Water-washed toilet

Abstract

To provide a water closet capable of improving strength of a connection site between a base seat part and a skirt part.SOLUTION: A water closet in the embodiment includes a toilet bowl body, and a trap pipeline, the toilet bowl body having a bowl part, the skirt part, and the base seat part, the bowl part serving for receiving dirt, the skirt part covering a front region of the bowl part, the base seat part being provided continuously with the skirt part and able to be fixed to a floor surface, the trap pipeline being extended backward from the bowl part to enable the discharge of dirt from the bowl part, the trap pipeline having a rising pipe and a falling pipe, the rising pipe being communicated with the bottom of the bowl part and heading upward, the falling pipe being communicated with the rising pipe and heading downward, the toilet bowl body having a connection part, the connecting part connecting the base seat part to the skirt part while continuously changing at a predetermined curvature radius ranging from the base seat part to the skirt part.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The disclosed embodiments relate to a flush toilet.

Background Art

[0002] Conventionally, among so-called floor-mounted flush toilets installed on the floor surface of a toilet room, there is a type in which, in the toilet body, a skirt portion is provided that covers the front region of the bowl portion that receives dirt and opens the rear region of the bowl portion (does not cover the rear region of the bowl portion) (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the conventional flush toilet as described above, a large stress is applied to the connection portion between the pedestal portion for fixing the toilet body to the floor surface and the skirt portion during installation of the toilet (when contacting the floor surface), lifting, or rough use at a public site. As a result, the connection portion between the pedestal portion and the skirt portion may be damaged. Thus, there is room for improvement in the conventional flush toilet in terms of improving the strength of the connection portion between the pedestal portion and the skirt portion.

[0005] One aspect of the embodiment aims to provide a flush toilet capable of improving the strength of the connection portion between the pedestal portion and the skirt portion.

Means for Solving the Problems

[0006] A flush toilet according to one aspect of the embodiment includes a bowl portion for receiving dirt, a skirt portion covering a front region of the bowl portion, and a pedestal portion provided so as to be continuous from the skirt portion and fixable to the floor surface. The toilet body has a trap pipeline including a riser pipe that extends rearward from the bowl portion so as to be able to discharge the dirt in the bowl portion, communicates with the bottom of the bowl portion, and extends upward, and a down pipe that communicates with the riser pipe and extends downward. The toilet body has a connecting portion that connects the pedestal portion and the skirt portion and continuously changes with a predetermined curvature from the pedestal portion to the skirt portion.

[0007] According to such a configuration, since the connecting portion connecting the pedestal portion and the skirt portion continuously changes with a predetermined curvature from the pedestal portion to the skirt portion, in a floor-mounted flush toilet, when installing the toilet (when contacting the floor surface), lifting it, or during rough use at a public site, etc., the stress applied to the connection portion (connecting portion) between the pedestal portion and the skirt portion, which becomes a large force, can be dispersed. Thereby, breakage of the connection portion (connecting portion) between the pedestal portion and the skirt portion can be suppressed, and the strength of the connection portion (connecting portion) can be improved.

[0008] Further, in the above-described flush toilet, the predetermined curvature includes a plurality of curvatures such that the curvature changes as the connecting portion goes from the pedestal portion to the skirt portion.

[0009] According to such a configuration, in the connecting portion, for example, if the curvature of a portion where stress is concentrated is reduced, the stress can be more effectively dispersed.

[0010] Further, in the above-described flush toilet, the down pipe is provided so as to face the skirt portion, and the connecting portion has a smaller dimension in the vertical direction from the outside to the inside of the toilet body.

[0011] According to such a configuration, in the case where the downcomer that goes downward from the riser returns toward the skirt portion, the space between the trap pipe extending rearward from the bowl portion and the skirt portion can be narrowed, and the connection portion can be enlarged on the outer side portion of the toilet body. Therefore, the enlargement of the flushing toilet can be suppressed. Thereby, while suppressing the enlargement of the flushing toilet, the breakage of the connection portion (connection part) between the pedestal portion and the skirt portion can be suppressed.

