JP6788217B2 - toilet seat - Google Patents

Description

Aspects of the present invention generally relate to toilet seats.

In the toilet seat provided in the toilet device, by eliminating the gap between the upper plate portion and the bottom plate portion of the toilet seat, it is difficult for dirt to collect in the gap, and even if the dirt adheres to the toilet seat, it can be easily wiped off. , Toilet seats with excellent cleanability are known.

For example, Patent Document 1 discloses a toilet seat in which a gap between the upper plate portion and the bottom plate portion is eliminated by cutting the welded portion after welding the upper plate portion and the bottom plate portion.

When the upper plate portion and the bottom plate portion are joined by welding, if the bonding area between the upper plate portion and the bottom plate portion is increased, the welding work becomes large and the welding work efficiency is lowered. On the other hand, if it is attempted to reduce the joint area between the upper plate portion and the bottom plate portion, at least one of the upper plate portion and the bottom plate portion must be thinned, which may lead to a decrease in the strength of the toilet seat.

For this reason, in the toilet seat, even when the gap between the joint portion between the upper plate portion and the bottom plate portion is eliminated by welding, good strength is obtained while improving the work efficiency of welding so that good productivity can be obtained. It is hoped that it will be possible.

Japanese Unexamined Patent Publication No. 2010-99274

The present invention has been made based on the recognition of such a problem, and an object of the present invention is to provide a toilet seat having good productivity and good strength.

The first invention is a top plate portion having a seating portion that supports the buttocks of the user and a side wall portion that extends downward from each of the inner peripheral side and the outer peripheral side of the seating portion, and welding joining with the side wall portion. The bottom plate welded portion is provided, and the bottom plate portion is provided so as to face the seating portion, and the upper plate portion is provided on the outermost side at the lower end of the side wall portion and welded to the bottom plate welded portion. an upper plate welded portion joined, the provided at the lower end of the side wall portion on the inner side of the upper weld portion, possess a non-weld portion which is not the bottom plate portion and the fusion bonded, and the non-weld portion, The toilet seat is characterized in that it has a gap between it and the bottom plate portion and can come into contact with the bottom plate portion when the user is seated on the seating portion .

According to this toilet seat, by appropriately setting the joint area between the bottom plate welded portion and the top plate welded portion, the work efficiency of welding can be improved and good productivity can be obtained. Then, good strength can be obtained by providing the upper plate welded portion and the non-welded portion at the lower end of the side wall portion and appropriately setting the thickness of the side wall portion. Therefore, it is possible to provide a toilet seat with good productivity and good strength. In addition, the gap allows the non-welded portion to be reliably formed. Further, when the user is seated on the seated portion, the non-welded portion can be brought into contact with the bottom plate portion, so that the strength can be further improved.

A second invention is a toilet seat according to the first invention, wherein the upper plate portion and the bottom plate portion have welding burrs in the gap.

According to this toilet seat, the welding burr is brought into contact with the bottom plate portion and the upper plate portion to contribute to ensuring the strength, and the strength of the toilet seat can be further improved.

A third invention is a top plate portion having a seating portion for supporting the user's buttocks and a side wall portion extending downward from each of the inner peripheral side and the outer peripheral side of the seating portion, and welding joining with the side wall portion. has been bottom plate has a welded portion, said a seating portion and oppositely disposed bottom plate portion, and a hinge portion provided at the rear end of the upper plate portion and the bottom plate portion, the upper plate portion , An upper plate welded portion provided on the outermost side at the lower end of the side wall portion and welded to the bottom plate welded portion, and provided inside the upper plate welded portion at the lower end of the side wall portion and welded to the bottom plate portion. The toilet seat has a non-welded portion that is not joined, and the upper plate welded portion is provided at least on the inner peripheral side and the outer peripheral side in front of the hinge portion.

According to this toilet seat, by appropriately setting the joint area between the bottom plate welded portion and the top plate welded portion, the work efficiency of welding can be improved and good productivity can be obtained. Then, good strength can be obtained by providing the upper plate welded portion and the non-welded portion at the lower end of the side wall portion and appropriately setting the thickness of the side wall portion. Therefore, it is possible to provide a toilet seat with good productivity and good strength. Further, the productivity can be further improved as compared with the case where the upper plate welding portion is provided on the entire circumference.

A fourth invention is a top plate portion having a seating portion that supports the buttocks of the user and a side wall portion that extends downward from each of the inner peripheral side and the outer peripheral side of the seating portion, and a welding joint with the side wall portion. The bottom plate welded portion is provided, and the bottom plate portion is provided so as to face the seating portion, and the upper plate portion is provided on the outermost side at the lower end of the side wall portion and welded to the bottom plate welded portion. It has a bonded upper plate welded portion and a non-welded portion provided inside the upper plate welded portion at the lower end of the side wall portion and not welded to the bottom plate portion, and the bottom plate portion is said to have the same. The toilet seat is provided so as to face the non-welded portion and has a bottom plate rib extending toward the non-welded portion.

According to this toilet seat, by appropriately setting the joint area between the bottom plate welded portion and the top plate welded portion, the work efficiency of welding can be improved and good productivity can be obtained. Then, good strength can be obtained by providing the upper plate welded portion and the non-welded portion at the lower end of the side wall portion and appropriately setting the thickness of the side wall portion. Therefore, it is possible to provide a toilet seat with good productivity and good strength. Further, when the user is seated on the seated portion, the non-welded portion and the bottom plate portion can be easily brought into contact with each other via the bottom plate rib. The strength of the toilet seat can be further improved.

A fifth invention is a top plate portion having a seating portion for supporting the user's buttocks and a side wall portion extending downward from each of the inner peripheral side and the outer peripheral side of the seating portion, and welding joining with the side wall portion. The bottom plate welded portion is provided, and the bottom plate portion is provided so as to face the seating portion, and the upper plate portion is provided on the outermost side at the lower end of the side wall portion and welded to the bottom plate welded portion. The non-welded portion has a bonded upper plate welded portion and a non-welded portion provided inside the upper plate welded portion at the lower end of the side wall portion and not weld-bonded to the bottom plate portion . The toilet seat is characterized by having an upper plate rib extending toward the bottom plate portion.

According to this toilet seat, by appropriately setting the joint area between the bottom plate welded portion and the top plate welded portion, the work efficiency of welding can be improved and good productivity can be obtained. Then, good strength can be obtained by providing the upper plate welded portion and the non-welded portion at the lower end of the side wall portion and appropriately setting the thickness of the side wall portion. Therefore, it is possible to provide a toilet seat with good productivity and good strength. Further, when the user is seated on the seated portion, the non-welded portion and the bottom plate portion can be easily brought into contact with each other via the upper plate rib. The strength of the toilet seat can be further improved.

A sixth aspect of the present invention is that, in any one of the first to fifth aspects, the outer surface of the side wall portion has an inclined surface that is inclined so that the distance from the seating portion increases toward the bottom. It is a characteristic toilet seat.

