JP7432142B2 - Toilet seat and toilet lid - Google Patents

Description

Aspects of the present invention generally relate to toilet seats and toilet lids.

BACKGROUND ART Toilet seats manufactured by molding materials containing resin have been known (for example, Patent Document 1). As a material for such a toilet seat, for example, an inexpensive resin such as polypropylene (PP) is used. However, when a toilet seat is molded using a resin such as PP, there is a problem that the surface of the toilet seat is easily scratched when wiping the toilet paper dry due to its low surface hardness.

Japanese Patent Application Publication No. 2000-308601

The top surface of the toilet seat is a part that is touched by the user and easily gets dirty, so it is often wiped dry with toilet paper. On the other hand, the sides of the toilet seat are less likely to get dirty, so they are wiped with toilet paper less frequently than the top surface. Therefore, if the toilet seat is installed for a long period of time, the top surface of the toilet seat, which is frequently wiped dry, is more likely to be scratched than the side surfaces of the seat, which are wiped dry less frequently. In this way, if there are more scratches on the top of the toilet seat than on the sides of the toilet seat, the scratches on the top of the toilet seat will stand out in comparison with the sides of the toilet seat, causing a problem that the overall appearance of the toilet seat will deteriorate. .

The present invention has been made based on the recognition of this problem, and an object of the present invention is to provide a toilet seat and a toilet lid that can prevent the appearance from deteriorating even if the surface is damaged by wiping or the like.

A first invention includes a lower surface, an upper surface located above the lower surface, and a side surface connecting the lower surface and the upper surface, and includes a thermoplastic resin, and the surface hardness of the upper surface is equal to that of the side surface. This toilet seat is characterized by a hardness greater than that of the surface.

According to this toilet seat, by making the surface hardness of the top surface of the toilet seat larger than the surface hardness of the side surfaces of the toilet seat, the scratch resistance of the top surface of the toilet seat can be made higher than the scratch resistance of the side surfaces of the toilet seat. As a result, the top surface of the toilet seat is less likely to be scratched compared to the side surfaces of the toilet seat, and scratches on the top surface of the toilet seat can be prevented from being more noticeable than the side surfaces of the toilet seat. Therefore, even if the surface is scratched by wiping or cleaning, deterioration of the appearance can be suppressed.

A second invention is the toilet seat according to the first invention, wherein the surface hardness of the lower surface is greater than the surface hardness of the side surface.

The underside of the toilet seat is also easily wiped clean because urine and water splashing from the toilet bowl tend to get dirty. Therefore, according to this toilet seat, by making the surface hardness of the lower surface of the toilet seat larger than the surface hardness of the side surfaces of the toilet seat, the scratch resistance of the lower surface of the toilet seat can be made higher than the scratch resistance of the side surfaces of the toilet seat. As a result, the bottom surface of the toilet seat is less likely to be scratched compared to the side surfaces of the toilet seat, and scratches on the bottom surface of the toilet seat can be prevented from being more noticeable than the side surfaces of the toilet seat. Therefore, even if the surface is scratched by wiping or cleaning, deterioration of the appearance can be suppressed.

A third invention is based on the first or second invention, wherein the side surface has an elevated surface and a curved surface connecting the upper surface and the elevated surface, and the curved surface has one end attached to the upper surface. The toilet seat is connected to the vertical surface at the other end, and the surface hardness of the curved surface decreases from the one end to the other end.

According to this toilet seat, by decreasing the surface hardness of the curved surface of the side surface from one end on the upper surface side toward the other end on the vertical surface side, it is possible to suppress scratches from becoming noticeable even on the curved surface. Thereby, deterioration of the appearance can be further suppressed.

A fourth invention is the toilet seat according to any one of the first to third inventions, characterized in that the surface roughness of the top surface is smaller than the surface roughness of the side surface.

According to this toilet seat, by making the surface roughness of the top surface of the toilet seat smaller than the surface roughness of the sides of the toilet seat, the top surface of the toilet seat, which is easier to see from the user, is smoother than the sides of the toilet seat, which is easier to see from the user, and the appearance can be improved. Furthermore, by making the top surface of the toilet seat, which is easy to touch with the user's skin, smoother than the side surfaces of the toilet seat, which are difficult to touch with the user's skin, the user can use the toilet seat more comfortably.

