Flush toilet

Abstract

To provide a flush toilet bowl device in which an insertion hole and the state of insertion of a water supply hose into the insertion hole cannot be seen by a user, thereby improving the design.SOLUTION: A flush toilet bowl device 1 according to an embodiment includes a toilet bowl body 2 and a sanitary washing device 3. The toilet bowl body has a bowl part, a drainage trap pipeline, a toilet bowl outer part 24, and an insertion hole 25. The bowl part receives dirt. The drainage trap pipeline extends from the bottom of the bowl part. The toilet bowl outer part covers the bowl part and the drainage trap pipeline. The toilet bowl outer part has a recess 241 formed in an outer surface thereof. The insertion hole is formed on the toilet bowl outer part, and a water supply hose 52 through which flush water from a water supply source flows is inserted into the insertion hole. The insertion hole is arranged in the recess. The sanitary washing device is placed on the upper surface of the toilet bowl body, to which the water supply hose inserted through the insertion hole is connected and the flush water is supplied from the water supply hose.SELECTED DRAWING: Figure 1

Description

[Technical field]

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

[0002] Conventionally, for example, in floor-standing flush toilets, water and power supply related components such as a water supply hose and a power supply hose are inserted into holes formed in the outer part of the toilet body (also called the skirt) so that they are not visible to the user, and are connected to a sanitary washing device attached to the toilet body for washing the user's private parts.

[0003] Among such flush toilets, for example, there are some that have a semicircular cutout formed in the rear edge of the toilet body, through which a water supply hose or the like is inserted (see, for example, Patent Documents 1 and 2). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2020-2579 A [Patent Document 2] China Patent Publication No. 10700370 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in conventional flush toilets as described above, when a user looks at the toilet body from the front, the cutout and the state in which a water supply hose or the like is inserted into this cutout are visible to the user, which makes it look unsightly and reduces the design value.

[0006] One aspect of the embodiment has an object to provide a flush toilet in which the insertion hole and the state in which the water supply hose is inserted into this insertion hole are not visible to the user, thereby improving the design. [Means for solving the problem]

[0007] A flush toilet according to one aspect of the embodiment comprises a toilet body having a bowl portion for receiving waste, a drain trap pipe extending from the bottom of the bowl portion, a toilet outer portion covering the bowl portion and the drain trap pipe, and an insertion hole formed in the toilet outer portion through which a water supply hose through which flushing water from a water supply source flows, and a sanitary flushing device arranged on the upper surface of the toilet body and connected to the water supply hose inserted into the insertion hole, and through which flushing water is supplied from the water supply hose, wherein the toilet outer portion has a recess formed on its outer surface, and the insertion hole is arranged in the recess.

[0008] With this configuration, when a user looks at the toilet body from the front, the insertion hole through which the water supply hose is inserted is positioned in a recess in the outer surface of the outer part of the toilet, making the front of the insertion hole higher, so the insertion hole and the insertion of the water supply hose into this insertion hole are hidden and cannot be seen by the user. In this way, by making the insertion hole and the insertion of the water supply hose into this insertion hole invisible to the user, the design can be improved.

[0009] Furthermore, a characteristic of flush toilets is that users rarely look at the toilet body from the side except during installation or cleaning. However, when a user looks at the toilet body from the front, the insertion hole and the state in which the water supply hose is inserted into this insertion hole are hidden, so the design can be improved just by the shape of the outer part of the toilet, without having to provide a cover to block the insertion hole, for example.

[0010] Furthermore, the flush toilet described above is characterized in that the outer surface of the toilet outer part is higher by one step in an area diagonally above and forward of the insertion hole when viewed from the side.

[0011] With this configuration, when a user looks at the toilet body from the front or from diagonally above the front side, the insertion hole is hidden by the outer surface which is one step higher, so that, for example, when the user opens the toilet door and sits on the flush toilet, the insertion hole and the state of the water supply hose inserted into this insertion hole are not visible to the user.

[0012] Furthermore, the above-mentioned flush toilet is characterized in that, when viewed from the side, the distance from the insertion hole to the peripheral edge of the recess in a diagonally upward direction toward the front of the insertion hole is shorter than the distance from the peripheral edge of the recess in a diagonally upward direction toward the front of the insertion hole to the upper edge of the outer part of the toilet.

