JP4775275B2 - Heating toilet seat and toilet device equipped with it - Google Patents

Description

  The present invention relates to a toilet seat having a heating function, and more particularly, to a heated toilet seat capable of raising the temperature to an optimum temperature in a short time until a user is seated and a toilet apparatus equipped with the same.

In this type of conventional heated toilet seat, as shown in FIG. 12, the heating means 2 is disposed on the back surface of the metal toilet seat 1, and the toilet seat is heated to a predetermined temperature in a short time to save energy. (For example, refer to Patent Document 1). In other words, in this type of heated toilet seat, the heating means 2 has to be brought to a proper temperature quickly in a short period of time until it is energized and seated immediately before the user sits on the toilet seat to save power. Toilet seat 1 is used. Therefore, with a heated toilet seat that puts the buttocks directly and raises the temperature in a short time, if any abnormal situation occurs, it will immediately exceed the appropriate temperature and become hot, causing discomfort to the user and even exceeding the discomfort. If the temperature rises, the user may have to get up from the toilet seat.
JP 2003-79539 A

  However, in the conventional configuration, there is no description about the safety against an excessive temperature due to a failure or the like, and there is a problem that the safety is jeopardized by the excessive temperature.

  It is an object of the present invention to provide a heated toilet seat that can be used safely and comfortably by making it possible to quickly detect an excessive temperature rise in the toilet seat even when the temperature control of the toilet seat becomes impossible due to some abnormality. .

  In order to solve the conventional problems, the heating toilet seat of the present invention has a configuration in which a dense region portion is provided in the arrangement pattern of the linear heating elements, and a temperature-responsive safety device is provided in the dense region portion. With this configuration, the response speed of the safety device can be further increased.

  The heated toilet seat of the present invention can quickly detect an overtemperature caused by some abnormality by increasing the temperature response speed of the safety device. Therefore, the heated toilet seat can be used safely and comfortably.

1st invention detects the temperature of the said seating surface which the toilet seat which formed at least one part of the seating surface which a body contacts at the time of sitting with metal, the linear heating element arrange | positioned in the back side inner surface of the said seating surface, and An arrangement pattern of the linear heating element, comprising: a temperature detection sensor; a control unit that controls an energization amount to the linear heating element; and a temperature-responsive safety device that prevents an overtemperature of the seating surface. Has a disposition pitch portion provided in a range corresponding to a seating surface with which a user's body seated mainly contacts, and a dense region portion having a narrower pitch than the disposition pitch portion of the range , The dense region portion is arranged outside the range and in a range where the user's body seated is difficult to contact, and the safety device is provided in the dense region portion. Thereby, since the amount of heat per unit area generated in the dense region can be increased as compared with other portions, the temperature response speed of the safety device can be increased. In addition, since the location of the dense area is a portion that is difficult for the body to contact when the user is seated, the influence of heat conduction on the user's body can be reduced. Temperature can be detected. Therefore, an overtemperature caused by some abnormality can be detected safely and promptly, and the heated toilet seat can be used safely. The safety device may be attached in contact with the dense region of the linear heating element. Still further, the linear heating element is sandwiched between two metal foils and disposed on the inner surface on the back side of the seating surface, and the safety device is brought into contact with the metal foil in the dense region portion. It may be attached.

A second invention is, in particular in the first invention, by your Keru disposition pitch in the dense region of the linear heating element was 1.5 mm to 2.5 mm, the linear heating element itself thermal shock Therefore, the linear heating element can be safely used within the operating temperature range (within the heat resistance temperature). In addition, hot spots are not generated on the seating surface facing the dense area, and it is possible to prevent discomfort during sitting.

In the third invention, particularly in the first or second invention, a plurality of safety devices are provided, a plurality of dense region portions in the linear heating element are formed, and the safety devices are provided in each of the dense region portions. With this configuration, even when an abnormality such as a failure of the safety device occurs, it can be backed up by another safety device, and the safety and reliability of the heating toilet seat can be improved.