In a fifth invention, in any one of the first to fourth inventions, the thermoplastic resin is a crystalline resin, and the thermoplastic resin is heated to a higher temperature than the mold by the heating part. The toilet seat is characterized in that it is formed by filling a material, gradually cooling the material, and further cooling the mold using a cooling section to harden the material.

According to this toilet seat, the toilet seat contains crystalline resin, and a mold heated by a heating section is filled with a material heated to a higher temperature than the mold, the material is gradually cooled, and then the mold is molded by a cooling section. By cooling and molding the material to harden it, crystallization near the surface can be promoted and the surface hardness can be increased. This further suppresses scratches on the surface.

A sixth invention is a toilet lid comprising a top surface and a side surface connected to the top surface, comprising a thermoplastic resin, and wherein the top surface has a surface hardness greater than the surface hardness of the side surface. be.

According to this toilet lid, by making the surface hardness of the top surface of the toilet lid greater than the surface hardness of the sides of the toilet lid, the scratch resistance of the top surface of the toilet lid can be made higher than that of the sides of the toilet lid. can. As a result, the top surface of the toilet lid is less likely to be scratched, and scratches on the top surface of the toilet lid can be prevented from being more noticeable compared to the side surfaces of the toilet lid. Therefore, even if the surface is scratched by wiping or cleaning, deterioration of the appearance can be suppressed.

According to the aspect of the present invention, it is possible to provide a toilet seat and a toilet lid that can suppress deterioration in appearance even if the surface is damaged by wiping or the like.

FIG. 1 is a perspective view showing a toilet device including a toilet seat according to an embodiment. It is an exploded perspective view showing a toilet seat concerning an embodiment. It is a perspective sectional view showing a part of toilet seat concerning an embodiment. FIG. 2 is a cross-sectional view schematically showing the vicinity of the surface of the toilet seat according to the embodiment. 5(a) to 5(c) are cross-sectional views showing a part of the manufacturing process of the toilet seat according to the embodiment. It is a perspective sectional view showing a part of toilet lid concerning an embodiment.

Embodiments of the present invention will be described below with reference to the drawings. Note that in each drawing, similar components are denoted by the same reference numerals, and detailed description thereof will be omitted as appropriate.
FIG. 1 is a perspective view showing a toilet device including a toilet seat according to an embodiment.
As shown in FIG. 1, the toilet device 500 includes a toilet seat device 100 and a Western-style seated toilet bowl (hereinafter simply referred to as "toilet bowl") 200.

The toilet seat device 100 is mounted on top of the toilet bowl 200. The toilet seat device 100 may be attached integrally to the toilet bowl 200, or may be attached to the toilet bowl 200 in a detachable manner. The toilet seat device 100 includes a toilet seat 10, a toilet lid 20, and a main body portion 30.

Here, in this specification, the upper side as viewed from the user sitting on the toilet seat 10 is referred to as the "upper side", and the lower side as seen from the user sitting on the toilet seat 10 is referred to as the "lower side". In addition, the left and right directions as viewed from the user sitting on the toilet seat 10 with his/her back to the toilet lid 20 in an open state are referred to as "left side" and "right side," respectively, and the front and rear directions are respectively referred to as "front" and "backward." ”. FIG. 1 shows an example of an upper UW, a lower DW, a left side LW, a right side RW, a front FW, and a rear BW.

The toilet bowl 200 has a bowl portion 200a that is recessed downward. The toilet bowl 200 receives the user's excreta such as urine and feces at the bowl portion 200a. The main body part 30 of the toilet seat device 100 is provided at the upper part behind the bowl part 200a of the toilet bowl 200. The main body portion 30 pivotally supports the toilet seat 10 and the toilet lid 20 so as to be openable and closable.

