JP2014188070A - Heated toilet seat device, and manufacturing method of heated toilet seat device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heated toilet seat device and a manufacturing method of the heated toilet seat device, that can suppress an influence of a difference between heat contraction of a resin and heat contraction of a metal.SOLUTION: A heated toilet seat device can increase the temperature of a toilet seat by using an induction heating system, and comprises: a base material part made of a resin; a heated electric conductor provided on the base material part in a certain region including a seating surface of the toilet seat, and inductively heated by a magnetic field; and a surface part provided on the heated electric conductor and forming the seating surface of the toilet seat. The heated electric conductor includes an aggregate formed of metal fibers and its whole structure has stretchability.

Description

  Aspects of the present invention generally relate to a heating toilet seat device that can warm a toilet seat provided in a toilet and a method for manufacturing the heating toilet seat device.

  In order to increase the temperature of the toilet seat quickly and save energy, a heating toilet seat device using the principle of induction heating has been proposed. As such a heating toilet seat, for example, an induction heating power source that outputs an alternating voltage, an induction heating coil that generates a magnetic field by a current from the power source, and a heating conduction that generates heat by an induction current induced by the magnetic field generated from the coil And a body (Patent Document 1). In the heating toilet seat device described in Patent Document 1, a thin-walled heating conductor is provided on the surface layer portion of the toilet seat so that the temperature of the toilet seat at the time of sitting becomes a comfortable temperature in a shorter time.

  Here, the thermal contraction rate of the resin is substantially constant, whereas the thermal contraction rate of the metal is very small as compared with the thermal contraction rate of the resin. Therefore, when the heating toilet seat device is formed by the injection molding method, the metal may not be able to follow the change in the thermal contraction of the resin due to the temperature change before and after the injection molding in the molded toilet seat. As a result, sink marks and warpage occur in the toilet seat, and there is a problem that the surface smoothness and the external dimensions targeted for the design cannot be secured.

  The influence due to the temperature change is not limited to the temperature change during the manufacturing process, but is also caused by the temperature change during use. That is, the distance between adjacent heating conductors may change due to a temperature change during use of the heating toilet seat device. Then, the subject that the amount of leakage magnetic field cannot be kept substantially constant arises, for example.

JP 2012-70899 A

  The present invention has been made on the basis of recognition of such a problem, and provides a heating toilet seat device and a manufacturing method of the heating toilet seat device capable of suppressing the influence of the difference between the heat shrinkage of the resin and the heat shrinkage of the metal. The purpose is to do.

  1st invention is a heating toilet seat apparatus which can heat up a toilet seat by an induction heating system, Comprising: On the base material part in the fixed area | region including the base material part formed with resin and the seating surface of the toilet seat A heating conductor that is induction-heated by a magnetic field and a surface layer portion that is provided on the heating conductor and forms a seating surface of the toilet seat, wherein the heating conductor is formed of a metal fiber. It is a heating toilet seat device characterized by having a stretchable structure as a whole including the assembled body.

  According to the heating toilet seat device, the heating conductor includes an aggregate in which metal is formed in a fiber shape, and has elasticity as a whole structure. According to this, even if the thermal contraction rate of the base material portion is different from the thermal contraction rate of the heating conductor, the heating conductor is affected by the change in the thermal contraction of the base material portion due to the temperature change during use of the heating toilet seat device. Can follow.

  Thereby, the position of a heating conductor can be fixed more reliably. Therefore, the influence at the time of use of a heating toilet seat apparatus can be suppressed. That is, the distance between adjacent heating conductors can be kept substantially constant, and the amount of leakage magnetic field of the entire heating toilet seat device can be minimized. Thereby, the influence of the difference between the heat shrinkage of the resin and the heat shrinkage of the metal can be suppressed.

  A second invention is the heating toilet seat device according to the first invention, wherein the heating conductor is formed of a single wire or a stranded wire and has a thread shape or a spring shape.

  According to this heating toilet seat device, even when the heating conductor is made of metal, the entire structure has elasticity due to a relatively simple structure.

  A third invention is the heating toilet seat device according to the second invention, wherein the heating conductor is formed in a single thread shape or a spring shape.