According to this toilet seat, for example, when the welding burr protruding to the outside is removed by the cutting process, the work efficiency of the cutting process can be improved and the productivity of the toilet seat can be further improved.

According to aspects of the invention, a toilet seat with good productivity and good strength is provided.

It is a perspective view which shows the toilet device provided with the toilet seat which concerns on 1st Embodiment. It is an exploded perspective view which shows the toilet seat which concerns on 1st Embodiment. It is a partial cross-sectional view which represents a part of the toilet seat which concerns on 1st Embodiment. 4 (a) and 4 (b) are partial cross-sectional views showing a part of the toilet seat according to the first embodiment in an enlarged manner. It is a partial cross-sectional view which represents a part of the toilet seat which concerns on 1st Embodiment. It is a partial plan view which represents a part of the toilet seat which concerns on 1st Embodiment. 7 (a) and 7 (b) are partial cross-sectional views showing a part of the toilet seat according to the first embodiment. 8 (a) to 8 (d) are partial plan views showing a part of the toilet seat according to the first embodiment. 9 (a) to 9 (c) are partial cross-sectional views showing the procedure of welding joining and cutting of the toilet seat according to the first embodiment. It is explanatory drawing which shows an example of a cutting process. 11 (a) to 11 (f) are reference views schematically showing the relationship between the inclination angle of the inclined surface and the cutting process. It is a partial plan view which shows the modification of the toilet seat which concerns on 1st Embodiment. 13 (a) and 13 (b) are partial cross-sectional views showing a part of the toilet seat according to the second embodiment. It is a top view which shows a part of the toilet seat which concerns on 2nd Embodiment. 15 (a) and 15 (b) are partial cross-sectional views showing a part of the toilet seat according to the third embodiment. It is a bottom view which shows a part of the toilet seat which concerns on 3rd Embodiment.

Hereinafter, embodiments will be described with reference to the drawings. In each drawing, similar components are designated by the same reference numerals and detailed description thereof will be omitted as appropriate.
(First Embodiment)
FIG. 1 is a perspective view showing a toilet device provided with a toilet seat according to the first embodiment.
As shown in FIG. 1, the toilet device 2 includes a toilet seat device 4 and a Western-style seated toilet (hereinafter, simply referred to as a “toilet bowl” for convenience of explanation) 6. The toilet seat device 4 is mounted on the toilet bowl 6. The toilet seat device 4 may be integrally attached to the toilet bowl 6 or may be detachably attached to the toilet bowl 6.

The toilet seat device 4 has a toilet seat 10, a toilet lid 12, and a main body portion 14. The toilet lid 12 is provided on the toilet seat device 4 as needed and can be omitted. The toilet seat 10 and the toilet lid 12 are pivotally supported with respect to the main body 14 so as to be openable and closable.

Here, in the present specification, the upper side is referred to as "upper" when viewed from the user sitting on the toilet seat 10, and the lower side is referred to as "lower" when viewed from the user sitting on the toilet seat 10. Also, when viewed from the user sitting on the toilet seat 10 with his back to the open toilet lid 12, the front is "front", the back is "rear", the right side is "right side", and the left side is "left side". ".

The toilet bowl 6 has a bowl portion 6a. The bowl portion 6a has a concave shape that is recessed downward. The toilet bowl 6 receives excrement such as urine and stool of the user in the bowl portion 6a.

The main body 14 of the toilet seat device 4 is mounted on a portion rearward of the bowl portion 6a of the toilet bowl 6. The main body portion 14 pivotally supports the toilet seat 10 and the toilet lid 12 so as to be openable and closable, and arranges the toilet seat 10 and the toilet lid 12 above the bowl portion 6a in a closed state. The toilet lid 12 covers the bowl portion 6a of the toilet seat 10 and the toilet bowl 6 in the closed state.

The toilet seat 10 has an opening 10a that exposes the bowl portion 6a. The toilet seat 10 is provided on the toilet bowl 6 so as to surround the outer edge of the bowl portion 6a, and exposes the bowl portion 6a through the opening 10a. As a result, the user can excrete in the bowl portion 6a while sitting on the toilet seat 10. In this example, a so-called O-shaped toilet seat 10 in which a through-hole-shaped opening 10a is formed is shown. The toilet seat 10 is not limited to the O-shape, but may be a U-shape or the like. The opening 10a is not limited to a through hole shape, but may be a notch shape. The shape of the toilet seat 10 in the used state (the state in which the user can sit) when viewed from above is an annular shape or a U-shape.

The toilet seat device 4 has, for example, a heating toilet seat function for warming the seating surface (the surface in contact with the user's buttocks) SF of the toilet seat 10. Even if the toilet seat device 4 has a sanitary cleaning function of ejecting water (hot water or cold water) toward the "buttocks" of the user sitting on the toilet seat 10 and cleaning the "buttocks" of the user. Good. In other words, the toilet seat device 4 may be a sanitary cleaning device.

The toilet seat device 4 has various types such as a "warm air drying function", a "deodorizing function", and an "indoor heating function" in which warm air is blown toward the "buttocks" of the user sitting on the toilet seat 10 to dry them. It may further have a mechanism.

FIG. 2 is an exploded perspective view showing the toilet seat according to the first embodiment.
FIG. 3 is a partial cross-sectional view showing a part of the toilet seat according to the first embodiment.
FIG. 3 shows a cross section taken along line A1-A2 of FIG.
As shown in FIGS. 2 and 3, the toilet seat 10 has an upper plate portion 30, a bottom plate portion 40, a support 50, and a pair of hinge portions 61 and 62.

The top plate portion 30, the bottom plate portion 40, and the support 50 each have openings 30a, 40a, and 50a. The shape of the top plate portion 30 and the bottom plate portion 40 viewed from above is substantially the same as the shape of the toilet seat 10 viewed from above. That is, the shape of the top plate portion 30 and the bottom plate portion 40 as viewed from above is an annular shape or a U-shape. The opening 10a of the toilet seat 10 is formed by the opening 30a of the upper plate portion 30 and the opening 40a of the bottom plate portion 40.

The upper plate portion 30 has a seating portion 31, an inner side wall portion 32, an outer side wall portion 33, and a rear end side wall portion 34. The seating portion 31 supports the user's buttocks in a state of being attached to the toilet bowl 6. The seating portion 31 has a seating surface SF and a back surface BF on the opposite side of the seating surface SF. The seating portion 31 is substantially annular. In this example, the seating portion 31 is annular. The seating portion 31 may have a U-shape in which a part on the front end side is separated and the inner peripheral side and the outer peripheral side are communicated with each other. That is, in the seating portion 31, the substantially annular state is an annular or U-shaped state.