The toilet seat 10 has an opening 10h. The toilet seat 10 is provided on the toilet bowl 200 so as to surround the outer edge of the bowl part 200a, and the bowl part 200a is exposed through the opening 10h. Thereby, the user can defecate into the bowl part 200a while sitting on the toilet seat 10. This example shows a so-called O-shaped toilet seat 10 in which a through-hole-like opening 10h is formed. The toilet seat 10 is not limited to an O-shape, but may be U-shape or the like. Inside the toilet seat 10, a heater or the like is provided as appropriate to warm the seat portion (the portion that contacts the user's buttocks).

FIG. 2 is an exploded perspective view showing the toilet seat according to the embodiment.
FIG. 3 is a perspective sectional view showing a part of the toilet seat according to the embodiment.
As shown in FIGS. 2 and 3, the toilet seat 10 includes a bottom plate 11, a top plate 12, a first joining member 13, and a second joining member 14. The top plate 12 is provided above the bottom plate 11. The first joining member 13 is provided on the inner peripheral side of the toilet seat 10 and joins the bottom plate 11 and the top plate 12. The second joining member 14 is provided on the outer peripheral side of the toilet seat 10 and joins the bottom plate 11 and the top plate 12.

A more specific structure of the toilet seat 10 will be described below. Note that directions such as "upward" and "downward" refer to the state in which the bottom plate 11 of the toilet seat 10 is placed on a horizontal surface (the state in which the bottom plate 11 of the toilet seat 10 is placed on the toilet bowl 200 and the user can sit on it). I use it as a standard.

As shown in FIG. 2, the bottom plate 11 and the top plate 12 each have an opening 11h and an opening 12h. The shape of the bottom plate 11 and the top plate 12 when viewed from above is substantially the same as the shape of the toilet seat 10 when viewed from above. That is, the shape of the bottom plate 11 and the top plate 12 when viewed from above is annular or U-shaped. The opening 11h of the bottom plate 11 and the opening 12h of the top plate 12 form an opening 10h of the toilet seat 10.

The bottom plate 11 has a bottom plate base 11a, an inner peripheral support part 11b, and an outer peripheral support part 11c. The bottom plate base portion 11a has a substantially uniform thickness, and, for example, the front portion is provided along the horizontal direction, and the rear portion is inclined upward. Support legs 11d that are in contact with the top surface of the toilet bowl 200 are appropriately provided on the bottom plate base 11a. The inner peripheral support portion 11b is provided on the inner peripheral side of the toilet seat 10 with respect to the bottom plate base portion 11a. The outer peripheral support portion 11c is provided on the outer peripheral side of the toilet seat 10 with respect to the bottom plate base portion 11a.

The upper plate 12 has a seating portion 12a, an inner circumferential side wall portion 12b, and an outer circumferential side wall portion 12c. The seating portion 12a supports the buttocks of a user seated on the toilet seat 10 from below. The seating portion 12a is supported from below by an inner circumferential side wall portion 12b and an outer circumferential side wall portion 12c. The inner peripheral side wall portion 12b is provided on the inner peripheral side of the toilet seat 10 with respect to the seating portion 12a. The outer peripheral side wall portion 12c is provided on the outer peripheral side of the toilet seat 10 with respect to the seating portion 12a.

As shown in FIG. 3, the inner peripheral side wall portion 12b is provided on the inner peripheral support portion 11b of the bottom plate 11. The outer peripheral side wall portion 12c is provided on the outer peripheral support portion 11c of the bottom plate 11. The lower end of the inner peripheral side wall portion 12b is joined to the inner peripheral support portion 11b by a first joining member 13. The lower end of the outer peripheral side wall portion 12c is joined to the outer peripheral support portion 11c by a second joining member 14.

The bottom plate base 11a and the seating portion 12a are spaced apart in the vertical direction. Moreover, the inner peripheral side wall part 12b and the outer peripheral side wall part 12c are spaced apart in the horizontal direction. Thereby, an internal space S surrounded by the bottom plate 11 and the top plate 12 is formed in the toilet seat 10.

In addition, when the toilet seat 10 is U-shaped, the inner peripheral support part 11b and the outer peripheral support part 11c are connected around the bottom plate base 11a, and the inner peripheral side wall part 12b and the outer peripheral side wall part 12c are connected around the seating part 12a. They may be connected. In this case, the first joining member 13 and the second joining member 14 may be continuous and integrally provided around the bottom plate base 11a.