  According to this heating toilet seat device, it is possible to reduce the number of steps when the heating conductor is installed on the base member.

  4th invention is 2nd or 3rd invention, The said base material part is provided in the recessed part which fixes the said heating conductor, and the convex part which is provided in the side surface of the upper part of the said recessed part, and hooks the said heating conductor, It is a heating toilet seat apparatus characterized by having.

  According to the heating toilet seat device, the heating conductor can be fixed inside the concave portion while being hooked on the convex portion. That is, the convex portion can prevent the heating conductor from coming off from the concave portion, and can hold the heating conductor inside the concave portion. Thereby, even if the heating conductor generates heat and expands, the influence on the base material portion can be suppressed, and the shapes of the base material portion, the surface layer portion, and the heating conductor can be stabilized. Further, the heating conductor is fixed in a state of being tightened in the inner peripheral direction of the toilet seat. Therefore, the heating conductor can be prevented from loosening and the heating conductor can be more reliably fixed.

  A fifth invention is a method for manufacturing a heating toilet seat device capable of raising the temperature of a toilet seat by an induction heating method, wherein the heating conductor is formed of a resin and heated by induction by a magnetic field. A heating layer that includes an assembly formed in a fibrous shape and has elasticity as a whole structure is fixed on the base portion in a predetermined region including the seating surface of the toilet seat, and forms a seating surface of the toilet seat The heating toilet seat device manufacturing method is characterized in that a part is formed on the heating conductor.

  According to the method for manufacturing the heating toilet seat device, the heating conductor includes an aggregate in which metal is formed in a fiber shape, and has elasticity as a whole structure. Thereby, even if the thermal contraction rate of the base material portion is different from the thermal contraction rate of the heating conductor, the heating conductor does not cause the thermal contraction of the base material portion due to temperature change before and after the injection molding (injection molding) of the surface layer portion. Can follow changes. For this reason, it is possible to suppress the occurrence of sink marks or warpage in the base material portion and the surface layer portion, and to ensure the surface smoothness and the external dimensions targeted for the design.

  ADVANTAGE OF THE INVENTION According to the aspect of this invention, the heating toilet seat apparatus which can suppress the influence of the difference between the thermal contraction of resin and the thermal contraction of a metal, and the manufacturing method of a heating toilet seat apparatus are provided.

It is a typical perspective view which illustrates the toilet apparatus provided with the heating toilet seat apparatus concerning embodiment of this invention. It is a typical perspective view showing the toilet seat of this embodiment. It is typical sectional drawing in cut surface AA represented to FIG. It is typical sectional drawing explaining the eddy current which arises in the heating conductor of this embodiment. It is a typical perspective view which illustrates the installation form of the heating conductor of this embodiment. It is a typical perspective view showing the modification of the installation form of the heating conductor of this embodiment. It is a typical perspective view showing the other modification of the installation form of the heating conductor of this embodiment. It is a typical perspective view showing the modification of the heating conductor of this embodiment. It is typical sectional drawing showing the modification of the toilet seat of this embodiment. It is a flowchart figure which illustrates the manufacturing method of the heating toilet seat apparatus concerning this embodiment.

Embodiments of the present invention will be described below with reference to the drawings. In addition, in each drawing, the same code | symbol is attached | subjected to the same component and detailed description is abbreviate | omitted suitably.
FIG. 1 is a schematic perspective view illustrating a toilet apparatus including a heated toilet seat apparatus according to an embodiment of the invention.

  The toilet apparatus 10 illustrated in FIG. 1 includes a western-style seat toilet 800 and a heated toilet seat apparatus 100 provided thereon. The heating toilet seat device 100 includes a casing 400, a toilet seat 200, and a toilet lid 300. The toilet seat 200 and the toilet lid 300 are pivotally supported with respect to the casing 400 so as to be freely opened and closed. The toilet lid 300 can cover the toilet seat 200 in the closed state.

