JP2010051781A - Sanitary washing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a comfortable sanitary washing device on which a user can easily seat at a best position, which prevents his or her buttocks from contacting directly with a position except a toilet seat, and which can surely detect seating without spoiling its cleanness. <P>SOLUTION: The sanitary washing device includes a body 200 and the toilet seat 300. The body 200 is mounted on a toilet bowl 700, and includes a washing mechanism. A heating section is provided in the toilet seat 300 and supported on the body 200 in a rotational modus. In addition, an oval-shaped annular seat surface 311, and a back 312 connected to the rear part of the seat surface 311, having a bending section and extending inclined upwards are provided in the toilet seat 300. The back 312 restricts the buttocks of the user from moving backwards, thereby inhibiting the occurrence of contact of the buttocks of the user and the body 200. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a toilet seat structure of a sanitary washing device for washing a local part of a human body.

  FIG. 16 is a perspective view of a toilet equipped with a conventional sanitary washing device, and FIG. 17 is a schematic view of the sanitary washing device in a state where a user is seated. This sanitary washing device has a main body 2, a lid 3, a toilet seat 4, and a seating sensor 10. The main body 2 is installed behind the toilet 1. The main body 2 supports the lid 3 and the toilet seat 4 so as to be rotatable. The toilet seat 4 has a substantially elliptical annular shape, and arm portions 4 a are integrally provided on both sides of the rear portion of the toilet seat 4. The toilet seat 4 is connected to the main body 2 via an arm 4a.

The upper surface of the toilet seat 4 forms a seating surface 4b on which a user sits, and the seating surface 4b is an inclined surface whose inner circumference is lower than the outer circumference in order to accommodate ease of seating and a wide range of body shapes of the user. It has become. In the normal state, the user's buttocks contact with both sides of the seating surface 4b in the range of the substantially horseshoe shape at the rear. A heating part (not shown) for heating the seating surface 4 b is built in the toilet seat 4. Moreover, the recessed part 2a of the substantially similar shape with the outer periphery 4c of the rear part of the toilet seat 4 is formed in the front part of the main-body part 2 (for example, refer patent document 1).
JP 2004-066554 A

  However, depending on how the user sits, the seating position is not fixed, and if the user sits rearward, the user's buttocks are likely to contact the recessed portion 2a of the main body 2. Although the seating surface 4b is heated to a comfortable temperature by being heated by the heating portion, the heating portion is not disposed in the recessed portion 2a of the main body 2, and particularly when the winter is cold, the recessed portion has a cold buttocks. When directly in contact with 2a, there was a problem of feeling very uncomfortable.

  The present invention solves the above-described problem, and provides a comfortable sanitary washing device that can be easily seated at an optimum seating position and that prevents the buttocks from directly contacting a portion other than the seating surface. For the purpose.

  In order to achieve the above-described conventional object, the sanitary washing device of the present invention has a main body portion and a toilet seat. The main body is placed on the toilet and incorporates a cleaning mechanism. The toilet seat has a built-in heating part and is rotatably supported by the main body part. The toilet seat includes an elliptical annular seating surface and a back portion that is provided continuously behind the seating surface and has a curved portion and extends obliquely upward. The back portion restricts the user's buttocks from coming into contact with the main body by restricting movement of the seated user's buttocks rearward.

  Thereby, even when the user does not sit at the optimum seating position or when the user carelessly moves when sitting, the buttocks do not touch the main body carelessly. In addition, since the seating surface and the back portion are continuously formed, it is possible to easily clean the portion in direct contact with the body, and a comfortable and hygienic toilet seat can be obtained.

  The present invention can provide a comfortable and hygienic sanitary washing device.

  1st invention by this invention is a sanitary washing apparatus which has the main-body part which was mounted on the toilet bowl and incorporated the washing | cleaning mechanism, and the toilet seat which contained the heating part and was rotatably supported by the main-body part. The toilet seat is provided with an annular seating surface and a back part of the seating surface. The toilet seat has a curved part and a back part that extends diagonally upward. The back part of the toilet seat is restricted from moving backward. By doing so, it is suppressed that a user's buttocks contact a main-body part. With this structure, even when the user does not sit at the optimum seating position or carelessly moves the body while sitting, the buttocks do not touch the main body portion carelessly. In addition, since the seating surface and the back portion are formed continuously, it is possible to easily clean the portion in direct contact with the body. Therefore, a comfortable and hygienic sanitary washing device can be provided.

  A second invention according to the present invention is the sanitary washing apparatus according to the first invention, wherein the width of the upper edge of the back portion is the same as the width of the outer periphery of the seating surface. With this shape, the back portion faces the entire width of the rear surface of the user's buttocks, and restricts rearward movement within a predetermined height range. For this reason, it is possible to more reliably suppress contact of the collar portion with the main body portion.

