Water closet

Abstract

To provide a water closet that allows easy visual confirmation from the lateral side of the toilet bowl body regarding the positioning state and connection state of the outlet part of the drain trap pipeline relative to the drain socket during installation, thereby improving workability.SOLUTION: The water closet 1 of the present invention comprises: a ceramic toilet bowl body 2 including a bowl part 8 for receiving waste, a rim part 10 provided at an upper edge of the bowl part, and a drain trap pipeline 12a for discharging waste from the bowl part; and a drain socket 6 connecting an outlet part 12c of the drain trap pipeline to a wall-side or floor-side drain pipe D. The toilet bowl body is provided with a front grip part 16 and a rear grip part 18 at front and rear separated positions, which can be grasped by a builder's left hand LH and right hand RH respectively. The rear grip part is positioned offset to one lateral side relative to the center position in the left-right direction of the toilet bowl body in plan view.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a flush toilet, and more particularly to a flush toilet that is connected to a drain pipe on the wall or floor. [Background technology]

[0002] Conventionally, flush toilets have been known in which a ceramic toilet body is connected to a drain pipe on the wall or floor via a drain socket, as described in Patent Document 1, for example. In such conventional flush toilets, when connecting the ceramic toilet body to a drain socket connected to a drain pipe on the floor or wall during installation, the installer holds the toilet body with both hands and aligns the toilet body's outlet (the outlet of the drain trap pipe) with the inlet of the drain socket connected to the drain pipe. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2020-193459 Summary of the Invention [Problem to be solved by the invention]

[0004] In such conventional flush toilets, the ceramic toilet body is relatively heavy, so the installer who connects the toilet body to the floor or wall drain pipe via the drain socket must lift it with both hands. However, with conventional flush toilets, there is a problem in that, for example, if the installer holds the toilet body with both hands parallel to each other, it becomes difficult to work while visually checking from the side of the toilet body how the outlet of the drain trap pipe of the toilet body is being attached to the inlet of the drain socket. Therefore, in recent years, a key issue has become how to efficiently carry out construction work while easily visually checking the positioning and connection status of the outlet of the drain trap pipe of the toilet body relative to the drain socket from the side of the toilet body during construction.

[0005] Therefore, the present invention has been made to solve the problems of the conventional technology mentioned above and the issues that have been required in recent years, and aims to provide a flush toilet that allows the positioning and connection state of the outlet of the drain trap pipe relative to the drain socket during installation to be easily visible from the side of the toilet body, thereby improving installation ease. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems, the present invention provides a flush toilet that is connected to a wall-side or floor-side drain pipe, and has a ceramic toilet body that has a bowl portion that receives waste, a rim portion provided on the upper edge of the bowl portion, and a drain trap pipe that discharges waste from the bowl portion, and a drain socket that connects the outlet portion of the drain trap pipe to the wall-side or floor-side drain pipe, and is characterized in that at positions spaced apart from each other in the front and back of the toilet body, there are provided a front gripping portion and a rear gripping portion that can be grasped with one hand and the other hand of the installer, and the rear gripping portion is located in a position that is biased to one side or the other of the center position of the toilet body in the left-right direction when viewed in a plane. In the present invention configured in this manner, a front gripping portion and a rear gripping portion that can be grasped with one hand and the other hand of the installer are provided at positions spaced apart in the front-to-back direction of the toilet body, so that when connecting the outlet portion of the drain trap pipe of the toilet body to the drain socket connected to the drain pipe on the wall or floor side during installation, the installer can grasp and hold the front gripping portion and the rear gripping portion with both hands. In addition, since the rear gripping portion is located to one side of the center position of the toilet body in the left-right direction when viewed from above, the installer can easily adjust his or her own posture and the posture of the toilet body while holding the front and rear gripping portions with both hands, and look to the side of the toilet body. Therefore, the positioning and connection state of the outlet of the drain trap pipe relative to the drain socket during installation can be easily seen from the side of the toilet body, improving installation efficiency.

[0007] In the present invention, preferably, the rear grip portion includes a finger grip portion that can be lifted vertically and is formed in a stepped shape. In the present invention configured in this manner, the fingerhold portion of the rear gripping portion can be lifted vertically and is formed in a stepped shape, so that the installer can easily lift it vertically by grasping the rear gripping portion with their fingers hooked on the fingerhold portion. Therefore, the installer can easily adjust his or her own posture and the posture of the toilet body while holding the front gripping portion and the rear gripping portion with both hands, further improving ease of installation.