FIG. 2 is a schematic perspective view showing the toilet seat of the present embodiment.
FIG. 3 is a schematic cross-sectional view taken along a cutting plane AA shown in FIG.
For convenience of explanation, the toilet seat 200 shown in FIG. 2 exemplifies the heating conductor 230 having five turns, and the toilet seat 200 shown in FIG. 3 exemplifies the heating conductor 230 having three turns. Yes. However, the number of turns of the heating conductor 230 is not limited to this.

As illustrated in FIGS. 2 and 3, the toilet seat 200 according to the present embodiment includes a base material part 210, a surface layer part 220, and a heating conductor 230.
The base material part 210 is made of a resin such as polypropylene (PP).
The surface layer portion 220 is provided on the base material portion 210 in a state where the toilet seat 200 is closed, and forms a seating surface 221. The surface layer portion 220 is formed of a resin having a shape following property. The surface layer 220 is formed of an elastomer containing a resin component such as polypropylene and a rubber component, for example. The compounding ratio of the rubber component is, for example, about 60 barcent (%).

  In the present specification, “shape following” refers to the property that an object or a part conforms to an arbitrary shape or a property that follows. In the present specification, “having shape following” or “high shape following” means at least one of relatively easy to deform, soft, low rigidity, and low Young's modulus. It shall be said.

  In the present embodiment, the shape followability of the surface layer portion 220 is higher than the shape followability of the base material portion 210. For example, the tensile modulus (corresponding to the Young's modulus of the metal) of the surface layer 220 is about 3 to 7 megapascals (MPa). The tensile elastic modulus of the base material part 210 is about 1700-1900 MPa.

  As shown in FIG. 3, an induction heating coil 260 is provided inside the base material part 210. The induction heating coil 260 generates a magnetic field when a high frequency current is applied. The induction heating coil 260 is connected to a high-frequency power supply circuit (not shown) by, for example, a litz wire having a structure in which a plurality of individually insulated conductor wires are twisted together.

  The heating conductor 230 is provided between the base material part 210 and the surface layer part 220. In the present embodiment, the heating conductor 230 is provided on the base member 210 in a certain region including the seating surface of the toilet seat 200. Specifically, the heating conductor 230 is fixed to a recess 211 provided in the upper part of the base material part 210. The heating conductor 230 is induction heated by the magnetic field generated from the induction heating coil 260.

  As the heating conductor 230, for example, a metal such as a ferromagnetic material such as iron or stainless steel or a paramagnetic material such as aluminum is used. Or as the heating conductor 230, it is not limited to a metal, For example, conductors, such as carbon, may be used. In the present embodiment, the heating conductor 230 includes an aggregate in which metals are formed in a fiber shape. The heating conductor 230 may be formed of a single wire or a plurality of wires such as a stranded wire. The heating conductor 230 has a thread shape or a spring shape. Therefore, even if the heating conductor 230 is made of metal, it has stretchability as a whole structure. Examples of such a heating conductor 230 include a thread (metal thread) formed of a metal such as stainless steel. In this case, the diameter of the stainless steel metal thread is, for example, about 0.7 millimeters (mm).

FIG. 4 is a schematic cross-sectional view for explaining an eddy current generated in the heating conductor of the present embodiment.
4 is a schematic cross-sectional view taken along a cutting plane BB shown in FIG.

  As shown in FIG. 4, when a high frequency current flows through the induction heating coil 260, a magnetic field 501 is generated around the induction heating coil 260. When a magnetic field 501 is generated around the induction heating coil 260, an eddy current 503 induced by the magnetic field 501 flows through the heating conductor 230 as indicated by an arrow B1 shown in FIG. The heating conductor 230 generates heat due to Joule heat generated when the eddy current 503 flows through the heating conductor 230.

  According to the present embodiment, the heating toilet seat device 100 can rapidly heat the seating surface of the toilet seat 200 by using the principle of induction heating, and the seating surface can be appropriately heated earlier. Moreover, since the heating toilet seat apparatus 100 concerning this embodiment can heat the seating surface of the toilet seat 200 rapidly, when the user is not using the toilet seat 200, it is not necessary to keep the toilet seat 200 warm. Therefore, energy saving can be achieved.