  A third invention according to the present invention is the sanitary washing apparatus according to the first or second invention, wherein a non-contact type seating sensor for detecting a seating state on the toilet seat is provided on the surface of the main body. In this configuration, the back portion prevents the user's buttocks and waist from coming into contact with the seating sensor. As a result, even when the user does not sit at the optimum seating position or carelessly moves the body during seating, the buttocks do not touch the seating sensor provided on the surface of the main body. Therefore, it is possible to reliably detect the seating without causing the buttocks or the like to come into contact with the seating sensor and hindering the seating detection. Further, since the seating sensor can be formed on substantially the same surface as the main body, the cleanability of the main body is not impaired.

  A fourth invention according to the present invention is the sanitary washing device according to the third invention, wherein the seating sensor includes a filter, a light emitting unit, and a light receiving unit. The main body has a front curved portion that faces the buttocks or waist of the user when the user is seated. A window hole is provided in the front curved portion. The filter is fitted into the window hole so as to have substantially the same surface as the main body. The light emitting unit projects infrared rays inside the filter, and the light receiving unit receives the infrared rays reflected and reflected by the user. With this configuration, the surface of the filter and the surface of the main body are the same surface, and there are no irregularities that make it difficult to wipe off dirt, water droplets, and the like. Therefore, it is possible to ensure easy cleaning of the main body and the filter and reliable seating detection.

  A fifth invention according to the present invention is the sanitary washing apparatus according to any one of the first to fourth inventions, wherein the seating surface of the toilet seat has an inner peripheral portion having a lower slope than the outer peripheral portion. The height difference between the inner peripheral portion of the seating surface at the rear center of the toilet seat and the upper edge of the back portion is set to be three times or more the height difference between the inner peripheral portion and the outer peripheral portion on the side of the seating surface. With this configuration, the user can relatively easily move left and right while seated, and the back can be reliably restricted from moving backward. Therefore, the toilet seat can be made comfortable and easy to use.

  A sixth invention according to the present invention is the sanitary washing apparatus according to any one of the first to fifth inventions, wherein the seating surface of the toilet seat is formed with a convex curved surface upward and the back portion is formed with a concave curved surface. With this shape, the user can move relatively easily on the seating surface on which the collar portion is placed, and can more reliably regulate the rearward movement of the collar portion.

  A seventh invention according to the present invention is the sanitary washing apparatus according to any one of the first to sixth inventions, wherein the main body portion is disposed only in a range where the elevation angle with respect to the upper edge of the back portion is 45 degrees or less. With this configuration, when the seat is seated with the back of the buttocks pressed strongly against the back, it is possible to more reliably suppress the buttocks that protrude rearward from the upper edge of the back from contacting the main body.

  An eighth invention according to the present invention is the sanitary washing apparatus according to any of the first to seventh inventions, further comprising a human body detection sensor and a control unit. The human body detection sensor detects a human body. A control part starts the temperature rising drive of a heating part with the detection signal of a human body detection sensor. With this configuration, at least the seating surface of the toilet seat is driven to rise in temperature only when a human body is detected. Therefore, energy efficiency becomes high.

  A ninth invention according to the present invention is the sanitary washing apparatus according to any one of the first to eighth inventions, wherein the heating unit is configured to heat the seating surface and the back part. With this configuration, it is possible to heat all the portions with which the buttocks are in direct contact, and a comfortable toilet seat can be realized.

  A tenth invention according to the present invention is the sanitary washing apparatus according to the ninth invention, wherein the toilet seat comprises a lower toilet seat casing and an upper toilet seat casing. The lower toilet seat casing is placed on the toilet bowl, and the upper toilet seat casing is made of a material having a higher thermal conductivity than the lower toilet seat casing, and is combined with the lower toilet seat casing. The upper toilet seat casing has ribs erected from the seating surface and the back portion toward the lower toilet seat casing. And the height of the rib in a back part is lower than the height of the rib in a seating surface. Thus, by reducing the height of the rib in the back portion, the heat radiation area can be reduced, and the power consumption can be reduced.

  An eleventh invention according to the present invention is the sanitary washing device according to the tenth invention, wherein the height of the rib on the seating surface is 5 mm or more and 40 mm or less. Such a height of the rib can cover a range in which the upper toilet seat casing heated by the heating unit touches the user's buttocks while ensuring the strength on the seating surface. Therefore, it becomes possible to heat all the parts with which the buttocks are in direct contact, and a comfortable toilet seat can be realized.