The inner side wall portion 32 extends downward from the inner peripheral side of the seating portion 31. The outer side wall portion 33 extends downward from the outer peripheral side of the seating portion 31. The rear end side wall portion 34 extends downward from the rear end portion of the seating portion 31. When the seating portion 31 is U-shaped, the upper plate portion 30 is continuous with the inner peripheral side and the outer peripheral side of the seating portion 31, and extends downward from each of the inner peripheral side and the outer peripheral side of the seating portion 31. It suffices to have one side wall.

The bottom plate portion 40 is arranged so as to face the seating portion 31. The bottom plate portion 40 has a facing surface FF facing the back surface BF, and the back surface BF covers the back surface BF. In other words, the bottom plate portion 40 closes the lower end of the top plate portion 30. As a result, the bottom plate portion 40 forms a space (hereinafter, referred to as an internal space SP) surrounded by the back surface BF, the facing surface FF, and the side wall portions 32 and 33.

The support 50 is provided in the internal space SP. The support 50 is attached to the bottom plate portion 40 by, for example, screwing. The support 50 has a horizontal plate portion 51 extending in a direction parallel to the back surface BF of the seating portion 31, and a plurality of vertical plate portions 52 extending in the vertical direction. A slight gap is provided between each vertical plate portion 52 and the back surface BF. The support body 50 supports the seating portion 31 by bringing the upper end of each vertical plate portion 52 into contact with the back surface BF when the seating portion 31 is bent due to the seating of the user. As a result, damage to the seating portion 31 can be suppressed.

In this example, the shape of the support 50 viewed from above is annular like the upper plate portion 30 and the bottom plate portion 40. Not limited to this, the support 50 may be formed in a U shape with respect to the annular plate portion 30 and the bottom plate portion 40, for example. Further, in this example, one continuous support 50 is provided along the upper plate portion 30 and the bottom plate portion 40. Not limited to this, the support 50 may be divided into a plurality of parts. In other words, the toilet seat 10 may have a plurality of supports 50.

The hinge portions 61 and 62 are provided at the rear ends of the upper plate portion 30 and the bottom plate portion 40. The hinge portion 61 is provided at the rear end right end of the upper plate portion 30 and the bottom plate portion 40. The hinge portion 62 is provided at the rear end left end of the upper plate portion 30 and the bottom plate portion 40. The toilet seat 10 is pivotally supported on the main body 14 via the hinges 61 and 62 by sandwiching a part of the main body 14 between the hinges 61 and 62.

A part of the hinge portions 61 and 62 is provided at the rear end of the upper plate portion 30. Another part of the hinge portions 61 and 62 is provided at the rear end of the bottom plate portion 40. The hinge portions 61 and 62 are formed by joining the top plate portion 30 and the bottom plate portion 40. Further, the hinge portions 61 and 62 have a surface continuous with the seating surface SF. Thereby, the aesthetic appearance of the toilet seat 10 can be improved. The hinge portions 61 and 62 may be provided on one of the upper plate portion 30 and the bottom plate portion 40, for example.

The bottom plate portion 40 has an inner bottom plate welded portion 42 welded to the inner side wall portion 32 and an outer bottom plate welded portion 43 welded to the outer side wall portion 33. In this way, the top plate portion 30 and the bottom plate portion 40 are joined by welding. More specifically, they are joined by vibration welding.

As described above, the upper plate portion 30 has a seating portion 31, an inner side wall portion 32, and an outer side wall portion 33. The upper plate portion 30 has an opening box shape that opens downward. In other words, the cross-sectional shape of the upper plate portion 30 is substantially arcuate. The upper plate portion 30 has a plate shape curved in an arc shape.

On the other hand, the bottom plate portion 40 has a substantially flat plate shape. The bottom plate portion 40 has an annular flat plate shape. The inner bottom plate welding portion 42 is set at the inner end of the flat plate-shaped bottom plate portion 40. The outer bottom plate welding portion 43 is set at the outer end of the flat plate-shaped bottom plate portion 40.

For example, the bottom plate portion 40 may be formed in the shape of an opening box having an opening upward, and the open ends of the top plate portion 30 and the bottom plate portion 40 may be welded and joined to each other. However, by forming the bottom plate portion 40 into a flat plate shape, the joint portion between the top plate portion 30 and the bottom plate portion 40 can be set downward. In this way, the joint portion between the upper plate portion 30 and the bottom plate portion 40 is set as downward as possible. Thereby, for example, the joint portion can be made inconspicuous. The aesthetic appearance of the toilet seat 10 can be improved.

The upper plate portion 30 has an inner upper plate welded portion 32a, an inner non-welded portion 32b, an outer upper plate welded portion 33a, and an outer non-welded portion 33b. The inner upper plate welding portion 32a is provided on the outermost side (outer surface side) at the lower end of the inner side wall portion 32, and is welded and joined to the inner bottom plate welding portion 42. The inner upper plate welding portion 32a is provided continuously with the outer surface of the inner side wall portion 32. The inner non-welded portion 32b is provided inside the inner upper plate welded portion 32a (on the internal space SP side) at the lower end of the inner side wall portion 32. The inner non-welded portion 32b is arranged in the internal space SP. The inner non-welded portion 32b is not weld-bonded to the bottom plate portion 40. Since the outer upper plate welded portion 33a and the outer non-welded portion 33b are the same as the inner upper plate welded portion 32a and the inner non-welded portion 32b, detailed description thereof will be omitted.

The toilet seat 10 has a cutting surface MF at a joint portion between the inner upper plate welding portion 32a and the inner bottom plate welding portion 42, and a joint portion between the outer upper plate welding portion 33a and the outer bottom plate welding portion 43. When the top plate portion 30 and the bottom plate portion 40 are welded and joined, welding burr WB is generated on the inside and outside of the joint portion. Therefore, in the toilet seat 10, after the top plate portion 30 and the bottom plate portion 40 are welded and joined, the welded burr WB protruding to the outside of the joined portion is removed by cutting. By this cutting process, a cutting surface MF is formed. The cutting surface MF is, for example, a substantially vertical surface when the toilet seat 10 is closed.

In FIG. 3, for convenience, the boundary between the upper plate portion 30 and the bottom plate portion 40 is shown so as to appear on the cutting surface MF, but when the upper plate portion 30 and the bottom plate portion 40 are welded and joined, they are actually formed. Does not show the boundary between the upper plate portion 30 and the bottom plate portion 40 on the cutting surface MF. In the toilet seat 10, the outer surface of the upper plate portion 30 and the outer surface of the bottom plate portion 40 can be made substantially continuous surfaces via the cutting surface MF.

As described above, in the toilet seat 10, it is possible to prevent the formation of a joint (gap) between the upper plate portion 30 and the bottom plate portion 40. Thereby, the aesthetic appearance of the toilet seat 10 can be improved. In addition, it is possible to prevent dirt and the like from accumulating at the joints. Further, it is possible to easily wipe off the dirt adhering to the toilet seat 10 and improve the cleanability.

