JP2012072611A - Sanitary washing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sanitary washing device capable of preventing the splash of dirty water in bidet washing in which washed area is enlarged by moving the area on which wash water arrives back and forth.SOLUTION: The sanitary washing device includes a water discharge hole and a nozzle for the jet of the wash water from the water discharge hole to a female genital area. The nozzle includes: water discharge means for jetting the wash water in conical shape from the discharge water hole to the predetermined area of the female genital area; and washed area back and forth enlargement means for making the area to be washed larger than the predetermined area by moving the predetermined area back and forth to form the area on which the wash water can arrive. By the washed area back and forth enlargement means, a wash water continuously arriving area is always being formed in the middle of the predetermined enlarged area while the predetermined area moves back and forth.

Description

  Aspects of the present invention generally relate to a sanitary washing apparatus, and more particularly to a sanitary washing apparatus that uses water to wash a woman's local area of a user sitting on a Western-style sitting toilet.

  As a human body cleaning device that cleans the human body, by simultaneously performing both nozzle reciprocating motion and pseudo-conical water discharge type cleaning water discharge, the human body in which the water discharge in the form of pseudo-conical water discharge moves back and forth as the nozzle moves There is a cleaning device (Patent Document 1). According to the human body washing apparatus described in Patent Document 1, for example, a wash cleaning of a female local area or the like is performed in such a manner that washing water spouting in the form of pseudo-conical water spouting continues over the reciprocating range of the nozzle. As a result, it is possible to create a new feeling of cleaning that the female local area and the like are cleaned over a very wide range, and to give the user a new feeling of cleaning.

  However, in the human body washing apparatus described in Patent Document 1, the range in which the flush water discharge in the form of a pseudo-conical water discharge is relatively narrow. For this reason, a region where the cleaning water always lands during move cleaning is not formed. Therefore, at the time of the move cleaning, in the vicinity of the center of the nozzle back-and-forth reciprocating range (move range), the discharged cleaning water lands on the center (vaginal opening) of the female local area. On the other hand, in the vicinity of the front and rear end portions of the moving range, the discharged wash water comes off from the central portion of the female local area and reaches the water. In other words, it does not land on the center of the women's department. For this reason, the washing water may come and go over the vaginal opening where menstrual blood stains are not fixed. In this case, when the washing water passes through the vaginal opening, menstrual blood stains that are not fixed in the vicinity of the vaginal opening may be scattered as the washing water passes. The menstrual blood stains thus scattered adhere to the user's body, the sanitary washing device, the bowl surface of the toilet bowl, and the like.

JP 2000-282545 A

  The present invention has been made on the basis of recognition of such a problem, and prevents contamination from being scattered during bidet cleaning in which the region where the cleaning water lands is reciprocated in the front-rear direction to enlarge the cleaning region. An object of the present invention is to provide a sanitary washing device capable of performing the above.

  1st invention has a water discharge hole, It equips the female local part by injecting wash water from the said water discharge hole, and the said nozzle is the said wash water so that it may diffuse conically from the said water discharge hole. Water discharge means for spraying water onto a predetermined area of the female local area, and an area that is larger than the predetermined area by reciprocating the predetermined area in the front-rear direction. Cleaning area front and rear enlargement means for forming a waterable landing area, and the cleaning area front and rear enlargement means is configured to always contact the washing water while the predetermined area reciprocates in the front and rear direction. The sanitary washing device is characterized in that a water region is formed at a central portion of the water landing region.

  According to this sanitary washing device, while the washing water is diffused in a conical shape, a predetermined region of the washing water sprayed from the water discharge hole is reciprocated in the front-rear direction to expand the washing water in a wider range before and after the conventional method. Wide move bidet washing can be performed. Further, a constant water landing area where the washing water always lands while a predetermined area reciprocates in the front-rear direction is formed at the center of the water landing area. For this reason, it is possible to prevent menstrual blood stains that are not firmly fixed in the vicinity of the vaginal opening of the female part from being scattered during wide move bidet washing. In addition, during the wide move bidet cleaning, a constant water landing region where the cleaning water always lands is formed in the vicinity of the vaginal opening, so there is little possibility of giving a feeling of being traced. Thereby, comfortable bidet washing can be performed.

  Further, in a second invention according to the first invention, the front and rear enlargement means for cleaning area stops the reciprocating movement for a predetermined time when the predetermined area reaches the front end and the rear end of the water landing area. This is a sanitary washing device.

  According to this sanitary washing device, when a predetermined area of the cleaning water is reciprocated in the front-rear direction and enlarged, the cleaning water can be landed on the front end and the rear end of the landing area for a predetermined time. Therefore, it is possible to make the washing water with a larger flow rate land on the front end portion and the rear end portion of the landing area. Thereby, a user can be made to realize that the front-end part and rear-end part which are always located in the front-back direction of a water landing area | region are also wash | cleaned. Further, it is possible to perform wide move bidet cleaning with higher satisfaction.

  In addition, according to a third aspect based on the first aspect, the front and rear enlargement means for the cleaning area is a front end area that is a front end area of the landing area and a rear end area that is a rear end area of the landing area. The moving speed of the predetermined area when the predetermined area moves in the area is made slower than the moving speed of the predetermined area when the predetermined area moves in the center of the landing area. This is a sanitary washing device.

  According to this sanitary washing device, when the predetermined area of the cleaning water is reciprocated in the front-rear direction and enlarged, the moving speed of the predetermined area is set to the front landing area and the rear end area of the landing area. The washing water can be allowed to land for a longer time than when it is not changed. Alternatively, it is possible to cause the washing water having a larger flow rate to land on the front landing area and the rear end area of the landing area than when the moving speed of the predetermined area is not changed. Thereby, it is possible to make the user feel that the front landing area and the rear landing area that are always positioned in the front-rear direction of the landing area are also washed. Further, it is possible to perform wide move bidet cleaning with higher satisfaction.