FIG. 5 is a schematic perspective view illustrating the installation form of the heating conductor according to this embodiment.
FIG. 5A is a schematic perspective view illustrating an example in which the convex portion is connected to one surface of the side surfaces of the concave portion. FIG. 5B is a schematic perspective view illustrating an example in which the convex portion is connected to both sides of the side surface of the concave portion.

As described above with reference to FIG. 3, the heating conductor 230 is fixed to the concave portion 211 of the base portion 210.
In the specific example shown in FIG. 5A, a convex portion 213 a is provided on the upper portion of the concave portion 211. In FIG. 5A, one convex portion 213a is shown, but in this specific example, a plurality of convex portions 213a are provided over substantially the entire concave portion 211 and are separated from each other. The convex portion 213 a is connected to one surface of the side surfaces of the concave portion 211. The upper surface of the convex portion 213 a is formed at substantially the same height as the upper surface of the base material portion 210. The width D <b> 1 of the recess 211 shown in FIG. 5A is larger than the diameter of the heating conductor 230. The depth D <b> 2 of the recess shown in FIG. 5A is larger than the diameter of the heating conductor 230.

  According to this, the heating conductor 230 can be fixed inside the concave portion 211 in a state where it is hooked on the convex portion 213a. That is, the convex portion 213 a can suppress the heating conductor 230 from being detached from the concave portion 211, and can hold the heating conductor 230 inside the concave portion 211. Thereby, even if the heating conductor 230 generates heat and expands, the influence on the base material part 210 can be suppressed, and the shapes of the base material part 210, the surface layer part 220, and the heating conductor 230 can be stabilized. Further, the heating conductor 230 is fixed in a state of being tightened in the inner peripheral direction of the toilet seat 200. Therefore, the heating conductor 230 can be prevented from being loosened, and the heating conductor 230 can be more reliably fixed.

  In the specific example shown in FIG. 5B, a convex portion 213 b is provided on the upper portion of the concave portion 211. The convex portion 213 b is connected to both sides of the side surface of the concave portion 211. The upper surface of the convex portion 213 b is formed at a position lower than the upper surface of the base material portion 210. The width D <b> 3 of the recess 211 shown in FIG. 5B is larger than the diameter of the heating conductor 230. The depth D4 of the concave portion shown in FIG. 5B is larger than the diameter of the heating conductor 230. In this specific example, a plurality of convex portions 213b are provided and separated from each other. As shown in FIG. 5B, the heating conductor 230 is passed between the adjacent convex portions 213b, and is positioned above the convex portion 213b and below the adjacent convex portion 213b. They are arranged alternately.

  According to this, the effect described above with reference to FIG. 5A can be obtained, and the heating conductor 230 can be fixed inside the concave portion 211 in a state of being reliably hooked by the convex portion 213a. Therefore, it is possible to more reliably suppress the heating conductor 230 from being loosened.

  Here, the thermal contraction rate of the resin is substantially constant, whereas the thermal contraction rate of the metal is very small as compared with the thermal contraction rate of the resin. Therefore, the distance between the adjacent heating conductors 230 may change due to a temperature change during use of the heating toilet seat device. Then, for example, the amount of the leakage magnetic field may not be kept substantially constant.

  On the other hand, the heating conductor 230 of the present embodiment includes an aggregate in which metal is formed in a fiber shape, and has elasticity as a whole structure. According to this, even if the thermal contraction rate of the base material part 210 is different from the thermal contraction rate of the heating conductor 230, the heating conductor 230 is not affected by the temperature change during use of the heating toilet seat device 100. It can follow changes in heat shrinkage.

  Thereby, the position of the heating conductor 230 can be more reliably fixed. Therefore, the influence at the time of use of the heating toilet seat apparatus 100 can be suppressed. That is, the distance between the adjacent heating conductors 230 can be kept substantially constant, and the amount of the entire leakage magnetic field of the heating toilet seat device 100 can be minimized. Thereby, the influence of the difference between the heat shrinkage of the resin and the heat shrinkage of the metal can be suppressed.

