JP6819209B2 - Toilet seat / lid manufacturing method and toilet seat device - Google Patents

Description

The present invention relates to a method for manufacturing a toilet seat / toilet lid and a toilet seat device.

Conventionally, a cushion rubber formed by injection molding using an elastomer has been known as a leg portion of a toilet lid. For example, Patent Document 1 discloses a cushion rubber for a toilet seat in which a polyolefin-based elastomer is added to a polypropylene-based resin material. According to the technique described in Patent Document 1, a cushion rubber for a toilet seat having excellent stain resistance, stain resistance, detergent resistance, wiping property, and scratch resistance is provided by a combination of a polypropylene resin and a polyolefin elastomer. It is said that it can be done.

It is also known that the legs of the toilet seat are integrally molded with the toilet seat. For example, Patent Document 2 discloses a toilet seat and legs integrally molded by injection molding of a thermoplastic resin material. According to the technique described in Patent Document 2, by integrating the toilet seat and the leg, there is no gap between the leg and the toilet seat, dirt does not enter, and a hygienic and inexpensive toilet seat is provided. It is said that it can be done.

Japanese Unexamined Patent Publication No. 2014-279777 Japanese Unexamined Patent Publication No. 2000-157450

However, in the technique described in Patent Document 1, although the antifouling property and the wiping property of the cushion rubber itself are improved, dirt easily enters the gap between the toilet lid and the cushion rubber, and the cleanliness and wiping property of the gap are improved. There's a problem. On the other hand, in the technique described in Patent Document 2, since the toilet seat and the legs are integrated, dirt does not enter between the toilet seat and the legs, but the legs are made of polypropylene resin and therefore inflexible. Sufficient and there is a problem with the impact resistance of the legs that come into contact with the toilet bowl when the toilet seat is installed on the toilet bowl. Further, since the leg portion formed of polypropylene resin has a smaller frictional force than the cushion rubber, there is a problem that the toilet seat is easily displaced in the lateral direction.

An object of the present invention is to achieve both cleanliness and impact resistance.

The present invention has taken the following measures to achieve the above-mentioned main object.

The method for manufacturing a toilet seat / lid of the present invention
A method for manufacturing a toilet seat / toilet lid that manufactures a toilet seat having a leg that contacts the toilet bowl on the back surface or a toilet lid that has a leg that contacts the toilet seat on the back surface.
A toilet seat / toilet lid molding mold for molding the toilet seat or the toilet lid having the recessed portion defining the insert region in which the leg portion is arranged and integrating the leg portion by insert molding is prepared.
The legs are preformed using an elastomeric material.
The leg portion is placed in the insert region in a state where the outer peripheral edge of the molded leg portion is floated from the toilet seat / toilet lid molding mold.
By injecting a resin material into the toilet seat / toilet lid molding mold, the toilet seat or the toilet lid with the outer peripheral edge of the leg embedded therein is molded.
The gist is that.

According to this method for manufacturing a toilet seat / toilet lid, the legs are preformed using an elastomer material, and the legs are placed in the insert region with the outer peripheral edge of the molded legs floating from the toilet seat / toilet lid molding mold. Then, the resin material is injected into the toilet seat / toilet lid molding mold. Since the resin material injected into the toilet seat / toilet lid molding mold flows into the outer surface side of the outer peripheral edge of the leg, the toilet seat / toilet lid in which the leg is integrated with the outer peripheral edge of the leg embedded inside. Is molded. As a result, the gap between the leg and the toilet seat / toilet lid can be reduced to prevent dirt from entering between the leg and the toilet seat / toilet lid. In addition, since the legs are molded using an elastomer material and then integrated with the toilet seat / toilet lid by insert molding, they are more likely to hit the toilet bowl or toilet seat than those whose legs are made of a resin material. The impact at the time of contact can be suppressed. As a result, it is possible to provide a toilet seat / toilet lid having legs that have both cleanliness and impact resistance.

In the method for manufacturing a toilet seat / toilet lid of the present invention, the leg portion having an outer surface inclined in an arc shape or a taper shape and having an outer peripheral diameter larger than the insert region is molded so that the outer peripheral edge becomes thinner toward the end portion. It is also possible to deform the outer peripheral edge of the leg portion by pushing the molded leg portion into the insert region so that the outer peripheral edge is floated from the toilet seat / toilet lid molding mold. Since the legs are molded from an elastomer material with excellent flexibility, the outer peripheral edge is easily deformed by simply pushing the legs into the insert area of the toilet seat / toilet lid molding mold, and the legs are lifted from the toilet seat / toilet lid molding mold. Can be.