Further, as shown in FIG. 3, the toilet seat 10 has a lower surface 10a, an upper surface 10b, an inner surface 10c, and an outer surface 10d. The lower surface 10a is a surface of the toilet seat 10 that faces downward. The upper surface 10b is a surface of the toilet seat 10 that faces upward. The upper surface 10b is located above the lower surface 10a. The inner surface 10c is a surface facing the inner peripheral side of the toilet seat 10. The outer surface 10d is a surface facing the outer circumferential side of the toilet seat 10. The inner surface 10c connects the lower surface 10a and the upper surface 10b on the inner peripheral side of the toilet seat 10. The outer surface 10d connects the lower surface 10a and the upper surface 10b on the outer peripheral side of the toilet seat 10. Hereinafter, the inner surface 10c and the outer surface 10d will be simply referred to as "side surfaces".

In this example, the lower surface of the bottom plate base 11a of the bottom plate 11, the lower surface of the inner peripheral support part 11b, and the lower surface of the outer peripheral support part 11c constitute the lower surface 10a of the toilet seat 10. Further, the first joining member 13 has an exposed surface 13a that is exposed to the outside between the inner peripheral support portion 11b of the bottom plate 11 and the inner peripheral side wall portion 12b of the top plate 12. The second joining member 14 has an exposed surface 14a exposed to the outside between the outer peripheral support portion 11c of the bottom plate 11 and the outer peripheral side wall portion 12c of the upper plate 12. The exposed surface 13a and the exposed surface 14a are each located on the lower surface 10a of the toilet seat 10. In other words, the exposed surface 13a and the exposed surface 14a each constitute the lower surface 10a of the toilet seat 10.

Further, in this example, the upper surface of the seating portion 12a of the upper plate 12 constitutes the upper surface 10b of the toilet seat 10. Further, the inner circumferential side surface of the inner circumferential wall portion 12b of the top plate 12 constitutes the inner circumferential surface 10c of the toilet seat 10. Further, the outer circumferential side surface of the outer circumferential side wall portion 12c of the upper plate 12 constitutes an outer circumferential surface 10d of the toilet seat 10.

The inner surface 10c and the outer surface 10d (side surfaces) each have an elevated surface 10e and a curved surface 10f. The vertical surface 10e is a surface extending substantially vertically. The curved surface 10f is a surface that curves from the vertical surface 10e toward the top surface 10b and connects the top surface 10b and the vertical surface 10e. The curved surface 10f is connected at one end (upper end) to the upper surface 10b, and at the other end (lower end) to the vertical surface 10e.

FIG. 4 is a cross-sectional view schematically showing the vicinity of the surface of the toilet seat according to the embodiment.
As shown in FIG. 4, the toilet seat 10 includes a thermoplastic resin 18a. For example, a crystalline resin is used as the thermoplastic resin 18a. As the thermoplastic resin, for example, PP or polybutylene terephthalate (PBT) is used.

As shown in FIG. 4, the toilet seat 10 may further include an inorganic filler 18b. The inorganic filler 18b is a filler made of an inorganic material. As the inorganic filler 18b, for example, a fibrous inorganic filler such as glass fiber is used. The inorganic filler 18b does not have to be fibrous. Further, the inorganic filler 18b may be, for example, a mineral such as an acicular mineral, a plate-like mineral, or a frit mineral. When using glass fiber as the inorganic filler 18b, it is preferable to use a glass fiber having a fiber diameter of 6 μm or more and 24 μm or less (for example, about 13 μm) and a length of 10 μm or more and 3000 μm or less (for example, 300 μm or more and 1000 μm or less). The amount of inorganic filler 18b contained in toilet seat 10 is 5 parts by mass or more and 30 parts by mass or less (for example, about 10 parts by mass) with respect to 100 parts by mass of the total of thermoplastic resin 18a and inorganic filler 18b (toilet seat 10). It is preferable that

