provided in the rim water passage on one side on the side where the supply port is provided.

According to the third aspect of the present invention, the third water spray hole is formed to be larger than the second water spray hole, whereby a sufficient downward pulling force for water in the water reservoir of the toilet bowl is provided. Can be born.

According to the fourth aspect of the present invention, the third water spray hole is arranged on the rear side of the center of the reservoir part in the toilet bowl. According to the present invention, the water sprayed through the third water spray hole can be quickly discharged. There is an advantage that the water can be made to plunge into the water storage portion and a downward pulling action with respect to the water storage can be effectively exerted.

[0019]

Embodiments of the present invention will now be described in detail with reference to the drawings. In FIG. 1 and FIG. 2, 10 is a Western style flush toilet bowl (however, the toilet seat and toilet lid are not shown in the figure), which has a toilet bowl 12 on the upper portion and a leg portion 14 on the lower portion.
have.

The toilet bowl 12 is provided with a water reservoir 16 at the bottom thereof at a position near the rear of the center O (center of the opening at the upper end; see FIG. 2), and the water reservoir 16
A trap 17 is provided subsequent to the trap 17, and a drain pipe is connected to a drain port 19 at the rear end of the trap 17.

A stepped portion 18 is formed on the toilet bowl 12 at a substantially intermediate height position above and below, and a lower portion of the stepped portion 18, that is, a portion around the reservoir 16 is a peripheral wall surface. The steep slope 20 has a steep rising angle. Also, the stepped portion 18
The upper portion is a gentle slope 22 having a gentle slope. However, neither the steep slope portion 20 nor the gentle slope portion 22 is a flat curved surface, but a smooth curved surface.

On the other hand, at the upper end of the toilet bowl 12, a rim 24 is formed in a protruding state along substantially the entire peripheral edge thereof, and a rim water passage 26 is formed inside the rim 24. A plurality of water spray holes 28 having a small diameter are formed along the lower surface of the rim water passage 26, and the wash water introduced into the rim water passage 26 enters the toilet bowl 12 through the plurality of water spray holes 28. It is supposed to be ejected.

As shown in FIG. 2, the rear portion of the rim water passage 26 is divided into left and right at a portion near the center line Q in the front-rear direction passing through the center O of the toilet bowl 12, and the upper side in the figure. The end of the rim water passage 26B (which is on the left for convenience) has a closed structure.

On the other hand, at the rear end of the rim water passage 26A on the lower side (for convenience, right side) in the figure, a supply port 30 for supplying cleaning water is provided in a communicating state, and the cleaning port is used for cleaning. Water is introduced into the rim water passage 26 so that the rim water passage 26 can flow counterclockwise in the figure.
That is, in this example, the flow of water in the rim water passage 26 is one-way.

In this example, in the water passage 26A on the right side of the centerline Q in the front-rear direction, the water spray holes 28 are formed in the front and rear parts of the waterway 26A passing through the center O in the left-right direction.
One second water ejection hole 32 and one third water ejection hole 34, each having a larger opening and having a long hole shape, are formed in the extending direction of the rim water passage 26.

In the present example, the second water spray holes 32 are formed in a size such that the ratio thereof is 1: 3 with respect to the water spray holes 28, and the third water spray holes 34 are formed with respect to the second water spray holes 32. They are formed in such a size that the ratio becomes 1: 4.
The second water spray hole 32 is preferably twice as large as the water spray hole 28, and the third water spray hole 34 is preferably twice as large as the second water spray hole 32.

The third water spray hole 34 (strictly speaking, the third water spray hole 34)
(The position of the center of) is also arranged at a position on the rear side with respect to the center line S in the left-right direction passing through the center P of the reservoir surface 35. Reference numeral 36 in FIG. 1 is a mounting hole for mounting the toilet seat.

In the flush toilet 10 of this example, the supply port 3
The wash water supplied from 0 flows in the rim water passage 26 counterclockwise in the figure, and reaches the rear end of the left rim water passage 26B.
In the meantime, the washing water in the rim water passage 26 is filled with the water spray holes 2
Water is sprayed into the toilet bowl 12 through 8 to wash the toilet bowl. At that time, the washing water is supplied in a state of being evenly dispersed in the toilet bowl 12 through the water spray holes 28.

On the other hand, the cleaning water sprayed into the toilet bowl 12 through the second water spray holes 32 is sprayed into the toilet bowl 12 while maintaining the running water in the rim water passage 26 to some extent. Moreover, since the water sprayed into the toilet bowl 12 through the second water spray hole 32 falls to the gentle slope portion 22 of the toilet bowl 12, the force of the water that has dropped through the second water spray hole 32 in the toilet bowl 12 is used. A swirling flow is generated. This swirling flow also reaches the water storage section 16, and the water in the water storage section 16 is also swung in the same direction.