[0012] Further, in the above-described flushing toilet, the downcomer is provided so as to face the skirt portion, and the connection portion is located in front of the downcomer so as to enter between the downcomer and the skirt portion as it approaches the downcomer.

[0013] According to such a configuration, in the case where the downcomer that goes downward from the riser returns toward the skirt portion, the space between the downcomer and the skirt portion can be narrowed, and the connection portion can be enlarged on the outer side portion of the toilet body. Therefore, the enlargement of the flushing toilet can be suppressed. Thereby, while suppressing the enlargement of the flushing toilet, the breakage of the connection portion (connection part) between the pedestal portion and the skirt portion can be suppressed.

Effect of the Invention

[0014] According to one aspect of the embodiment, the strength of the connection portion between the pedestal portion and the skirt portion can be improved.

Brief Description of the Drawings

[0015]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

DETAILED DESCRIPTION OF THE INVENTION

[0016] Hereinafter, with reference to the accompanying drawings, embodiments of the flushing toilet disclosed in the present application will be described in detail. Note that the present invention is not limited to the embodiments shown below.

[0017] <Overall Configuration of the Flushing Toilet> First, with reference to FIGS. 1 to 3, the overall configuration of the flushing toilet 1 according to the embodiment will be described. FIGS. 1 and 2 are perspective views showing the flushing toilet 1 according to the embodiment, respectively. Note that FIG. 1 shows a view of the flushing toilet 1 according to the embodiment as seen obliquely from the front, and FIG. 2 shows a view of the flushing toilet 1 according to the embodiment as seen obliquely from the rear. FIG. 3 is a side sectional view showing the flushing toilet 1 according to the embodiment. Note that FIG. 3 is a sectional view taken along line A-A (central section in the left-right direction) in FIG. 1.

[0018] In addition, each of the figures including FIGS. 1 to 3 shows a three-dimensional orthogonal coordinate system including the Z-axis with the vertically upward (upward) direction as the positive direction. Hereinafter, for convenience of explanation, the positive direction of the X-axis is defined as the rightward direction, the negative direction of the X-axis is defined as the leftward direction, the positive direction of the Y-axis is defined as the forward direction, and the negative direction of the Y-axis is defined as the rearward direction. For this reason, the X-axis direction may be referred to as the left-right direction, the Y-axis direction may be referred to as the front-rear direction, and the Z-axis direction may be referred to as the up-down direction.

[0019] As shown in FIGS. 1 and 2, the flushing toilet 1 is a floor-mounted type installed on the floor surface FS of the toilet room TR. Note that the flushing toilet 1 may be, for example, a wash-down type or a siphon type. In the case of a wash-down type, for example, washing water is supplied from a water supply pipe (not shown) connected to a water storage tank (not shown) serving as a water supply source to the toilet body 2 described later.

[0020] In addition, the flushing toilet 1 is made of pottery as a whole. Note that the flushing toilet 1 may be made of resin in addition to pottery, or may be manufactured by combining pottery and resin.

[0021] As shown in FIGS. 1 to 3, the flushing toilet 1 includes a toilet body 2 and a trap pipe 3. The toilet body 2 includes a bowl portion 21, a rim portion 22, a shelf portion 23, a water guide passage 24, a skirt portion 25, a pedestal portion 26, and a connection portion 27.

[0022] The bowl portion 21 is a part for receiving dirt and is formed in a bowl shape. The bottom of the bowl portion 21 becomes a water storage portion 211 and stores a predetermined amount of stored water. A trap pipe 3 described later is connected to the lower end portion of the water storage portion 211.

[0023] The rim portion 22 is disposed at the upper edge portion of the bowl portion 21 and is formed in an annular shape over the entire circumference as the upper edge portion of the bowl portion 21. As shown in FIG. 3, a shelf portion 23 is disposed below the rim portion 22. The shelf portion 23 is formed as a substantially flat surface extending outward from the upper edge portion of the bowl portion 21 inside the rim portion 22 and is formed in an annular shape over substantially the entire circumference of the bowl portion 21.