Alternatively, in the method for manufacturing a toilet seat / toilet lid of the present invention, the outer surface side has a central portion having a shape that follows the shape of the recess portion and a flange portion extending in the outer radial direction from the inner surface side of the central portion. By forming a leg portion in which the outer surface of the outer peripheral edge is inclined in an arc shape or a taper shape and arranging the molded leg portion in the insert region, the inner peripheral edge of the flange portion is abutted against the opening edge of the recess portion, and the shape thereof is formed. It is also possible to make the outer peripheral edge of the flange portion float from the toilet seat / toilet lid molding mold. By doing so, the back surface of the toilet seat / toilet lid can be connected to the outer surface of the flange portion of the leg portion, so that the step between the leg portion and the toilet seat / toilet lid can be reduced and the gap can be reduced.

Further, in the method for manufacturing a toilet seat / toilet lid of the present invention, the face-to-face angle formed at the boundary between the toilet seat or the back surface of the toilet lid and the outer surface of the leg is formed to be 150 degrees or more and 180 degrees or less. It is also possible to set the conditions to mold the toilet seat or the toilet lid. By doing so, the outer surface of the leg and the back surface of the toilet seat / toilet lid are smoothly connected, so that dirt does not easily enter and the cleanliness can be further improved. The angle between the surfaces can be more preferably 160 degrees or more and 175 degrees or less.

Further, in the method for manufacturing a toilet seat / lid of the present invention, the leg is molded by injection molding using a thermoplastic elastomer having chemical resistance and an antibacterial agent as a material, and has chemical resistance and antibacterial effect. It is also possible to mold the toilet seat or the toilet lid with the legs integrated by insert molding using the thermoplastic resin to which the agent is added as a material. In this way, the cleanliness of the toilet seat or the toilet lid and legs can be further improved.

The toilet seat device of the present invention
A leg that is molded from an elastomeric material and has a central portion and an outer peripheral portion,
A toilet seat that is molded from a resin material and whose legs are integrated by insert molding so that the central portion is exposed and the outer peripheral edge portion is embedded inside the toilet seat.
The gist is to prepare.

The toilet seat device of the present invention includes a toilet seat in which a leg having a central portion and an outer peripheral portion is integrated by insert molding. The legs are integrated into the toilet seat so that the central portion is exposed and the outer peripheral edge is embedded inside the toilet seat. As a result, the gap between the leg and the toilet seat can be reduced to prevent dirt from entering between the leg and the toilet seat. Further, since the legs are formed of an elastomer material, the impact at the time of contact with the toilet bowl can be suppressed as compared with those formed of a resin material. As a result, it is possible to provide a toilet seat device that has both cleanliness and impact resistance.

It is an external view which shows the appearance of the toilet seat device 10 installed in the toilet bowl 1. It is a back view which shows the back surface of the toilet seat device 10. It is explanatory drawing which shows the toilet seat manufacturing process of 1st Example. It is a front view of the leg part 15 of 1st Example, and is the cross-sectional view taken over AA. It is explanatory drawing which shows the state of the insert molding of 1st Example. It is a partial sectional view of the toilet seat 14 in which a leg portion 15 is integrated. It is explanatory drawing which shows the state of the insert molding of the modification. It is a partial sectional view of the toilet seat 14 in which a leg portion 15B is integrated. It is explanatory drawing which shows the toilet seat manufacturing process of 2nd Example. It is a front view of the leg part 115 of 2nd Example, and the BB sectional view thereof. It is explanatory drawing which shows the state of the insert molding of the 2nd Example. It is a partial sectional view of the toilet seat 14 in which a leg portion 115 is integrated.

Next, a mode for carrying out the present invention will be described with reference to examples.

[First Example]
FIG. 1 is an external view showing the appearance of the toilet seat device 10 installed on the toilet bowl 1, and FIG. 2 is a back view showing the back surface of the toilet seat device 10. As shown in FIG. 1, the toilet seat device 10 is installed on the upper surface of the toilet bowl 1 and includes a main body 12, a toilet seat 14, a toilet lid 16, and an operation panel 18.