The inner side wall portion 32 has an inclined surface 32c. The inclined surface 32c is provided on the outer surface of the inner side wall portion 32. The inclined surface 32c is inclined so that the distance from the seating portion 31 increases toward the bottom. In other words, the inclined surface 32c is inclined so as to spread outward as it goes downward. The inclined surface 32c is located at the lower end of the inner side wall portion 32. The inclined surface 32c is continuous with, for example, the cutting surface MF. Similarly, the outer side wall 33 has an inclined surface 33c.

The inclination angle θ1 of the inclined surface 32c with respect to the vertical surface and the inclination angle θ2 of the inclined surface 33c with respect to the vertical surface are, for example, 1 ° or more and 11 ° or less. More preferably, it is 5 ° or more and 7 ° or less. The inclination angle θ2 of the inclined surface 33c is substantially the same as, for example, the inclination angle θ1 of the inclined surface 32c. The tilt angle θ2 may be different from the tilt angle θ1. Further, the inclination angles θ1 and θ2 may differ depending on, for example, the position of the toilet seat 10 in the circumferential direction.

For the top plate portion 30 and the bottom plate portion 40, for example, a thermoplastic resin such as polypropylene (PP), ABS (copolymerized synthetic resin of acrylonitrile, butadiene and styrene), or polycarbonate (PC) is used. This enables vibration welding of the top plate portion 30 and the bottom plate portion 40. For example, PP is used for the top plate portion 30 and the bottom plate portion 40. As a result, the manufacturing cost of the toilet seat 10 can be suppressed. The material of the bottom plate portion 40 is, for example, the same as the material of the top plate portion 30. As a result, the upper plate portion 30 and the bottom plate portion 40 can be easily joined by vibration welding. The material of the bottom plate portion 40 may be different from the material of the top plate portion 30. The joining between the top plate portion 30 and the bottom plate portion 40 is not limited to vibration welding, and other welding methods may be used.

The thickness t1 of the seating portion 31 is, for example, 1 mm or more and 3 mm or less. More preferably, it is 1.5 mm. As a result, appropriate strength can be obtained in the seating portion 31. Further, when the heating toilet seat function is performed, the heat capacity of the seating portion 31 can be reduced, and the power consumption associated with the heating of the seating portion 31 can be suppressed.

The thickness t2 of the inner side wall portion 32 is, for example, 4 mm or more and 8 mm or less. The thickness t3 of the outer side wall portion 33 is, for example, 4 mm or more and 8 mm or less. As a result, appropriate strength can be obtained in the upper plate portion 30. The thickness t4 of the inner upper plate welded portion 32a is, for example, 1 mm or more and 4 mm or less. The thickness t5 of the outer upper plate welded portion 33a is, for example, 1 mm or more and 4 mm or less. As a result, the top plate portion 30 and the bottom plate portion 40 can be easily welded, and the work efficiency of welding can be improved.

4 (a) and 4 (b) are partial cross-sectional views showing a part of the toilet seat according to the first embodiment in an enlarged manner.
4 (a) and 4 (b) show an enlarged joint portion between the inner side wall portion 32 and the inner bottom plate welded portion 42. Further, FIG. 4A shows a time when the user is not seated on the seating portion 31, and FIG. 4B shows a time when the user is seated on the seating portion 31.

As shown in FIG. 4A, the inner non-welded portion 32b has a gap GP with the bottom plate portion 40 when the user is not seated on the seating portion 31. The upper plate portion 30 and the bottom plate portion 40 have a weld burr WB in the gap GP. On the other hand, as shown in FIG. 4B, the inner non-welded portion 32b can come into contact with the bottom plate portion 40 when the user is seated on the seating portion 31.

The distance d1 between the inner non-welded portion 32b and the bottom plate portion 40 when the user is not seated on the seated portion 31 is, for example, 1 mm or more and 5 mm or less. As a result, when the user is seated on the seating portion 31 and the inner side wall portion 32 is elastically deformed, the inner non-welded portion 32b can be brought into contact with the bottom plate portion 40. The inner non-welded portion 32b may directly contact the bottom plate portion 40, or may indirectly contact the bottom plate portion 40 via a welding burr WB or the like.

FIG. 5 is a partial cross-sectional view showing a part of the toilet seat according to the first embodiment.
FIG. 5 shows the cross section of the line B1-B2 of FIG.
As shown in FIG. 5, the rear end side wall portion 34 has a welded portion 34a. The welded portion 34a is provided at the lower end of the rear end side wall portion 34. The welded portion 34a has a groove shape that is recessed from the lower end of the rear end side wall portion 34 and extends along the rear end side wall portion 34. The welded portion 34a is provided inside the outer surface of the rear end side wall portion 34.

The bottom plate portion 40 has a welded portion 44. The welded portion 44 is provided near the rear end of the bottom plate portion 40 at a position facing the welded portion 34a of the upper plate portion 30. The welded portion 44 has a rib-like shape that protrudes upward and extends along the rear end of the bottom plate portion 40. The width of the welded portion 44 is narrower than the width of the welded portion 34a in the direction orthogonal to the extending direction.

In this way, at the rear ends of the upper plate portion 30 and the bottom plate portion 40, the welded portions 34a and 44 are welded and joined inside the outer surface of the rear end side wall portion 34. In the welded portions 34a and 44, welded burrs WB are generated before and after the welded portion 44, and each welded burr WB is housed in the groove-shaped welded portion 34a. As a result, even when the welded portions 34a and 44 are set inside the outer surface, it is possible to prevent the welded burr WB from being exposed to the outside.

FIG. 6 is a partial plan view showing a part of the toilet seat according to the first embodiment.
In FIG. 6, the illustration of the upper plate portion 30 and the support 50 is omitted for convenience, and only the bottom plate portion 40 is shown. More specifically, the rear end portion of the bottom plate portion 40 is shown in an enlarged view as viewed from above. The left side portion of FIG. 6 is a portion corresponding to the hinge portion 61, and the right portion of FIG. 6 is a portion corresponding to the hinge portion 62.

As shown in FIG. 6, a part of the welded portions 34a and 44 extends to the hinge portions 61 and 62. The hinge portions 61 and 62 are also welded by the welded portions 34a and 44 in the same manner as the rear end side wall portion 34. As described above, the inner upper plate welding portion 32a and the outer upper plate welding portion 33a are provided at least on the inner peripheral side and the outer peripheral side in front of the hinge portions 61 and 62.

Welding burr WB is concealed inside in the rear end side wall portion 34 and the hinge portions 61 and 62. Therefore, in the rear end side wall portion 34 and the hinge portions 61 and 62, the welding burr WB does not need to be cut. At the rear end portions of the upper plate portion 30 and the bottom plate portion 40 provided with the hinge portions 61 and 62, a corner is formed, which makes it difficult to perform cutting. Therefore, in the rear end side wall portions 34 and the hinge portions 61 and 62, the weld burr WB is concealed inside by the welded portions 34a and 44. As a result, in the toilet seat 10, the work efficiency of cutting can be improved. The productivity of the toilet seat 10 can be improved.

