JP2018119361A - Sanitary washing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sanitary washing device that makes a water pressure-type washing nozzle move in a reciprocating motion and realizes both wide-range private body part washing in a front-rear direction over an area where stain tends to adhere, and long-term wide-range private body part washing in the front-rear direction by suppressing catching of a waste by the water pressure-type washing nozzle.SOLUTION: A sanitary washing device includes a private body part washing unit that has washing nozzle reciprocating motion means with: a water pressure-type washing nozzle of which a nozzle body is protruded from a cylinder by water pressure supplied to the nozzle body that discharges water; a water wheel that converts water fluid energy into a rotary motion in a direction; and a motion direction conversion mechanism that converts the rotary motion in the direction output from the water wheel into a reciprocally translational motion. The water pressure-type washing nozzle is supported rotatably in a vertical direction, and discharges water from a water discharge port while being rotated by the reciprocally translational motion output by the motion direction conversion mechanism.SELECTED DRAWING: Figure 2

Description

  Aspects of the invention generally relate to a sanitary washing apparatus.

  Conventionally, a nozzle body provided with a water discharge port at the tip is housed in a cylinder in a state of being biased in a backward direction by a spring force, and the so-called type in which the nozzle body is advanced by the pressure of washing water flowing into the cylinder. A sanitary washing device provided with a “hydraulic washing nozzle” and mounted on a flush toilet is known (for example, Patent Document 1).

  Furthermore, the sanitary washing device described in Patent Document 1 includes a washing unit drive device that reciprocates the hydraulic cleaning nozzle in the front-rear direction using water pressure as a driving source, thereby reciprocating the hydraulic cleaning nozzle back and forth. A wide range of cleaning is performed in the front-rear direction and the position of the hydraulic cleaning nozzle is adjusted.

  Such a sanitary washing apparatus is installed in a toilet room or a hotel unit bath or the like in which an AC power outlet is not provided on a wall surface or the like.

  In addition, in such a sanitary washing device, the water discharged from the spout is required to be warm because it reaches the human body, but in a house with a central hot water supply or in a high temperature area Since the water supplied to the sanitary washing apparatus itself is warm water, the sanitary washing apparatus may not have a heater for heating.

JP 2002-266408 A

  In the sanitary washing apparatus described above, the water supplied from the water supply source is divided into the local washing and the back-and-forth reciprocating movement of the hydraulic washing nozzle, and the water supplied to the hydraulic washing nozzle in order to wash the local area firmly. As much as possible, it is necessary to use the water supplied from the water supply source efficiently.

  However, in the sanitary washing apparatus described above, the water used for the back-and-forth reciprocating motion of the hydraulic washing nozzle is drained to the toilet, and there is room for further improvement in order to increase the amount of water supplied to the hydraulic washing nozzle as much as possible. is there.

  Further, the above-described cleaning unit driving device of the sanitary cleaning device causes the hydraulic cleaning nozzle to reciprocate back and forth as the driving piston moves forward or backward in the driving cylinder. However, since the gap between the driving cylinder and the driving piston is narrow, foreign matter enters the cleaning unit driving device and enters the gap (so-called “garbage biting”). There is a possibility that it will not move, and there is room for further improvement in the extensive cleaning in the front-rear direction by the hydraulic cleaning nozzle.

  Therefore, the present invention solves the problems of the prior art as described above, that is, the object of the present invention is to perform sanitary cleaning that performs extensive cleaning in the front-rear direction by reciprocating a hydraulic cleaning nozzle. In the apparatus, a wide range of local cleaning with respect to the front-rear direction in which dirt easily adheres and a long-term local cleaning in the front-rear direction by suppressing dust biting of the hydraulic cleaning nozzle are achieved.