[0008] In the present invention, preferably, the rear gripping portion has a side wall surface provided on the outside of the rim portion on one of the left and right sides of the toilet body and on the rear side, and this side wall surface is inclined from the left and right direction or the front and rear direction of the toilet body toward the center of the toilet body so as to follow the peripheral surface of the rim portion of the toilet body when viewed in a plane. In the present invention configured in this manner, the side wall surface of the rear gripping portion, which is located on the outside of the rim portion on one of the left and right sides of the toilet body and on the rear side, is inclined from the left-right or front-to-back direction of the toilet body toward the center of the toilet body in a plan view so as to follow the peripheral surface of the rim portion of the toilet body.Therefore, the installer can easily pull the toilet body toward the installer by grasping the rear gripping portion and pulling it toward the center of the toilet body. Therefore, when lifting the toilet body by grasping the rear gripping portion during installation, it becomes easier to lift and the position and posture of the toilet body can also be easily adjusted, further improving installation ease.

[0009] In the present invention, the front gripping portion is preferably provided at the inlet portion of the drain trap pipe line or on the periphery of the rim portion. In the present invention configured in this manner, the front gripping portion is provided at the entrance of the drain trap pipe or on the periphery of the rim portion, so that the drain trap pipe or part of the rim portion, which are essential components of the toilet body, can be used as the front gripping portion. Therefore, there is no need to provide a separate front grip portion other than the essential components of the toilet body (the drain trap pipe and the rim portion).

[0010] In the present invention, preferably, the center of gravity of the toilet body is located in a position offset to one side of the left or right center position of the toilet body in a plan view, and the rear grip portion is located on the same side as the center of gravity of the left or right center position of the toilet body. In the present invention configured in this manner, the center of gravity of the toilet body is located to one side of the left or right center position of the toilet body in a plan view, and the rear gripping portion is on the same side as the center of gravity of the toilet body in the left or right center position, so the relative positions of the center of gravity of the toilet body and the rear gripping portion are closer than when the rear gripping portion is not on the same side as the center of gravity of the toilet body in the left or right center position. Therefore, when lifting the toilet body by grasping the rear gripping portion during installation, it becomes easier to lift and the position and posture of the toilet body can also be easily adjusted, further improving installation ease.

[0011] In the present invention, the finger grip portion is preferably made of ceramic and has a gripping surface with a glaze applied to its surface, and the surface roughness of this gripping surface is set to be greater than the surface roughness of the glazed surface applied to the surface of the toilet body other than the rear grip portion. In the present invention configured in this manner, the finger grip portion of the rear grip portion is made of ceramic and has a gripping surface with a glaze applied to its surface, and the surface roughness of this gripping surface is set to be greater than the surface roughness of the glaze surface applied to the surface of the toilet body other than the rear grip portion.Therefore, when an installer holds the rear grip portion with their fingers hooked on the finger grip portion and lifts it, their fingers hooked on the finger grip portion are less likely to slip on the gripping surface. Therefore, the toilet body can be reliably lifted during installation, further improving installation efficiency.

[0012] In the present invention, the gripping surface preferably has a maximum width in the short side direction set to 20 mm. In the present invention configured in this manner, the maximum width in the short direction of the gripping surface of the finger grip portion is set to 20 mm, so the maximum width in the short direction of the gripping surface can be set compactly to about the length of the first joint of the operator's finger. Therefore, the surface area of the gripping surface of the finger grip portion can be minimized, and the space around the rear grip portion can be secured. In addition, by setting the maximum width in the short direction of the gripping surface of the finger hook to 20 mm, when the installer places their fingers on the finger hook and grasps the rear gripping portion while lifting, they can securely grasp the object with their fingers in firm contact with the gripping surface of the finger hook. Therefore, the toilet body can be reliably lifted during installation, further improving ease of installation. [Effects of the Invention]

[0013] According to the flush toilet of the present invention, the positioning and connection state of the outlet of the drain trap pipe relative to the drain socket can be easily seen from the side of the toilet body during installation, improving installation efficiency. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. 1 is a plan view of a flush toilet according to an embodiment of the present invention. [Figure 2] FIG. 2 is an exploded rear view of a flush toilet according to an embodiment of the present invention. [Figure 3] FIG. 1 is a partially enlarged perspective view of the rear grip portion of the toilet body of a flush toilet according to an embodiment of the present invention, viewed from diagonally below and behind. [Figure 4] FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 2. DETAILED DESCRIPTION OF THE INVENTION