The main body 12 is installed behind the upper part of the toilet bowl 1, and is provided with a cleaning nozzle (not shown), a hot water supply device for supplying hot water to the cleaning nozzle, and the like.

The toilet seat 14 is swingably attached to the main body 12 so that the front portion can be moved up and down. The toilet seat 14 is formed by injection molding using a material obtained by adding an antibacterial agent to a thermoplastic resin such as polypropylene resin having excellent chemical resistance and impact resistance. Further, on the back surface of the toilet seat 14, as shown in FIG. 2, leg portions 15 are provided at two locations in the front portion and two locations in the rear portion, respectively. The leg portion 15 is a cushion rubber formed by injection molding using a material obtained by adding an antibacterial agent to a thermoplastic elastomer such as an olefin-based thermoplastic elastomer having excellent chemical resistance and flexibility, and the toilet seat 14 can be lowered. When it hits the upper surface of the toilet bowl 1, it absorbs the impact. In this embodiment, the leg portion 15 is integrally molded with the toilet seat 14 by insert molding.

Like the toilet seat 14, the toilet lid 16 is swingably attached to the main body 12 so that the front portion can be moved up and down. The toilet lid 16 is formed by injection molding using a material obtained by adding an antibacterial agent to a thermoplastic resin such as polypropylene resin having excellent chemical resistance and impact resistance. Further, on the back surface of the toilet lid 16, as shown in FIGS. 1 and 2, leg portions 17 are provided at two locations in the front portion. Like the leg portion 15, the leg portion 17 is a cushion rubber formed by injection molding using a material obtained by adding an antibacterial agent to a thermoplastic elastomer such as an olefin-based thermoplastic elastomer having excellent chemical resistance and flexibility. When the toilet lid 16 is lowered, it comes into contact with the upper surface of the toilet seat 14 to absorb the impact. In this embodiment, the leg portion 17 is formed as a separate body from the toilet lid 16, and is fixed to the toilet lid 16 by being fitted into the toilet lid 16.

The operation panel 18 has a start button for injecting wash water from a wash nozzle to start local washing, a stop button for stopping washing, a water force setting button for setting the water force of the washing water, and a washing water. A water temperature setting button and the like for setting the water temperature are provided.

Next, the manufacturing process of the toilet seat 14 in the toilet seat device 10 configured in this way will be described. FIG. 3 is an explanatory diagram showing an example of the toilet seat manufacturing process of the first embodiment. The toilet seat 14 is manufactured as follows. First, a toilet seat molding mold for molding a toilet seat 14 having an insert region in which the leg portion 15 is arranged and having the leg portion 15 integrated by insert molding is prepared (step S100). Next, a leg molding mold having an outer peripheral diameter of the leg portion 15 larger than the insert region of the toilet seat molding mold is prepared, and a thermoplastic elastomer material is injected into the leg molding mold to solidify the leg portion. 15 is molded (step S110). FIG. 4 is a front view of the leg portion 15 of the first embodiment and a sectional view thereof AA. In the first embodiment, the leg portion 15 is formed into a shape in which the short side of the rectangle is replaced with a semicircle when the outer surface is viewed from the front, and the leg portion 15 is formed to have a substantially uniform thickness toward the central portion 15a and the end portion. It has an outer peripheral edge portion 15b whose outer surface is inclined in an arc shape so as to become thinner, and a projecting portion 15c vertically protruding from the inner surface (back surface) of the central portion 15a. Here, the angle θt formed by the outer surface and the inner surface of the outer peripheral edge portion 15b can be, for example, 40 to 50 degrees. The outer peripheral edge portion 15b is formed so that the outer surface is inclined in an arc shape, but the outer peripheral edge portion 15b may be formed in a linearly inclined tapered shape.

Then, the leg portion 15 is pushed into the insert region of the toilet seat molding mold so that the outer peripheral edge portion 15b of the leg portion 15 floats from the toilet seat molding mold (step S120), and the thermoplastic resin material is injected into the toilet seat molding mold and solidified. To form the toilet seat 14 in which the legs 15 are integrated (step S130).