[0024] The water guide passage 24 extends forward from the water supply port 241 of the washing water and is connected to the rim water passage 221 of the rim portion 22. The water guide passage 24 extends from near the water supply port 241 disposed substantially at the center in the left-right direction at the rear of the toilet body 2 toward the bowl portion 21.

[0025] In the water guide passage 24, for example, the washing water is rectified well and the directivity of the washing water is enhanced, and the flow rectified in the direction of circulating through the rim water passage 221 from the water guide passage 24 and having a relatively strong water potential state is discharged as the washing water.

[0026] Further, the water guide passage 24 is formed such that, for example, a part of it is parallel to a part of the confluence portion of the rim water passage 221. In this case, near the outlet of the water guide passage 24, that is, near the water discharge port (not shown) of the washing water, since it substantially coincides with the direction of the flow of the washing water circulating through the rim water passage 221, the washing water from the outlet (water discharge port) of the water guide passage 24 can be made to flow around the rim water passage 221 in a state where the water potential is maintained (the flow rate and flow velocity are substantially maintained) in substantially the same turning direction as the rim water passage 221.

[0027] As shown in FIGS. 1 and 2, the skirt portion 25 is disposed so as to cover the front region of the bowl portion 21. The skirt portion 25 forms a vertical wall in the front region of the bowl portion 21. The skirt portion 25 is provided only in the front region of the bowl portion 21 and is not provided in the rear region of the bowl portion 21. For this reason, the rear region of the bowl portion 21 is open.

[0028] Note that the rear region of the bowl portion 21 refers to the region behind the position where the trap pipe 3 described later is connected to the rear surface portion 252 of the skirt portion 252 described later in a side view, while the region in front of the position where the trap pipe 3 is connected to the rear surface portion 252 of the skirt portion 25 is referred to as the front region.

[0029] The skirt portion 25 includes a side circumferential surface portion 251 and a rear surface portion 252. The side circumferential surface portion 251 covers the bowl portion 21 from one side portion on either the left or right, through the front portion, to the other side portion on either the left or right in the front region of the bowl portion 21. The rear surface portion 252 covers the rear portion in the front region of the bowl portion 21.

[0030] The pedestal portion 26 is provided behind the skirt portion 25 so as to be continuous with the skirt portion 25. The pedestal portion 26 includes an upper surface 261 that is, for example, a surface substantially orthogonal to the rear surface portion 252 of the skirt portion 25. The trap pipe 3 is disposed on the upper surface 261 of the pedestal portion 26.

[0031] In addition, the pedestal portion 26 is provided with a mounting hole 262 that penetrates the pedestal portion 26 in the upward direction. The pedestal portion 26 is fixed to the floor surface FS by attaching a fixture (not shown) to the mounting hole 262. In this way, by fixing the pedestal portion 26 to the floor surface FS, the flushing toilet 1 is fixed to the floor surface FS.

[0032] The connection portion 27 is the connection location between the pedestal portion 26 and the skirt portion 25. The connection portion 27 extends in the left - right direction along the front - end edge portion 261a (see FIG. 4) of the upper surface 261 of the pedestal portion 26 and the lower - end edge portion 252a (see FIG. 4) of the rear surface portion 252 of the skirt portion 25. The details of the connection portion 27 will be described later with reference to FIG. 4 and the like.

[0033] As shown in FIGS. 1 to 3, the trap pipeline 3 is a pipeline that extends rearward from the bowl portion 21 so as to be able to discharge the dirt in the bowl portion 21. The trap pipeline 3 includes a rising pipe 31 and a descending pipe 32.

[0034] The upstream end (front end) of the rising pipe 31 is connected to the bottom (water - accumulating portion 211) of the bowl portion 21. The rising pipe 31 communicates with the bottom (water - accumulating portion 211) of the bowl portion 21 and is a pipeline that is inclined upward, that is, rises, as it goes rearward.