  A twelfth invention according to the present invention is the sanitary washing apparatus according to the tenth or eleventh invention, wherein the upper toilet seat casing protrudes horizontally from the lower toilet seat casing in a state where the toilet seat is placed on the toilet bowl. . With such a configuration, even when an obese user sits on the toilet seat, it is possible to heat all the parts that the buttocks are in direct contact with, thereby realizing a comfortable toilet seat.

  According to a thirteenth aspect of the present invention, in the first to ninth aspects of the present invention, a sanitary washing in which the same configuration as the eleventh aspect is applied when the heating section is configured to selectively warm the upper toilet seat casing. Device. A fourteenth aspect of the present invention is a sanitary washing apparatus according to the thirteenth aspect, to which the same configuration as that of the twelfth aspect is applied. According to a fifteenth aspect of the present invention, in the first to ninth aspects, sanitary washing in which the same configuration as the twelfth aspect is applied when the heating unit is configured to selectively warm the upper toilet seat casing. 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 present embodiment.

(Embodiment)
FIG. 1 is a perspective view of the appearance of the sanitary washing apparatus according to the present embodiment installed on a toilet and the lid is opened, and FIG. 2 is a perspective view of the appearance of the lid closed. FIG. 3 is a plan view of the sanitary washing apparatus, and FIG. 4 is a side view of the sanitary washing apparatus. FIG. 5 is a cross-sectional view taken along line AA in FIG. 3, and FIG. 6 is a cross-sectional view of a portion where the seating sensor is mounted in the sanitary washing apparatus.

  As shown in FIG. 1, the sanitary washing device 100 includes a main body 200, a toilet seat 300, a lid 400, a remote controller 500, and a human body detection sensor 600. The main body 200, the toilet seat 300, and the lid 400 are integrally formed and installed on the upper surface of the toilet bowl 700.

  A toilet seat 300 and a lid 400 are attached to the main body 200 through a turning mechanism (not shown) so as to be opened and closed electrically. As shown in FIGS. 1, 3, and 4, when the lid 400 is opened, the lid 400 stands so as to be positioned at the rearmost part of the sanitary washing device 100. When the lid 400 is closed as shown in FIG. 2, the lid 400 covers the upper surface of the toilet seat 300 and the side surface of the upper toilet seat casing 310 shown in FIG.

  Further, the main body 200 includes a cleaning water supply mechanism (not shown), a heat exchanger (not shown), a cleaning mechanism including a cleaning nozzle 201 shown in FIG. 5, and a drying unit (not shown). And a control unit (not shown) and the like are incorporated.

  A non-contact seating sensor 202 is installed on the front curved portion 210 of the main body 200. In this example, the seating sensor 202 is a reflective infrared sensor. That is, the main body 200 has a front curved portion 210 that faces the user's buttocks or waist when the user is seated, and the front curved portion 210 is provided with a window hole 211 as shown in FIG. .

  The seating sensor 202 includes a filter 212, a light emitting unit 213 that projects infrared rays inside the filter 212, and a light receiving unit 214 that receives infrared rays that are shielded and reflected by the user. The filter 212 is fitted in the window hole 211 so as to have substantially the same surface as the front curved portion 210.

  The light emitting unit 213 emits infrared rays and the light receiving unit 214 detects and detects the infrared rays reflected by the human body. As a result, the seating sensor 202 detects that the user is seated on the toilet seat 300. An operation unit 203 is provided on the side of the main body 200. The user can operate the main functions of the sanitary washing device 100 with the operation unit 203.

  In this configuration, the surface of the filter 212 and the surface of the main body 200 are the same surface, and there is no unevenness that makes it difficult to wipe off dirt, water droplets, and the like. Therefore, easy cleaning of the main body 200 and the filter 212 and reliable seating detection can be ensured.

  The cleaning water supply mechanism and the heat exchanger are connected to the cleaning nozzle 201. The heat exchanger heats the washing water supplied from the water pipe. The cleaning water supply mechanism supplies hot water to the cleaning nozzle 201. The cleaning nozzle 201 ejects cleaning water toward the user's local area and cleans the user's local area. Although not shown, the cleaning nozzle 201 has a butt cleaning nozzle part for cleaning the butt and a bidet nozzle part for cleaning a female part.

  Further, the drying unit can blow the warm air toward the local area wetted by the washing water and dry the local area.

  The remote controller 500 is provided with a plurality of operation switches. The remote controller 500 is attached to a place such as a wall surface of a toilet room that can be operated by a user who is seated on the toilet seat 300, and signals for operating each function of the sanitary washing device 100 to the main body 200 in accordance with the input of the user. send.

  The human body detection sensor 600 is attached to a wall surface of a toilet room. The human body detection sensor 600 is, for example, a reflection type infrared sensor, and detects that a user has entered the toilet room when detecting infrared light reflected from the human body.