According to a fourth aspect of the invention, particularly in the third aspect of the present invention, the plurality of safety devices have different off-operation temperatures.
At least two types of safety devices were provided. By using safety devices with different off-operation temperatures in this way, it becomes possible to ensure safety at two stages of temperature. For example, the first stage is operated at a temperature close to the normal use state, and the second stage is More reliable safety can be ensured by operating at a temperature at which the user does not burn, smoke or a temperature that does not ignite .

In the fifth aspect of the invention, in particular, in the fourth aspect of the invention, at least the safety device having the lowest off operation temperature is the return type, and at least the safety device having the highest off operation temperature is the non-return type. As a result, when a safety device with a low off-operating temperature is activated, the linear heating element can be turned on and off repeatedly, so that the temperature of the seating part can be raised in a state where the temperature difference is larger than usual, which is somewhat comfortable. However, in the case of an emergency, it is possible to use a heated toilet seat, and if a safety device with a high off-operation temperature is activated, the safety device will not return, making it impossible to use the heated toilet seat. Sex can be secured .

  In a sixth aspect of the present invention, in particular, in any one of the first to fifth aspects, the safety device is provided in the dense region portion through the heat conductive paste. As a result, most of the amount of heat generated in the dense region moves to the safety device, so that the response speed of the safety device is increased. Therefore, the user can use the quick heating toilet seat safely. Moreover, it is possible to prevent a hot spot from occurring on the toilet seat seating surface facing the dense region. Therefore, the user can use the heated toilet seat comfortably.

  In the seventh invention, in particular, in any one of the first to sixth inventions, the thickness of the metal forming the seating portion is set to 0.8 to 1.2 mm. As a result, the heat capacity can be reduced while ensuring the strength required for the toilet seat, and it is possible to satisfy both the strength and the heating rate. Therefore, the user can use the heated toilet seat comfortably.

  An eighth aspect of the invention is the heating toilet seat according to any one of the first to seventh aspects, a nozzle device for injecting cleaning water toward a user's local area, and a cleaning water supply device for supplying cleaning water to the nozzle device With this configuration, it is possible to detect an abnormal overheating in the toilet seat with a safety device with a fast response speed, and to provide a safe and comfortable toilet device.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a schematic configuration diagram of a heating toilet seat according to the first embodiment of the present invention, FIG. 2 is a perspective view of a toilet apparatus equipped with a heating toilet seat, and FIG. 3 is a heating element unit composed of a linear heating element. FIG. 4 is a sectional view of the seating surface.

  1 to 4, a toilet device main body 21 is attached to the upper surface of a toilet 20, and a toilet seat 22 and a toilet lid 23 are rotatably provided on the front surface of the main body 21. Further, in the main body 21, a nozzle device 50 for advancing and retreating into the toilet from the lower front of the main body 21 to inject cleaning water toward the user's local area, and a cleaning water supply device for supplying warm water to the nozzle device (not shown) Hot water washing function, a drying device (not shown) for drying the wet local area after washing, and a deodorizing device (not shown) for deodorizing odor during defecation. Further, a human body detection sensor 24 for detecting the presence or absence of a human body in the toilet space by infrared rays is provided on the sleeve portion of the main body 21. The toilet seat 22 includes a toilet seat base 25 made of a synthetic resin and a metal seating surface 26 made of aluminum, and is formed by joining two members at their inner and outer peripheral edges.

  A heating element unit 27 is disposed on the back surface of the seating surface 26. This heating element unit 27 is arranged so that a single-wire linear heating element 30 (diameter approximately 0.34 mm) in which the outer surface of the heater wire 28 (diameter approximately 0.18 mm) is covered with a fluororesin 29 is accommodated in the toilet seat shape. The upper and lower surfaces of the linear heating element 30 are bonded with two aluminum foils 31.

  The material used for the heater wire 28 is a low resistivity alloy material containing 4% of silver in copper, and the volume resistivity is about 0.017 μΩ · m. Generally, nickel chrome alloy used as a heater wire is about 1.08 μΩ · m, and iron chrome alloy is about 1.42 μΩ · m. Compared to these, the volume resistivity is about 1/100, which is very low. Is. This alloy material is generally a highly conductive material used as a lead wire or coil material of an electric appliance. By using this material, the thickness of the linear heating element 30 can be reduced, so that the formability of the linear heating element 30 into various shapes is improved, thereby improving processing accuracy and facilitating processing. In addition, since the adhesiveness to the aluminum foil 31 is improved by reducing the wire diameter, the heat of the linear heating element 30 can be efficiently transmitted to the aluminum foil and the seating surface 26. is there. The total length of the linear heating element 30 is about 10 m, the resistance value is about 8.1Ω, and the power capacity is about 1200 W when used with a 100 V power source.