  1st invention has the nozzle main body which has a water discharge port which discharges the water supplied from a water supply source as local washing water, and the cylinder which stores this nozzle main body, The above-mentioned by the water pressure supplied to the nozzle main body A local cleaning unit comprising: a hydraulic cleaning nozzle that moves a nozzle body out of the cylinder; and a cleaning nozzle reciprocating means that reciprocates the hydraulic cleaning nozzle using fluid energy of water supplied from the water supply source. The cleaning nozzle reciprocating means includes a water wheel for converting the fluid energy of water supplied from the water supply source into a one-way rotational movement, and a one-way output from the water wheel. A direction-of-motion converting mechanism that converts rotational motion into reciprocating translational motion, and the hydraulic cleaning nozzle rotates vertically and horizontally with respect to the direction in which the nozzle body extends. The water passing through the water wheel is rotated from the spout while rotating about the rotation axis by the reciprocating translation output from the movement direction conversion mechanism. This is a sanitary washing device characterized by discharging water.

According to the sanitary washing device of the first invention, the washing nozzle reciprocating means includes a water wheel that converts the fluid energy of the water supplied from the water supply source into one-way rotational movement, thereby providing a simple structure. The fluid energy can be converted into rotational motion with this, and there is no need to provide a narrow channel, so it is possible to avoid a situation where foreign substances enter the narrow channel and the cleaning nozzle reciprocating means does not function. A wide range of cleaning in the front-rear direction can be realized over a long period of time.
In general, in the sanitary washing apparatus, it is difficult to accommodate a large part in the interior because of the fact that the volume of the internal space is not large and the convenience of the other parts. For this reason, it is difficult to accommodate a water turbine that directly generates the torque necessary for reciprocating translation of the hydraulic cleaning nozzle. Furthermore, the water pressure supplied to the sanitary washing apparatus is determined, and it is difficult to directly generate the torque necessary for reciprocating translation of the hydraulic washing nozzle with the water pressure within the range.
Therefore, the cleaning nozzle reciprocating means is provided with a motion direction converting mechanism that converts the one-way rotational motion output from the water wheel into a reciprocating translational motion, and the hydraulic cleaning nozzle is rotatably supported and the motion direction changed. By rotating around the rotation axis by the reciprocating translation output from the mechanism, the motion direction conversion mechanism is compared with the torque when the hydraulic cleaning nozzle is directly reciprocated by the torque output from the water turbine. The torque when the hydraulic cleaning nozzle is reciprocatingly rotated can be set smaller, so even if the output turbine has a small output torque, the hydraulic cleaning nozzle is reliably reciprocatingly rotated to prevent contamination. It is possible to realize a wide range of local cleaning in the front-rear direction that is likely to adhere.
In addition, since the small turbine has a small inertia torque, even if the water supply source has a low water pressure, the hydraulic cleaning nozzle can be reliably reciprocally rotated by using the small turbine.

  A second invention is the sanitary washing apparatus according to the first invention, wherein the washing nozzle reciprocating means further includes a casing for housing the water wheel, and the casing is watertight.

  According to the sanitary washing device of the second invention, in addition to the effects of the first invention, the casing is watertight, so that water for turning the turbine does not leak from the casing. Water supplied from the water source can be used for the rotational movement of the hydraulic cleaning nozzle without waste.

  According to a third invention, in the second invention, the cleaning nozzle reciprocating means further comprises a hose for fluidly communicating an outlet formed in the casing and an inlet of the hydraulic cleaning nozzle, The rotational torque due to the restoring force against bending acts in the opposite direction to the torque of the greater weight of the hydraulic cleaning nozzle due to its own weight or the larger reaction force torque due to the water discharge reaction force acting on the hydraulic cleaning nozzle. This is a sanitary washing device.