In the embodiment, among the bottom plate 11, top plate 12, first bonding member 13, and second bonding member 14 that constitute the toilet seat 10, at least the top plate 12 is made of thermoplastic resin 18a, inorganic filler 18b, It is preferable to include. Moreover, it is also preferable that the bottom plate 11 contains the thermoplastic resin 18a and the inorganic filler 18b. The first joining member 13 and the second joining member 14 may contain the thermoplastic resin 18a and may not contain the inorganic filler 18b, or may contain the thermoplastic resin 18a and the inorganic filler 18b. When the first bonding member 13 and the second bonding member 14 contain the inorganic filler 18b, the amount of the inorganic filler 18b contained in the first bonding member 13 or the second bonding member 14 is equal to the amount of the inorganic filler 18b contained in the upper plate 12. It is preferable that the amount is smaller than at least one of the amount and the amount of the inorganic filler 18b contained in the bottom plate 11.

The surface hardness of the top surface 10b of the toilet seat 10 is greater than the surface hardness of the side surfaces of the toilet seat 10. Here, the "side surface" of the toilet seat 10 is at least one of the inner surface 10c and the outer surface 10d of the toilet seat 10. That is, the surface hardness of the upper surface 10b of the toilet seat 10 is greater than at least one of the surface hardness of the inner surface 10c and the surface hardness of the outer surface 10d of the toilet seat 10. The surface hardness of the upper surface 10b of the toilet seat 10 is preferably greater than the surface hardness of the inner surface 10c of the toilet seat 10 and greater than the surface hardness of the outer surface 10d.

The surface hardness of the upper surface 10b of the toilet seat 10 is, for example, a pencil hardness of B or higher, preferably a pencil hardness of HB or higher. The surface hardness of the side surfaces of the toilet seat 10 is lower than the surface hardness of the top surface 10b of the toilet seat 10 by one rank or more on the pencil hardness scale. That is, for example, when the surface hardness of the top surface 10b of the toilet seat 10 is B in pencil hardness, the surface hardness of the side surfaces of the toilet seat 10 is 2B or less in pencil hardness. For example, when the surface hardness of the top surface 10b of the toilet seat 10 is HB in pencil hardness, the surface hardness of the side surfaces of the toilet seat 10 is B or less in pencil hardness, preferably B. For example, when the surface hardness of the top surface 10b of the toilet seat 10 is F in terms of pencil hardness, the surface hardness of the side surfaces of the toilet seat 10 is less than or equal to HB in terms of pencil hardness, preferably HB. For example, when the surface hardness of the top surface 10b of the toilet seat 10 is H in pencil hardness, the surface hardness of the side surfaces of the toilet seat 10 is F or less in pencil hardness. The surface hardness of the side surface of the toilet seat 10 is, for example, 6B or more and 2B or less in pencil hardness, preferably 2B in pencil hardness.

Surface hardness can be determined as pencil hardness according to JIS K 5600-5-4:1999. For example, the surface hardness of the center of the upper surface 10b in the left-right direction between the inner surface 10c and the outer surface 10d can be regarded as a representative value of the surface hardness of the upper surface 10b. For example, the surface hardness at the center in the vertical direction of the inner surface 10c or the outer surface 10d can be regarded as a representative value of the surface hardness of the side surface.

In this way, by making the surface hardness of the top surface 10b of the toilet seat 10 greater than the surface hardness of the side surfaces of the toilet seat 10, the scratch resistance of the top surface 10b of the toilet seat 10 can be made higher than the scratch resistance of the side surfaces of the toilet seat 10. . Thereby, the upper surface 10b of the toilet seat 10 is less likely to be scratched than the side surfaces of the toilet seat 10, and scratches on the upper surface 10b of the toilet seat 10 can be prevented from being more noticeable than the side surfaces of the toilet seat 10. Therefore, even if the surface is scratched by wiping or cleaning, deterioration of the appearance can be suppressed.

Further, the surface hardness of the lower surface 10a of the toilet seat 10 is, for example, greater than the surface hardness of the side surfaces of the toilet seat 10. That is, the surface hardness of the lower surface 10a of the toilet seat 10 is greater than at least one of the surface hardness of the inner surface 10c and the surface hardness of the outer surface 10d of the toilet seat 10. The surface hardness of the lower surface 10a of the toilet seat 10 is preferably greater than the surface hardness of the inner surface 10c of the toilet seat 10 and greater than the surface hardness of the outer surface 10d.