On the other hand, in the rear end side wall portions 34 and the hinge portions 61 and 62, since the welded portions 34a and 44 are set inside the outer surface, a joint is formed between the upper plate portion 30 and the bottom plate portion 40. It ends up. However, the joints formed in the rear end side wall portion 34 and the hinge portions 61 and 62 face rearward and are covered by the main body portion 14 and the toilet bowl 6. Therefore, even when a joint is generated, the joint can be made inconspicuous and the deterioration of the aesthetic appearance of the toilet seat 10 can be suppressed. That is, in the toilet seat 10, productivity can be improved while suppressing deterioration of aesthetics.

Further, the outer surface of the rear end side wall portion 34 is inclined so as to be forward as it goes downward. The outer surface of the rear end side wall portion 34 is an inverted tapered surface. When the toilet seat 10 is closed, the joint formed on the rear end side wall portion 34 is located in front of the rearmost end of the rear end side wall portion 34. As a result, the joint can be made less noticeable when the toilet seat 10 is closed. The aesthetic appearance of the toilet seat 10 can be further improved.

As described above, in the toilet seat 10, the rear end side wall portion 34 and the hinge portions 61 and 62 use a welding method in which a joint is formed, and the inner side wall portion 32 and the outer side wall portion 33 are provided with a welding method in which a joint is substantially not generated. Use. As a result, good aesthetics, cleanability, and productivity can be obtained in the toilet seat 10.

As shown in FIG. 6, the welded portion 44 is separated from the outer bottom plate welded portion 43 (the hatched portion in FIG. 6) at the portions corresponding to the hinge portions 61 and 62, respectively. That is, the welded portion 44 is provided apart from the portion to be welded in a seamless state. In this way, a gap is set between the welded portion 44 and the outer bottom plate welded portion 43 in consideration of, for example, the amplitude of vibration welding and the welding deviation. Thereby, for example, it is possible to prevent the rib-shaped welded portion 44 from coming into contact with the inner surface of the inner side wall portion 32 or the outer side wall portion 33 when vibration welding is performed. The top plate portion 30 and the bottom plate portion 40 can be appropriately welded and joined. The gaps d11 and d12 between the welded portion 44 and the outer bottom plate welded portion 43 are, for example, 1 mm or more and 3 mm or less.

7 (a) and 7 (b) are partial cross-sectional views showing a part of the toilet seat according to the first embodiment.
7 (a) and 7 (b) show the state of the upper plate portion 30 and the bottom plate portion 40 before welding and joining.
As shown in FIG. 7A, the inner side wall portion 32 of the upper plate portion 30 has a protruding portion 32d in a state before welding and joining. The protruding portion 32d has a rib-like shape that protrudes from the outer surface of the inner side wall portion 32 toward the inner peripheral side and extends along the inner side wall portion 32. The protruding portion 32d is an annular shape along the entire circumference of the annular inner side wall portion 32.

The bottom plate portion 40 has a protruding portion 42a in a state before welding and joining. The protruding portion 42a has a rib-like shape that protrudes from the inner bottom plate welding portion 42 (inner end of the bottom plate portion 40) toward the inner peripheral side and extends along the inner bottom plate welding portion 42. The protruding portion 42a is an annular shape along the entire circumference of the inner bottom plate welding portion 42.

The protruding portion 32d faces the protruding portion 42a in the vertical direction. The protruding portion 32d is arranged above the lower end of the inner upper plate welded portion 32a and below the lower end of the inner non-welded portion 32b. Therefore, as shown in FIG. 7A, a gap is provided between the protruding portion 32d and the protruding portion 42a in a state where the inner upper plate welding portion 32a is in contact with the inner bottom plate welding portion 42. The inclined surface 32c extends to the protruding portion 32d in the state before welding and joining.

As shown in FIG. 7B, the outer side wall portion 33 of the upper plate portion 30 has a protruding portion 33d in a state before welding and joining. The protruding portion 33d has a rib shape that protrudes from the outer surface of the outer side wall portion 33 toward the outer peripheral side and extends along the outer side wall portion 33. The protruding portion 33d is provided on the entire circumference of the substantially U-shaped outer side wall portion 33.

The bottom plate portion 40 has a protruding portion 43a in a state before welding and joining. The protruding portion 43a has a rib shape that protrudes from the outer bottom plate welding portion 43 (outer end of the bottom plate portion 40) toward the outer peripheral side and extends along the outer bottom plate welding portion 43. The protruding portion 43a is provided on the entire circumference of the outer bottom plate welding portion 43 having a substantially U shape.

The protruding portion 33d faces the protruding portion 43a in the vertical direction. The protruding portion 33d is arranged above the lower end of the outer upper plate welding portion 33a and below the lower end of the outer non-welding portion 33b. Therefore, as shown in FIG. 7B, a gap is provided between the protruding portion 33d and the protruding portion 43a in a state where the outer upper plate welding portion 33a is in contact with the outer bottom plate welding portion 43. The inclined surface 33c extends to the protruding portion 33d in the state before welding and joining.

In the welding joint between the upper plate portion 30 and the bottom plate portion 40, the welding burr WB protruding from the inner upper plate welding portion 32a and the inner bottom plate welding portion 42 to the inner peripheral side is sandwiched between the protruding portion 32d and the protruding portion 42a. Similarly, the welding burr WB projecting from the outer upper plate welding portion 33a and the outer bottom plate welding portion 43 to the outer peripheral side is sandwiched between the projecting portion 33d and the projecting portion 43a. That is, a welding burr WB projecting outward with respect to the internal space SP is interposed between the projecting portion 32d and the projecting portion 42a and between the projecting portion 33d and the projecting portion 43a.

By providing the protrusions 32d, 33d, 42a, and 43a in this way, the position of the weld burr WB can be regulated. For example, it is possible to prevent the welded burr WB from extending upward or downward and leaving the welded burr WB on the outer surface of the toilet seat 10 even after cutting.

The amount of protrusion of the protruding portions 32d, 33d, 42a, and 43a may be appropriately set according to the amount of protrusion of the weld burr WB and the like. The amount of protrusion of the protruding portions 32d, 33d, 42a, 43a may be set so that, for example, the welding burr WB does not protrude from the protruding portions 32d, 33d, 42a, 43a.

8 (a) to 8 (d) are partial plan views showing a part of the toilet seat according to the first embodiment.
As shown in FIGS. 8 (a) and 8 (b), the outer side wall portion 33 has an inclined surface 33e in a portion rearward from the protruding portion 33d. The inclined surface 33e is inclined inward toward the rear, and gently connects the rear end portion of the protruding portion 33d and the outer surface of the outer side wall portion 33.

As shown in FIGS. 8 (c) and 8 (d), the bottom plate portion 40 has an inclined surface 43b in a portion rearward from the protruding portion 43a. The inclined surface 43b is inclined inward toward the rear, and gently connects the rear end portion of the protruding portion 43a and the outer surface of the bottom plate portion 40.