  In a fourth aspect based on the third aspect, the cleaning area front-rear enlargement means controls the water discharge means by controlling the nozzle drive section and a nozzle drive section that moves the water discharge means in the front-rear direction. A controller that reciprocates in the front-rear direction, and the controller controls a moving speed of the water discharge means when the predetermined area moves in the front landing area and the rear landing area. The sanitary washing apparatus is characterized in that control is performed to make the central portion of the water landing area slower than the moving speed of the water discharging means when the predetermined area moves.

  According to this sanitary washing device, by the relatively simple control of changing the moving speed of the water discharging means, compared to the case where the moving speed of the water discharging means is not changed in the front landing area and the rear end area of the landing area. The water can be washed for a long time.

  Further, according to a fifth aspect based on the first aspect, the front and rear enlargement means for the cleaning area is a front end area that is a front end area of the landing area and a rear end that is a rear end area of the landing area. The sanitary washing apparatus is characterized in that each time the predetermined area moves to the area, the predetermined area is reciprocated a plurality of times in the front-rear direction within the range of the front landing area and the rear end area.

  According to this sanitary washing device, every time a predetermined area moves to the front landing area and the rear landing area, the predetermined area is moved a plurality of times in the front-rear direction in the front landing area and the rear landing area. Move back and forth. Therefore, in the range of the landing front end region and the landing rear end region, it is possible to land the washing water with a larger flow rate than when the predetermined region is not reciprocated a plurality of times. Alternatively, when a predetermined area of the cleaning water is reciprocated in the front-rear direction and enlarged, the cleaning water is longer in the range of the front landing area and the rear end area than when the water discharge means is not reciprocated several times. Can be landed. Thereby, it is possible to make the user feel that the front landing area and the rear landing area that are always positioned in the front-rear direction of the landing area are also washed. Further, it is possible to perform wide move bidet cleaning with higher satisfaction.

  Further, in a sixth aspect based on the first aspect, when the predetermined area reaches the front end and the rear end of the water landing area, the cleaning area front-rear enlargement means is configured such that the predetermined area is the water landing area. The sanitary washing apparatus is characterized in that washing water having a flow rate larger than that when moving in the central portion is jetted from the water discharge hole.

  According to this sanitary washing apparatus, it is possible to land the washing water having a larger flow rate at the front end portion and the rear end portion of the landing area than when the flow rate of the jetted washing water is not changed. Alternatively, when a predetermined area of the cleaning water is reciprocated in the front-rear direction and expanded, the cleaning water has a longer time than when the flow rate of the cleaning water sprayed is not changed at the front end portion and the rear end portion of the landing area. Can be landed. Thereby, a user can be made to realize that the front-end part and rear-end part which are always located in the front-back direction of a water landing area | region are also wash | cleaned. Further, it is possible to perform wide move bidet cleaning with higher satisfaction.

  In addition, according to a seventh aspect, in the first aspect, when the predetermined area reaches the front end and the rear end of the water landing area, the predetermined area extends to the water landing area. The sanitary washing apparatus is characterized in that washing water having a flow rate faster than that when moving in the center is jetted from the water discharge hole.

  According to this sanitary washing device, it is possible to land the washing water at a flow rate faster than the case where the flow rate of the washing water to be injected is not changed at the front end portion and the rear end portion of the landing area. Alternatively, when a predetermined area of the washing water is reciprocated in the front-rear direction and enlarged, the washing water for a longer time than when the flow rate of the washing water sprayed is not changed at the front end portion and the rear end portion of the landing area. Can be landed. Thereby, a user can be made to realize that the front-end part and rear-end part which are always located in the front-back direction of a water landing area | region are also wash | cleaned. Further, it is possible to perform wide move bidet cleaning with higher satisfaction.

  According to the aspect of the present invention, there is provided a sanitary washing apparatus capable of preventing dirt from being scattered during bidet washing in which a washing water landing area is reciprocated in the front-rear direction to enlarge the washing area. .

It is a perspective schematic diagram showing the toilet apparatus provided with the sanitary washing apparatus concerning embodiment of this invention. It is a block diagram showing the principal part structure of the sanitary washing apparatus concerning this embodiment. It is a plane schematic diagram showing the area | region where the wash water of this embodiment lands. It is a cross-sectional schematic diagram for demonstrating wide water discharge. It is a graph showing the specific example of the locus | trajectory of the water discharge hole of a nozzle. It is a conceptual schematic diagram explaining the notation method of a predetermined area | region and a landing water flow rate. It is a conceptual schematic diagram showing the relationship between the predetermined | prescribed area | region of a comparative example, and a landing water flow volume. It is a conceptual schematic diagram showing the relationship between the predetermined area | region of this specific example, and a water landing flow volume. It is a graph showing the other specific example of the locus | trajectory of the water discharge hole of a nozzle. It is a conceptual schematic diagram showing the relationship between the predetermined area | region of this specific example, and a water landing flow volume. It is a graph showing the other specific example of the locus | trajectory of the water discharge hole of a nozzle. It is a graph showing the other specific example of the locus | trajectory of the water discharge hole of a nozzle. It is a graph which illustrates the specific example of a flow volume. It is a graph which illustrates the specific example of a flow velocity. It is a perspective schematic diagram which illustrates the specific example of the nozzle of this embodiment. It is the upper surface schematic diagram which looked at the nozzle of this example from the upper direction. It is a cross-sectional schematic diagram in the cut surface BB represented to FIG.

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 showing a toilet apparatus provided with a sanitary washing device according to an embodiment of the present invention.

  The toilet device shown in FIG. 1 includes a Western-style seat toilet (hereinafter simply referred to as “toilet” for convenience of explanation) 800 and a sanitary washing device 100 provided thereon. The sanitary washing 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 casing 400 incorporates a local cleaning function unit that realizes cleaning of the female local part of the user sitting on the toilet seat 200. Further, for example, the casing 400 is provided with a seating detection sensor 404 that detects that the user has sat on the toilet seat 200. When the seating detection sensor 404 detects a user sitting on the toilet seat 200, when the user operates an operation unit such as a remote controller (not shown), the nozzle 410 can be advanced into the bowl 801 of the toilet 800. . In the sanitary washing device 100 shown in FIG. 1, the nozzle 410 has entered the bowl 801.