  As shown in FIG. 3, the heating element unit 27 is substantially similar to the seating surface 26 of the toilet seat 22, and a single-wire linear heating element 30 is arranged on a substantially entire surface of the heating unit 27 in a predetermined arrangement pattern. It is. In the arrangement pattern, the linear heating elements 30 are arranged at a predetermined wide arrangement pitch in a portion corresponding to the range of the seating surface 26 where the body of the seated user mainly comes into contact with the heating area 42. Forming. In this Embodiment, the arrangement | positioning pitch of the heating area | region 42 shall be 7 mm-10 mm. Further, a dense region portion 37 in which the linear heating elements 30 are densely arranged at an arrangement pitch of 1.5 mm to 2.5 mm narrower than the arrangement pitch of the heating region 42 is formed in the vicinity of the outer portion behind the heat generating unit 27. is doing. Details of the dense area 37 will be described later.

  Instead of the aluminum foil 31, a metal foil having good heat conduction such as a copper foil may be used. The linear heating element 30 is ensured of insulation and heat resistance by the fluororesin 29. Here, silicon rubber may be used in place of the fluororesin 29, and even if other materials are used, there is no problem as long as insulation and heat resistance can be secured. The degree of insulation and heat resistance varies depending on the required performance of the heated toilet seat.

On the back side of the seating surface 26, an alumite layer 32 is formed by alumite treatment to further improve the insulation performance. Instead of forming the alumite layer 32, there is no problem even if a method of attaching a film of polyimide, PET or the like to improve the insulation performance is not a problem. Thus, a heating toilet seat can be used safely and safely by providing a double insulating layer. A surface decorative layer 33 painted for the appearance effect is formed on the surface of the aluminum serving as the seating surface 26.

  Further, the surface decorative layer 33 applied to the outer surface of the seating surface 26 can be dyed. However, if at least the outer surface of the seating surface 26 is coated, not only the anticorrosive effect but also a metal toilet seat such as aluminum can be used. However, it is possible to wipe off the cold feeling as seen, and for example, it is possible to produce a soft image or a high-class image by pearl coating such as pearls. Since a metal and aluminum press (drawing) product is used for the seating surface 26 of the toilet seat 22, the thermal conductivity is as high as about 200 W / (m · K). Heat can be transferred to the outer surface, that is, the surface decorative layer 33. And since it is aluminum with high heat conductivity, the soaking | uniform-heating effect which makes temperature distribution more uniform is acquired. Further, the required strength can be ensured even if the plate thickness is reduced by work hardening by pressing (drawing) aluminum. For example, in the case of resin, a thickness of about 3 mm is required from the viewpoint of strength, but in the case of a drawn product of an aluminum plate, half of 1.5 mm or less is sufficient. As the thickness is reduced, the heat capacity can be reduced, so that the amount of heat and time required for temperature increase can be reduced. As a result of the experiment, it was concluded that the aluminum plate thickness is preferably 0.8 to 1.2 mm in terms of strength and heating time.

  Further, a thermistor 34 as a temperature detection sensor is attached to the back surface of the seating surface 26 in order to detect the temperature of the seating surface 26. Signals from the thermistor 34 are transmitted to the control unit 35, and based on these signals, the energization to the linear heating element 30 is controlled so that the temperature of the seating surface 26 as a warming surface becomes a predetermined temperature. It has become. When detecting that a person has entered the toilet, the human body detection sensor 24 starts heating the seating surface 26 and transmits a signal to the control unit 35 so as to open the toilet lid 23. In addition, a seating detection sensor 36 that detects the seating on the toilet seat 22 by infrared rays is provided at the center of the main body 21. For example, in a heated toilet seat having a hot water cleaning function, the cleaning function operates only when a seating of a person is detected.