[0013] With this configuration, the insertion hole can easily enter the gap between the recess and the outer surface other than the recess, which the user cannot see from the front diagonally above. Therefore, for example, when the user opens the toilet door and sits on the flush toilet, the insertion hole and the state of the water supply hose inserted into this insertion hole are not visible to the user.

[0014] Furthermore, in the above-mentioned flush toilet, the recess has a peripheral edge portion that, in a side view, is arc-shaped from an upper region of the insertion hole to a forward region of the insertion hole, and the insertion hole is positioned a predetermined distance from the peripheral edge portion and is positioned at a position that is approximately the same distance from the peripheral edge portion between the upper region and the forward region.

[0015] With this configuration, the insertion hole is hidden in the same way no matter where the user views the toilet body from, from above to the front, so the insertion hole is invisible to the user regardless of, for example, the user's height or the user's viewpoint, which changes depending on the action taken during use (when urinating or flushing). Also, because the peripheral portion of the recess is arc-shaped from the upper region to the front region of the insertion hole, for example, even if sewage drips from above, it flows along the peripheral portion, so that it is possible to prevent sewage from entering the recess and thus prevent sewage from entering the insertion hole.

[0016] Furthermore, in the flush toilet described above, the peripheral edge of the recess is, when viewed from the side, a quarter arc shape defined by the major and minor axes of a vertically elongated ellipse from the rear edge to the bottom edge of the toilet body.

[0017] According to this configuration, the peripheral portion of the recess has a gentle curve in the upper region of the insertion hole and a steep curve in the front region of the insertion hole in a side view, so that, for example, even if sewage drips from above, the sewage tends to flow forward in the upper region of the insertion hole, and the sewage that has flowed forward tends to flow downward in the front region of the insertion hole. This makes it possible to further suppress the intrusion of sewage into the recess and the intrusion of sewage into the insertion hole.

[0018] Furthermore, the above-mentioned flush toilet is characterized in that the insertion hole is positioned rearward of the bowl portion.

[0019] With this configuration, the insertion hole is located rearward of the bowl portion, so that even if sewage drips from above, it will be in front of the insertion hole, thereby preventing the sewage from entering the insertion hole.

[0020] The flush toilet described above is also characterized in that a power supply hose for supplying power to the sanitary washing device is inserted into the insertion hole.

[0021] When a sanitary washing device is operated using external power, it is common to supply power to the sanitary washing device using a power supply hose. Since most power supply hoses extend from the wall or floor of a toilet room, inserting the hose into the toilet body through an insertion hole causes the same design problems as with a water supply hose. However, with this configuration, the insertion of the power supply hose into the insertion hole is hidden from the user, improving the design. Effect of the Invention

[0022] According to one aspect of the embodiment, the insertion hole and the state in which the water supply hose is inserted into this insertion hole are not visible to the user, thereby improving the design. [Brief description of the drawings]

[0023] [Figure 1] FIG. 1 is a perspective view showing a flush toilet according to an embodiment. [Diagram 2] FIG. 2 is a perspective view showing the toilet body. [Diagram 3] FIG. 3 is a schematic side view showing the toilet body. [Figure 4] FIG. 4 is an explanatory diagram (part 1) of the arrangement of the insertion holes. [Diagram 5] FIG. 5 is an explanatory diagram (part 2) of the arrangement of the insertion holes. [Figure 6] FIG. 6 is an explanatory diagram (part 3) of the arrangement of the insertion holes. [Figure 7] FIG. 7 is an explanatory diagram showing the flow of sewage when it flows into the outer part of the toilet bowl. [Figure 8] FIG. 8(a) is a view of the flush toilet according to the embodiment seen from the front, and (b) is a view of the flush toilet according to the embodiment seen from above the front. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] Below, an embodiment of a flush toilet disclosed in the present application will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiment described below.

[0025] First, an overview of a flush toilet 1 according to an embodiment will be explained with reference to Fig. 1. Fig. 1 is a perspective view showing a flush toilet 1 according to an embodiment.

[0026] For ease of explanation, each figure including Fig. 1 may show a three-dimensional Cartesian coordinate system including a Z-axis whose positive direction is vertically upward (upward). In this case, the positive direction of the X-axis is defined as the left, the negative direction of the X-axis as the right, the positive direction of the Y-axis as the front, the negative direction of the Y-axis as the rear, the positive direction of the Z-axis as the up, and the negative direction of the Z-axis as the down. In addition, the X-axis direction is called the left-right direction, the Y-axis direction is called the front-back direction, and the Z-axis direction is called the up-down direction.