[0015] A flush toilet according to one embodiment of the present invention will now be described with reference to the accompanying drawings. First, Figures 1 and 2 show a plan view and an exploded rear view, respectively, of a flush toilet according to one embodiment of the present invention. As shown in Figures 1 and 2, a flush toilet 1 according to one embodiment of the present invention comprises a ceramic toilet body 2 that is placed on the floor F, a tank device 4 located behind it, and a drain socket 6 that connects the toilet body 2 to a floor-side drain pipe D that extends from below the floor F to above it.

[0016] Here, the flush toilet 1 of this embodiment is installed so that the bottom surface of the toilet body 2 comes into contact with the floor surface F, so-called an example of a "floor-standing flush toilet" will be described. However, as a variation of the flush toilet 1 of this embodiment, it is also possible to apply it to a so-called "wall-hung flush toilet" configuration in which the bottom surface of the toilet body 2 is positioned above and spaced apart from the floor surface F, and the rear end of the toilet body 2 is fixed to the wall surface behind it. Furthermore, in this embodiment, an example of a "floor-standing flush toilet" with a "floor-side drainage system" will be described, in which the toilet body 2 of a floor-standing flush toilet 1 is connected to a floor-side drain pipe (floor-side drain pipe D) via a drain socket 6, and wastewater discharged from the toilet body 2 is drained into the floor-side drain pipe D via the drain socket 6. However, as another variation of the flush toilet 1 of this embodiment, the wastewater discharged from the toilet body 2 of a floor-standing flush toilet 1 is discharged via the drain socket 6 into a wall-side drain pipe (not shown) that is installed so as to extend forward from the back side of the wall at the rear of the toilet body 2, and can also be applied to a so-called "wall-side drainage system" form of a "floor-standing flush toilet." Furthermore, as yet another variation of the flush toilet 1 of this embodiment, it can also be applied to a "wall-side drainage system" configuration of a so-called "wall-hung flush toilet."

[0017] Next, as shown in Figures 1 and 2, the toilet body 2 comprises a bowl portion 8 for receiving waste, a rim portion 10 formed on the upper edge of the bowl portion 8, a drain trap portion 12 extending from an inlet portion 12a connected to the bottom of the bowl portion 8 and forming a drain trap pipe 12b for discharging waste within the bowl portion 8, and a skirt portion 14 provided to cover the front and left and right sides of the bowl portion 8.

[0018] As shown in Figures 1 and 2, the tank device 4 employs a tank device that includes a water storage tank (not shown) that stores flushing water supplied from a water supply source (not shown) such as a tap, and a pump (not shown) that pressurizes the flushing water in the water storage tank (not shown) to the toilet body 2, but as the details of these are the same as those of conventional tank devices, explanations thereof will be omitted. In this embodiment, the tank device 4 may take the form of a so-called gravity-fed water storage tank, in which flush water stored in a water storage tank (not shown) is supplied to the toilet body 2 using gravity. Alternatively, as a device other than the tank device 4 that supplies flush water to the toilet body 2, a direct water pressure type or flush valve type may be adopted, which directly uses the water supply pressure of tap water to supply it directly to the toilet body 2.

[0019] Next, as shown in Figure 2, the drain socket 6 comprises a base 6a installed on the floor surface F, a main body 6c forming an internal flow path 6b extending upward from the center of the left and right sides of the base 6a, an inlet 6d provided at the upper end of the main body 6c (the upstream end of the internal flow path 6b), a horizontal pipeline 6e extending forward from the lower end of the main body 6c (the downstream end of the internal flow path 6b), and a connecting member (not shown) connecting the front end (downstream end) (not shown) of the horizontal pipeline 6e to the upstream end of the floor-side drain pipe D. Also, as shown in Figure 2, the inlet portion 6d of the drain socket 6 is provided with a circular elastic seal connecting member 6f made of a rubber material or the like, and the outlet portion 12c of the drain trap pipe line 12b in the drain trap portion 12 of the toilet body 2 is inserted into this elastic seal connecting member 6f to form a watertight connection. As a result, when the outlet portion 12c of the drain trap pipe 12b is watertightly connected to the elastic seal connecting member 6f of the inlet portion 6d of the drain socket 6, the inner diameter d1 of the elastic seal connecting member 6f matches the outer diameter d2 of the outlet portion 12c of the drain trap pipe 12b of the toilet body 2, and the centers of the opening cross sections of the inlet portion 6d of the drain socket 6 and the outlet portion 12c of the drain trap pipe 12b match. Incidentally, when installing the toilet body 2 of the flush toilet 1 on the floor F during construction, the installer lifts up the toilet body 2 and moves the outlet 12c of the drain trap pipe 12b from above to below the inlet 6d of the drain socket 6, with the central axis A1 of their opening cross sections aligned. This causes the outlet 12c of the drain trap pipe 12b to be inserted and fitted into the inlet 6d of the drain socket 6.