  With the above-described configuration, when the user enters the toilet, the human body detection sensor 24 detects the entry, the signal is sent to the control unit 35, and the control unit 35 starts energizing the linear heating element 30. To do. Based on the temperature signal of the thermistor 34 immediately before the start of energization, the control unit 35 performs an operation so that the seating surface 26 of the toilet seat 22 has an appropriate temperature, and controls the energization of the linear heating element 30.

  Here, when the plate thickness of aluminum is 1.0 mm and 1200 W is applied to the linear heating element 30, the heating rate of the seating surface 26 is about 2.5 K / s. Also, as a result of the survey, the average time required for the user to sit after opening the toilet door is 10 seconds, and if the temperature of the seating surface 26 is 29 ° C. or higher, the user feels cold and uncomfortable. No results were obtained. In other words, even if the temperature of the toilet in the winter season is 5 ° C., if the temperature of the toilet seat is raised at the same time as entering the room, the temperature of the seating surface 26 becomes 30 ° C. 10 seconds after entering the room. The temperature can be raised to a temperature that does not feel cold. By using aluminum having good heat conduction for the seating surface 26, it is possible to heat the user in a short time until the user is seated on the toilet seat 22, and therefore, when the user is not entering the room, the linear shape is obtained. There is no need to energize the heating element 30, so that energy is saved and the seating surface 26 can be heated uniformly, so that it can be used comfortably. In addition, when seated, the seating surface 26 is heated to a temperature at which it does not cool, so that it can be used comfortably without feeling cold. It is also possible to use stainless steel for the seating surface 26 instead of aluminum. Since stainless steel is stronger than aluminum, the thickness of stainless steel can be reduced, so the heat capacity can be reduced and the heating time can be shortened. be able to.

  Next, when the user is seated on the toilet seat 22, the energization amount to the linear heating element 30 is reduced to zero or the temperature of the seating surface 26 does not rise excessively by the signal of the seating detection sensor 36 so that the temperature becomes appropriate. The temperature of the seating surface 26 is kept warm. Thus, it can be used comfortably because it is kept at an appropriate temperature while sitting.

  Since the heated toilet seat is seated with the skin directly in contact with the seating surface 26, sufficient consideration is required for safety. In a normal use state, it can be used safely and comfortably as described above, but in the unlikely event that a malfunction occurs in the control unit 35 such as a microcomputer (not shown) due to some abnormality, the energization control to the linear heating element 30 is performed. When it becomes impossible to do so, it is necessary to ensure that the safety device operates as soon as possible. In the present embodiment, a dense region portion 37 is provided in the arrangement pattern of the linear heating elements 30, and a thermostat 38 is attached to the dense region portion 37. Therefore, since the temperature response speed of the thermostat 38 can be increased, the energization circuit of the linear heating element 30 can be shut off earlier before the temperature of the seating surface 26 rises to a dangerous state at the time of abnormality. Can be used safely.

  Hereinafter, the above-described contents will be described in detail. FIG. 5 is a result of measuring the detected temperature of the thermostat 38 and the surface temperature of the seating surface 26 when the linear heating element 30 is energized on the assumption that the control unit 35 has failed. In FIG. 5, curves (A) and (A ′) are the surface temperature of the seating surface 26, and curves (B) and (B ′) are the detected temperatures of the thermostat 38. When energization of the linear heating element 30 is started, the surface temperature of the seating surface 26 reaches the toilet seat maximum set temperature (T1) at time t1. Normally, when (T1) is reached, energization is stopped by a command from the control unit 35. However, if any abnormality occurs, the energization is continued as it is. When the OFF operation temperature of the thermostat 38 is set to (T3), the surface temperature of the seating surface 26 is equal to or higher than the toilet seat maximum set temperature (T1), and it can be reliably determined that the temperature is abnormally high (T2). At this time, the thermostat 38 operates to cut off the energization to the linear heating element 30. At this time, the overheating continues for (t2-t1) seconds. Here, it is very difficult to set the OFF operation temperature of the thermostat 38 to the crossing 0 in consideration of manufacturing and cost, and the tolerance is generally ± 2 ° C. That is, when the tolerance is taken into consideration, the OFF operating temperature of the thermostat 38 is (T3) to (T3 + 4). If the OFF operating temperature is (T3 + 4), the curves of the temperature of the seating surface 26 and the detected temperature of the thermostat 38 are (A ′) and (B ′), and the thermostat 38 operates at time t3 and the circuit is shut off. . In this case, the overheating is continued for (t3-t1) seconds. That is, when the variation in the OFF operation temperature of the thermostat 38 is taken into consideration, the time for overheating is the shortest (t2-t1) seconds and the longest is (t3-t1) seconds. In consideration of safety, the circuit must be shut off as quickly as possible when the temperature rises excessively. Therefore, by increasing the slope of the curve (B), that is, by increasing the temperature response speed of the thermostat 38, the time (t3-t1) can be shortened, and before the temperature of the seating surface 26 increases excessively. In addition, the energization circuit to the linear heating element 30 can be cut off, and it can be used safely and safely even in the event of an emergency.