[0027] As shown in Figure 1, the flush toilet 1 comprises a toilet body 2 and a sanitary washing device (also called a toilet seat device) 3. The toilet body 2 is a so-called floor-standing type that is installed on the floor surface TF of the toilet room TR. The toilet body 2 is made of ceramic. Note that the toilet body 2 is not limited to being made of ceramic, and may be made of resin, or a combination of ceramic and resin, for example.

[0028] The toilet body 2 has a toilet outer part 24 provided to cover the front and left and right sides of a bowl part 21 (see FIG. 2) and a drain trap pipe 23, which will be described later. The toilet outer part 24 has a recess 241 and an insertion hole 25, which will be described later. Details of the toilet body 2 and the toilet outer part 24 will be described later using FIG. 2 and FIG. 3.

[0029] The sanitary washing device 3 is installed on the top surface of the toilet body 2. The sanitary washing device 3 comprises a main body 31, a toilet seat (not shown), and a lid 32. The main body 31 is located at the rear of the top surface of the toilet body 2, and supports the toilet seat and lid 32 so that they can rotate up and down. The main body 31 has a sanitary washing system functional part that functions as a sanitary washing part that washes the private parts of a user seated on the toilet seat.

[0030] The sanitary washing system functional section is provided with a private parts washing device (not shown) including a nozzle device (not shown) that sprays washing water toward the private parts of the user above the bowl section 21. The sanitary washing system functional section is also provided with a water storage section (not shown) that stores washing water to be supplied to the private parts washing device, a heater (not shown) that heats the washing water in the water storage section to an appropriate temperature to turn it into hot water, a ventilation fan (not shown), a deodorizing fan (not shown), a hot air fan (not shown), a control section (not shown) that controls each of these sections, and the like.

[0031] The toilet seat is located in front of the main body 31, and is what a user sits on when using the flush toilet 1. The toilet seat can be opened and closed by rotating with the main body 31 as a fulcrum. The lid 32, like the toilet seat, is located in front of the main body 31, and covers the top surface, including the bowl 21, of the toilet body 2 from above. Like the toilet seat, the lid 32 can be opened and closed by rotating with the main body 31 as a fulcrum. When closed, the lid 32 covers the top surface of the toilet body 2 from above, and also covers the toilet seat from above.

[0032] The flush toilet 1 may have a toilet flushing configuration in which flush water stored in a water tank is supplied to the bowl portion 21 using supplementary pump pressure, or it may have a so-called gravity-fed configuration in which flush water stored in a water tank is supplied to the bowl portion 21 using gravity, or it may have a direct water pressure configuration in which the water supply pressure of tap water is directly used, or a flush valve configuration.

[0033] Here, a water supply unit (e.g., a stop valve) 51 connected to a water supply source such as a water line is provided on a wall TW of the toilet room TR. A water supply hose 52 is connected to the water supply unit 51. The water supply hose 52 is connected to the sanitary washing device 3, and supplies washing water to the sanitary washing device 3 for washing the private parts of the body of a user seated on the toilet seat. This "sanitary washing device" also includes a water storage tank (not shown) that supplies water to the bowl portion 21.

[0034] A power supply unit, that is, a so-called power outlet (not shown) is provided on the wall TW of the toilet room TR. A power supply hose (also called a power cord) 62 is connected to the power supply unit via a power plug 61. The power supply hose 62 supplies power to the sanitary washing device 3.

[0035] The water supply hose 52 and the power supply hose 62 are inserted through insertion holes 25, described below, formed in the toilet outer part 24, and connected to the sanitary washing device 3 (main body part 31) inside the toilet outer part 24.

[0036] Next, the toilet body 2 will be described with reference to Figures 2 and 3. Figure 2 is a perspective view showing the toilet body 2. Figure 3 is a schematic side view showing the toilet body 2. As shown in Figures 2 and 3, the toilet body 2 comprises a bowl portion 21, a rim portion 22, a drain trap pipe 23, and a toilet outer portion 24.