Next, a modification of the installation form of the heating conductor according to this embodiment will be described with reference to the drawings.
FIG. 6 is a schematic perspective view showing a modification of the installation form of the heating conductor according to the present embodiment.
Fig.6 (a) is a typical perspective view showing the whole toilet seat concerning this modification. FIG. 6B is a schematic enlarged view of the region A1 shown in FIG.

  The heating conductor 230 described above with reference to FIG. 2 has an installation form in which one linear body is continuous, or an installation form in which a single thread or spring is formed. In other words, the heating conductor 230 described above with reference to FIG. 2 is installed in a form called, for example, “spiral” or “bobbin”. According to this, the number of processes when the heating conductor 230 is installed in the concave portion 211 of the base material part 210 can be reduced.

On the other hand, as shown in FIG. 6B, the heating conductor 230 provided on the toilet seat 200a according to the present modification has a continuous linear arrangement or a single thread or spring. It has a formed installation form and is installed in a bent state at a predetermined location.
According to this, the installation of the heating conductor 230 at the location corresponding to the rear part of the user's butt seated on the toilet seat 200 can be made symmetrically and evenly spaced. Therefore, the user hardly feels temperature unevenness.

  FIG. 7 is a schematic perspective view showing another modification of the installation form of the heating conductor according to the present embodiment. The heating conductor 230 provided in the toilet seat 200b according to this modification has an installation form in which a plurality of linear bodies are provided. That is, the heating conductor 230 of the present modification includes a first heating body 231, a second heating body 232, a third heating body 233, a fourth heating body 234, and a fifth heating body 235. And having. The first to fifth heating elements 231, 232, 233, 234, and 235 form closed circuits, respectively. That is, the first heating body 231 forms one closed circuit. The same applies to the second to fifth heating elements 232, 233, 234, and 235.

  As shown in FIG. 7, the first heating body 231 is electrically connected to the high-frequency circuit (not shown) and the second to fifth heating bodies 232, 233, 234, and 235 at the first contact 231 a. The contact point of the first heating body 231 is only one place of the first contact point 231a.

  The second heating body 232 is electrically connected to a high-frequency circuit (not shown) and the first and third to fifth heating bodies 231, 233, 234, and 235 at the second contact point 232a. The third heating body 233 is electrically connected to a high-frequency circuit (not shown) and the first, second, fourth, and fifth heating bodies 231, 232, 234, and 235 at the third contact point 233a. The fourth heating body 234 is electrically connected to a high-frequency circuit (not shown) and the first to third and fifth heating bodies 231, 232, 233, and 235 at the fourth contact 234a. The fifth heating body 235 is electrically connected to a high-frequency circuit (not shown) and the first to fourth heating bodies 231, 232, 233, and 234 at the fifth contact 235a.

  According to this modification, even when at least one of the first to fifth heating elements 231, 232, 233, 234, and 235 is damaged due to repeated stress based on the seating operation, the induced current to other than the damaged heating element Can be prevented. Thereby, the heating nonuniformity of a heating toilet seat can be suppressed.

  For example, consider a case where a current of 10 amperes (A) is passed through the starting point of the heating conductor 230 having five turns. At this time, if a part of the first heating body 231 is broken, the high-frequency current does not flow to the heating conductor 230 if the heating conductor 230 is a so-called “spiral” installation configuration. Therefore, the heating conductor 230 does not generate heat.

  On the other hand, in the case of the installation form of the present modification, even if a part of the first heating body 231 is damaged, a total current of 8A is generated by the second to fifth heating bodies 232, 233, 234, 235 flows. Therefore, the heating conductor 230 generates heat in the second to fifth heating bodies 232, 233, 234, and 235. That is, according to this modification, even if a part of the heating conductor 230 is damaged, the function of the heated toilet seat (function of raising the temperature of the toilet seat 200) can be ensured.

Next, a modification of the heating conductor of the present embodiment will be described with reference to the drawings.
FIG. 8 is a schematic perspective view showing a modification of the heating conductor according to the present embodiment.
FIG. 8A is a schematic perspective view illustrating a gold scoop 230a as a modification of the heating conductor. FIG. 8B is a schematic perspective view illustrating an aluminum curl scrubber 230b as a modification of the heating conductor.