[0020] Next, as shown in Figures 1 and 2, a front gripping portion 16 and a rear gripping portion 18 are provided at positions spaced apart from each other in the front and rear of the toilet body 2, respectively, so that the installer can grasp them with one hand (left hand LH) and the other hand (right hand RH). First, as shown in Figure 1, the front gripping portion 16 is located on the left-right central axis A1 that bisects the toilet body 2 in the left-right direction in a plan view, and at the inlet portion 12a of the drain trap pipe 12b rearward of the front-to-back central axis A2 that bisects the bowl portion 8 in the front-to-back direction. In addition, for the front gripping portion 16, instead of using the inlet portion 12a of the drain trap pipe line 12b, the inner or outer peripheral edge of the rim portion 10 on one side of the left and right central axis A1 of the toilet body 2 (on the left side when looking at the toilet body 2 from the front) and forward of the front-to-back central axis A2 may be used.

[0021] On the other hand, as shown in Figure 1, the rear gripping portion 18 is located at a position biased to the other left or right side (to the right when viewing the toilet body 2 from the front) of the left-right central axis A1 (the left-right central position P1 of the toilet body 2) when viewed from above the toilet body 2. More specifically, as shown in Figures 1 and 2, the rear gripping portion 18 is provided on the rim portion 10 rearward of the upper end 14b of the rear end surface 14a of the skirt portion 14 on the other side of the toilet body 2 (the right side when looking at the toilet body 2 from the front). Also, as shown in Figure 1, when viewed in a plane, the center of gravity G of the toilet body 2 is positioned to the other left or right side (to the right when looking at the toilet body 2 from the front) of the left-right central axis A1 of the toilet body 2 (the left-right central position P1 of the toilet body 2). As a result, the rear gripping portion 18 is located on the same side as the center of gravity G with respect to the left-right central axis A1 of the toilet body 2 (the center position P1 in the left-right direction of the toilet body 2).

[0022] Next, FIG. 3 is a partially enlarged perspective view of the rear grip portion of the toilet body of a flush toilet according to one embodiment of the present invention, viewed from diagonally below and behind, and FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 1 to 4, the rear gripping portion 18 has a side wall surface 18a provided on one of the left and right sides of the toilet body 2 (the right side when viewing the toilet body 2 from the front) and on the outside of the inner circumferential surface 10a (see FIG. 4) of the rear side rim portion 10. In the plan view shown in FIG. 4, this side wall surface 18a is provided at a position that forms a predetermined thickness t1 in the out-of-plane direction with respect to the inner circumferential surface 10a of the rim portion 10 of the toilet body 2, and is provided so as to follow the circumferential direction of the inner circumferential surface 10a of the rim portion 10. In addition, in the plan view shown in Figures 1 and 4, the tangent T to the side wall surface 18a of the rear gripping portion 18 is inclined toward the center O of the bowl portion 8 of the toilet body 2 with respect to each of the tangent T1 extending in the left-right direction at the rear end 10c of the upper surface (rim upper surface 10b) of the rim portion 10 of the toilet body 2, and the tangent T2 extending in the front-to-rear direction at the upper end 14b of the rear end surface 14a of the skirt portion 14 of the toilet body 2. As a result, the entire rear gripping portion 18 is provided tilted toward the center O of the toilet body 2 from the left-right and front-rear directions of the toilet body 2 in the plan view shown in FIGS.