[0037] Bowl portion 21 is a portion that receives waste, and is formed in a concave shape. Rim portion 22 is formed on the upper edge of bowl portion 21. Rim portion 22 has a rim water outlet 221 that outlets flush water. In rim portion 22, flush water discharged from rim water outlet 221 flows along the upper edge (rim portion 22) of bowl portion 21, forming a swirling flow within bowl portion 21. A water conduit (not shown) formed upstream is connected to rim water outlet 221, and flush water is supplied via the water conduit from a water supply source (such as a water supply), for example.

[0038] Drain trap pipe 23 is connected to the bottom of bowl portion 21, extends rearward from the bottom of bowl portion 21, and is a pipe that drains waste within bowl portion 21 to piping outside toilet body 2. If flush toilet 1 is, for example, a hybrid type, a jet water outlet is formed at the bottom of bowl portion 21 that discharges flush water pressurized by a pressure pump toward inlet portion 231 of drain trap pipe 23.

[0039] As described above, the toilet outer part 24 is provided so as to cover the front and the left and right sides of the bowl part 21 and the front and the left and right sides of the drain trap pipe 23. The toilet outer part 24 is formed with an insertion hole 25 through which the water supply hose 52 and the power supply hose 62 are inserted. The insertion hole 25 is formed, for example, on either the right or left side surface of the toilet outer part 24.

[0040] In addition, a recess 241 is formed on the outer surface of the outer portion 24 of the toilet bowl. The recess 241 has a peripheral edge portion 241a that is arcuate from the upper region to the front region of the insertion hole 25 in a side view of the toilet bowl body 2. The recess 241 is partitioned from other parts of the outer portion 24 of the toilet bowl by the peripheral edge portion 241a and is one step lower than other parts of the outer portion 24 of the toilet bowl.

[0041] The insertion hole 25 is formed in the recess 241. The insertion hole 25 is disposed at a predetermined position within the recess 241. Also, the insertion hole 25 is disposed behind the bowl portion 21.

[0042] Next, the arrangement of the insertion hole 25 will be described with reference to FIGS. 4 to 7. FIGS. 4 to 6 are explanatory views of the arrangement of the insertion hole. FIG. 7 is an explanatory view of the flow pattern of the sewage W when the sewage W flows to the outer portion 24 of the toilet bowl.

[0043] As shown in FIG. 4, in a side view of the toilet bowl body 2, the insertion hole 25 is surrounded by the peripheral edge portion 241a of the recess 241 from at least the upper region to the front region of the insertion hole 25 (the region indicated by hatching in the figure). That is, the outer surface of the outer portion 24 of the toilet bowl is one step higher in the diagonally upper front region of the insertion hole 25 in a side view of the toilet bowl body 2. For this reason, as shown in the figure, when the user views the toilet bowl body 2 from diagonally above in the front side, the insertion hole 25 is hidden by the outer surface of the outer portion 24 of the toilet bowl that is one step higher.

[0044] Also, the insertion hole 25 is disposed within the recess 241 at a predetermined distance from the peripheral edge portion 241a of the recess 241. As shown in FIG. 5, in a side view of the toilet bowl body 2, the distance D1 from the insertion hole 25 to the peripheral edge portion 241a of the recess 241 in the diagonally upper front direction of the insertion hole 25 is shorter than the distance D2 from the peripheral edge portion 241a of the recess 241 to the upper end edge portion 242 of the outer portion 24 of the toilet bowl in the diagonally upper front direction of the insertion hole 25 (D1 < D2).

[0045] As described above, the insertion hole 25 is disposed at a predetermined distance from the peripheral portion 241a of the recess 241. As shown in Fig. 6, the insertion hole 25 is preferably disposed at a position that is approximately the same distance D3 from the peripheral portion 241a between the upper region of the insertion hole 25 and the front region. Therefore, as shown in the figure, the insertion hole 25 is hidden by the outer surface of the toilet outer part 24 when the user views the toilet body 2 from either the front side or diagonally above.

[0046] 6, the peripheral portion 241a of the recess 241 extends from the rear edge to the lower edge of the toilet body 2 in a side view of the toilet body 2. The peripheral portion 241a of the recess 241 is preferably in the shape of a quarter arc defined by the major axis L1 and minor axis L2 of the vertically elongated ellipse O.

[0047] In this way, by making the peripheral portion 241a of the recess 241 into a ¼ arc shape of a vertically elongated ellipse O, in a side view of the toilet body 2, a gentle curve is formed in the upper region of the insertion hole 25 and a steep curve is formed in the front region of the insertion hole 25. For this reason, as shown in Fig. 7, when wastewater W1 such as urine of a user drips from the upper region of the insertion hole 25, the wastewater W1 is more likely to flow forward in the upper region of the insertion hole 25, and the wastewater W1 that has flowed forward is more likely to flow downward in the front region of the insertion hole 25.