  The control unit of the main body unit 200 controls the operation of each unit of the sanitary washing device 100 based on signals transmitted from the remote controller 500, the human body detection sensor 600, the operation unit 203, and the seating sensor 202.

  Next, the configuration of the toilet seat 300 will be described. FIG. 7 shows a perspective view of the toilet seat 300 in an assembled state, and FIG. 8 shows an exploded perspective view of the toilet seat 300. 9 is a cross-sectional view taken along line BB in FIG. 7, and FIG. 10 is a cross-sectional view taken along line CC in FIG.

  The toilet seat 300 includes an upper toilet seat casing 310, a toilet seat heater 350, and a lower toilet seat casing 320 as main components. A toilet seat heater 350 as a heating unit is built in the toilet seat 300. Hereinafter, the front side viewed from the seated user is defined as the front portion of the toilet seat 300, and the rear side viewed from the seated user is defined as the rear portion of the toilet seat 300. As shown in FIG. 7, the toilet seat 300 has an arm portion 322 at the rear portion, and is supported rotatably by coupling the arm portion 322 to a rotation mechanism (not shown) of the main body portion 200.

  The annular upper toilet seat casing 310 is formed by, for example, forming an aluminum plate having a thickness of about 1 mm by press working or the like. Although it is formed in a substantially elliptical shape in FIG. 8, it may be a horseshoe shape with a broken front part. An alumite layer and a surface decorative layer are provided on the surface of the upper toilet seat casing 310, and a polyester powder coating film having insulating properties and heat resistance is formed on the back surface.

  Instead of the aluminum plate, other metal having good thermal conductivity such as a plate material such as copper or stainless steel or a molded product of magnesium alloy may be used. In addition, the surface treatment applied to the aluminum plate is not limited to the above specifications, and other chemical treatments and other coatings using acrylic or urethane paints or laminating films can also be selected. Is possible.

  In the upper toilet seat casing 310, a back portion 312 is continuously formed at the rear portion of the substantially elliptical annular seating surface 311. In addition, when the upper toilet seat casing 310 is formed in a horseshoe shape, the seating surface 311 also has a horseshoe shape, and this shape is also included in an elliptical shape and an annular shape.

  The seating surface 311 has an inclination in which the outer peripheral portion 311b is higher than the inner peripheral portion 311a. That is, the seating surface 311 has an upwardly convex curved surface. As shown in FIG. 9, the height difference H1 between the inner peripheral portion 311a and the outer peripheral portion 311b at the side portion of the seating surface 311 is, for example, about 25 mm, and is smaller at the front portion.

  The back portion 312 and the seating surface 311 are connected by a continuous concave curved surface, and the upper portion of the back portion 312 is an inclined surface. The upper edge 312a of the back portion 312 is a large curve close to a horizontal line, and the width of the back portion 312 is approximately the same as the lateral width of the seating surface 311.

  As shown in FIG. 10, the height difference H2 between the inner peripheral portion 311a and the upper edge 312a of the back portion 312 at the rear portion of the seating surface 311 is about 80 mm, and the height difference H2 of the back portion 312 is the height difference between the side portions of the seating surface 311. It is about 3.2 times that of H1.

  The toilet seat heater 350 is formed in a substantially horseshoe shape in which a part of an elliptical front part is cut off. The toilet seat heater 350 is adhered to the back surface of the upper toilet seat casing 310. Although not shown, the toilet seat heater 350 is configured by meandering a linear heater between two metal foils made of aluminum. The toilet seat heater 350 is provided with a linear heater so that the seating surface 311 and the back 312 can be heated. In particular, the density is changed depending on the place so that the thigh and buttocks of the seated user can be comfortably heated. A heater is provided.

  The lower toilet seat casing 320 that is substantially elliptical and annular is made of synthetic resin. When the upper toilet seat casing 310 is formed in a horseshoe shape, the lower toilet seat casing 320 is also formed in a horseshoe shape. The lower toilet seat casing 320 is a molded product using a resin material. The lower toilet seat casing 320 includes a main body portion 321 and a pair of arm portions 322. The planar shape of the main body portion 321 is substantially the same shape as the upper toilet seat casing 310. The arm portion 322 protrudes obliquely upward to the rear of both sides of the main body portion 321. The upper toilet seat casing 310 and the lower toilet seat casing 320 are coupled by an inner peripheral portion 311a and an outer peripheral portion 311b. A water-tight portion is constituted by rubber or a resin-based packing or an adhesive sealant at the joint portion.