According to the sanitary washing device according to the third invention, in addition to the effect exhibited by the second invention, the washing nozzle reciprocating means fluidly communicates the outlet formed in the casing and the inlet of the hydraulic washing nozzle. Since the hose is further provided, water does not leak outside between the casing and the hydraulic cleaning nozzle, so the water supplied from the water supply source should be used for the rotational movement of the hydraulic cleaning nozzle without waste. Can do.
Furthermore, the rotational torque due to the restoring force against the bending of the hose acts in the opposite direction to the torque of the greater weight of the hydraulic washing nozzle due to its own weight or the larger reaction force torque due to the water discharge reaction force acting on the hydraulic washing nozzle. Rotational torque compensates for the torque bias acting on the hydraulic cleaning nozzle due to its own weight torque and reaction force torque, so the influence of the own weight torque and reaction torque acting on the hydraulic cleaning nozzle is suppressed, and the output torque is reduced. Even in the case of a torque water wheel, the hydraulic cleaning nozzle can be reciprocally rotated.

  According to a fourth aspect of the present invention, in the first or second aspect, a self-weight torque due to the weight of the hydraulic cleaning nozzle and a reaction force torque due to a water discharge reaction force acting on the hydraulic cleaning nozzle are obtained from the hydraulic cleaning nozzle. The sanitary washing apparatus is characterized in that the magnitude relationship between the self-weight torque and the reaction torque is switched according to the water pressure flowing into the hydraulic washing nozzle, relative to the rotating shaft.

  According to the sanitary washing device of the fourth invention, in addition to the effects of the second invention, the self-weight torque and the reaction torque are opposed to the rotation shaft of the hydraulic washing nozzle, and the hydraulic washing nozzle Compared to the case where the self-weight torque and the reaction force torque act on the same side with respect to the rotating shaft of the hydraulic cleaning nozzle by switching the magnitude relationship between the self-weight torque and the reaction torque according to the water pressure flowing into the water. Since the total torque around the rotating shaft acting on the hydraulic cleaning nozzle is reduced, the torque generated by the cleaning nozzle reciprocating means necessary for reciprocating the hydraulic cleaning nozzle can be reduced.

  According to a fifth invention, in any one of the first to fourth inventions, the movement direction conversion mechanism is configured by a cam and a follower in contact with the cam, and the hydraulic cleaning nozzle has the follower. This is a sanitary washing device.

  According to the sanitary washing device of the fifth invention, in addition to the effect produced by any one of the first to fourth inventions, the movement direction changing mechanism is constituted by a cam and a follower in contact with the cam. When the rotary cleaning nozzle has a follower, the sliding resistance that can be generated when the rotational motion generated by the fluid energy of the water supplied from the water supply source is converted into the reciprocating rotational motion of the hydraulic cleaning nozzle is, for example, Since only the sliding resistance generated between the cam and follower is used and the energy loss factor is minimized, the energy required for the reciprocating rotation of the hydraulic cleaning nozzle is increased from the fluid energy of the water supplied from the water supply source. It becomes possible to take out efficiently, and the energy which can be used for local cleaning can be increased.

  According to a sixth aspect, in the fifth aspect, a speed reducer is disposed between the water wheel and the cam to decelerate the rotation of the water wheel so that the rotation speed of the cam is smaller than the rotation speed of the water wheel. The sanitary washing device is characterized in that the cam rotates together with the speed reducer.

  According to the sanitary washing device pertaining to the sixth invention, in addition to the effects exhibited by the fifth invention, the rotation of the water wheel is decelerated between the water wheel and the cam to make the rotation speed of the cam smaller than the rotation speed of the water wheel. Since the reduction gear is installed and the cam rotates together with the reduction gear, the torque produced by the cam is greater than the torque produced by the water turbine, eliminating the need for the turbine to output high torque, The hydraulic cleaning nozzle can be reliably reciprocated in the vertical direction while downsizing.

  A seventh aspect of the present invention is the sanitary washing apparatus according to the sixth aspect, wherein the casing houses the speed reducer, and a seal structure is formed at a connection portion between the cam and the speed reducer. is there.

  According to the sanitary washing device pertaining to the seventh invention, in addition to the effects exhibited by the sixth invention, the casing houses the speed reducer, and the seal structure is formed at the connecting portion between the cam and the speed reducer. Since the seal structure is formed after the rotational torque generated by the water wheel is increased by the speed reducer, both the water tightness by the seal structure and the sliding performance of the connecting part can be achieved, and the water tightness is ensured. In addition, it is possible to realize a wide range of local cleaning in the front-rear direction by reciprocatingly rotating the hydraulic cleaning nozzle.