[0035] The upstream end (front end) of the descending pipe 32 is connected to the downstream end (rear end) of the rising pipe 31. The descending pipe 32 communicates with the rear end of the rising pipe 31 and is a pipeline that goes downward. The descending pipe 32 is a pipeline formed so as to return forward after descending or while descending. For this reason, the descending pipe 32 includes a descending portion 321 and a forward - inclined portion 322.

[0036] The descending portion 321 is located on the upstream side of the downcomer 32 and is the part that extends downward. The forward inclined portion 322 is located on the downstream side of the downcomer 32, is connected to the lower end portion on the downstream side of the descending portion 321, and is the part that extends downward while inclining forward. In this way, the downcomer 32 is formed to head toward the front skirt portion 25 after descending. Note that the downcomer 32 may be formed to head toward the front skirt portion 25 while descending.

[0037] Also, in this way, since the downcomer 32 is formed to head toward the front skirt portion 25, that is, to return forward, the front-rear dimension of the washdown toilet 1 can be shortened. Thereby, the washdown toilet 1 can be miniaturized.

[0038] The lowermost end portion of the forward inclined portion 322, that is, the lowermost end portion of the downcomer 32, is connected to the discharge port 33 that discharges washing water and dirt from the washdown toilet 1. Note that the discharge port 33 is connected to the equipment pipe 10 that serves as an external pipe of the washdown toilet 1.

[0039] Also, the trap pipe 3 includes a first curtain plate 34a and a second curtain plate 34b, which are plate-shaped reinforcing members. The first curtain plate 34a is disposed between the riser pipe 31, the downcomer 32 (descending portion 321 and forward inclined portion 322), the rear surface portion 252 of the skirt portion 25, the upper surface 261 of the pedestal portion 26, and the connecting portion 27.

[0040] The second curtain plate 34b is disposed between the upper part of the trap pipe 3 (riser pipe 31 and downcomer 32) and the lower part at the rear of the bowl portion 21 of the toilet body 2. Also, the rear end edge portion of the second curtain plate 34b, which is not surrounded by members (is open), has a changing curvature. In this way, since the rear end edge portion of the second curtain plate 34b has a changing curvature, for example, even when a vertical force is applied, the stress applied to the rear end edge portion can be dispersed, and the strength can be improved.

[0041] In the flush toilet 1, a jet spout 4 for injecting washing water toward the trap pipe line 3 (riser pipe 31) is provided in front of the trap pipe line 3. As shown in FIG. 3, the jet spout 4 is formed at the outlet of the jet water conduit 41, and generates a siphon action by injecting the washing water of the jet water conduit 41 with a strong water flow.

[0042] <Connection part> Next, the connection part 27 will be described with reference to FIGS. 4 to 6. FIG. 4 is an enlarged perspective view showing the connection part 27. FIG. 5 is a diagram (schematic diagram) showing the vertical dimension of the connection part 27.

[0043] As described above, the connection part 27 is a connection location between the pedestal part 26 and the skirt part 25, and extends in the left-right direction along the front edge part 261a of the upper surface 261 in the pedestal part 26 and the lower edge part 252a of the rear surface part 252 in the skirt part 25.

[0044] Here, in the case of the floor-mounted flush toilet 1 where the skirt part 25 covers only the front region of the bowl part 21, a large stress is applied to the connection location between the pedestal part 26 and the skirt part 25 during the installation of the flush toilet 1 (when contacting the floor surface FS), lifting, or rough use at a public site. For example, if the connection location between the pedestal part 26 and the skirt part 25 forms a corner, stress may concentrate at the connection location and the connection location may be damaged.

[0045] Therefore, in the present embodiment, the structure is such that stress does not concentrate at the connection location (connection part 27) between the pedestal part 26 and the skirt part 25.

[0046] As shown in FIG. 4, the connection part 27 continuously changes with a predetermined curvature (curvature change) from the front edge part 261a of the upper surface 261 in the pedestal part 26 to the lower edge part 252a of the rear surface part 252 in the skirt part 25. That is, the connection part 27 is formed to curve with a predetermined curvature in a side view.

[0047] The predetermined curvature may be a constant curvature or a variable curvature from the front edge portion 261a of the upper surface 261 in the pedestal portion 26 to the lower edge portion 252a of the rear surface portion 252 in the skirt portion 25.