  One or a plurality of water discharge holes 411 are provided at the tip of the nozzle 410. And the nozzle 410 can wash | clean the female part of the user who sat on the toilet seat 200 by injecting water from the water discharge hole 411 provided in the front-end | tip part. For example, in the nozzle 410 illustrated in FIG. 1, one of the two water discharge holes 411 is a water discharge hole for bidet cleaning, and the other water discharge hole 411 is a water discharge hole for butt cleaning. . In the present specification, “water” includes not only cold water but also heated hot water.

FIG. 2 is a block diagram showing a main configuration of the sanitary washing device according to the present embodiment.
In addition, FIG. 2 represents together the principal part structure of the waterway system and the electrical system.
The sanitary washing device 100 according to this embodiment includes a flow path 10 that guides water supplied from a water supply source (not shown) such as a water supply or a water storage tank. An electromagnetic valve 440 is provided on the upstream side of the flow path 10. The electromagnetic valve 440 is an electromagnetic valve that can be opened and closed, and controls the supply of water to the heat exchanger 450 based on a command from the control unit 405 provided inside the casing 400.

A heat exchanger 450 is provided on the downstream side of the electromagnetic valve 440. The heat exchanger 450 heats the supplied water to make predetermined hot water. The heat exchanger 450 may be, for example, an instantaneous heating type heat exchanger using a sheathed heater or the like, or a hot water storage type heat exchanger using a hot water storage tank.
A pressure modulation device 470 is provided on the downstream side of the heat exchanger 450. The pressure modulation device 470 can pulsate the flow of water in the flow path 10 and pulsate the water ejected from the water discharge hole 411 of the nozzle 410.

  A nozzle 410 is provided on the downstream side of the pressure modulation device 470. The nozzle 410 includes a flow rate adjustment valve 480 that adjusts the water flow (flow rate), a nozzle body (water discharge means) 420 that injects wash water from the water discharge holes 411 and lands on a predetermined region of the female local area, and a control unit (wash). And a nozzle drive unit (cleaning area front / rear enlargement means) 460 for moving the nozzle 410 forward and backward based on a command from the 405.

The nozzle body 420 receives the driving force from the nozzle driving unit 460 and can advance or retract into the bowl 801 of the toilet bowl 800. The nozzle body 420 can spray cleaning water so as to diffuse in a conical shape from the water discharge hole 411 in a state where the nozzle body 420 has advanced into the bowl 801. This will be described in detail later.
The nozzle driving unit 460 can reciprocate in a front-rear direction a predetermined region where the cleaning water sprayed from the nozzle main body 420 lands by reciprocating the nozzle main body 420 in the front-rear direction (see FIG. 1). . Thereby, the nozzle drive part 460 can expand the water landing area | region where the washing water sprayed from the nozzle main body 420 can land in the front-back direction (move washing | cleaning).
The flow rate adjustment valve 480 can adjust the water flow, and can open, close, and switch water supply to the nozzle 410.

  The method for reciprocating the predetermined area in the front-rear direction is not limited to reciprocating the nozzle body 420 in the front-rear direction. For example, the predetermined area may be reciprocated in the front-rear direction by changing the water discharge angle of the cleaning water sprayed from the nozzle body 420.

FIG. 3 is a schematic plan view showing a region where the cleaning water of this embodiment is landed.
FIG. 3A is a schematic plan view showing a predetermined region where the washing water sprayed from the stationary nozzle body lands, and FIG. 3B shows the nozzle body moving back and forth in the front-rear direction. It is a plane schematic diagram showing the landing area | region where the wash water injected can land.

The washing water sprayed from the nozzle body 420 of the present embodiment lands on a wider area of the female part of the user sitting on the toilet seat 200 as shown in FIG. 3A (wide washing). The washing water sprayed from the nozzle body 420 has a spread of about 30 to 45 mm when landing on a female local area. Then, the wash water sprayed from the nozzle body 420 lands on the female local area from an obliquely lower side behind the female local area. Therefore, the dimension D1 in the left-right direction of the predetermined region 540 where the washing water sprayed from the nozzle body 420 lands is, for example, about 30 to 45 mm (millimeters). The dimension D2 in the front-rear direction of the predetermined region 540 is, for example, about 70 to 130 mm.
The nozzle drive unit 460 of this embodiment can reciprocate the predetermined region 540 in the front-rear direction as indicated by arrows A4 and A5 shown in FIG. Thereby, as illustrated in FIG. 3B, the nozzle driving unit 460 expands the landing area 550 in which the cleaning water sprayed from the nozzle body 420 can be landed in the front-rear direction than the predetermined area 540. Can be made.

At this time, in the center of the water landing area 550, there is a constant water landing area 551 where the washing water always reaches while the predetermined area 540 reciprocates in the front-rear direction.
Here, in the specification of the present application, the range of “always where the washing water always lands” includes not only the case where water constantly lands continuously, but also the landing of water droplets or the like at predetermined time intervals. The following cases are included. In other words, in the present specification, “always having the washing water landed” means that the water always falls within the landing range.

  Moreover, in the part located in the front-back direction of the constant water landing area | region 551, the time which the washing water sprayed from the nozzle main body 420 lands is about 50 to 99% of the whole water discharging time. 553 and 554 exist. Further, in the portions located in the front-rear direction of the landing intermediate regions 553 and 554, the landing front end region in which the time for landing of the cleaning water sprayed from the nozzle body 420 is shorter than the time in the landing intermediate regions 553 and 554 557 and a trailing edge region 558 are present. That is, the landing front end region 557 shown in FIG. 3 is a landing region in the front end region of the landing region 550. 3 is a landing area in the rear end area of the landing area 550. The landing area 558 shown in FIG.

  The washing water sprayed from the nozzle body 420 has an unprecedented spread of about 30 to 45 mm in the left-right direction and about 70 to 130 mm in the front-rear direction when landing on the female local area. For this reason, the width of the predetermined area 540 in the move cleaning can be reduced. Therefore, such a constant water landing region 551 is formed.