  An eighth invention is the sanitary washing device according to the sixth or seventh invention, wherein the speed reducer is a gear.

  According to the sanitary washing device according to the eighth invention, in addition to the effects exhibited by the sixth or seventh invention, since the speed reducer is a gear, it is a member as compared with the case where, for example, a pulley or a chain is used as the speed reducer. Since the number can be reduced, the speed reducer can be miniaturized, and the sanitary washing apparatus itself can be miniaturized.

  According to a ninth invention, in any one of the sixth to eighth inventions, the water wheel rotates about a central axis extending from the speed reducer, and a gap is provided between the water wheel and the central axis. It is the sanitary washing apparatus characterized by being formed.

  According to the sanitary washing device of the ninth invention, in addition to the effects exhibited by any one of the sixth to eighth inventions, the water turbine rotates about the central axis extending from the speed reducer. Since the gap is formed between the shafts, the water wheel and the central shaft are in a fluid lubrication state by filling the gap with water, so that, for example, a high rotation state of 1000 revolutions per minute or more is achieved. The water turbine is prevented from coming into contact with the central shaft, and the water turbine or the central shaft is prevented from being worn, and the durability of the reciprocating motion of the cleaning nozzle is increased. Can be made.

  A tenth aspect of the present invention is the sanitary washing apparatus according to any one of the fifth to ninth aspects, wherein the rotational direction of the cam is the same as the rotational direction of the water wheel.

  According to the sanitary washing device of the tenth invention, in addition to the effects exhibited by any one of the fifth to ninth inventions, the cam rotation direction is the same as the water wheel rotation direction, so that Since the sliding resistance is reduced, the fluid energy of the water supplied from the water supply source can be efficiently used for the rotational movement of the hydraulic cleaning nozzle, and the rotation direction of the cam and the rotation direction of the water turbine are different. As compared with the above, since the rotational speed of the cam relative to the water wheel decreases, the durability of the water wheel and the cam can be increased.

  An eleventh aspect of the present invention is the sanitary washing apparatus according to any one of the fifth to tenth aspects, wherein a follower of the hydraulic washing nozzle is in contact with the cam on a vertically upper side of the cam. It is.

  According to the sanitary washing device pertaining to the eleventh invention, in addition to the effects exhibited by any one of the fifth to tenth inventions, the follower of the hydraulic washing nozzle is in contact with the cam vertically above the cam. As a result, when the pressure of water supplied to the water turbine is higher than the reference water pressure, the pressure of water supplied to the hydraulic cleaning nozzle also increases, so the reaction torque applied to the hydraulic cleaning nozzle also increases and the follower cams Get away from. This stops the reciprocating rotational movement of the hydraulic cleaning nozzle. That is, the local cleaning can be switched between wide-area cleaning and single-point cleaning by reciprocating rotational movement of the hydraulic cleaning nozzle according to the water pressure supplied to the hydraulic cleaning nozzle.

  A twelfth aspect of the invention is the sanitary washing apparatus according to any one of the fifth to tenth aspects of the invention, wherein a follower of the hydraulic washing nozzle is in contact with the cam on a vertically lower side of the cam. It is.