  In this way, by minimizing heat loss when receiving heat from the dense region portion to the thermostat 38 and increasing the temperature increase rate, it is possible to quickly reach the OFF operation temperature and sufficiently reliably increase the response speed. . In addition, a configuration may be adopted in which the temperature rise gradient is detected by detecting the heat receiving temperature in this manner, and the energization interruption to the linear heating element 30 is performed at an early timing.

  Further, as shown in FIG. 6, a linear heating element 30 having a spiral shape is disposed so that the attachment portion of the thermostat 38 faces the temperature sensing surface, and the circular temperature sensing portion of the thermostat 38 (FIG. The heat generated in the dense region 37 is efficiently transferred to the thermostat 38 by providing the dense region portion 37 with substantially the same shape as that (not shown). No hot spots are generated, and it is possible to prevent discomfort when sitting.

  If the temperature sensing part of the thermostat 38 is a square, the rectangular dense region part 37 may be formed by meandering the linear heating element 30 as shown in FIG. 7, for example.

  Further, as shown in FIG. 8, heat generated in the dense region 37 is efficiently transmitted to the thermostat 38 by applying the heat conductive paste 39 to the dense region 37 of the linear heating element 30 and attaching the thermostat 38. Therefore, the response speed of the thermostat 38 can be increased, and the excessive heating of the linear heating element 30 itself can be prevented. In addition, the amount of heat flowing toward the seating surface 26 is reduced, and the temperature of the seating surface 26 facing the dense region 37 can be prevented from becoming higher than the ambient temperature. Therefore, a heated toilet seat that can be used safely and comfortably for the user can be provided.

  The heat conductive paste 39 is obtained by blending a base oil such as silicon oil with a powder having high heat conductivity, and inorganic powders and various metal powders are generally used. Examples thereof include silica and silver. , Copper, aluminum, alumina, boron nitride, aluminum nitride, and the like. In particular, aluminum nitride is a material having high thermal conductivity and low conductivity, and is technically optimal. In general, the heat conductive paste is selected in consideration of heat resistant temperature, heat conductivity, insulation performance, and cost.

  Here, as the arrangement pitch of the linear heating elements 30 in the dense region portion 37 is narrowed, the amount of heat generated in the dense region portion 37 increases, and the amount of heat transmitted to the thermostat 38 increases, so the response of the thermostat 38. Speed increases. However, if the pitch is too narrow, the response speed of the thermostat 38 is increased, while the temperature of the linear heating element 30 becomes high, and there is a possibility that defects such as defective insulation occur due to damage. Further, a hot spot may occur on the seating surface 26 facing the dense region portion 37. Therefore, in order to satisfy all of the three points of increasing the response speed of the thermostat 38, not giving a thermal shock to the linear heating element 30 itself, and not generating a hot spot on the seating surface 26, the arrangement pitch is 1.5 mm. The conclusion that it is preferable to set to ~ 2.5 mm was obtained by experiment.