FIG. 5 is an explanatory view showing a state of insert molding of the first embodiment, and FIG. 6 is a partial cross-sectional view of the toilet seat 14 in which the leg portion 15 is integrated. Here, the broken line in FIG. 5A indicates the insert region of the toilet seat molding mold 20. The toilet seat molding mold 20 has a recessed portion 21 that defines an insert region in which the leg portion 15 is arranged (see FIG. 5A). The recessed portion 21 is formed so that the inner peripheral diameter is slightly smaller than the outer peripheral diameter of the leg portion 15 and the depth is deeper than the thickness of the central portion 15a of the leg portion 15. Therefore, when the leg portion 15 is pushed into the recessed portion 21 (insert region), the outer peripheral edge portion 15b is deformed (curled) toward the inner surface (back surface) side, and the outer peripheral edge portion 15b is the toilet seat molding mold 20 (recessed portion 21). It floats from the inner peripheral surface) (see FIG. 5 (b)). When the thermoplastic resin material R is injected into the toilet seat molding mold 20 in this state, the thermoplastic resin material R flows into the gap between the outer surface of the outer peripheral edge portion 15b of the leg portion 15 and the inner peripheral surface of the recessed portion 21. Therefore, the toilet seat 14 integrated with the leg portion 15 is formed with the outer peripheral edge portion 15b embedded inside (see FIG. 5C). Since the depth of the recessed portion 21 is deeper than the thickness of the central portion 15a of the leg portion 15, the toilet seat 14 in which the leg portion 15 is integrated has a convex portion 14b protruding from the back surface 14a, and the top of the convex portion 14b. It is joined to the leg 15 at the surface (see FIG. 6). The interfacet angle θb formed at the boundary between the outer surface of the outer peripheral edge portion 15b of the leg portion 15 and the outer peripheral surface of the convex portion 14b of the toilet seat 14 is adjusted by molding conditions such as the temperature and pressure of the material poured into the toilet seat molding mold 20. It is possible to make the temperature within the range of 160 degrees or more and 175 degrees or less. As a result, the boundary between the leg portion 15 and the toilet seat 14 is smoothly connected, so that it is possible to prevent dirt from entering the boundary. The inter-face angle θb is preferably within the range of 160 degrees or more and 175 degrees or less in consideration of the smoothness of the boundary between the leg portion 15 and the toilet seat 14 and the ease of molding, but is 150 degrees or more. It may be within the range of 180 degrees or less, or may be less than 150 degrees.

In the method for manufacturing the toilet seat / toilet lid of the first embodiment described above, the leg portion 15 is preformed by injecting a thermoplastic elastomer material into the leg molding mold, and the outer peripheral edge portion 15b of the molded leg portion 15 is formed. The leg portion 15 is placed in the insert region while floating from the toilet seat molding mold 20, and the resin material is injected into the toilet seat molding mold 20. Since the resin material injected into the toilet seat molding mold 20 flows into the outer surface side of the outer peripheral edge portion 15b of the leg portion 15, the toilet seat 14 in which the leg portion 15 is integrally molded with the outer peripheral edge portion 15b embedded inside is formed. It is molded. As a result, the gap between the leg portion 15 and the toilet seat 14 is reduced, and dirt is less likely to enter the boundary. Further, since the leg portion 15 (cushion rubber) is molded from the thermoplastic elastomer material having excellent flexibility, the leg portion 15 can easily follow the shape of the upper surface of the toilet bowl 1, and the impact when the user sits on the toilet seat 14 is generated. It is possible to reduce rattling and slippage, and to improve sitting comfort. As a result, it is possible to provide a toilet seat 14 having a leg portion 15 that has both cleanliness and impact resistance.

Further, in the method of manufacturing the toilet seat / toilet lid of the first embodiment, the outer surface is inclined so that the outer peripheral edge portion 15b becomes thinner toward the end portion, and the outer peripheral diameter becomes larger than the insert region of the toilet seat molding mold 20. The portion 15 is molded, and the molded leg portion 15 is pushed into the insert region so that the outer peripheral edge portion 15b of the leg portion 15 is lifted from the toilet seat molding mold 20. Since the leg portion 15 is formed of a thermoplastic elastomer material having excellent flexibility, the outer peripheral edge portion 15b can be easily deformed and lifted from the toilet seat molding mold 20 simply by pressing the leg portion 15 against the insert region.