  In the heating toilet seat device 100 described above with reference to FIGS. 1 to 7, the case where the heating conductor 230 is, for example, a stainless metal thread has been described as an example. The heating conductor 230 of the present embodiment is not limited to this, and may be a gold scoop 230a shown in FIG. 8A or an aluminum curl scrub 230b shown in FIG. 8B.

  That is, the gold scoop 230a shown in FIG. 8A has a structure in which a plurality of thread-like metal wires are bundled, and has a stretchability as a whole structure. On the other hand, the aluminum curl scourer 230b shown in FIG. 8B has a structure in which a plurality of spring-like metal wires are bundled, and the structure as a whole has elasticity.

  The heating conductor of the present embodiment, such as the stainless steel metal thread 230a shown in FIG. 8A and the aluminum curl 230b shown in FIG. 230 includes an aggregate in which metal is formed in a fiber shape, and has elasticity as a whole structure. According to this, even if the thermal contraction rate of the base material part 210 is different from the thermal contraction rate of the heating conductor 230, the heating conductor 230 is not affected by the temperature change during use of the heating toilet seat device 100. It can follow changes in heat shrinkage.

  Thereby, the position of the heating conductor 230 can be more reliably fixed, and the metal body 240 can be more reliably fixed. Therefore, the influence at the time of use of the heating toilet seat apparatus 100 (For example, the influence of the fall of the adhesive force by the temperature change at the time of use of the heating toilet seat apparatus 100) can be suppressed. Further, the distance between the adjacent heating conductors 230 can be kept substantially constant. Thereby, the amount of the entire leakage magnetic field of the heating toilet seat device 100 can be minimized.

Next, a modified example of the toilet seat of this embodiment will be described with reference to the drawings.
FIG. 9 is a schematic cross-sectional view illustrating a modified example of the toilet seat according to the present embodiment.
FIG. 9 corresponds to a schematic cross-sectional view taken along line AA shown in FIG.
Compared with the toilet seat 200 described above with reference to FIGS. 1 to 5, the toilet seat 200 c of this modification further includes a metal body 240 and an adhesive layer 250.

  The metal body 240 is provided between the base material part 210 and the surface layer part 220. As the metal body 240, for example, a nonmagnetic material such as aluminum or copper is used. The metal body 240 suppresses the magnetic field from being released to the outside.

  The adhesive layer 250 is provided between the metal body 240 and the base material part 210. The metal body 240 is bonded and fixed to the upper surface of the base member 210 by the adhesive layer 250. The adhesive layer 250 may be provided in advance on the surface (lower surface) where the metal body 240 is in contact with the base material part 210. The thickness (vertical thickness) of the adhesive layer 250 is, for example, about 44 ± 3 micrometers (μm). As the adhesive layer 250, an acrylic adhesive is used. For example, as the adhesive layer 250, ThreeBond 3955 manufactured by Three Bond Co., or Scotch-Weld (registered trademark) EPX (registered trademark) two-component room temperature curable adhesive manufactured by 3M is used.

  As shown in FIG. 3, the metal body 240 has a gap 241. The gap 241 is, for example, a hole that penetrates the metal body 240. The elastomer forming the surface layer portion 220 enters the void portion 241 of the metal body 240 at the time of injection molding (injection molding), for example. The elastomer that has entered the gap portion 241 of the metal body 240 reaches the base material portion 210 and comes into direct contact with the base material portion 210. In the present embodiment, a plurality of gaps 241 are provided and separated from each other. The gap portion 241 will be described in detail in the method for manufacturing the heating toilet seat device according to the present embodiment described later.

According to the present modification, a magnetic heating conductor 230 that raises the temperature of the toilet seat 200 and a nonmagnetic metal body 240 that suppresses the release of a magnetic field to the outside are provided. Therefore, it is possible to achieve both improvement in temperature rise performance and suppression of leakage magnetic field.
In addition, since the metal body 240 has the gap portion 241, it is possible to secure a surface region in which the resin material of the base material portion 210 directly contacts the resin material of the surface layer portion 220 during molding by heat. A metal body 240 that suppresses the emission of the magnetic field to the outside is provided on the heating conductor 230 that is affected by the magnetic field. Therefore, the amount of leakage magnetic field can be minimized.