  Further, in order to prevent the discomfort felt when sitting because the amount of heat generated in the dense region portion 37 increases and hot spots are generated in the temperature distribution of the seating surface 26, as shown in FIG. By providing a heat insulating material 40 between the dense region portion 37 and the seating surface 26, that is, by making thermal contact with the heater wire through the heating element side insulating layer on the seating surface, the temperature of the opposing seating surface 26 of the dense region portion 37 is increased. It can be prevented that the temperature is higher than the ambient temperature. Therefore, the heating toilet seat which can be used comfortably for a user can be provided.

  In the present embodiment, the thermostat 38 is used as a safety device. However, the safety device is not necessarily the thermostat 38, and a thermal fuse may be used. There is no problem using anything.

  FIG. 10 shows a case where a thermal fuse is used as the safety device. Here, the dense region portion can be formed by arranging the linear heating element 30 around the thermal fuse 41 in a spiral shape. By doing so, the temperature responsiveness of the thermal fuse 41 can be increased, so that an overtemperature caused by some abnormality can be detected quickly, and the heated toilet seat can be used safely. It is desirable to arrange the gaps between the linear heating elements 28 in the dense region with an appropriate gap, since the covering material, the adhesive member for pasting, and the like are not thermally destroyed at the time of heat generation.

(Embodiment 2)
FIG. 11 shows a schematic configuration diagram of a heating element unit composed of a linear heating element in Embodiment 2 of the present invention. The basic configuration of the present embodiment is the same as that of the first embodiment, and the difference is that two dense region portions 37 for attaching the thermostat 38 are provided on both outer portions on the rear side of the heating element unit 27. It is a configuration. The dense region portion 37 includes a reset thermostat (not shown) having an off operation temperature of 46 ° C. and a return operation temperature of 35 ° C., and a non-reset thermostat (not shown) having an off operation temperature of 72 ° C. It is attached.

  Here, two dense region portions 37 are provided, and two types of thermostats 38 having different off-operation temperatures are provided. By using different parts, one of the thermostats 38 may malfunction. Even so, the probability of failure at the same time is reduced. For this reason, even if the control unit 35 malfunctions, the energization to the linear heating element 30 can be reliably cut off, and the heating toilet seat can be used safely and safely.

  In addition, the one having a lower off operation temperature (off operation temperature 46 ° C.) is a return type, and the one having a higher off operation temperature (off operation temperature 72 ° C.) is a non-reset type. In this way, even if an abnormality occurs in the control unit 35 and 1200 W is continuously applied to the linear heating element 30, the off-operation temperature is lower (off-operation temperature 46 ° C.) before danger to the human body. ) Can be cut off, and the heated toilet seat can be used safely and securely.

  Further, when the thermostat 38 having a lower off-operation temperature due to some abnormality (off-operation temperature 46 ° C.) does not operate, the toilet seat may rise to a temperature at which the human body is dangerous, so the off-operation temperature is high. On the other hand, it is possible to cut off the energization with a non-returning thermostat having an off operation temperature of 72 ° C. and not energize thereafter.

  In addition, when stored in a high temperature environment where the environmental temperature reaches about 70 ° C. such as in a warehouse in the summer, the reset thermostat with an off operation temperature of 46 ° C. operates, but the non-reset thermostat with an off operation temperature of 72 ° C. Since the thermostat does not operate, the reset thermostat is restored when it is used in a general household at a room temperature of 35 ° C. or lower. Therefore, even if the thermostat is stored in a high temperature environment, the heated toilet seat can be used.

  In the present embodiment, a reset thermostat having an off operation temperature of 46 ° C. and a return operation temperature of 35 ° C. and a non-reset thermostat having an off operation temperature of 72 ° C. are used. It is necessary to change the setting of the off operation temperature and the return operation temperature according to the climate.

  In addition, although the dense region portion 37 is provided at two locations, the dense region portion 37 does not need to be provided at two locations. The more the dense region portion 37 is provided, the more abnormal the controller 35 becomes. Sometimes the risk of the thermostat 38 not working is reduced. The number of the dense region portion 37 and the thermostat 38 provided depends on the required performance and cost of the heating toilet seat. In this case, the thermostat off-operation temperature is not necessarily limited to two types, and may be set individually. However, at least the thermostat with the highest off-operation temperature is set to the non-reset type and the thermostat with the lowest off-temperature is the lowest. By adopting a return type, the same effects as described above can be obtained.