  As shown in FIG. 3, by providing a constant water landing area 551 in which the washing water always reaches at the center of the water landing area 550, it adheres in the vicinity of the vaginal opening of the female local area during wide move bidet cleaning. It is possible to prevent menstrual blood stains that have not been scattered. Further, since there is always a water landing area 551 where the washing water lands in the vicinity of the vaginal opening during the move cleaning, there is little possibility of giving a feeling of being traced. Thereby, comfortable bidet washing can be performed.

Here, wide water discharge (wide cleaning) will be described with reference to the drawings.
FIG. 4 is a schematic cross-sectional view for explaining wide water discharge.

  The nozzle 410 of this embodiment includes a nozzle body 420 and a throat 430. Inside the nozzle body 420, a wide water discharge channel 427 through which wash water supplied from a water source (not shown) passes, a swirl chamber 423 capable of generating swirl flow, and wash water from the swirl chamber 423 to the throat 430. And a communication path 425 for guiding. In addition, a projecting portion 424 that generates a swirling flow with a more stable swirl force is provided at the center of the swirl chamber 423.

  The swirl chamber 423 is formed by a large-diameter inner peripheral wall 423e having a larger diameter at the bottom and an inclined inner peripheral wall 423f having a diameter contracted toward the communication path 425, and is a hollow chamber. The inclined inner peripheral wall 423f is connected to the communication path 425 at one end thereof. On the other hand, the wide water discharge channel 427 is eccentrically connected to the swirl chamber 423. More specifically, the wide water discharge channel 427 is connected in the tangential direction of the large-diameter inner peripheral wall 423e of the swirl chamber 423.

  Inside the throat 430, a throat flow path 431 through which the cleaning water sprayed from the communication passage 425 of the nozzle body 420 passes is provided. Further, at one end of the throat channel 431, a water discharge hole 433 for discharging the cleaning water that has passed through the throat channel 431 to the outside of the throat 430 is formed. That is, when the nozzle 410 has the throat 430 like the nozzle 410 shown in FIG. 4, the water discharge hole 433 provided in the throat 430 functions as the water discharge hole 411 shown in FIG. 1. In the throat flow path 431 in the vicinity of the water discharge hole 433, a taper portion 432 is formed in which the flow path expands toward the water discharge hole 433.

  In the nozzle 410 of the present embodiment, a gap is provided between the nozzle body 420 and the throat 430, but this gap is not necessarily provided. That is, the nozzle body 420 and the throat 430 may be integrally formed, and the communication path 425 and the throat flow path 431 may be connected.

  Wash water supplied from a water source (not shown) passes through the wide water discharge channel 427, is supplied to the nozzle 410, and flows into the swirl chamber 423. Here, since the wide water discharge channel 427 is connected in the tangential direction of the inner peripheral wall 423e of the large-diameter portion of the swirl chamber 423, the wash water flowing into the swirl chamber 423 is as indicated by an arrow A3 shown in FIG. Rotate along the large-diameter portion inner peripheral wall 423e and the inclined inner peripheral wall 423f. Then, the wash water swirled in the swirl chamber 423 passes through the communication path 425 while maintaining swirl force, and is injected into the throat flow path 431 of the throat 430. At this time, since the cleaning water sprayed from the nozzle body 420 maintains the turning force, it is sprayed in a hollow conical shape as a liquid film having a hollow portion at the center. Hereinafter, for convenience of explanation, the washing water sprayed in a hollow conical shape is referred to as “hollow conical water discharge”.

  The wash water that has flowed into the throat flow path 431 flows along the inner wall of the throat flow path 431 while maintaining the turning force, and is guided to the water discharge hole 433. That is, the washing water passing through the throat flow path 431 flows so as to adhere to the inner wall of the throat flow path 431. Therefore, the wash water flowing through the throat flow path 431 receives resistance due to frictional force from the inner wall of the throat flow path 431, and the flow rate of the wash water becomes smaller toward the water discharge hole 433. As a result, as shown in FIG. 4, the thickness of the liquid film in the vicinity of the water discharge hole 433 is the thickness of the liquid film when sprayed from the nozzle body 420 or the liquid immediately after flowing into the throat flow path 431. Thicker than the film thickness.

  Further, the flow rate of the washing water flowing through the throat flow path 431 is faster in the center of the throat flow path 431 than in the vicinity of the inner wall of the throat flow path 431, that is, the boundary layer. Therefore, a vortex flow is generated in the direction of crossing the liquid film in the wash water flowing through the throat flow path 431 as indicated by an arrow A1 shown in FIG. In addition, the throat flow path 431 in the vicinity of the water discharge hole 433 is formed with a taper portion 432 that expands toward the water discharge hole 433, so that the cleaning water sprayed from the water discharge hole 433 is tapered. Flowing along. Therefore, eddy currents are more likely to occur in the direction crossing the liquid film in the wash water ejected from the water discharge holes 433.

  Then, the washing water sprayed from the water discharge hole 433 is sprayed as a liquid film having a hollow portion at the center, that is, as the hollow conical water discharge 510, but the water flow granulated at a position somewhat away from the water discharge hole 433. (Hereinafter referred to as “granulated water flow” for convenience of explanation). More specifically, since a vortex flow is generated in the hollow conical water discharge 510 ejected from the water discharge hole 433 in a direction crossing the liquid film, it is adjacent to the water discharge hole 433 at a certain distance. Cracks occur between the vortex flows. Then, the hollow conical water discharge 510 ejected from the water discharge hole 433 is crushed at a position somewhat away from the water discharge hole 433 as shown in FIG. Thus, the hollow conical water discharge 510 ejected from the water discharge hole 433 transitions to the granulated water flow 520. And the granulated water flow 520 spreads evenly inside the area where the hollow conical water discharge 510 diffuses. Therefore, the washing water can be landed in a wider area of the female local area of the user sitting on the toilet seat 200, and a desired wide area can be quickly washed.