[0048] Figure 8(a) is a view of the flush toilet 1 according to the embodiment as seen from the front. Figure 8(b) is a view of the flush toilet 1 according to the embodiment as seen from above the front side. As shown in Figure 8(a), when the flush toilet 1 is viewed from the front, the insertion hole 25 is hidden by the toilet outer part 24 and cannot be seen by the user. Furthermore, parts of the water supply hose 52 and power supply hose 62 are also hidden by the toilet outer part 24 and cannot be seen by the user.

[0049] 8(b), when the flush toilet 1 is viewed from above the front side at eye level of a user (for example, a user urinating while standing), the insertion hole 25 is hidden by the toilet outer part 24 and cannot be seen by the user. Furthermore, portions of the water supply hose 52 and power supply hose 62 are also hidden by the toilet outer part 24 and cannot be seen by the user.

[0050] As explained above, with the flush toilet 1 according to the embodiment described above, when a user looks at the toilet body 2 from the front, the insertion hole 25 through which the water supply hose 52 is inserted is positioned in the recess 241 in the outer surface of the toilet outer part 24, making the front of the insertion hole 25 higher, and therefore the insertion hole 25 and the insertion state of the water supply hose 52 and the power supply hose 62 into this insertion hole 25 are hidden and cannot be seen by the user. In this way, by making the insertion hole 25 and the insertion state of the water supply hose 52 and the power supply hose 62 into this insertion hole 25 invisible to the user, the design can be improved.

[0051] Furthermore, when a user looks at the toilet body 2 from the front, the insertion hole 25 and the insertion state of the water supply hose 52 and the power supply hose 62 into this insertion hole 25 are hidden, so the design can be improved just by the shape of the toilet outer part 24, without having to provide a cover to block the insertion hole 25, for example.

[0052] Furthermore, when a user views the toilet body 2 from the front or from diagonally above the front side, the insertion hole 25 is hidden by the raised outer surface of the toilet outer part 24, and therefore, for example, when the user opens the door to the toilet room TR and sits down on the flush toilet 1, the insertion hole 25 and the insertion state of the water supply hose 52 and the power supply hose 62 into this insertion hole 25 are not visible to the user.

[0053] Furthermore, by arranging the insertion hole 25 at a position where the distance D1 from this insertion hole 25 to the peripheral portion 241a of the recess 241 in the diagonally upward front direction of the insertion hole 25 is shorter than the distance D2 from the peripheral portion 241a of the recess 241 to the upper edge portion 242 of the toilet outer portion 24 in the diagonally upward front direction of the insertion hole 25, the insertion hole 25 can easily enter the gap between the recess 241 and the outer surface other than the recess 241 that is not visible to the user from diagonally upward front side. As a result, for example, when the user opens the door to the toilet room TR and sits on the flush toilet 1, the insertion hole 25 and the state in which the water supply hose 52 and the power supply hose 62 are inserted into this insertion hole 25 are not visible to the user.

[0054] Furthermore, by arranging the insertion hole 25 at a position that is approximately the same distance D3 from the peripheral portion 241a between the upper region and the front region of the insertion hole 25, the insertion hole 25 is hidden in the same manner no matter from which position the user views the toilet body 2 from above to the front. For this reason, the insertion hole 25 is invisible to the user, regardless of the user's height or the user's viewpoint, which changes depending on the action taken during use (when urinating or flushing).

[0055] In addition, since the peripheral portion 24a of the recess 241 is arc-shaped from the upper region to the front region of the insertion hole 25, even if sewage W1 drips from above, it flows along the peripheral portion 241a, thereby preventing the sewage W1 from entering the recess 241 and preventing the sewage W1 from entering the insertion hole 25.

[0056] Furthermore, by forming the peripheral portion 241a of the recess 241 into a 1 / 4 arc shape of a vertically elongated ellipse O, in a side view of the toilet body 2, the upper region of the insertion hole 25 has a gentle curve and the front region of the insertion hole 25 has a steep curve, so that even if the sewage W1 drips from above, the sewage W1 tends to flow forward in the upper region of the insertion hole 25, and the sewage W1 that has flowed forward tends to flow downward in the front region of the insertion hole 25. This makes it possible to further suppress the intrusion of the sewage W1 into the recess 241, and further suppress the intrusion of the sewage W1 into the insertion hole 25.