In the cutting process, the protrusions 33d, 43a and the weld burr WB are cut up to the inclined surfaces 33e and 43b. As a result, it is possible to prevent a step from being generated between the cutting surface MF after cutting and the outer surface behind the cutting surface MF.

9 (a) to 9 (c) are partial cross-sectional views showing the procedure of welding joining and cutting of the toilet seat according to the first embodiment.
The procedure for welding and joining on the outer side wall 33 is substantially the same as the procedure for welding on the inner side wall 32. Therefore, in FIGS. 9 (a) to 9 (c), for convenience, the inner side wall portion 32 will be described as an example.

As shown in FIG. 9A, in the welding joint between the upper plate portion 30 and the bottom plate portion 40, first, the inner upper plate welding portion 32a is brought into contact with the inner bottom plate welding portion 42. In this state, the inner upper plate welding portion 32a and the inner bottom plate welding portion 42 are welded and joined. For example, the inner upper plate welding portion 32a and the inner bottom plate welding portion 42 are welded and joined by vibration welding. The direction of vibration when the top plate portion 30 and the bottom plate portion 40 are welded and joined by vibration welding is, for example, the left-right direction.

As shown in FIG. 9B, when the upper plate portion 30 and the bottom plate portion 40 are welded and joined, a part of the inner upper plate welded portion 32a and a part of the inner bottom plate welded portion 42 are combined with the weld burr WB. Appears. The welded burr WB protruding inward is housed in, for example, the gap GP between the inner non-welded portion 32b and the bottom plate portion 40. The weld burr WB projecting outward is accommodated, for example, between the projecting portion 32d and the projecting portion 42a.

As shown in FIG. 9C, after the top plate portion 30 and the bottom plate portion 40 are welded and joined, the protruding portions 32d and 42a and the welded burr WB protruding outward are removed by cutting. As a result, the toilet seat 10 is completed.

In the cutting process, for example, cutting is performed up to the inclined surface 32c extending directly above the protruding portion 32d, and a part of the inclined surface 32c is removed together with the protruding portion 32d and the like. Thereby, for example, even when the position of the machine tool is slightly deviated, the protrusions 32d, 42a and the outer welding burr WB can be appropriately removed. After the cutting process, the cutting surface MF can be made continuous with the inclined surface 32c.

FIG. 10 is an explanatory diagram showing an example of cutting.
As shown in FIG. 10, for cutting, for example, the rotary shaft SH, the blade BL attached to the tip of the rotary shaft SH, and the roller RL rotatably attached to the rotary shaft SH above the blade BL. A machine tool MCT having the above is used. The machine tool MCT performs cutting by rotating the blade BL via the rotating shaft SH. The machine tool MCT is a so-called end mill.

The outer diameter of the roller RL is slightly larger than the outer diameter of the blade BL. As a result, by bringing the roller RL into contact with the object to be machined, it is possible to prevent the object from being cut more than necessary. The clearance (difference in radius) between the roller RL and the blade BL is, for example, about 0.2 mm (0.1 mm or more and 0.5 mm or less).

In the cutting process of the toilet seat 10, for example, the roller RL is brought into contact with the inclined surfaces 32c and 33c, and the blade BL is moved along the inclined surfaces 32c and 33c to move the protrusions 32d, 33d, 42a, 43a, and The outer weld burr WB is cut.

11 (a) to 11 (f) are reference views schematically showing the relationship between the inclination angle of the inclined surface and the cutting process.
As shown in FIGS. 11A and 11B, when the inclination angle θ1 of the inclined surface 32c is appropriately set (for example, 7 °), the occurrence of uncut parts and over-cutting is suppressed. However, the inclined surface 32c after cutting and the cutting surface MF can be appropriately made continuous surfaces.

On the other hand, as shown in FIGS. 11 (c) and 11 (d), when the inclination angle θ1 of the inclined surface 32c is too small (for example, 0 °), it corresponds to the dimensional difference between the roller RL and the blade BL. Uncut parts will occur.

On the contrary, as shown in FIGS. 11 (e) and 11 (f), when the inclination angle θ1 of the inclined surface 32c is too large (for example, 12 °), there is a high possibility that the object is cut too much. turn into. For example, as shown in FIG. 11 (f), a step is generated between the inclined surface 32c after cutting and the cutting surface MF.

Therefore, the inclination angles θ1 and θ2 of the inclined surfaces 32c and 33c are set to 1 ° or more and 11 ° or less as described above. As a result, it is possible to suppress the occurrence of uncut parts and over-cutting, and to appropriately perform cutting. The work efficiency of the cutting process can be improved, and the productivity of the toilet seat 10 can be further improved. For example, the inclination angles θ1 and θ2 of the inclined surfaces 32c and 33c are set to 5 ° or more and 7 ° or less. As a result, the cutting process can be performed more appropriately.

As described above, in the toilet seat 10 according to the present embodiment, the upper plate portion 30 has an inner upper plate welded portion 32a, an inner non-welded portion 32b, an outer upper plate welded portion 33a, and an outer non-welded portion 33b. And have. Therefore, by appropriately setting the joint area between the bottom plate welding portions 42, 43 and the top plate welding portions 32a, 33a, the working efficiency of welding can be improved and good productivity can be obtained. Then, an inner upper plate welding portion 32a, an outer upper plate welding portion 33a, an inner non-welding portion 32b, and an outer non-welding portion 33b are provided at the lower ends of the inner side wall portion 32 and the outer side wall portion 33, and the inner side wall portion 32 and the outer side wall are provided. Good strength can be obtained by appropriately setting the thickness of the portion 33. Therefore, it is possible to provide a toilet seat 10 having good productivity and good strength.

Further, a gap GP is provided between the inner non-welded portion 32b and the bottom plate portion 40, and between the outer non-welded portion 33b and the bottom plate portion 40. As a result, the inner non-welded portion 32b and the outer non-welded portion 33b can be reliably formed.

Further, a welding burr WB is provided in the gap GP. As a result, the welding burr WB is brought into contact with the bottom plate portion 40 and the top plate portion 30 to contribute to ensuring the strength, and the strength of the toilet seat 10 can be further improved.

Further, when the user is seated on the seating portion 31, the inner non-welding portion 32b and the outer non-welding portion 33b can be brought into contact with the bottom plate portion 40, so that the strength can be further improved.

Further, the inner upper plate welding portion 32a and the outer upper plate welding portion 33a are provided at least on the inner peripheral side and the outer peripheral side in front of the hinge portions 61 and 62. As a result, the productivity can be further improved as compared with the case where the outer upper plate welding portion 33a is provided on the entire circumference.

Inclined surfaces 32c and 33c are provided on the inner side wall portion 32 and the outer side wall portion 33, and the inclination angles θ1 and θ2 of the inclined surfaces 32c and 33c are set to 1 ° or more and 11 ° or less. Thereby, the productivity of the toilet seat 10 can be further improved.