On the other hand, a large amount of water sprayed through the third water spray hole 34 is quickly located because the position of the third water spray hole 34 is located rearward of the center of the water storage section 16. It rushes into 16 and applies a downward force to the water in the reservoir 16.

In the flush toilet 10 of this embodiment, the swirling flow generated by the strong force efficiently cleans the inside of the toilet bowl 12 and draws water downward from the third water spray hole 34. Based on the force, the water in the water reservoir 16 is quickly discharged together with the filth.

Further, in the flush toilet 10 of this embodiment, the toilet is washed mainly by the action of the swirling flow, and the noise due to the collision of the flush water and the entrainment of air is small, so that the flush noise is suppressed to a low level. Further, since the water collecting surface can be made larger than that of a normal flush toilet, it is possible to suppress adhesion of filth to the inner surface of the toilet bowl 12.

In this example, the second water spray hole 32 and the third water spray hole 34 are provided in the rim water passage 26A on the right side, that is, the rim water passage 26A on the side where the supply port 30 is provided. Also, there is an advantage that the downward drawing of the accumulated water is more effectively generated or performed.

FIG. 3 shows another embodiment of the present invention.
First, in the example shown in (A), the flow direction of the washing water in the rim water passage 26 is set to one direction, the second water spray hole 32 is provided on the right water passage 26A, and the third water spray hole 34 is provided on the left side. The second water spray hole 32 is provided on the front side with respect to the horizontal center line R passing through the center O, and the third water spray hole 34 is provided on the rear side. .

On the other hand, in the example shown in (B), the flow direction of the wash water in the rim water passage 26 is also set to one direction, and the second water spray hole 32 and the third water spray hole 34 are both on the left rim water passage 26B. And the center line R for the second water spray hole 32.
On the other hand, it is an example provided on the front side and the third water spray hole 34 on the rear side.

The effects of the present invention can be obtained in any of the examples shown in (A) and (B). The third water spray holes 34 are respectively arranged on the rear side of the center P of the reservoir 16 in both examples (A) and (B).

The embodiment of the present invention has been described in detail above, but this is merely an example, and the present invention is, for example, the second water spray hole 3 described above.
It is also possible to provide two or more second water spray holes 34 and a plurality of third water spray holes 34, or to configure the rim water passage so that the cleaning water is rotated clockwise. Further, the present invention is a siphon type toilet bowl,
It can be applied to various toilets such as a flush toilet, and when applied to a flush toilet, there is an advantage that the water surface can be widened as compared with the conventional flush toilet. Besides, the present invention can be configured in a form in which various changes are made without departing from the spirit of the present invention.

[Brief description of drawings]

FIG. 1A is a plan sectional view of a flush toilet which is an embodiment of the present invention, and FIG. 1B is a sectional view taken along line BB in FIG.

FIG. 2 is an operation explanatory view for explaining the operation of the flush toilet shown in FIG.

FIG. 3 is a view showing arrangement positions of a second water spray hole and a third water spray hole of a flush toilet according to another embodiment of the present invention.

[Explanation of symbols]

 10 flush toilet 12 toilet bowl 26, 26A, 26B rim water passage 28 water spray hole 30 supply port 32 second water spray hole 34 third water spray hole 35 pool surface Q, R, S center line

Claims (4)

[Claims] 1. A rim water passage is provided along the upper edge of the toilet bowl, and a plurality of water spray holes are provided along the lower surface of the rim water passage, and the wash water guided to the rim water passage is provided with these water spray holes. On the lower surface of the rim water passage on one side located on the right side or left side with respect to the longitudinal center line passing through the center of the toilet bowl in a flush toilet that is configured to be injected into the toilet bowl to wash the inside of the toilet bowl Further, a second water spray hole having an opening larger than the water spray hole and having a long hole shape in the direction in which the rim water passage extends is provided on the front side with a center line in the left-right direction passing through the center as a boundary, and On the lower surface of the rim water passage on the same side as or opposite to the second water injection hole and on the rear side with the center line as a boundary, an opening larger than the water injection hole is formed and a long hole shape is formed in the extending direction of the rim water passage. Provide at least one third water spray hole A swirling-type flush toilet bowl characterized in that 2. The flush toilet according to claim 1, wherein a flush water supply port is provided at a rear end of one of the rim water passages located on the right side or the left side with respect to the center line in the front-rear direction passing through the center of the toilet bowl. A swirling flush toilet bowl, which is formed and has a structure in which a rear end portion of the rim water passage on the other side is closed so that the flow of flush water in the rim water passage is one-way. 3. The swirling flush toilet bowl according to claim 1 or 2, wherein the third water spray hole is formed larger than the second water spray hole. 4. The swirling flush toilet bowl according to claim 1, wherein the third water spray hole is arranged rearward of a center of a water storage surface of the toilet bowl.