  As shown in FIG. 5, the upper surface of the main body 200 is slightly higher than the upper edge 312a of the back 312 and the elevation angle D with respect to the upper surface of the main body 200 with respect to the upper edge 312a of the back 312 is 38 degrees. ing. When not in use, the toilet seat 300 is covered with a lid 400 from above. As shown in FIG. 2, since the lid 400 covers the upper surface and side surfaces of the upper toilet seat casing 310 that has the toilet seat heater 350 adhered to the back surface, heat dissipation during standby can be suppressed and the energy saving effect can be improved.

  Next, the posture when the user is seated on the toilet seat 300 will be described. 11 and 12 are schematic views showing a state where the user is seated on the toilet seat.

  As shown in FIG. 11, when the user is seated at the optimal position of the toilet seat 300, the user's thighs are in contact with the seating surface 311, and the rear part of the buttocks is in contact with the back 312. Both the seating surface 311 and the back portion 312 are heated by the toilet seat heater 350, and the user does not feel cold. In other words, the toilet seat heater 350 is preferably configured to heat the seating surface 311 and the back portion 312. With this configuration, it is possible to heat all the portions with which the buttocks are in direct contact, and a comfortable toilet seat 300 can be realized.

  However, when the user is seated on the toilet seat 300, it is rare that the user can be seated at the optimal position from the beginning, and after the user has been seated, it is generally moved to the optimal position while sitting. As shown in FIG. 9, the seating surface 311 of the toilet seat 300 is preferably an upwardly convex curved surface having an inner peripheral portion lower than the outer peripheral portion. With such a curved surface shape, the user can relatively easily move left and right while sitting. Moreover, since the toilet seat 300 has a low inclination of the inner periphery, the user can easily sit in the center.

  On the other hand, when the user tries to move to the back of the toilet seat 300, the back of the buttocks comes into contact with the back 312. As described above, the back portion 312 restricts the user from moving backward further. Therefore, the buttocks do not contact the main body 200, and the user does not feel uncomfortable such as being cold. That is, the back portion 312 restrains the user's buttocks from coming into contact with the main body portion 200 by restricting rearward movement of the seated user's buttocks. In addition, since the seating surface 311 and the back portion 312 are continuously formed, it is possible to easily clean the portion in direct contact with the body, and a comfortable and sanitary toilet seat can be obtained. In particular, by forming the curved portion 312b of the back portion 312 with a concave curved surface, the rearward movement of the collar portion can be more reliably regulated.

  Further, when the seating sensor 202 is provided on the surface of the main body 200, the back portion 312 prevents the user's buttocks and waist from coming into contact with the seating sensor 202. Thereby, even when the user does not sit at the optimum seating position or when the user carelessly moves when sitting, the buttocks do not touch the seating sensor 202 carelessly. For this reason, the seating sensor 202 does not interfere with the seating detection due to the buttocks or the like coming into contact with the seating sensor 202, and the seating detection can be performed reliably. Further, since the seating sensor 202 can be formed on substantially the same surface as the main body 200, the cleanability of the main body 200 is not impaired.

  The upper edge 312a of the back portion 312 is a large curve close to the horizontal line, and the width of the upper edge 312a is preferably approximately the same as the lateral width of the seating surface 311. With this shape, the back 312 faces the entire width of the rear surface of the user's buttocks and restricts backward movement within a predetermined height range. Therefore, it can suppress more reliably that a collar part contacts the main-body part 200. FIG. The upper edge 312a may be a horizontal straight line or other shapes, and the back portion 312 only needs to cover the entire front inclined portion 200a below the main body 200 as shown in FIG. As described above, the toilet seat 300 includes an elliptical and annular seating surface 311 and a back portion 312 that is provided continuously behind the seating surface 311 and has a curved portion 312b and extends obliquely upward.

  In particular, the height difference H2 between the inner peripheral portion of the toilet seat 300 shown in FIG. 10 and the upper edge 312a of the back portion 312 is preferably three times or more of the height difference H1 of the side portion of the toilet seat 300 shown in FIG. In this way, it is possible to almost restrict the seated user from moving backward. In addition, if the height difference H2 is set to 5 times or less of the height difference H1, the shape of the toilet seat 300 becomes compact and the merchantability increases.

  In addition, when the patient is forced to move backward or when an obese person is seated, a part of the body may protrude rearward from the back 312 as shown in FIG. In such a case, it is preferable that the main body 200 is not disposed in the range above 45 degrees of the elevation angle D with the upper edge of the back portion 312 as the base point described in FIG. That is, it is preferable to dispose the main body 200 only in the range where the elevation angle D with respect to the upper edge of the back 312 is 45 degrees or less. With such a configuration, even if the user is seated by pressing the rear surface of the buttocks against the back portion 312, the buttocks hardly contact the seating sensor 202 mounted so as to be substantially flush with the surface of the main body 200.