Further, in the method for manufacturing the toilet seat / toilet lid of the first embodiment, the leg portion 15 is first molded using the leg molding mold, and then the leg portion 15 is arranged in the insert region of the toilet seat molding mold 20 to form the leg. The toilet seat 14 in which the portion 15 is integrated is formed. When the toilet seat 14 is first molded using the toilet seat molding die 20 and then the toilet seat 14 is arranged in the leg molding die to form the leg portion 15 in which the toilet seat 14 is integrated, the toilet seat 14 is formed into the leg molding die. There is a risk that the toilet seat 14 will be scratched when it is placed in the mold, but according to the method for manufacturing the toilet seat / toilet lid of the first embodiment, the toilet seat 14 once molded is not placed in the molding mold again. It is possible to prevent the toilet seat 14 from being damaged.

Further, in the method for manufacturing the toilet seat / toilet lid of the first embodiment, the leg portion 15 having the joint surface with the toilet seat 14 has a protruding portion 15c on the inner surface (back surface) and is joined to the toilet seat 14 on the entire inner surface (back surface). Therefore, the contact area between the leg portion 15 and the toilet seat 14 can be increased, and the fixing force between the toilet seat 14 and the leg portion 15 can be improved.

In the embodiment, a leg portion 15 having an outer surface inclined in an arc shape or a taper shape and having an outer peripheral diameter larger than the insert region of the toilet seat molding mold 20 is molded so that the outer peripheral edge portion 15b becomes thinner toward the end portion. By pushing the portion 15 into the insert region, the outer peripheral edge portion 15b of the leg portion 15 is deformed so that the outer peripheral edge portion 15b is floated from the toilet seat molding mold 20. However, without deforming the outer peripheral edge of the leg, the leg is molded so that the outer peripheral edge floats from the toilet seat molding mold when the leg is placed in the insert region. May be good. FIG. 7 is an explanatory view showing a state of insert molding of a modified example, and FIG. 8 is a partial cross-sectional view of a toilet seat 14 in which a leg portion 15B is integrated. In this modification, as shown in FIG. 7, the leg portion 15B inclined so that the outer surface of the outer peripheral edge portion is separated from the inner peripheral surface of the recessed portion 21 is arranged in the insert region of the toilet seat molding die 20 to form the toilet seat molding die. The thermoplastic resin material R is injected into 20. As a result, the thermoplastic resin material R flows into the outer surface side of the outer peripheral edge portion of the leg portion 15B. Therefore, as shown in FIG. 8, the leg portion 15B is embedded in the outer surface side of the outer peripheral edge portion of the leg portion 15B. The toilet seat 14 integrated with the above is molded.

In the embodiment, the protruding portion 15c is provided on the inner surface (back surface) of the leg portion 15 (central portion 15a), but a concave groove may be formed. Even in this case, the contact area between the leg portion 15 and the toilet seat 14 can be increased, and the fixing force between the leg portion 15 and the toilet seat 14 can be improved. Further, the inner surface (back surface) of the leg portion 15 may be a flat surface having neither a protruding portion nor a concave groove.

In the embodiment, the legs 15 are integrally molded at the two front portions and the rear portions of the back surface 14a of the toilet seat 14, but the legs may be integrally molded on the entire back surface of the toilet seat 14. Good. In this case, since there is no gap between the toilet seat 14 and the toilet bowl 1, it is possible to prevent excrement and water from splashing out of the toilet bowl. Further, by covering the entire back surface of the toilet seat 14 with legs having a high cushioning property, it is possible to avoid stress concentration when the user sits on the toilet seat 14, so that damage due to impact can be effectively suppressed. it can.

In the embodiment, the leg portion 15 integrally molded with the toilet seat 14 is molded in a shape in which the short side of the rectangle is replaced with a semicircle in the front view, but the present invention is not limited to this, and the leg portion 15 is circular in the front view. It may be formed into any shape such as an ellipse, a square, or a rectangle.

[Second Example]
In the first embodiment, the leg portion 15 having the outer peripheral edge portion 15b that becomes thinner toward the end portion is integrated with the toilet seat 14, but in the second embodiment, the leg portion having the flange portion is integrated with the toilet seat 14. It is to be integrated. FIG. 9 is an explanatory diagram showing a toilet seat manufacturing process of the second embodiment.