FIG. 12 is a partial plan view showing a modified example of the toilet seat according to the first embodiment.
As shown in FIG. 12, the space between the inner non-welded portion 32b and the bottom plate portion 40 and the space between the outer non-welded portion 33b and the bottom plate portion 40 may be filled with a welding burr WB. That is, the inner non-welded portion 32b and the outer non-welded portion 33b may come into contact with the bottom plate portion 40 via the welding burr WB when the user is not seated on the seating portion 31.

In this way, the space between the inner non-welded portion 32b and the bottom plate portion 40 and the space between the outer non-welded portion 33b and the bottom plate portion 40 are filled with the welding burr WB. As a result, the welded burr WB can contribute to ensuring the strength, and the strength of the toilet seat 10 can be further improved.

(Second Embodiment)
13 (a) and 13 (b) are partial cross-sectional views showing a part of the toilet seat according to the second embodiment.
As shown in FIGS. 13 (a) and 13 (b), in this example, the bottom plate portion 40 has bottom plate ribs 45 and 46. Those having substantially the same functions and configurations as those of the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

The bottom plate rib 45 is provided so as to face the inner non-welded portion 32b and extends upward toward the inner non-welded portion 32b. The bottom plate rib 46 is provided so as to face the outer non-welded portion 33b, and extends upward toward the outer non-welded portion 33b.

The top plate portion 30 and the bottom plate portion 40 have a weld burr WB. The weld burr WB is provided in the space S1 surrounded by the bottom plate rib 45, the bottom plate portion 40, and the inner side wall portion 32. Similarly, the weld burr WB is provided in the space S2 surrounded by the bottom plate rib 46, the bottom plate portion 40, and the outer side wall portion 33.

FIG. 14 is a plan view showing a part of the toilet seat according to the second embodiment.
FIG. 14 shows a state in which only the bottom plate portion 40 is viewed from above. In FIG. 14, the bottom plate ribs 45 and 46 are hatched for convenience in order to easily distinguish them from other parts.

As shown in FIG. 14, the bottom plate rib 45 is, for example, an annular shape along the inner bottom plate welded portion 42. The bottom plate rib 45 is provided on the entire inner circumference of the toilet seat 10. For example, a plurality of bottom plate ribs 45 may be provided side by side along the inner bottom plate welding portion 42. The bottom plate rib 45 does not necessarily have to be provided on the entire circumference, and may be provided on at least a part of the inner circumference of the toilet seat 10.

The bottom plate rib 46 is, for example, substantially U-shaped along the outer bottom plate welding portion 43. One rear end 46a of the bottom plate rib 46 is located in front of the hinge portion 61. The other rear end 46b of the bottom plate rib 46 is located in front of the hinge portion 62. As described above, the bottom plate rib 46 is provided on the entire circumference of the outer circumference in front of the hinge portions 61 and 62 of the toilet seat 10. For example, a plurality of bottom plate ribs 46 may be provided side by side along the outer bottom plate welding portion 43. The bottom plate rib 46 does not necessarily have to be provided on the entire circumference, and may be provided on at least a part of the outer circumference in front of the hinge portions 61 and 62 of the toilet seat 10.

As described above, the bottom plate ribs 45 and 46 are provided on the rear end of the bottom plate portion 40 and on the inner peripheral side and the outer peripheral side in front of the hinge portions 61 and 62.

In the toilet seat 10 according to the present embodiment, the bottom plate portion 40 has bottom plate ribs 45 and 46. As a result, when the user is seated on the seating portion 31, the inner non-welded portion 32b and the bottom plate portion 40 can be easily brought into contact with each other via the bottom plate rib 45. When the user is seated on the seating portion 31, the outer non-welded portion 33b and the bottom plate portion 40 can be easily brought into contact with each other via the bottom plate rib 46. For example, the strength of the toilet seat 10 can be further improved.

Further, a welding burr WB is provided in the space S1 surrounded by the bottom plate rib 45, the bottom plate portion 40, and the inner side wall portion 32, and in the space S2 surrounded by the bottom plate rib 46, the bottom plate portion 40, and the outer side wall portion 33. Provide. As a result, the welded burr WB can contribute to ensuring the strength, and the strength of the toilet seat 10 can be further improved.

Further, by providing the bottom plate ribs 45 and 46, it is possible to prevent the welding burr WB from entering too much inside. The welded burr WB can be kept in the spaces S1 and S2. For example, it is possible to prevent the weld burr WB from adhering to the support 50, the heater inside, or the like. The reliability of the toilet seat 10 can be further improved.

Further, the bottom plate ribs 45 and 46 are provided on the inner peripheral side and the outer peripheral side in front of the hinge portions 61 and 62. Thereby, for example, the number of members can be reduced as compared with the case where the bottom plate rib 46 is provided on the entire circumference of the outer circumference. Further, as described above, in the rear end side wall portion 34 and the hinge portions 61 and 62, a welding method in which a joint is formed is used. In this case, even if the bottom plate ribs 46 are not provided at the rear ends of the bottom plate portion 40 and the hinge portions 61 and 62, the strength and reliability are not lowered.

(Third Embodiment)
15 (a) and 15 (b) are partial cross-sectional views showing a part of the toilet seat according to the third embodiment.
As shown in FIGS. 15 (a) and 15 (b), in this example, the inner non-welded portion 32b has an upper plate rib 32f. The outer non-welded portion 33b has an upper plate rib 33f. The upper plate ribs 32f and 33f extend downward toward the bottom plate portion 40.

The top plate portion 30 and the bottom plate portion 40 have a weld burr WB. The weld burr WB is provided in the space S3 surrounded by the upper plate rib 32f, the bottom plate portion 40, and the inner side wall portion 32. Similarly, the weld burr WB is provided in the space S4 surrounded by the upper plate rib 33f, the bottom plate portion 40, and the outer side wall portion 33.

FIG. 16 is a bottom view showing a part of the toilet seat according to the third embodiment.
FIG. 16 shows a state in which only the upper plate portion 30 is viewed from below. In FIG. 16, the upper plate ribs 32f and 33f are hatched for convenience in order to easily distinguish them from other parts.

As shown in FIG. 16, the upper plate rib 32f is, for example, an annular shape along the inner non-welded portion 32b. The upper plate rib 32f is provided on the entire inner circumference of the toilet seat 10. For example, a plurality of upper plate ribs 32f may be provided side by side along the inner non-welded portion 32b. The upper plate rib 32f does not necessarily have to be provided on the entire circumference, and may be provided on at least a part of the inner circumference of the toilet seat 10.