The surface hardness of the lower surface 10a of the toilet seat 10 is, for example, a pencil hardness of B or higher, preferably a pencil hardness of HB or higher. The surface hardness of the lower surface 10a of the toilet seat 10 is, for example, the same as the surface hardness of the upper surface 10b of the toilet seat 10. For example, the surface hardness of the lower surface 10a at the center in the left-right direction between the inner surface 10c and the outer surface 10d can be regarded as a representative value of the surface hardness of the lower surface 10a.

The lower surface 10a of the toilet seat 10 also tends to get dirty with urine and splashed water from the toilet bowl 200, so it is wiped relatively frequently. Therefore, by making the surface hardness of the lower surface 10a of the toilet seat 10 greater than the surface hardness of the side surfaces of the toilet seat 10, the scratch resistance of the lower surface 10a of the toilet seat 10 can be made higher than the scratch resistance of the side surfaces of the toilet seat 10. Thereby, the lower surface 10a of the toilet seat 10 is less likely to be scratched than the side surface of the toilet seat 10, and scratches on the lower surface 10a of the toilet seat 10 can be prevented from being more noticeable than the side surfaces of the toilet seat 10. Therefore, even if the surface is scratched by wiping or cleaning, deterioration of the appearance can be suppressed.

Further, among the side surfaces of the toilet seat 10, the surface hardness of the curved surface 10f decreases from one end (the upper surface 10b side) to the other end (the vertical surface 10e side), for example. The surface hardness at one end of the curved surface 10f is, for example, the same as the surface hardness at the upper surface 10b. The surface hardness at the other end of the curved surface 10f is, for example, the same as the surface hardness at the vertical surface 10e.

In this way, by decreasing the surface hardness of the curved surface 10f of the side surfaces of the toilet seat 10 from one end on the top surface 10b side to the other end on the vertical surface 10e side, it is possible to suppress scratches from becoming noticeable even on the curved surface 10f. can. Thereby, deterioration of the appearance can be further suppressed.

The surface roughness of the top surface 10b of the toilet seat 10 is smaller than the surface roughness of the side surfaces of the toilet seat 10. That is, the surface roughness of the upper surface 10b of the toilet seat 10 is smaller than at least one of the surface roughness of the inner surface 10c and the surface roughness of the outer surface 10d of the toilet seat 10. The surface roughness of the upper surface 10b of the toilet seat 10 is preferably smaller than the surface roughness of the inner surface 10c of the toilet seat 10 and smaller than the surface roughness of the outer surface 10d.

The surface roughness can be determined as the arithmetic mean height Sa in accordance with ISO 25178-2:2012. The arithmetic mean height is determined using, for example, an Olympus laser microscope OLS4100, magnification setting: 20x, imaging setting: high speed/auto, range: 2900 μm x 2900 μm, measurement setting: line roughness analysis, filter setting: noise. Measurement can be performed with the following settings: removal, surface correction, cutoff wavelength: λc = 80μ, evaluation area: 2900μm x 2900μm, filter: Gaussian filter.

In this way, by making the surface roughness of the top surface 10b of the toilet seat 10 smaller than the surface roughness of the side surfaces of the toilet seat 10, the top surface 10b of the toilet seat 10, which is more visible to the user, is made to be more visible than the side surfaces of the toilet seat 10, which are more visible to the user. Can be smoothed and improve appearance. Furthermore, by making the top surface 10b of the toilet seat 10, which is easy to touch with the user's skin, smoother than the side surfaces of the toilet seat 10, which are difficult to touch with the user's skin, the user can use the toilet seat 10 more comfortably.

Hereinafter, the manufacturing process of the toilet seat 10 according to the embodiment will be explained.
The toilet seat 10 is constructed by, for example, producing a bottom plate 11 and a top plate 12 by molding a material containing the above-mentioned resin, and joining the bottom plate 11 and top plate 12 with a first joining member 13 and a second joining member 14. It can be manufactured by Below, the process of forming the bottom plate 11 and the top plate 12 will be explained in detail.