In the toilet seat manufacturing step of the second embodiment, a toilet seat molding die 20 similar to step S100 is prepared (step S200), a leg molding die in which a leg having a flange portion is molded is prepared, and the leg molding die is used. A thermoplastic elastomer material is injected to form the legs (step S210). FIG. 10 is a front view of the leg portion 115 of the second embodiment and a sectional view thereof taken along the line BB. As shown in the figure, the leg portion 115 has a central portion 115a that is thicker than the depth of the recessed portion 21 of the toilet seat molding mold 20, and a flange portion 115b that extends from the inner surface (back surface) side of the central portion 115a in the outer diameter direction. The flange portion 115b is formed so that the outer surface of the outer peripheral edge portion 115c is inclined in an arc shape. The outer peripheral edge portion 115c is formed so that the outer surface is inclined in an arc shape, but the outer peripheral edge portion 115c may be formed in a linearly inclined tapered shape.

Then, the molded leg 115 is placed in the insert region of the toilet seat molding mold 20 (step S220), and the thermoplastic resin material is injected into the toilet seat molding mold 20 and solidified to solidify the toilet seat 14 in which the leg 115 is integrated. (Step S230).

FIG. 11 is an explanatory view showing a state of insert molding of the second embodiment, and FIG. 12 is a partial cross-sectional view of the toilet seat 14 in which the leg portion 115 is integrated. Here, the broken line in FIG. 11A indicates the insert region of the toilet seat molding mold 20. The recessed portion 21 is recessed in a shape that follows the shape of the outer surface of the central portion 115a of the leg portion 115, and is formed so that the depth substantially matches the distance from the outer surface of the flange portion 115b to the outer surface of the central portion 115a. There is. Further, as described above, the flange portion 115b of the leg portion 115 is formed so that the outer surface of the outer peripheral edge portion 115c is inclined in an arc shape. Therefore, when the leg portion 115 is arranged in the recessed portion 21 (insert region), the inner peripheral edge portion of the flange portion 115b abuts against the opening edge of the recessed portion 21, and the outer peripheral edge portion 115c floats from the toilet seat molding mold 20. (See FIG. 11 (b)). When the thermoplastic resin material R is injected into the toilet seat molding mold 20 in this state, the thermoplastic resin material R flows into the outer surface side of the outer peripheral edge portion 115c of the flange portion 115b, so that the outer peripheral edge portion 115c of the flange portion 115b is inside. A toilet seat 14 integrated with the leg 115 is formed while being embedded in the toilet seat (see FIG. 11 (c)). Since the depth of the recessed portion 21 is shallower than the thickness of the central portion 115a of the leg portion 115 (distance from the inner surface (back surface) to the outer surface of the central portion 115a), the toilet seat 14 in which the leg portion 115 is integrated has the back surface 114a. A recess 114b recessed from the surface is formed and joined to the leg 115 at the bottom surface and the inner peripheral surface of the recess 114b (see FIG. 12). The interfacet angle θb formed at the boundary between the outer surface of the leg portion 115 (flange portion 115b) and the back surface 114a of the toilet seat 14 is the temperature and pressure of the material to be poured into the toilet seat molding mold 20 as in the first embodiment. It can be adjusted according to the molding conditions, and is preferably in the range of 160 degrees or more and 175 degrees or less. Of course, it may be within the range of 150 degrees or more and 180 degrees or less, or may be less than 150 degrees. In this second embodiment, the inner surface (back surface) of the leg portion 115 is a flat surface, but a protruding portion may be provided or a concave groove may be formed.

In the embodiment, the present invention has been described by applying the present invention to a device in which a leg portion 15 provided on the front portion of the toilet seat 14 and a leg portion 15 provided on the rear portion are integrally molded on the toilet seat 14, but the leg portion of the front portion. It may be applied to the one in which only 15 is integrally molded with the toilet seat 14, or the one in which only the rear leg portion 15 is integrally molded with the toilet seat 14. Further, in the examples, the present invention has been described by applying the leg portion 15 to the one integrally molded with the toilet seat 14, but the leg portion 17 may be applied to the one integrally molded with the toilet lid 16. That is, according to the present invention, a toilet lid molding mold having an insert region (dented portion) is prepared, a leg portion is molded in advance using an elastomer material, and the molded leg portion is placed in the insert region to form a toilet lid molding mold. It may be in the form of a method for manufacturing a toilet lid in which a toilet lid with integrated legs is formed by injecting a resin material.