The upper plate rib 33f is, for example, substantially U-shaped along the outer non-welded portion 33b. One rear end 33g of the upper plate rib 33f is located in front of the hinge portion 61. The other rear end 33h of the upper plate rib 33f is located in front of the hinge portion 62. As described above, the upper plate rib 33f is provided on the entire circumference of the outer circumference in front of the hinge portions 61 and 62 of the toilet seat 10. For example, a plurality of upper plate ribs 33f may be provided side by side along the outer non-welded portion 33b. The upper plate rib 33f does not necessarily have to be provided on the entire circumference, and may be provided on at least a part of the outer periphery in front of the hinge portions 61 and 62 of the toilet seat 10.

As described above, the upper plate ribs 32f and 33f are provided on the inner peripheral side and the outer peripheral side in front of the hinge portions 61 and 62.

In the toilet seat 10 according to the present embodiment, the upper plate portion 30 has upper plate ribs 32f and 33f. Thereby, when the user is seated on the seating portion 31, the inner non-welded portion 32b and the bottom plate portion 40 can be easily brought into contact with each other via the upper plate rib 32f. When the user is seated on the seating portion 31, the outer non-welded portion 33b and the bottom plate portion 40 can be easily brought into contact with each other via the upper plate rib 33f. For example, the strength of the toilet seat 10 can be further improved.

Further, welding burrs are formed in the space S3 surrounded by the upper plate rib 32f, the bottom plate portion 40, and the inner side wall portion 32, and in the space S4 surrounded by the upper plate rib 33f, the bottom plate portion 40, and the outer side wall portion 33. WB is provided. As a result, the welded burr WB can contribute to ensuring the strength, and the strength of the toilet seat 10 can be further improved.

Further, by providing the upper plate ribs 32f and 33f, it is possible to prevent the welding burr WB from entering too much inside. The welded burr WB can be kept in the spaces S3 and S4. For example, it is possible to prevent the weld burr WB from adhering to the support 50, the heater inside, or the like. The reliability of the toilet seat 10 can be further improved.

Further, the upper plate ribs 32f and 33f are provided on the inner peripheral side and the outer peripheral side in front of the hinge portions 61 and 62. Thereby, for example, the number of members can be reduced as compared with the case where the upper plate rib 33f is provided on the entire circumference of the outer circumference. Further, as described above, in the rear end side wall portion 34 and the hinge portions 61 and 62, a welding method in which a joint is formed is used. In this case, even if the upper plate ribs 33f are not provided on the rear end side wall portions 34 and the hinge portions 61 and 62, the strength and reliability are not lowered.

The embodiments of the present invention have been described above. However, the present invention is not limited to these descriptions. With respect to the above-described embodiment, those skilled in the art with appropriate design changes are also included in the scope of the present invention as long as they have the features of the present invention. For example, the shape, size, material, arrangement, and the like of each element included in the toilet device 2 and the toilet seat 10 are not limited to those illustrated, and can be changed as appropriate.
In addition, the elements included in each of the above-described embodiments can be combined as much as technically possible, and the combination thereof is also included in the scope of the present invention as long as the features of the present invention are included.

2 Toilet device, 4 Toilet seat device, 6 Toilet bowl, 10 Toilet seat, 12 Toilet lid, 14 Main body, 30 Upper plate, 31 Seating part, 32 Inner side wall, 32a Inner upper plate welded part, 32b Inner non-welded part, 32c Inclined surface, 32d protruding part, 32f upper plate rib, 33 outer side wall part, 33a outer upper plate welding part, 33b outer non-welded part, 33c inclined surface, 33d protruding part, 33e inclined surface, 33f upper plate rib, 34 rear end Side wall, 34a welded part, 40 bottom plate part, 42 inner bottom plate welded part, 42a protruding part, 43 outer bottom plate welded part, 43a protruding part, 43b inclined surface, 44 welded part, 45, 46 bottom plate rib, 50 support, 51 Horizontal plate part, 52 vertical plate part, 61, 62 hinge part, BF back surface, FF facing surface, MF cutting surface, SF seating surface, SP internal space, WB welding burr

Claims (6)

An upper plate portion having a seating portion that supports the buttocks of the user and a side wall portion that extends downward from each of the inner peripheral side and the outer peripheral side of the seating portion.
A bottom plate portion having a bottom plate welded portion welded to the side wall portion and arranged to face the seating portion, and a bottom plate portion.
With
The upper plate portion
An upper plate welding portion provided on the outermost side at the lower end of the side wall portion and welded to the bottom plate welding portion,
A non-welded portion provided inside the upper plate welded portion at the lower end of the side wall portion and not weld-bonded to the bottom plate portion.
Have a,
The toilet seat is characterized in that the non-welded portion has a gap between the non-welded portion and the bottom plate portion and can come into contact with the bottom plate portion when the user is seated on the seated portion . The toilet seat according to claim 1, wherein the upper plate portion and the bottom plate portion have welding burrs in the gaps. An upper plate portion having a seating portion that supports the buttocks of the user and a side wall portion that extends downward from each of the inner peripheral side and the outer peripheral side of the seating portion.
A bottom plate portion having a bottom plate welded portion welded to the side wall portion and arranged to face the seating portion, and a bottom plate portion.
Hinge portions provided at the rear ends of the top plate portion and the bottom plate portion ,
With
The upper plate portion
An upper plate welding portion provided on the outermost side at the lower end of the side wall portion and welded to the bottom plate welding portion,
A non-welded portion provided inside the upper plate welded portion at the lower end of the side wall portion and not weld-bonded to the bottom plate portion.
Have,
The upper plate welds, stool seat you characterized in that provided on the inner peripheral side and outer peripheral side of the front than at least the hinge portion. An upper plate portion having a seating portion that supports the buttocks of the user and a side wall portion that extends downward from each of the inner peripheral side and the outer peripheral side of the seating portion.
A bottom plate portion having a bottom plate welded portion welded to the side wall portion and arranged to face the seating portion, and a bottom plate portion.
With
The upper plate portion
An upper plate welding portion provided on the outermost side at the lower end of the side wall portion and welded to the bottom plate welding portion,
A non-welded portion provided inside the upper plate welded portion at the lower end of the side wall portion and not weld-bonded to the bottom plate portion.
Have,
The bottom plate portion, the non-weld portion opposed to provided, stool seat you characterized in that it has a bottom plate ribs extending toward the non-weld portion. An upper plate portion having a seating portion that supports the buttocks of the user and a side wall portion that extends downward from each of the inner peripheral side and the outer peripheral side of the seating portion.
A bottom plate portion having a bottom plate welded portion welded to the side wall portion and arranged to face the seating portion, and a bottom plate portion.
With
The upper plate portion
An upper plate welding portion provided on the outermost side at the lower end of the side wall portion and welded to the bottom plate welding portion,
A non-welded portion provided inside the upper plate welded portion at the lower end of the side wall portion and not weld-bonded to the bottom plate portion.
Have,
The unwelded portion, stool seat you further comprising a top plate ribs extending toward the bottom plate portion. The toilet seat according to any one of claims 1 to 5 , wherein the outer surface of the side wall portion has an inclined surface that is inclined so that the distance from the seating portion increases toward the lower side.

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