  As in the first embodiment, a thermal fuse may be used as a safety device instead of the thermostat. A thermostat and a thermal fuse may be used in combination. When a thermostat and a thermal fuse are used in combination, it is optimal to use a reset type thermostat and replace the portion using the non-reset type in this embodiment with a thermal fuse.

  In particular, when a thermostat and a thermal fuse are used in combination, the thermostat may be installed in a dense region, and the thermal fuse may be installed by the method described in the first embodiment. The thermal fuse is surrounded by applying a measure such as directly or in the insulation tube, and the thermal fuse that has been insulated and waterproofed is placed on the lower surface of the heating area of the heating element unit with adhesive tape or the like. It is also possible.

  As described above, the heating toilet seat of the present invention can quickly detect a temperature change by attaching a safety device to a portion where the linear heating elements are densely arranged, and a heating toilet seat that can be used safely is obtained. The present invention can be applied as a heating technique for a device on which a user is seated.

Schematic configuration diagram of a heating toilet seat in the first embodiment of the present invention The perspective view of the heating toilet seat in the embodiment Schematic configuration diagram of a heating element unit comprising a linear heating element in the same embodiment Sectional view of the seating surface in the same embodiment Temperature rise characteristic diagram of heating toilet seat in the same embodiment Schematic diagram of dense region in the same embodiment Schematic diagram of dense region in the same embodiment Sectional drawing of the seating surface in the heating toilet seat in the embodiment Sectional drawing of the seating surface in the heating toilet seat in the embodiment The figure explaining other embodiment of this invention Schematic configuration diagram of a heating element unit comprising a linear heating element in the second embodiment Sectional view of the main part of a conventional heated toilet seat

Explanation of symbols

22 Toilet seat 26 Seating surface 30 Linear heating element 34 Thermistor (temperature detection sensor)
35 Control part 37 Dense area part 38 Thermostat (safety device)
39 Thermal conductive paste 50 Nozzle device

Claims (10)

A toilet seat formed of metal at least a part of a seating surface that the body contacts when sitting;
A linear heating element disposed on the inner surface of the back side of the seating surface;
A temperature detection sensor for detecting the temperature of the seating surface;
A control unit for controlling the amount of energization to the linear heating element;
A temperature-responsive safety device that prevents the seating surface from overheating,
The arrangement pattern of the linear heating elements is an arrangement pitch portion provided in a range corresponding to a seating surface on which a user's body seated mainly comes in contact;
A dense region portion having a narrower pitch than the arrangement pitch portion of the range ,
The dense area is placed outside the range and in a range where the user's body seated is difficult to contact ,
A heating toilet seat, wherein the safety device is provided in the dense region. The heating toilet seat according to claim 1, wherein the safety device is attached in contact with the dense region of the linear heating element . The linear heating element is sandwiched between two metal foils and disposed on the inner surface on the back side of the seating surface, and the safety device is attached in contact with the metal foil in the dense region portion. Item 2. A heated toilet seat according to item 1. Heating seat according to any one of 3 Great Keru disposition pitch in the dense region of the linear heating element of claims 1 was 1.5 mm to 2.5 mm. A plurality of said safety device, and the dense region portion in the linear heating element to form a plurality, any one of the dense area portion respectively from claim 1 where the structure providing the safety device 4 of the Heated toilet seat as described in The heating toilet seat according to claim 5 , wherein the plurality of safety devices are provided with at least two types of safety devices having different setting of the off-operation temperature. The heating toilet seat according to claim 6 , wherein at least a safety device having the lowest off operation temperature is a return type, and at least a safety device having the highest off operation temperature is a non-return type. The heating toilet seat according to any one of claims 1 to 7 , wherein a safety device is provided in the dense region through a heat conductive paste. The heating toilet seat according to any one of claims 1 to 8 , wherein a thickness of a metal forming the seating surface is 0.8 mm to 1.2 mm. A toilet comprising the heating toilet seat according to any one of claims 1 to 9 , a nozzle device that injects cleaning water toward a user's local area, and a cleaning water supply device that supplies cleaning water to the nozzle device. apparatus.

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