  Here, during menstruation, menstrual blood may continue to emerge from the vaginal opening for a while. In this case, if the washing water sprayed from the nozzle body 420 continues to land near the vaginal opening, menstrual blood flows together with the washing water. However, when the cleaning water sprayed from the nozzle body 420 comes off from the vicinity of the vaginal opening and arrives at the time of the move cleaning, menstrual blood accumulates and adheres to the vicinity of the vaginal opening. Subsequently, when the washing water sprayed from the nozzle body 420 moves and lands again near the vaginal opening where menstrual blood stains are not fixed, the menstrual blood stains may be scattered as the washing water passes.

  On the other hand, the sanitary washing device 100 according to the present embodiment expands the predetermined area 540 of the washing water sprayed from the nozzle body 420 by reciprocating in the front-rear direction while diffusing the washing water in a conical shape. In addition, it is possible to execute wide-moving cleaning in which cleaning water is landed in a wider range before and after the conventional method. Further, as described above with reference to FIG. 3, the constant landing area 551 in which the washing water always reaches while the predetermined area 540 reciprocates in the front-rear direction exists at the center of the landing area 550. For this reason, it is possible to prevent menstrual blood stains that are not firmly fixed in the vicinity of the vaginal opening of the female part from being scattered during wide move bidet washing. In addition, during the wide move bidet cleaning, there is a constant landing area 551 in which the cleaning water always lands in the vicinity of the vaginal opening, so there is little possibility of giving a feeling of being traced. Thereby, comfortable bidet washing can be performed.

Next, a specific example of the operation of the nozzle 410 of this embodiment will be described with reference to the drawings.
FIG. 5 is a graph showing a specific example of the trajectory of the water discharge hole of the nozzle.

  In this specific example, when the predetermined region 540 of the cleaning water reaches the front end and the rear end of the landing region 550, the reciprocating movement of the predetermined region 540 of the cleaning water in the front-rear direction stops for a predetermined time. Specifically, for example, as illustrated in the graph shown in FIG. 5, when the nozzle body 420 or the water discharge hole 411 reaches the front end and the rear end of the movement range, the nozzle driving unit 460 is based on a command from the control unit 405. Thus, the reciprocating movement of the nozzle body 420 in the front-rear direction is stopped.

  According to this specific example, when the predetermined area 540 of the cleaning water is reciprocated in the front-rear direction and enlarged, the cleaning water is supplied to the front landing area 557 and the rear landing area 558 of the landing area 550 for a predetermined time. Can land on the water. For this reason, it is possible to cause a larger amount of washing water to land on the landing front end region 557 and the landing rear end region 558 of the landing region 550. Accordingly, it is possible to make the user feel that the front landing area 557 and the rear landing area 558 that are always positioned in the front-rear direction of the landing area 551 are also washed. Further, it is possible to perform wide move bidet cleaning with higher satisfaction.

This specific example will be further described with reference to the drawings.
FIG. 6 is a conceptual schematic diagram illustrating a notation method of a predetermined region and a landing flow rate.
FIG. 7 is a conceptual schematic diagram showing the relationship between a predetermined region and a landing flow rate in the comparative example.
Moreover, FIG. 8 is a conceptual schematic diagram showing the relationship between the predetermined area and the landing flow rate of this specific example.

First, the description method of a predetermined area | region and a landing water flow is demonstrated, referring FIG.
The upper part of FIG. 6A shows a predetermined area 540 of the cleaning water jetted from the nozzle body 420 in a plan view. The lower diagram in FIG. 6A represents the water arrival flow rate (water arrival amount) in the AA cross section of the predetermined region 540 shown in the upper diagram. That is, the landing flow rate is represented as a width in the height direction (vertical direction in the figure) in the lower diagram of FIG. The same applies to the conceptual schematic diagrams shown in FIGS. 6B and 6C.
In the specification of the present application, “landing flow rate (landing water amount)” refers to the amount of water landed per unit time in a predetermined area such as a female local area.

  As shown in FIG. 6A, the landing flow rate in the predetermined region 541 when reaching the rear end of the landing region 550 is represented as a landing flow rate 571. As shown in FIG. 6B, the landing flow rate in the predetermined region 543 when reaching the center of the landing region 550 is represented as a landing flow rate 573. As shown in FIG. 6C, the landing flow rate in the predetermined region 545 when reaching the front end of the landing region 550 is represented as a landing flow rate 575.

  In the lower diagram of FIG. 6B, for the sake of convenience of explanation, the respective landing flow rates 571 and 573 in the predetermined regions 541 and 543 are shown stacked without being overlapped. In the lower diagram of FIG. 6C, for the sake of convenience of explanation, the respective landing flow rates 571, 573, and 575 in the predetermined regions 541, 543, and 545 are shown stacked without being overlapped.

FIG. 7 shows the relationship between the predetermined area of the comparative example and the landing flow rate based on the notation described above with reference to FIG. That is, the upper part of FIG. 7A and FIG. 7B represents a predetermined region 540 of the cleaning water sprayed from the nozzle body 420 in a plan view. Moreover, the middle figure of Fig.7 (a) and FIG.7 (b) represents the water landing flow in the AA cross section of the predetermined area | region 540 represented to the upper figure. Further, the lower diagrams of FIGS. 7A and 7B show the integrated amount of the landing flow rate in the AA cross section of the predetermined region 540 shown in the upper diagram.
7A shows a case where the reciprocating movement of the predetermined area 540 of the washing water in the front-rear direction starts from the front end of the landing area 550, and FIG. 7B shows the washing water. The case where the reciprocating movement of the predetermined area 540 in the front-rear direction starts from the center of the landing area 550 is shown. 7 (a) and 7 (b), for convenience of explanation and notation, the landing flow rate and the integrated amount of the landing flow rate are shown stepwise, but a predetermined region 540 of the wash water is intermittent. It does not represent the reciprocal movement.