  Note that the diameter of the gap 241 of the metal body 240 is sufficiently larger than the diameter of the opening through which electromagnetic waves cannot pass, considering the frequency of the high-frequency current that is passed through the induction heating coil 260 (for example, about 100 kilohertz (kHz)). small.

  Moreover, since the adhesive layer 250 is provided between the metal body 240 and the base material part 210, the relative position between the metal body 240 and the base material part 210 varies depending on the use state of the heating toilet seat device 100. (For example, peeling) can be suppressed. Therefore, it is possible to suppress a change in the distance between the metal body 240 and the base material portion 210 and to keep the leakage magnetic field substantially constant. Further, the distance between adjacent heating conductors 230 can be kept substantially constant. That is, it can suppress that the adjacent heating conductor 230 approaches and leaves | separates mutually when the heating toilet seat apparatus 100 is used. Therefore, the amount of the leakage magnetic field in the entire seating surface of the toilet seat 200 can be made substantially constant. Thereby, the bias | inclination of a leakage magnetic field can be suppressed and the amount of the leakage magnetic field of the heating toilet seat apparatus 100 whole can be suppressed to the minimum.

  Polypropylene is generally used as a material for the toilet seat 200. Therefore, when the material of the base material part 210 and the material of the surface layer part 220 include polypropylene, the characteristics of the toilet seat 200 can be maintained, and the temperature of the toilet seat at the time of sitting can be set to a comfortable temperature in a shorter time.

Next, the manufacturing method of the heating toilet seat apparatus concerning this embodiment is demonstrated, referring drawings.
FIG. 10 is a flowchart illustrating the method for manufacturing the heating toilet seat device according to this embodiment.
In FIG. 10, the manufacturing method of the heating toilet seat apparatus 100 provided with the toilet seat 200c mentioned above regarding FIG. 9 is mentioned as an example, and is demonstrated.

First, the base material part 210 which has the recessed part 211 is formed by injection molding (step S101). The material of the base material part 210 is a resin material such as polypropylene (PP).
Subsequently, the heating conductor 230 is fixed to the recess 211 of the base material part 210 (step S103). The heating conductor 230 is, for example, the stainless steel metal thread described above with reference to FIGS. 1 to 7, the gold scoop 230a illustrated in FIG. 8A, and the aluminum curl scrub 230b illustrated in FIG. 8B. . That is, the heating conductor 230 includes an aggregate in which metals are formed in a fiber shape, and has elasticity as a whole structure.

Subsequently, the adhesive layer 250 is formed on the upper surface of the base material part 210 (step S105). Alternatively, the adhesive layer 250 is formed on the contact surface of the metal body 240 with the base material part 210 (step S105). As the adhesive layer 250, an acrylic adhesive is used.
Subsequently, the metal body 240 is bonded and fixed to the upper surface of the base member part 210 through the adhesive layer 250 (step S107). As the metal body 240, for example, a nonmagnetic material such as aluminum or copper is used.

  Subsequently, the surface layer portion 220 is formed by injection molding (step S109). The material of the surface layer part 220 is a resin material having shape followability. Examples of the material of the surface layer portion 220 include an elastomer containing a resin component such as polypropylene and a rubber component.

  Here, the thermal contraction rate of the resin is substantially constant, whereas the thermal contraction rate of the metal is very small as compared with the thermal contraction rate of the resin. That is, the thermal contraction rate of the base material part 210 is different from the thermal contraction rate of the heating conductor 230. Therefore, when the surface layer portion 220 is formed by injection molding, the heating conductor 230 may not be able to follow the change in thermal contraction of the base material portion 210 due to a temperature change before and after the injection molding. As a result, sink marks or warpage may occur in at least one of the base material portion 210 and the surface layer portion 220, and the surface smoothness and the external dimensions targeted for the design may not be ensured.