[0048] In the case of a variable curvature, the predetermined curvature includes a plurality of curvatures such that the curvature changes as the connecting portion 27 extends from the front edge portion 261a of the upper surface 261 to the lower edge portion 252a of the rear surface portion 252. In this way, when the predetermined curvature includes a plurality of curvatures, in the connecting portion 27, for example, by reducing the curvature at the location where stress concentrates, stress equalization can be achieved.

[0049] Also, as shown in FIG. 4, the connecting portion 27 is formed to be located in front of the forward inclined portion 322 so as to enter between the connecting portion 27 and the rear surface portion 252 of the skirt portion 25 as it approaches the forward inclined portion 322 on the downstream side of the downcomer 32. In this way, by having the connecting portion 27 enter between the forward inclined portion 322 and the rear surface portion 252, the shortest distance D between the downcomer 32 (forward inclined portion 322) and the skirt portion 25 (rear surface portion 252) can be shortened.

[0050] As shown in FIG. 5, the connecting portion 27 is formed such that the vertical dimension decreases from the outside to the inside of the toilet body 2 (see FIG. 3, etc.). That is, the connecting portion 27 is formed such that the distance from the front edge portion 261a of the upper surface 261 (see FIG. 4) in the pedestal portion 26 to the lower edge portion 252a of the rear surface portion 252 of the skirt portion 25 (see FIG. 4) becomes shorter as it goes from the outside to the inside of the toilet body 2.

[0051] Note that the outside of the toilet body 2 refers to the side in the direction away from the center of the toilet body 2 (centrifugal direction) in plan view, and the inside of the toilet body 2 refers to the side in the direction toward the center of the toilet body 2 (centripetal direction) in plan view.

[0052] Here, the connecting portion 27 changes with a constant curvature from the front edge portion 261a of the upper surface 261 of the pedestal portion 26 to the lower edge portion 252a of the rear surface portion 252 of the skirt portion 25 in a side view, for example, like an arc of a perfect circle. However, as described above, it may change with an indefinite curvature.

[0053] That is, the connecting portion 27 may change with a plurality of arbitrary curvatures from the front edge portion 261a of the upper surface 261 in the pedestal portion 26 to the lower edge portion 252a of the rear surface portion 252 in the skirt portion 25 in a side view. In this case, the connecting portion 27 has a first curvature from the front edge portion 261a of the upper surface 261 in the pedestal portion 26 to a predetermined first position, a second curvature from the first position to a predetermined second position, a third curvature from the second position to a predetermined third position, and so on, changing with a plurality of curvatures up to the lower edge portion 252a of the rear surface portion 252 in the skirt portion 25.

[0054] As described above, according to the above-described embodiment, since the connecting portion 27 connecting the pedestal portion 26 and the skirt portion 25 continuously changes with a predetermined curvature from the pedestal portion 26 to the skirt portion 25, in the floor-mounted flushing toilet 1, when the flushing toilet 1 is installed (when contacting the floor surface FS), lifted, or used roughly at a public site, etc., the stress applied to the connection portion (connecting portion 27) between the pedestal portion 26 and the skirt portion 25, which becomes a large force, can be dispersed. Thereby, breakage of the connection portion (connecting portion 27) between the pedestal portion 26 and the skirt portion 25 can be suppressed, and the strength of the connection portion (connecting portion 27) can be improved.

[0055] In addition, by including a plurality of curvatures in the predetermined curvature, in the connecting portion 27, for example, if the curvature of a portion where stress concentrates is made smaller, the stress can be more effectively dispersed.

[0056] In addition, the connecting portion 27 is formed such that the vertical dimension decreases from the outside to the inside of the toilet body 2. Thus, in the case where the down pipe 32 of the trap pipe 3 has a shape that returns toward the skirt portion 25, the space between the down pipe 32 and the skirt portion 25 can be narrowed, and the connecting portion 27 can be enlarged on the outer side portion of the toilet body 2. Therefore, an increase in the size of the flushing toilet 1 can be suppressed. As a result, while suppressing an increase in the size of the flushing toilet 1, breakage of the connection portion (connecting portion 27) between the pedestal portion 26 and the skirt portion 25 can be suppressed.