  In this comparative example, the reciprocating movement of the predetermined area 540 of the cleaning water in the front-rear direction has a constant moving speed without being stationary. According to this, as shown in the lower diagrams of FIGS. 7A and 7B, the integral amount 581 of the landing water flow rate in the constantly landing region 551 is the largest. Then, the integral amount of the landing flow rate gradually decreases toward the landing front end region 557 and the landing rear end region 558 of the landing region 550. In this comparative example, since the integral amounts 587 and 588 of the landing flow rate in the landing front end region 557 and the landing rear end region 558 are smaller, the user cleans the landing front end region 557 and the landing landing end region 558. You may not be able to realize that

  On the other hand, in this specific example, as described above with reference to FIG. 5, when the predetermined area 540 of the cleaning water reaches the front end and the rear end of the landing area 550, the predetermined direction 540 of the cleaning water moves in the front-rear direction. The reciprocating movement of is stopped for a predetermined time. Therefore, as shown in FIG. 8, the respective landing flow rates 571 and 575 in the predetermined area 540 when reaching the rear end and the front end of the landing area 550 reach the center of the landing area 550. More than the landing water flow rate 573 in the predetermined region 540. Note that the notation in FIG. 8 is as described above with reference to FIGS.

  Therefore, when the integrated amount of the landing flow shown in FIG. 8 is compared with the integrated amount of the landing flow shown in FIG. 7, the landing in the landing front end region 557 and the landing post-end region 558 of this specific example is compared. The integrated amounts 587 and 588 of the water flow rate are larger than those of the comparative example. In other words, in this specific example, it is possible to cause the flushing water having a flow rate larger than that in the comparative example to land on the landing front end region 557 and the landing rear end region 558 of the landing region 550. Thus, the user can feel that the front landing area 557 and the rear landing area 558 are being washed. Further, it is possible to perform wide move bidet cleaning with higher satisfaction.

FIG. 9 is a graph showing another specific example of the trajectory of the nozzle hole.
FIG. 10 is a conceptual schematic diagram showing the relationship between the predetermined area and the landing flow rate of this specific example.
9A illustrates the case where the moving speed of the nozzle body 420 is changed at a predetermined position, and FIG. 9B illustrates the case where the moving speed of the nozzle body 420 is continuously changed. is doing.

  In this specific example, the moving speed when the predetermined area 540 of the washing water moves in the front landing area 557 and the rear landing area 558 of the landing area 550 is the same as that when the center of the landing area 550 moves. Slower than the moving speed. Specifically, for example, as shown in the graph of FIG. 9A, the nozzle driving unit 460 controls the speed of the reciprocating movement of the nozzle body 420 based on a command from the control unit 405, and the water discharge hole 411. The movement speed of the nozzle body 420 when the washing water sprayed from the water reaches the landing front end area 557 and the landing rear end area 558 is slower than the movement speed when moving the center of the landing area 550. To do.

  In the specific example of the graph shown in FIG. 9A, the nozzle driving unit 460 changes the moving speed of the nozzle body 420 at a predetermined position during movement. However, the present invention is not limited to this, and the nozzle driving unit 460 may continuously change the moving speed of the nozzle body 420 as shown in FIG. 9B.

  According to this specific example, as shown in FIG. 10, the respective landing flow rates 571 and 575 in the predetermined region 540 when reaching the rear end and the front end of the landing region 550 are the center of the landing region 550. More than the landing water flow rate 573 in the predetermined region 540 when reaching the part. Note that the notation in FIG. 10 is as described above with reference to FIGS.

  Therefore, when the integrated amount of the landing flow shown in FIG. 10 is compared with the integrated amount of the landing flow shown in FIG. 7, the landing in the landing front end region 557 and the landing rear end region 558 of this specific example is compared. The integrated amounts 587 and 588 of the water flow rate are larger than those of the comparative example. In other words, in this specific example, it is possible to cause the flushing water having a flow rate larger than that in the comparative example to land on the landing front end region 557 and the landing rear end region 558 of the landing region 550. Alternatively, when the predetermined area 540 of the cleaning water is expanded by reciprocating in the front-rear direction, the nozzle body 420 moves at a constant speed to the front landing area 557 and the rear landing area 558 of the landing area 550. Wash water can be allowed to land for a longer time than the case.

  Accordingly, it is possible to make the user feel that the front landing area 557 and the rear landing area 558 that are always positioned in the front-rear direction of the landing area 551 are also washed. Further, it is possible to perform wide move bidet cleaning with higher satisfaction. In addition, by relatively simple control of changing the moving speed of the nozzle body 420, the washing water can be allowed to land on the landing front end region 557 and the landing rear end region 558 of the landing region 550 for a relatively long time. .

FIG. 11 is a graph showing still another specific example of the trajectory of the nozzle hole.
In this specific example, every time the predetermined area 540 moves to the landing front end area 557 and the landing rear end area 558 of the landing area 550, the washing water in the range of the landing front end area 557 and the landing rear end area 558 is obtained. The predetermined area 540 where the water reaches is reciprocated a plurality of times in the front-back direction. Specifically, for example, as shown in the graph shown in FIG. 11, the nozzle drive unit 460 is configured so that the cleaning water sprayed from the water discharge holes 411 and the landing front end region 557 and the landing are received based on a command from the control unit 405. Each time the nozzle body 420 moves to the water rear end region 558, the nozzle body 420 is reciprocated in the front-rear direction a plurality of times in the range where the water reaches the water landing front end region 557 and the water landing rear end region 558.

  According to this specific example, it is possible to cause the washing water having a flow rate larger than that in the case where the nozzle body 420 is not reciprocated a plurality of times to the landing front end region 557 and the landing rear end region 558 of the landing region 550. . Alternatively, when the predetermined area 540 of the cleaning water is reciprocated in the front-rear direction and enlarged, the nozzle body 420 is not reciprocated a plurality of times in the front landing area 557 and the rear landing area 558 of the landing area 550. Wash water can be allowed to land for a longer time than the case.

  Accordingly, it is possible to make the user feel that the front landing area 557 and the rear landing area 558 that are always positioned in the front-rear direction of the landing area 551 are also washed. Further, it is possible to perform wide move bidet cleaning with higher satisfaction.

FIG. 12 is a graph showing still another specific example of the trajectory of the nozzle hole.
In this specific example, in the landing front end region 557 and the landing rear end region 558 of the landing region 550, the reciprocating movement of the predetermined region 540 of the cleaning water in the front-rear direction stops for a predetermined time. That is, in the specific example described above with reference to FIG. 5, the reciprocating movement of the predetermined area 540 of the cleaning water in the front-rear direction stops at the front end and the rear end of the landing area 550 for a predetermined time. On the other hand, in this specific example, the reciprocating movement of the predetermined region 540 of the cleaning water in the front-rear direction is not limited to the front end and the rear end of the landing region 550, and the landing front end region 557 and the landing rear end. It stops at any position within region 558.