  In the present embodiment, the elevation angle D formed by the upper edge 312a of the back portion 312 of the toilet seat 300 and the upper surface of the main body portion 200 is 38 degrees, and the main body portion 200 does not exist in the range above 45 degrees. Therefore, the rear part of the body hardly contacts the main body part 200.

  Next, a more preferable shape of the toilet seat 300 will be described with reference to FIGS. 13 is a side view of the toilet seat 300, FIGS. 14 and 15 are enlarged sectional views of the toilet seat 300, FIG. 14 shows the vicinity of the inner peripheral portion 311a in FIG. 9, and FIG. 15 shows the vicinity of the outer peripheral portion 311b.

  As shown in FIG. 13, the upper toilet seat casing 310 has a seating surface 311 and a rib 313 erected from the back portion 312 toward the lower toilet seat casing 320. The height H4 of the rib 313 in the back portion 312 is lower than the height H3 of the rib 313 in the seating surface 311. When the toilet seat heater 350 warms the seating surface 311 and the back portion 312, the power dissipation increases because the heat dissipation area is large. The upper toilet seat casing 310 supports the weight of the user, most of which is supported by the seating surface 311. Therefore, even if the height H4 of the rib 313 is lower than the height H3 of the seating surface 311 in the back portion 312, there is no problem in strength. Further, by reducing the height H4 of the rib 313 at the back portion 312, the heat radiation area can be reduced, and the power consumption can be reduced.

  The height H3 of the rib 313 on the seating surface 311 is preferably 5 mm or more and 40 mm or less, more preferably 15 mm or more and 20 mm or less. By setting the height H3 of the rib 313 in such a range, the upper toilet seat casing 310 heated by the toilet seat heater 350 can cover the range where the user's buttocks touch, while ensuring the strength of the seating surface 311. it can. Therefore, it becomes possible to heat all the parts with which the buttocks are in direct contact, and a comfortable toilet seat can be realized.

  14 and 15, it is preferable that the upper toilet seat casing 310 protrudes from the lower toilet seat casing 320 in the horizontal direction in a state where the toilet seat 300 is placed on the toilet bowl 700. With such a configuration, even when an obese user sits on the toilet seat 300, it is possible to heat all the parts that the buttocks are in direct contact with, thereby realizing a comfortable toilet seat.

  Next, the operation and action of the sanitary washing device 100 will be described. When not in use, the lid 400 is closed and covers the upper surface of the toilet seat 300 and the side surface of the upper toilet seat casing 310. When the room temperature is low, such as in winter, the toilet seat heater 350 is energized under the control of the control unit built in the main body 200. Therefore, the temperature of the toilet seat 300 is adjusted so as to be about 18 ° C., for example. The temperature at this time is referred to as a standby temperature. In addition, when the room temperature is high in summer or the like, the temperature of the toilet seat 300 is also increased, so that the toilet seat heater 350 is not energized.

  Here, when the user operates a toilet seat temperature adjustment switch (not shown) of the remote controller 500, the set temperature is transmitted to the control unit. The control unit stores the set temperature received from the remote controller 500 in a storage unit (not shown).

  When the user enters the toilet room, the human body detection sensor 600 detects the user's entry. Thereby, the user's entry detection signal is transmitted to the control unit.

  When the control unit detects entry of the user into the toilet room based on an entry detection signal from the human body detection sensor 600, the control unit opens the lid 400 and specifies the driving of the toilet seat heater 350 based on the stored set temperature. Select the control pattern. Based on the selected control pattern and time information obtained by a timekeeping unit (not shown), the control unit controls the driving of the toilet seat heater 350. Thereby, the toilet seat heater 350 is driven to rise in temperature, and the temperature of the toilet seat 300 is instantaneously raised to the set temperature. Thus, if the seating surface 311 is driven to be heated only when the human body detection sensor 600 detects a human body, the energy efficiency is increased.

  The maximum capacity of the toilet seat heater 350 is designed to be 1200 W, for example. In order to instantaneously increase the temperature to the set temperature, the toilet seat heater 350 is driven at a maximum capacity until at least the surface temperature of the toilet seat 300 reaches a minimum temperature at which the user does not feel uncomfortable when seated. The Hereinafter, this temperature is referred to as a cooling sensation limit temperature. The cooling sensation limit temperature is found to be about 29 ° C. by subject experiments.

  On the other hand, from the subject experiment, it is known that the average value of the shortest time required for the user to take off from the normal clothes state and to sit on the toilet seat 300 after entering the toilet room is 6 seconds. Therefore, the time required to start driving the toilet seat heater 350 and reach the cool sensation limit temperature (29 ° C.) may be set shorter than the time required for the user to undress and sit. Thus, the user does not feel cold when sitting on the toilet seat 300.