[0023] Next, as shown in FIGS. 2 to 4, the rear gripping portion 18 is provided with a finger grip portion 20 that can be lifted in the vertical direction and is formed in a stepped shape. The finger grip portion 20 has a bottom gripping surface 22 that forms its bottom surface, and an outer gripping surface 24 that extends upward from the outer edge of the bottom gripping surface 22 to the back side (top surface 10d) of the rim top surface 10b, and on the outside of the outer gripping surface 24 is provided an outermost surface 26 that is partially cut out so that the back side of the outer gripping surface 24 is exposed. As a result, the finger grip portion 20 is formed in a stepped shape from the bottom grip surface 22 to the outer grip surface 24, making it easy for the installer to hook the fingers of his / her right hand RH onto the finger grip portion 20 when lifting the toilet body 2 vertically during installation.

[0024] Next, as shown in FIGS. 2 to 4, the bottom gripping surface 22 and the outer gripping surface 24 of the finger grip portion 20 are made of ceramic, and the surfaces thereof are coated with glaze. In addition, the surface roughness of the bottom gripping surface 22 and the outer gripping surface 24 is set to be greater than the surface roughness of the glaze surface applied to surfaces other than the rear gripping portion 18 of the toilet body 2 (such as the surfaces of the bowl portion 8 and rim portion 10). Furthermore, as shown in Figures 3 and 4, when viewed from the bottom, the circumferential direction of the side wall surface 18a and the bottom gripping surface 22 of the rear gripping portion 18 is defined as the longitudinal direction L0, and the maximum width W in the short direction S0 perpendicular to the tangent T0 of the side wall surface 18a (the maximum width W in the short direction of the bottom gripping surface 22) is preferably set to 12 mm to 30 mm, and most preferably set to 20 mm.

[0025] 3 and 4, the portion P0 of the bottom gripping surface 22 where the width W in the short-side direction S0 is at its maximum is a protruding portion P0 located rearward of the upper end 14b of the rear end surface 14a of the skirt portion 14. The outer gripping surface 24 above this protruding portion P0 is formed so that, in a plan view, the front and rear surfaces 24a, which are linearly formed from the front to the rear, transition to convexly curved surfaces 24b toward the rear and inward. Furthermore, as shown in Figures 3 and 4, the left-right outer region R1 of the bottom gripping surface 22, including the protruding portion P0, is located higher than the left-right inner region R2, including the rear end 22a of the bottom gripping surface 22. As a result, for the regions R3 and R4 (the outer region R3 in the left-right direction and the inner region R4 in the left-right direction of the outer gripping surface 24) of the outer gripping surface 24 corresponding to the upper portions of the regions R1 and R2 of the bottom gripping surface 22, the vertical width H1 of the outer region R3 in the left-right direction is set smaller than the width H2 of the inner region R4 in the left-right direction (H1 <H2)。 This makes it easier for the installer to access and grasp, particularly, the outer left-right regions R1 of the bottom gripping surface 22 and the outer left-right regions R3 of the outer gripping surface 24.

[0026] Next, the operation of the flush toilet 1 according to one embodiment of the present invention will be explained with reference to FIGS. First, according to the flush toilet 1 of this embodiment, a front gripping portion 16 and a rear gripping portion 18 are provided at positions spaced apart in the front-to-rear direction of the toilet body 2, and can be grasped by one hand (left hand LH) and the other hand (right hand RH) of the installer, respectively. This allows the installer to grasp and hold the front gripping portion 16 and the rear gripping portion 18 with both hands LH and RH when connecting the outlet portion 12c of the drain trap pipe line 12b of the toilet body 2 to the drain socket 6 connected to the floor-side drain pipe D during construction. Furthermore, in a plan view of the toilet body 2 shown in Figure 1, the rear gripping portion 18 is positioned to one side (the right side when looking at the toilet body 2 from the front) of the left-right central axis A1 (the left-right central position P1 of the toilet body 2).Therefore, the installer can easily adjust his or her own posture and the posture of the toilet body 2 while holding the front gripping portion 16 and the rear gripping portion 18 with both hands LH, RH, and look to the side of the toilet body 2. Therefore, the positioning and connection state of the outlet portion 12c of the drain trap pipe 12b relative to the drain socket 6 during installation can be easily seen from the side of the toilet body 2, improving installation efficiency.

[0027] Next, with the flush toilet 1 according to this embodiment, the finger hook portion 20 of the rear grip portion 18 can be lifted vertically and is formed in a stepped shape. This allows the installer to easily lift the device in the vertical direction while gripping the rear gripping portion 18 with his / her fingers hooked on the finger grip portion 20. Therefore, the installer can easily adjust his / her own posture and the posture of the toilet body 2 while holding the front gripping portion 16 and the rear gripping portion 18 with both hands LH, RH, thereby further improving the ease of installation.