  The reciprocating movement of the predetermined region 540 of the washing water in the front-rear direction is performed while the water landing region is in the middle from the center of the water landing region 550 toward the front end and the rear end, as shown in the graph of FIG. It may be stationary for a predetermined time both on the way from the front end and the rear end of 550 toward the center. Alternatively, the reciprocating movement of the predetermined area 540 of the cleaning water in the front-rear direction is performed for a predetermined time on the way from the front end and the rear end of the water landing area 550 toward the center as shown in the graph of FIG. It may be stationary.

  According to this specific example, as in the specific example described above with reference to FIG. 5, the user always cleans the front landing area 557 and the rear landing area 558 that are positioned in the front-rear direction of the landing area 551. Can make you feel. Further, it is possible to perform wide move bidet cleaning with higher satisfaction.

FIG. 13 is a graph illustrating a specific example of the flow rate.
FIG. 13A illustrates a case where the flow rate is changed stepwise, and FIG. 13B illustrates a case where the flow rate is continuously changed.

In this specific example, the speed of the reciprocating movement of the predetermined area 540 of the cleaning water in the front-rear direction is substantially constant without changing. Further, when the predetermined area 540 of the cleaning water reaches the front end and the rear end of the water landing area 550, the control unit 405 controls the flow rate adjustment valve 480 (see FIG. 2), and the predetermined area 540 of the cleaning water arrives. A larger amount of washing water is sprayed than when moving in the center of the water region 550. Alternatively, when the predetermined region 540 of the washing water moves in the front landing region 557 and the rear landing region 558 of the landing region 550, the control unit 405 controls the flow rate adjustment valve 480 to determine the predetermined amount of washing water. The washing water having a flow rate larger than that when the area 540 moves through the center of the landing area 550 is ejected.
According to this specific example, it is possible to cause the landing water front end region 557 and the landing rear end region 558 of the landing region 550 to be flushed with a larger amount of cleaning water than when the flow rate of the injected cleaning water is not changed. it can. Alternatively, when the predetermined region 540 of the cleaning water is reciprocated in the front-rear direction and enlarged, the flow rate of the cleaning water sprayed to the landing front end region 557 and the landing rear end region 558 of the landing region 550 is changed. Washing water can be allowed to land for a longer time than if not. As a result, the same effect as described above with reference to FIG. 5 can be obtained.

FIG. 14 is a graph illustrating a specific example of the flow velocity.
FIG. 14A illustrates a case where the flow velocity is changed stepwise, and FIG. 14B illustrates a case where the flow velocity is continuously changed.

In this specific example, as in the specific example described above with reference to FIG. 13, the speed of the reciprocating movement of the predetermined region 540 of the cleaning water in the front-rear direction is substantially constant without changing. When the predetermined area 540 of the cleaning water reaches the front end and the rear end of the landing area 550, the control unit 405 controls the flow rate adjustment valve 480 so that the predetermined area 540 of the cleaning water is the center of the landing area 550. The washing water having a flow rate faster than that when moving the part is jetted. Alternatively, when the predetermined region 540 of the washing water moves in the front landing region 557 and the rear landing region 558 of the landing region 550, the control unit 405 controls the flow rate adjustment valve 480 to determine the predetermined amount of washing water. The washing water having a flow rate faster than that when the area 540 moves in the center of the landing area 550 is jetted.
According to this specific example, flush water having a higher flow rate than that in the case where the flow rate of the injected wash water is not changed is landed on the front landing region 557 and the rear landing region 558 of the landing region 550. Can do. Alternatively, when the predetermined area 540 of the washing water is reciprocated in the front-rear direction and enlarged, the flow speed of the washing water injected into the landing front end area 557 and the landing rear end area 558 of the landing area 550 is changed. Washing water can be allowed to land for a longer time than if not. As a result, the same effect as described above with reference to FIG. 5 can be obtained.

Next, a specific example of the nozzle 410 of this embodiment will be described with reference to the drawings.
FIG. 15 is a schematic perspective view illustrating a specific example of the nozzle of this embodiment.
FIG. 16 is a schematic top view of the nozzle of this example as viewed from above.
FIG. 17 is a schematic cross-sectional view taken along a cutting plane BB shown in FIG.

  The nozzle 410 according to this specific example includes a nozzle body 420. Inside the nozzle body 420, a wide water discharge channel 427 and a spot water discharge channel 428 are provided. As shown in FIG. 16, the wide water discharge channel 427 is connected in the tangential direction of the large-diameter inner peripheral wall 423 e of the swirl chamber 423. On the other hand, as shown in FIG. 16, the spot water discharge channel 428 is connected to the large-diameter inner peripheral wall 423 e so as to go to the axial center of the swirl chamber 423. Other structures are the same as those of the nozzle 410 described above with reference to FIG.

  Since the wide water discharge channel 427 is connected in the tangential direction of the large-diameter inner peripheral wall 423e of the swirl chamber 423, the wash water that has flowed into the swirl chamber 423 through the wide water discharge channel 427 is contained in the large-diameter portion. It turns along the peripheral wall 423e and the inclined inner peripheral wall 423f. This is as described above with reference to FIG. On the other hand, since the spot water discharge channel 428 is connected to the large-diameter inner peripheral wall 423e so as to be directed to the axial center of the swirl chamber 423, the wash water that has flowed into the swirl chamber 423 through the spot water discharge channel 428. Is ejected from one end of the communication path 425, that is, the water discharge hole 426 without turning.

  Therefore, according to the nozzle 410 of this specific example, when the cleaning water flows into the swirl chamber 423 only through the wide water discharge channel 427, the hollow conical water discharge 510 having a larger swirl force is discharged from the water discharge hole 426. can do. When the nozzle 410 according to this specific example has the throat 430 shown in FIG. 4, the hollow conical water discharge 510 injected from the water discharge hole 433 transitions to the granulated water flow 520. Therefore, in this case, the user can quickly clean a wider area at a time.