  When the user sits on the toilet seat 300 whose temperature has risen above the cooling sensation limit temperature, the seat sensor 202 detects the seated human body and transmits a detection signal to the control unit. Thereby, the operation of the washing function and the drying function that can be used in the sitting state can be performed.

  For example, when the user operates the butt cleaning switch (not shown) of the remote controller 500, the butt cleaning nozzle of the cleaning nozzle 201 protrudes forward, and the cleaning water spouts to start the butt cleaning. Next, when an end switch (not shown) is operated, the ejection of cleaning water stops and the hip cleaning nozzle is stored in the original storage position.

  Next, when the user operates a drying switch (not shown), the control unit controls the drying unit. Thereby, warm air blows out toward the user's buttocks, and the buttocks that have been wet by washing can be dried.

  When the user stands up from the toilet seat 300, the seating sensor 202 detects that the user has left the seat and transmits a detection signal to the control unit. With this signal, the control unit stops energizing the toilet seat heater 350 after a predetermined time has elapsed.

  When the user leaves the toilet room, the human body detection sensor 600 stops transmitting the human body detection signal, so that the control unit closes the lid 400 after a predetermined time.

  In the above description, the configuration using infrared reflection as the non-contact type seating sensor 202 has been described, but the present invention is not limited to this. A sensor that detects seating by changing capacitance when a human body approaches may be provided on the surface of the main body 200 as the seating sensor 202. Such a sensor is disclosed in, for example, JP-A-9-117475.

  In the above description, the toilet seat 300 has been described in which the upper toilet seat casing 310 is made of metal, the lower toilet seat casing 320 is made of resin, and the toilet seat heater 350 is adhered to the back side of the upper toilet seat casing 310. However, the present invention is not limited to this. Instead of the toilet seat heater 350, a heat radiation type lamp heater may be disposed in the toilet seat 300, the upper toilet seat casing 310 may be made of metal or resin, and a radiant heat absorption layer may be formed on the back side. A toilet seat having such a configuration is disclosed in, for example, Japanese Patent Application Laid-Open No. 2000-210230. Thus, the configuration of the toilet seat heater is not limited.

  Even in this case, when the thermal conductivity of the upper toilet seat casing 310 is higher than the thermal conductivity of the lower toilet seat casing 320, it is preferable to adjust the height of the rib 313 provided in the upper toilet seat casing 310. That is, the power consumption can be reduced by making the height H3 at the back portion 312 of the rib 313 provided in the upper toilet seat casing 310 lower than the height H4 of the rib 313 on the seating surface 311.

  Regardless of the material of the upper toilet seat casing 310, when the upper toilet seat casing 310 is selectively warmed, the height of the rib 313 on the seating surface 311 is preferably 5 mm or more and 40 mm or less, more preferably 15 mm or more and 20 mm or less. preferable. Moreover, it is preferable that the upper toilet seat casing 310 protrudes from the lower toilet seat casing 320 in the horizontal direction in a state where the toilet seat 300 is placed on the toilet bowl. Thereby, it can prevent that a user's buttocks etc. contact the lower toilet seat casing 320 which is not warmed.

  As described above, the user who uses the sanitary washing device according to the present invention can easily sit at the optimum position of the seating surface, and can use the sanitary washing device comfortably without impairing the cleanability. The configuration of the sanitary washing device according to the present invention can also be applied to the use of seating tools such as furniture.

The perspective view which shows the cover open state of the sanitary washing apparatus by embodiment of this invention The perspective view which shows the cover closed state of the sanitary washing apparatus by embodiment of this invention The top view of the sanitary washing apparatus by embodiment of this invention Side view of a sanitary washing device according to an embodiment of the present invention Sectional drawing in the AA line of FIG. Sectional drawing of the seating sensor mounting part of the sanitary washing apparatus by embodiment of this invention The perspective view which shows the assembly state of the toilet seat of the sanitary washing apparatus by embodiment of this invention The disassembled perspective view of the toilet seat of the sanitary washing apparatus by embodiment of this invention Sectional drawing in the BB line of FIG. Sectional drawing in the CC line of FIG. The schematic diagram which shows the state which the user sat down to the sanitary washing apparatus by embodiment of this invention. The schematic diagram which shows another state in which the user sat down to the sanitary washing apparatus by embodiment of this invention Side view of toilet seat of sanitary washing device according to an embodiment of the present invention The enlarged view of the section of the toilet seat of the sanitary washing device by an embodiment of the invention The enlarged view of the section of the toilet seat of the sanitary washing device by an embodiment of the invention The perspective view which shows the external appearance of the conventional sanitary washing apparatus Schematic showing the seating state of a conventional sanitary washing device