  On the other hand, the heating conductor 230 of the present embodiment includes an aggregate in which metal is formed in a fiber shape, and has elasticity as a whole structure. Thereby, even if the thermal contraction rate of the base material part 210 is different from the thermal contraction rate of the heating conductor 230, the heating conductor 230 causes the thermal contraction of the base material part 210 due to the temperature change before and after the injection molding of the surface layer part 220. Can follow the changes in Therefore, it is possible to suppress the occurrence of sink marks and warpage in the base material part 210 and the surface layer part 220, and to ensure the surface smoothness and the external dimensions that are the design targets.

  As described above with reference to FIG. 3, the metal body 240 has the gap portion 241. The elastomer that forms the surface layer portion 220 enters the void portion 241 of the metal body 240 during injection molding. The elastomer that has entered the gap portion 241 of the metal body 240 reaches the base material portion 210 and contacts the base material portion 210. Then, since at least a part of material (resin: PP) in the surface layer part 220 is the same as at least a part of material (resin: PP) in the base part 210, the elastomer that has reached the base part 210. Is more strongly bonded or bonded to the resin material forming the base material portion 210.

According to this, it can suppress that the base material part 210 deform | transforms by the heat shrink at the time of injection molding, or peels from the surface layer part 220. FIG.
The surface layer 220 may be formed by a film laminating method. In this case, as the surface layer portion 220, for example, polyethylene terephthalate (PET) or polypropylene is used.

The embodiment of the present invention has been described above. However, the present invention is not limited to these descriptions. As long as the features of the present invention are provided, those skilled in the art appropriately modified the design of the above-described embodiments are also included in the scope of the present invention. For example, the shape, dimensions, material, arrangement, etc. of each element included in the heating toilet seat device 100 and the toilet seat 200 and the installation form of the heating conductor 230 and the metal body 240 are not limited to those illustrated, but can be changed as appropriate. can do.
Moreover, each element with which each embodiment mentioned above is provided can be combined as long as technically possible, and the combination of these is also included in the scope of the present invention as long as it includes the features of the present invention.

  10 Toilet device, 100 Heating toilet seat device, 200, 200a, 200b, 200c Toilet seat, 210 Base material part, 211 Recessed part, 213a, 213b Convex part, 220 Surface layer part, 221 Seating surface, 230 Heating conductor, 230a 230b aluminum curl, 231 first heating element, 231a first contact, 232 second heating element, 232a second contact, 233 third heating element, 233a third contact, 234 fourth heating element , 234a fourth contact, 235 fifth heating body, 235a fifth contact, 240 metal body, 241 gap, 250 adhesive layer, 260 induction heating coil, 300 toilet lid, 400 casing, 501 magnetic field, 503 eddy current 800 Western style toilet

Claims (5)

A heating toilet seat device capable of raising the temperature of the toilet seat by induction heating,
A base material portion formed of resin;
A heating conductor provided on the base member in a certain region including a seating surface of the toilet seat and induction-heated by a magnetic field;
A surface layer portion provided on the heating conductor and forming a seating surface of the toilet seat;
With
The heating toilet seat device according to claim 1, wherein the heating conductor includes an assembly in which metal is formed in a fiber shape and has elasticity as a whole structure.   The heating toilet seat device according to claim 1, wherein the heating conductor is formed of a single wire or a stranded wire and has a thread shape or a spring shape.   The heating toilet seat device according to claim 2, wherein the heating conductor is formed in a single thread shape or a spring shape. The base portion is
A recess for fixing the heating conductor;
A convex portion provided on an upper side surface of the concave portion and hooking the heating conductor;
The heating toilet seat device according to claim 2, wherein the heating toilet seat device is provided. A method for manufacturing a heated toilet seat device capable of raising the temperature of a toilet seat by induction heating,
Form the base material part with resin,
A heating conductor that is induction-heated by a magnetic field, the heating conductor having an elastic structure as a whole including an assembly in which a metal is formed in a fiber shape, and the base material portion in a certain region including a seating surface of the toilet seat Fixed on top
A method for manufacturing a heating toilet seat device, comprising forming a surface layer portion forming a seating surface of the toilet seat on the heating conductor.