  On the other hand, when the cleaning water is introduced into the swirl chamber 423 not only through the wide water discharge channel 427 but also through the wide water discharge channel 427 and the spot water discharge channel 428, a swirl flow generated in the swirl chamber 423. The swirl force is reduced as compared with the case where the washing water flows into the swirl chamber 423 only through the wide water discharge channel 427. This is because the swirling flow caused by the wash water flowing into the swirl chamber 423 from the wide water discharge flow path 427 interferes with the straight flow caused by the wash water flowing into the swirl chamber 423 from the spot water discharge flow path 428. Therefore, in this case, the hollow conical water discharge 510 having a smaller swirl force than that in the case where the washing water is made to flow into the swirl chamber 423 only through the wide water discharge channel 427 is jetted from the water discharge hole 426.

  On the other hand, when the washing water is allowed to flow into the swirl chamber 423 only through the spot water discharge channel 428, the straight flow and the liquid droplets can be discharged from the water discharge hole 426. Therefore, in this case, the user can intensively clean the portion to be cleaned as desired.

  According to the nozzle 410 according to this specific example, the user appropriately sets the ratio between the flow rate of the wash water that passes through the wide water discharge channel 427 and the flow rate of the wash water that passes through the spot water discharge channel 428. By changing, it is possible to switch between wide water discharge for cleaning a wider range at once and spot water discharge for cleaning a narrower range according to preference.

  As described above, according to the present embodiment, the predetermined area 540 of the cleaning water sprayed from the nozzle body 420 is reciprocated in the front-rear direction and expanded while diffusing the cleaning water in a conical shape. Also, it is possible to perform wide-moving cleaning that irrigates the cleaning water in a wide range before and after. Further, at the center of the water landing area 550, there is a constant water landing area 551 where the washing water always reaches while the predetermined area 540 reciprocates in the front-rear direction. For this reason, it is possible to prevent menstrual blood stains that are not firmly fixed in the vicinity of the vaginal opening of the female part from being scattered during wide move bidet washing. In addition, during the wide move bidet cleaning, there is a constant landing area 551 in which the cleaning water always lands in the vicinity of the vaginal opening, so there is little possibility of giving a feeling of being traced. Thereby, comfortable bidet washing can be performed.

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, size, material, arrangement, and the like of each element included in the nozzle 410 and the like are not limited to those illustrated, and can be changed as appropriate.
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 channel, 100 sanitary washing device, 200 toilet seat, 300 toilet lid, 400 casing, 404 seating detection sensor, 405 control unit, 410 nozzle, 411 water discharge hole, 420 nozzle body, 423 swirl chamber, 423e large-diameter inner peripheral wall, 423f Inclined inner peripheral wall, 424 projecting portion, 425 communication passage, 426 water discharge hole, 427 wide water discharge flow channel, 428 spot water discharge flow channel, 430 throat, 431 throat flow channel, 432 taper portion, 433 water discharge hole, 440 solenoid valve , 450 heat exchanger, 460 nozzle drive unit, 470 pressure modulator, 480 flow rate adjustment valve, 510 hollow conical water discharge, 520 granulated water flow, 540, 541, 543, 545 predetermined area, 550 water landing area, 551 constantly Landing area, 553, 554 Middle area of landing, 57 landing front end region, 558 landing area behind, 571,573,575 splashdown flow, 581,587,588 landing integral quantity of flow, 800 the toilet, 801 bowl

Claims (7)

A nozzle having water discharge holes, and spraying wash water from the water discharge holes to land the female local area;
The nozzle is
Water discharge means for spraying the washing water so as to diffuse in a conical shape from the water discharge holes and landing on a predetermined region of the female local area;
Washing area front-rear enlargement means for forming a landing area where the washing water can be landed, which is an area larger than the predetermined area by reciprocating the predetermined area in the front-rear direction;
Have
The cleaning area front and rear enlargement means forms a constant water landing area where the washing water always lands during the reciprocating movement of the predetermined area in the front and rear direction at the center of the water landing area. apparatus.   The sanitary washing apparatus according to claim 1, wherein the front and rear enlargement means for the washing area stops the reciprocating movement for a predetermined time when the predetermined area reaches the front end and the rear end of the water landing area.   The cleaning area front and rear enlargement means is configured to move the predetermined area when the predetermined area moves through a front landing area that is a front end area of the landing area and a rear end area that is a rear end area of the landing area. The sanitary washing apparatus according to claim 1, wherein the moving speed of the area is made slower than the moving speed of the predetermined area when the predetermined area moves in the center of the water landing area. The cleaning area front and rear enlargement means includes:
A nozzle drive section for moving the water discharge means in the front-rear direction;
A control unit that reciprocates the water discharging means in the front-rear direction by controlling the nozzle driving unit;
Have
The control unit is configured to change a moving speed of the water discharging means when the predetermined area moves in the landing front end area and the landing rear end area, and the predetermined area moves in a central part of the landing area. 4. The sanitary washing device according to claim 3, wherein control is performed to make the speed slower than the moving speed of the water discharging means.   The front and rear enlargement means for the cleaning area includes a front landing area that is a front end area of the landing area and a landing end area that is a rear end area that is the rear end area of the landing area. The sanitary washing apparatus according to claim 1, wherein the predetermined area is reciprocated in the front-rear direction a plurality of times in the range of the water front end area and the water landing rear end area.   When the predetermined area reaches the front end and the rear end of the water landing area, the cleaning area front and rear enlargement means is configured to supply cleaning water having a larger flow rate than when the predetermined area moves in the center of the water landing area. The sanitary washing device according to claim 1, wherein the water is sprayed from the water discharge hole.   When the predetermined area reaches the front end and the rear end of the water landing area, the front and rear enlargement means of the cleaning area supplies cleaning water having a flow rate faster than that when the predetermined area moves in the center of the water landing area. The sanitary washing device according to claim 1, wherein the water is sprayed from the water discharge hole.

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