[0057] In addition, since the insertion hole 25 is positioned rearward of the bowl portion 21, even if sewage W1 drips from above, it will be in front of the insertion hole 25, so that the sewage W1 can be prevented from entering the insertion hole 25.

[0058] In the above embodiment, the peripheral portion 241a of the recess 241 is preferably in the shape of a 1 / 4 arc of a vertically elongated ellipse O, but the peripheral portion 241a of the recess 241 may be in the shape of an arc other than a 1 / 4 arc, such as a 3 / 4 arc of a vertically elongated ellipse O. The peripheral portion 241a of the recess 241 may be in the shape of a 1 / 4 arc of a circle (a perfect circle). The peripheral portion 241a of the recess 241 may be in the shape of an arc other than a 1 / 4 arc of a circle (a perfect circle).

[0059] Also, the peripheral portion 241a of the recess 241 may be, for example, in the shape of a vertically elongated ellipse. That is, the recess 241 formed on the outer surface of the toilet outer portion 24 may be in the shape of a vertically elongated ellipse.

[0060] Further advantages and modifications may readily occur to those skilled in the art. Thus, the invention in its broader aspects is not limited to the specific details and representative embodiments shown and described above. Accordingly, various modifications may be made without departing from the spirit or scope of the general inventive concept as defined by the appended claims and equivalents thereof. [Explanation of symbols]

[0061] 1 flush toilet 2 Toilet bowl body 3 Sanitary cleaning equipment 21 Bowl section 23 Drain trap line 24 Toilet bowl exterior 25 Insertion hole 52 Water supply hose 62 Power supply hose 241 Recess 241a Periphery 242 Upper edge D1 Distance D2 distance D3 Distance L1 long axis L2 short axis O Vertical oval

Claims

1. a toilet body having a bowl portion for receiving waste, a drain trap pipe extending from the bottom of said bowl portion, a toilet outer portion covering said bowl portion and said drain trap pipe, and an insertion hole formed in said toilet outer portion through which a water supply hose through which flush water from a water supply source flows is inserted; a sanitary washing device that is disposed on an upper surface of the toilet body, to which the water supply hose inserted through the insertion hole is connected and to which washing water is supplied from the water supply hose; Equipped with The toilet outer portion has a recess formed on its outer surface, The insertion hole is disposed in the recess, The toilet outer part is provided so as to cover the front and the left and right sides of the bowl part and the drain trap pipe line, and the insertion hole is formed on either the left or right side of the toilet outer part. A flush toilet characterized by:

2. The outer surface of the toilet outer part is raised by one step in a diagonally upper area in front of the insertion hole when viewed from the side.

2. The flush toilet according to claim 1,

3. A toilet body having a bowl portion for receiving waste, a drain trap pipe extending from the bottom of said bowl portion, a toilet outer portion covering said bowl portion and said drain trap pipe, and an insertion hole formed in said toilet outer portion through which a water supply hose through which flushing water from a water supply source flows is inserted; a sanitary washing device that is disposed on an upper surface of the toilet body, to which the water supply hose inserted through the insertion hole is connected and to which washing water is supplied from the water supply hose; Equipped with The toilet outer portion has a recess formed on its outer surface, The insertion hole is disposed in the recess, The recess has a peripheral edge portion that is arc-shaped from an upper region of the insertion hole to a front region of the insertion hole in a side view, The insertion hole is disposed at a predetermined distance from the peripheral portion, and is disposed at a position that is approximately the same distance from the peripheral portion in a region between a vertically upward direction as viewed from the insertion hole and a horizontally forward direction as viewed from the insertion hole in a side view. A flush toilet characterized by:

4. The peripheral edge of the recess is in the shape of a quarter arc defined by the major and minor axes of a vertically elongated ellipse from the rear edge to the bottom edge of the toilet body in a side view.

4. The flush toilet according to claim 3.

5. The insertion hole is disposed rearward of the bowl portion. The flush toilet according to any one of claims 1 to 4, characterized in that

6. A power supply hose for supplying power to the sanitary washing device is inserted into the insertion hole. The flush toilet according to any one of claims 1 to 5, characterized in that

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