[0028] Furthermore, with the flush toilet 1 of this embodiment, the side wall surface 18a of the rear gripping portion 18, which is provided on the outside of the rear rim portion 10 on one of the left and right sides of the toilet body 2 (the right side when looking at the toilet body 2 from the front), is inclined from the left and right and front and back directions of the toilet body 2 towards the center O of the bowl portion 8 of the toilet body 2 so as to follow the inner surface 10a of the rim portion 10 of the toilet body 2 in a plan view (bottom view in Figure 4). This makes it easier for the installer to pull the toilet body 2 toward the installer by grasping the rear gripping portion 18 with the right hand RH and pulling it toward the center O of the bowl portion 8 of the toilet body 2. Therefore, when lifting the toilet body 2 by grasping the rear gripping portion 18 with the right hand RH during installation, it becomes easier to lift and the position and posture of the toilet body 2 can be easily adjusted, further improving installation efficiency.

[0029] Furthermore, with the flush toilet 1 according to this embodiment, the front grip portion 16 is provided on the periphery (inner or outer periphery) of the rim portion 10, or is provided at the inlet portion 12a of the drain trap pipe line 12b. This allows the rim portion 10 and part of the drain trap pipe line 12b, which are essential components of the toilet body 2, to be used as the front grip portion 16. Therefore, there is no need to provide a separate front grip portion 16 other than the essential components of the toilet body (rim portion 10 and drain trap pipe line 12b).

[0030] Furthermore, with the flush toilet 1 of this embodiment, the center of gravity G of the toilet body 2 is located in a position that is biased to one side (to the right when viewing the toilet body 2 from the front) relative to the left-right central axis A1 of the toilet body 2 (the left-right central position P1 of the toilet body 2) in the plan view shown in Figure 1. As a result, the rear gripping portion 18 is on the same side as the center of gravity G with respect to the left-right central axis A1 of the toilet body 2 (the left-right central position P1 of the toilet body 2), so the relative position of the center of gravity G of the toilet body 2 and the rear gripping portion 18 is closer than when the rear gripping portion 18 is not on the same side as the center of gravity G with respect to the left-right central position P1 of the toilet body 2. Therefore, when lifting the toilet body 2 by grasping the rear gripping portion 18 with the right hand RH during installation, it becomes easier to lift and the position and posture of the toilet body 2 can be easily adjusted, further improving installation efficiency.

[0031] Furthermore, with the flush toilet 1 according to this embodiment, the finger grip portion 20 of the rear grip portion 18 is made of ceramic, and is equipped with a bottom grip surface 22 and an outer grip surface 24 whose surfaces are coated with glaze. Furthermore, the surface roughness of the bottom gripping surface 22 and the outer gripping surface 24 is set to be greater than the surface roughness of the glaze applied to surfaces of the toilet body 2 other than the rear gripping portion 18 (such as the surfaces of the bowl portion 8 and rim portion 10), so that when an installer places their fingers on the finger grip portion 20 and lifts the rear gripping portion 18 while grasping it, the fingers hooked on the finger grip portion 20 are less likely to slip on the gripping surfaces 22, 24. Therefore, the toilet body 2 can be reliably lifted during installation, further improving installation efficiency.

[0032] Furthermore, with the flush toilet 1 according to this embodiment, the maximum width W in the short direction of the bottom grip surface 22 of the finger hook portion 20 is set to 20 mm. This allows the maximum width of the bottom gripping surface 22 in the short direction to be set compactly to about the length of the first joint of the operator's finger. Therefore, the surface area of the bottom gripping surface 22 of the finger hook 20 can be minimized, so that the space around the rear gripping portion 18 can be secured. Furthermore, by setting the maximum width W in the short direction of the bottom gripping surface 22 of the finger hook portion 20 to 20 mm, when the installer holds the rear gripping portion 18 while hooking his / her fingers on the finger hook portion 20 and lifts it, he / she can securely grasp the rear gripping portion 18 with his / her fingers securely in contact with the gripping surfaces 22, 24 of the finger hook portion 20. Therefore, the toilet body 2 can be reliably lifted during installation, further improving ease of installation. [Explanation of symbols]