5(a) to 5(c) are cross-sectional views showing a part of the manufacturing process of the toilet seat according to the embodiment.
As shown in FIGS. 5(a) to 5(c), a mold M used for molding the bottom plate 11 and the top plate 12 is provided with a heating section H and a cooling section C.

In the manufacturing process, first, as shown in FIG. 5(a), a mold M heated by a heating section H is filled with a material X containing the above crystalline resin or the like. At this time, the material X is filled into the mold M while being heated to a higher temperature than the mold M. In other words, the material X is filled into a mold M heated to a temperature equal to or higher than the heat distortion temperature (ISOR 75) by minus 30° C. and lower than the temperature of the injection cylinder, while being heated by the injection cylinder. As a result, the material X is gradually cooled in the mold M. Next, as shown in FIG. 5(b), the mold M is cooled by the cooling part C, so that the material X is cooled and hardened inside the mold M. Next, as shown in FIG. 5(c), the molded toilet seat 10 (bottom plate 11 and top plate 12) is taken out from the mold M by hardening the material X.

In this way, the mold M heated by the heating part H is filled with the material X heated to a higher temperature than the mold M, the material X is gradually cooled, and the mold M is further cooled by the cooling part C. By molding the toilet seat 10 by hardening the material X, crystallization near the surface of the toilet seat 10 can be promoted and the surface hardness of the toilet seat 10 can be increased. Thereby, scratches on the surface of the toilet seat 10 can be further suppressed.

For example, when molding the toilet seat 10, by making the heating/cooling conditions for the top surface 10b of the toilet seat 10 different from the heating/cooling conditions for the side surface of the toilet seat 10, the surface hardness of the top surface 10b of the toilet seat 10 can be adjusted. surface hardness. More specifically, for example, when material X is gradually cooled and hardened as shown in FIG. The surface hardness of the top surface 10b of the toilet seat 10 is made larger than the surface hardness of the side surfaces of the toilet seat 10 by making the lowering speed smaller than the lowering speed (that is, hardening the top surface 10b of the toilet seat 10 more slowly than the side surfaces of the toilet seat 10). can do.

FIG. 6 is a perspective sectional view showing a part of the toilet lid according to the embodiment.
As shown in FIG. 6, the toilet lid 20 has an upper surface 20a and a side surface 20b. The upper surface 20a is a surface of the toilet lid 20 that faces upward. The side surface 20b is a surface facing the outer peripheral side of the toilet lid 20. The side surface 20b extends downward from the top surface 20a on the outer peripheral side of the toilet lid 20.

Note that herein, directions such as "upward" and "downward" are based on the state in which the toilet lid 20 is lowered (the state in which it is placed on the toilet seat 10).

The toilet lid 20 contains thermoplastic resin. The toilet lid 20 may further contain an inorganic filler. As the thermoplastic resin and inorganic filler, the same ones as the above-mentioned thermoplastic resin 18a and inorganic filler 18b can be used.

The surface hardness of the top surface 20a of the toilet lid 20 is greater than the surface hardness of the side surface 20b of the toilet lid 20. The surface hardness of the upper surface 20a of the toilet lid 20 is, for example, a pencil hardness of B or higher, preferably a pencil hardness of HB or higher. The surface hardness of the side surface 20b of the toilet lid 20 is lower than the surface hardness of the upper surface 20a of the toilet lid 20 by one rank or more on the pencil hardness scale. The surface hardness of the side surface 20b of the toilet lid 20 is, for example, 6B or more and 2B or less in pencil hardness, preferably 2B in pencil hardness. Surface hardness can be determined as pencil hardness according to JIS K 5600-5-4:1999. For example, the surface hardness at the center in the left-right direction of the upper surface 20a can be regarded as a representative value of the surface hardness of the upper surface 20a. For example, the surface hardness at the center in the vertical direction of the side surface 20b can be regarded as a representative value of the surface hardness of the side surface 20b.