[0057] Further, the connecting portion 27 is formed to be positioned in front of the down pipe 32 (front inclined portion 322) so as to enter between the connecting portion 27 and the skirt portion 25 as the connecting portion 27 approaches the down pipe 32 (front inclined portion 322). Thus, in the case where the down pipe 32 of the trap pipe 3 has a shape that returns toward the skirt portion 25, the space between the down pipe 32 and the skirt portion 25 can be narrowed, and the connecting portion 27 can be enlarged on the outer side portion of the toilet body 2. Therefore, an increase in the size of the flushing toilet 1 can be suppressed. As a result, while suppressing an increase in the size of the flushing toilet 1, breakage of the connection portion (connecting portion 27) between the pedestal portion 26 and the skirt portion 25 can be suppressed.

[0058] In the above-described embodiment, the connecting portion 27 changes with a constant or variable curvature in a side view from the front edge portion 261a of the upper surface 261 of the pedestal portion 26 to the lower edge portion 252a of the rear surface portion 252 of the skirt portion 25. However, when the connecting portion 27 changes with a variable curvature, as shown in FIG. 6, in a side view, for example, it may change so as to transition from the maximum value to the minimum value of the curvature like a 1 / 4 circular arc of an ellipse.

[0059] Further, in this case, as shown in FIG. 6, by setting the curvature change to be like an arc with the major axis of the ellipse along the vertical direction, the shortest distance D (see FIG. 4) between the down pipe 32 (see FIG. 4) and the rear surface portion 252 (see FIG. 4) of the skirt portion 25 can be further shortened. As a result, further miniaturization of the flushing toilet 1 (see FIG. 3 etc.) can be achieved.

[0060] Further effects and modifications can be easily derived by those skilled in the art. For this reason, the broader aspects of the present invention are not limited to the specific details and representative embodiments presented and described as above. Accordingly, various changes are possible without departing from the spirit or scope of the general inventive concept defined by the appended claims and their equivalents.

Explanation of Reference Numerals

[0061] 1 Flush toilet 2 Toilet body 3 Trap pipeline 21 Bowl part 25 Skirt part 26 Pedestal part 27 Connection part 31 Rising pipe 32 Downward pipe 211 Bottom (water storage part) FS Floor

Claims

1. A toilet body having a bowl portion for receiving waste, a skirt portion covering a front region of the bowl portion, and a pedestal portion provided so as to be continuous from the skirt portion and fixable to the floor surface; A trap pipeline having a riser pipe extending rearward from the bowl portion so as to be able to discharge the waste in the bowl portion, communicating with the bottom of the bowl portion and rising upward, and a downcomer communicating with the riser pipe and extending downward; Comprising; The toilet body is; Connecting the front edge portion of the upper surface of the pedestal portion and the lower edge portion of the rear surface of the skirt portion, and having a connecting portion that continuously changes with a predetermined curvature from the front edge portion of the upper surface of the pedestal portion extending in the horizontal direction in side view to the lower edge portion of the rear surface of the skirt portion extending in the vertical direction; The downcomer is located behind the front edge portion of the pedestal portion; The connecting portion is formed so as to extend from the outside to the front of the downcomer in the toilet body; The connecting portion is; From the outside to the inside of the toilet body, the vertical dimension from the front edge portion of the upper surface of the pedestal portion to the lower edge portion of the rear surface of the skirt portion becomes smaller; A flush toilet characterized by the above.

2. The predetermined curvature is; Including a plurality of curvatures such that the curvature changes as the connecting portion goes from the front edge portion of the upper surface of the pedestal portion to the lower edge portion of the rear surface of the skirt portion; The flush toilet according to claim 1, characterized by the above.

3. The predetermined curvature is; From the outside to the inside of the toilet body, it becomes larger; The flush toilet according to claim 1, characterized by the above.

Images