[0033] 1. A flush toilet according to one embodiment of the present invention 2 Toilet body 4 Tank equipment 6 drain socket 6a base 6b Internal flow path 6c Main body 6d Entrance 6e Horizontal pipe 6f Elastic seal connecting member 8 Toilet bowl 10 Rim of toilet bowl body 10a Inner surface of rim portion (circumferential surface of rim portion) 10b Rim top 10c Rear edge of rim top 10d Back side and top of the rim 12 Drain trap part of toilet body 12a Inlet of drain trap pipe 12b Drain trap pipe 12c Outlet of drain trap pipe 14 Skirt part of toilet bowl body 14a Rear end face of skirt 14b Upper end of rear end surface of skirt 16 Front grip of toilet body 18 Rear grip of toilet body 18a Side wall of rear grip 20 Finger grip 22 Bottom gripping surface 22a Rear end of bottom gripping surface 24 outer gripping surface 24a Anteroposterior side 24b Curved surface 26 Outermost surface A1 The central axis that divides the toilet bowl body into two equal parts in the left and right direction C1 The front-to-rear central axis of the opening cross section of the outlet of the drain trap pipe and the inlet of the drain socket D Floor side drain pipe d1 Inner diameter of elastic connecting member d2 Outer diameter of the outlet of the drain trap pipe F Floor H1 Vertical width of the outer gripping surface H2 Vertical width of the inner area of the outer gripping surface LH Installer's left hand L0 Circumferential and longitudinal directions of the side wall surface and bottom gripping surface of the rear gripping part G center of gravity O The center of the bowl of the toilet P0 protruding part P1: Center position of the toilet bowl in the left-right direction RH Applicator's right hand R1: Outer area of bottom gripping surface in the left and right direction R2: The inner area of the bottom gripping surface in the left-right direction R3: Lateral outer area of the outer gripping surface R4: Lateral medial region of the outer gripping surface S0 Short direction of the side wall surface and bottom gripping surface of the rear gripping part T0 Tangent to the side wall of the rear gripping part in bottom view T1: A tangent line extending in the left-right direction at the rear end of the top surface of the rim of the toilet body in a plan view T2: A tangent line extending in the front-to-rear direction at the top of the rear end surface of the skirt part of the toilet body in a plan view t1 wall thickness W: Width in the short direction perpendicular to the tangent line of the side wall surface of the rear gripping part when viewed from the bottom, maximum width in the short direction of the bottom gripping surface

Claims

1. A flush toilet that is connected to a wall-side or floor-side drain pipe, a ceramic toilet body having a bowl portion for receiving waste, a rim portion provided on the upper edge of the bowl portion, and a drain trap pipe for discharging waste within the bowl portion; a drain socket for connecting the outlet of the drain trap pipe to the drain pipe on the wall side or floor side; The toilet body is provided at positions spaced apart from each other in the front and rear, with a front gripping portion and a rear gripping portion that can be grasped by one hand and the other hand of the installer, respectively; A flush toilet characterized in that the rear grip portion is provided in a position offset to one side of the left or right center position of the toilet body in a plan view of the toilet body.

2. 2. The flush toilet according to claim 1, wherein the rear grip portion is provided with a finger grip portion that can be lifted vertically and is formed in a stepped shape.

3. The flush toilet of claim 1, wherein the rear gripping portion has a side wall surface provided on the outside of the rim portion on one of the left and right sides of the toilet body and on the rear side, and this side wall surface is inclined from the left and right direction or the front and rear direction of the toilet body toward the center of the toilet body so as to follow the peripheral surface of the rim portion of the toilet body in a plan view.

4. 2. The flush toilet according to claim 1, wherein the front grip portion is provided at the inlet of the drain trap pipe or on the periphery of the rim portion.

5. 2. The flush toilet of claim 1, wherein the center of gravity of the toilet body is located to one side of the left-right center of the toilet body in a plan view, and the rear grip portion is on the same side as the center of gravity of the toilet body in the left-right center.

6. The flush toilet according to claim 2, wherein the finger grip portion is made of ceramic and has a gripping surface coated with glaze, and the surface roughness of this gripping surface is set to be greater than the surface roughness of the glazed surface coated on the surface of the toilet body other than the rear grip portion.

7. 7. The flush toilet according to claim 6, wherein the gripping surface has a maximum width in the short direction set to 20 mm.

Images