DESCRIPTION OF SYMBOLS 100 Sanitary washing apparatus 200 Main body part 200a Front inclined part 201 Cleaning nozzle 202 Seat sensor 203 Operation part 210 Front curved part 211 Window hole 212 Filter 213 Light emission part 214 Light receiving part 300 Toilet seat 310 Upper toilet seat casing 311 Seating surface 311a Inner peripheral part 311b Outer periphery Part 312 back part 312a upper edge 312b curved part 320 lower toilet seat casing 321 body part 322 arm part 350 toilet seat heater (heating part)
400 Lid 500 Remote controller 600 Human body detection sensor 700 Toilet bowl

Claims (15)

A main body mounted on the toilet bowl and incorporating a cleaning mechanism;
A toilet seat with a built-in heating part and rotatably supported by the main body part,
The toilet seat
An elliptical and annular seating surface;
A back portion that is provided continuously behind the seating surface and has a curved portion and extends obliquely upward;
The sanitary washing apparatus which controls that the user's buttocks contact the said main-body part by controlling the movement to the back of the buttocks of the user who the said back part sat down. The sanitary washing device according to claim 1, wherein the width of the upper edge of the back portion is substantially the same as the width of the outer periphery of the seating surface. A non-contact seating sensor for detecting a seating state on the toilet seat, provided on the surface of the main body,
The sanitary washing device according to claim 1 or 2, wherein the back portion prevents the user's buttocks and waist from contacting the seating sensor. The main body portion has a front curved portion facing the user's buttocks or waist when the user is seated, and a window hole is provided in the front curved portion,
The seating sensor is
A filter fitted in the window hole so as to be substantially the same surface as the main body,
A light emitting unit that projects infrared rays inside the filter;
The sanitary washing device according to claim 3, further comprising: a light receiving unit that receives infrared light that is shielded and reflected by the user. The seating surface has an inner peripheral portion having a lower slope than the outer peripheral portion, and the difference in height between the inner peripheral portion of the seating surface at the rear center of the toilet seat and the upper edge of the back portion is determined on the side of the seating surface. The sanitary washing device according to any one of claims 1 to 4, wherein the sanitary washing device has a height difference of three times or more between the inner peripheral portion and the outer peripheral portion. The sanitary washing device according to any one of claims 1 to 5, wherein the seating surface is formed with an upward convex curved surface, and the back portion is formed with a concave curved surface. The sanitary washing device according to any one of claims 1 to 6, wherein the main body portion is arranged only in a range in which an elevation angle with respect to an upper edge of the back portion is 45 degrees or less. A human body detection sensor for detecting a human body;
The sanitary washing device according to any one of claims 1 to 7, further comprising: a control unit that starts driving to raise the temperature of the heating unit based on a detection signal of the human body detection sensor. The sanitary washing device according to any one of claims 1 to 8, wherein the heating unit is configured to be able to heat the seating surface and the back portion. The toilet seat has a lower toilet seat casing that is placed on the toilet, and an upper toilet seat casing that is combined with the lower toilet seat casing and is made of a material having higher thermal conductivity than the lower toilet seat casing,
The upper toilet seat casing has ribs erected from the seating surface and the back portion toward the lower toilet seat casing, and a height of the rib in the back portion is lower than a height of the rib in the seating surface. The sanitary washing device according to 9. The sanitary washing device according to claim 10, wherein a height of the rib on the seating surface is 5 mm or more and 40 mm or less. The sanitary washing device according to claim 10 or 11, wherein the upper toilet seat casing projects in a horizontal direction from the lower toilet seat casing in a state where the toilet seat is placed on the toilet. The toilet seat has a lower toilet seat casing placed on the toilet bowl and an upper toilet seat casing combined with the lower toilet seat casing, and the heating unit is configured to selectively warm the upper toilet seat casing,
10. The upper toilet seat casing has ribs erected from the seating surface and the back portion toward the lower toilet seat casing, and the height of the ribs on the seating surface is 5 mm or more and 40 mm or less. The sanitary washing device according to any one of the above. The sanitary washing device according to claim 13, wherein the upper toilet seat casing protrudes in a horizontal direction from the lower toilet seat casing in a state where the toilet seat is placed on the toilet bowl. The toilet seat has a lower toilet seat casing placed on the toilet bowl and an upper toilet seat casing combined with the lower toilet seat casing, and the heating unit is configured to selectively warm the upper toilet seat casing,
The sanitary washing device according to any one of claims 1 to 9, wherein the upper toilet seat casing protrudes in a horizontal direction from the lower toilet seat casing in a state where the toilet seat is placed on the toilet.

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