As for the correspondence between the main elements of the examples and the main elements of the invention described in the column of means for solving the problem, the invention described in the column of means for solving the problem in the examples is carried out. Since it is an example for specifically explaining the form for solving the problem, the elements of the invention described in the column of means for solving the problem are not limited. That is, the interpretation of the invention described in the column of means for solving the problem should be performed based on the description in the column, and the examples are the inventions described in the column of means for solving the problem. It is just a concrete example.

Although the embodiments for carrying out the present invention have been described above with reference to examples, the present invention is not limited to these examples, and various embodiments are used without departing from the gist of the present invention. Of course, it can be done.

The present invention can be used in the manufacturing industry of toilet seats and toilet lids.

1 toilet bowl, 10 toilet seat device, 12 main body, 14 toilet seat, 14a, 114a back surface, 14b convex part, 114b concave part, 15, 15B, 115 legs, 15a, 115a central part, 15b outer peripheral part, 115b flange part, 15c protrusion Part, 115c outer peripheral part, 16 toilet lid, 17 legs, 18 operation panel, 20 toilet seat molding mold, 21 recess, R thermoplastic resin material.

Claims (4)

A method for manufacturing a toilet seat / toilet lid that manufactures a toilet seat having a leg that contacts the toilet bowl on the back surface or a toilet lid that has a leg that contacts the toilet seat on the back surface.
A toilet seat / toilet lid molding mold for molding the toilet seat or the toilet lid having the recessed portion defining the insert region in which the leg portion is arranged and integrating the leg portion by insert molding is prepared.
The legs are preformed using an elastomeric material.
The leg portion is placed in the insert region in a state where the outer peripheral edge of the molded leg portion is floated from the toilet seat / toilet lid molding mold.
Is intended to mold the toilet seat or the service lid outer periphery of the leg portion is embedded therein by injecting resin material into said toilet seat toilet lid mold,
By forming the leg portion having an outer peripheral surface larger than the insert region while the outer surface is inclined in an arc shape or a taper shape so that the outer peripheral edge becomes thinner toward the end portion, and the formed leg portion is pushed into the insert region. The outer peripheral edge of the leg is deformed so that the outer peripheral edge is floated from the toilet seat / toilet lid molding mold.
How to manufacture toilet seats and lids. A method for manufacturing a toilet seat / toilet lid that manufactures a toilet seat having a leg that contacts the toilet bowl on the back surface or a toilet lid that has a leg that contacts the toilet seat on the back surface.
A toilet seat / toilet lid molding mold for molding the toilet seat or the toilet lid having the recessed portion defining the insert region in which the leg portion is arranged and integrating the leg portion by insert molding is prepared.
The legs are preformed using an elastomeric material.
The leg portion is placed in the insert region in a state where the outer peripheral edge of the molded leg portion is floated from the toilet seat / toilet lid molding mold.
By injecting a resin material into the toilet seat / toilet lid molding mold, the toilet seat or the toilet lid with the outer peripheral edge of the leg embedded therein is molded.
A leg portion having a central portion whose outer surface side follows the shape of the recess portion and a flange portion extending in the outer diameter direction from the inner surface side of the central portion, and the outer surface of the outer peripheral edge of the flange portion is inclined in an arc shape or a taper shape. And by arranging the molded leg portion in the insert region, the inner peripheral edge of the flange portion is abutted against the opening edge of the recessed portion, and the outer peripheral edge of the flange portion is formed from the toilet seat / toilet lid molding mold. Keep it floating,
How to manufacture toilet seats and lids. The method for manufacturing a toilet seat / toilet lid according to claim 1 or 2 .
The toilet seat or the toilet lid is molded by setting molding conditions so that the angle between the surfaces formed at the boundary between the back surface of the toilet seat or the toilet lid and the outer surface of the leg is 150 degrees or more and 180 degrees or less. ,
How to manufacture toilet seats and lids. The method for manufacturing a toilet seat / toilet lid according to any one of claims 1 to 3 .
The legs are molded by injection molding using a thermoplastic elastomer having chemical resistance and an antibacterial agent as a material.
The toilet seat or the toilet lid with the legs integrated is molded by insert molding using a thermoplastic resin having chemical resistance and an antibacterial agent added.
How to manufacture toilet seats and lids.

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