In this way, by making the surface hardness of the top surface 20a of the toilet lid 20 larger than the surface hardness of the side surfaces 20b of the toilet lid 20, the scratch resistance of the top surface 20a of the toilet lid 20 is made higher than that of the side surfaces 20b of the toilet lid 20. can also be made higher. Thereby, the top surface 20a of the toilet lid 20 is less likely to be scratched compared to the side surface 20b of the toilet lid 20, and scratches on the top surface 20a of the toilet lid 20 can be prevented from being more noticeable compared to the side surface 20b of the toilet lid 20. Therefore, even if the surface is scratched by wiping or cleaning, deterioration of the appearance can be suppressed.

The toilet lid 20 can be manufactured in the same manner as the toilet seat 10. That is, the toilet lid 20, for example, fills a mold M heated by a heating part H with a material X heated to a higher temperature than the mold M, gradually cools the material Molding can be performed by cooling the mold M and hardening the material X.

In this way, the mold M heated by the heating part H is filled with the material X heated to a higher temperature than the mold M, the material X is gradually cooled, and the mold M is further cooled by the cooling part C. By hardening and molding the material X, crystallization near the surface of the toilet lid 20 can be promoted and the surface hardness of the toilet lid 20 can be increased. Thereby, damage to the surface of the toilet lid 20 can be further suppressed.

As described above, according to the embodiment, it is possible to provide a toilet seat and a toilet lid that can suppress deterioration of the appearance even if the surface is scratched by wiping or the like.

The embodiments of the present invention have been described above. However, the invention is not limited to these descriptions. Appropriate design changes made by those skilled in the art with respect to the above-described embodiments are also included within the scope of the present invention as long as they have the characteristics of the present invention. For example, the shape, size, material, arrangement, installation form, etc. of each element included in the toilet seat, toilet lid, etc. are not limited to those illustrated, and can be changed as appropriate.
Furthermore, the elements of each of the embodiments described above can be combined to the extent technically possible, and combinations of these are also included within the scope of the present invention as long as they include the features of the present invention.

10 toilet seat, 10a lower surface, 10b upper surface, 10c inner surface, 10d outer surface, 10e vertical surface, 10f curved surface, 10h opening, 11 bottom plate, 11a bottom plate base, 11b inner peripheral support section, 11c outer peripheral support section, 11d support foot , 11h opening, 12 upper plate, 12a seating section, 12b inner wall, 12c outer wall, 12h opening, 13, 14 first and second joining members, 13a, 14a exposed surface, 18a thermoplastic resin, 18b inorganic filler, 20 toilet lid, 20a top surface, 20b side surface, 30 main body, 100 toilet seat device, 200 toilet bowl, 200a bowl part, 500 toilet device, C cooling part, H heating part, M mold, S internal space, X material

Claims (6)

The bottom surface and
an upper surface located above the lower surface;
a side surface connecting the lower surface and the upper surface;
Equipped with
Contains thermoplastic resin,
The surface hardness of the top surface is greater than the surface hardness of the side surface,
A toilet seat characterized in that the surface hardness of the lower surface is greater than the surface hardness of the side surface . The bottom surface and
an upper surface located above the lower surface;
a side surface connecting the lower surface and the upper surface;
Equipped with
Contains thermoplastic resin,
The surface hardness of the top surface is greater than the surface hardness of the side surface,
The thermoplastic resin is a crystalline resin,
Filling a mold heated by a heating part with a material heated to a higher temperature than the mold, gradually cooling the material, and further cooling the mold by a cooling part to harden the material. A toilet seat characterized by being molded . The toilet seat according to claim 2 , wherein the surface hardness of the lower surface is greater than the surface hardness of the side surface. The side surface has an elevated surface and a curved surface that connects the upper surface and the elevated surface,
The curved surface is connected to the upper surface at one end and connected to the vertical surface at the other end,
The toilet seat according to any one of claims 1 to 3 , wherein the surface hardness of the curved surface decreases from the one end to the other end. The toilet seat according to any one of claims 1 to 4 , wherein the surface roughness of the top surface is smaller than the surface roughness of the side surface. The top surface and
a side surface connected to the top surface;
Equipped with
Contains thermoplastic resin,
A toilet lid characterized in that the surface hardness of the top surface is greater than the surface hardness of the side surface.

Images