According to the sanitary washing device of the twelfth invention, in addition to the effect produced by any one of the fifth to tenth inventions, the follower of the hydraulic washing nozzle is in contact with the cam on the vertical lower side of the cam. Thus, when the pressure of the water supplied to the water turbine is higher than the reference water pressure, the rotation speed of the water wheel increases and the rotation speed of the cam increases, while the pressure of the water supplied to the hydraulic cleaning nozzle also increases. The reaction torque applied to the hydraulic cleaning nozzle also increases, the contact force between the cam and the follower increases, the sliding resistance between the cam and the follower increases, and the hydraulic cleaning nozzle becomes difficult to rotate. .
On the other hand, when the pressure of water supplied to the water turbine is lower than the reference water pressure, the rotation speed of the water wheel decreases and the rotation speed of the cam decreases, while the pressure of water supplied to the hydraulic cleaning nozzle also decreases. The reaction torque applied to the hydraulic cleaning nozzle is also reduced, the contact force between the cam and the follower is reduced, the sliding resistance between the cam and the follower is reduced, and the hydraulic cleaning nozzle is easily rotated. .
That is, the ease of rotation of the hydraulic cleaning nozzle changes in conjunction with the magnitude of the pressure of the water supplied to the water turbine, so the hydraulic cleaning nozzle of the hydraulic cleaning nozzle is independent of the pressure of the water supplied to the sanitary cleaning device. Variations in rotational speed can be suppressed.

  A thirteenth aspect of the present invention is the sanitary washing apparatus according to any one of the fifth to twelfth aspects, wherein a stopper is formed at a position facing the follower via the cam.

  According to the sanitary washing device of the thirteenth invention, in addition to the effects exhibited by any one of the fifth to twelfth inventions, the stopper is formed at a position facing the follower via the cam. Since the cam contacts the stopper when the reaction torque applied to the cleaning nozzle greatly fluctuates, the possibility of the hydraulic cleaning nozzle jumping up due to fluctuations in the pressure of the water supplied to the sanitary cleaning device is suppressed, and the cleaning position shifts. Can be suppressed.

  According to the aspect of the present invention, in a sanitary washing apparatus that performs extensive cleaning in the front-rear direction by reciprocating the hydraulic cleaning nozzle, a wide range of local cleaning in the front-rear direction in which dirt easily adheres, and hydraulic cleaning There is provided a sanitary washing device capable of achieving both a wide range of local washing in the longitudinal direction for a long period of time by suppressing dust biting of the nozzle.

It is a perspective view which illustrates the toilet apparatus provided with the sanitary washing toilet seat which concerns on embodiment. It is a block diagram which illustrates the sanitary washing toilet seat concerning an embodiment. It is a perspective view which illustrates the local washing unit of the sanitary washing toilet seat concerning an embodiment. FIG. 4A to FIG. 4C are cross-sectional views illustrating the operation of the hydraulic cleaning nozzle. It is a perspective view which illustrates the nozzle drive unit of the sanitary washing toilet seat concerning an embodiment. It is the top view which looked at the nozzle drive unit of the sanitary washing toilet seat concerning an embodiment from the upper part. It is the top view which looked at the nozzle drive unit of the sanitary washing toilet seat which concerns on embodiment from the side. FIG. 8A to FIG. 8C are side views illustrating the operation of the local cleaning unit of the sanitary cleaning toilet seat according to the embodiment. FIG. 9A and FIG. 9B are side views illustrating the operation of the local cleaning unit of the sanitary cleaning toilet seat according to the embodiment. FIG. 10A and FIG. 10B are side views illustrating a part of the local cleaning unit of the sanitary cleaning toilet seat according to the embodiment. FIG. 11A and FIG. 11B are side views illustrating a part of a local cleaning unit of a sanitary cleaning toilet seat according to a modification of the embodiment.

  Embodiments of the present invention will be described below with reference to the drawings. In addition, in each drawing, the same code | symbol is attached | subjected to the same component and detailed description is abbreviate | omitted suitably.

FIG. 1 is a perspective view illustrating a toilet apparatus provided with a sanitary washing toilet seat according to the embodiment.
As shown in FIG. 1, the toilet apparatus 200 includes a sanitary washing toilet seat (sanitary washing apparatus) 100 and a toilet bowl 150. The sanitary washing toilet seat 100 is provided on the toilet bowl 150. The toilet 150 is, for example, a Western-style sitting toilet and has a bowl 151 that receives the excrement of the user.

The sanitary washing toilet seat 100 includes a local washing unit 101, an outer member 201, a toilet seat 202, and a toilet lid 203.
The local cleaning unit 101 has a hydraulic cleaning nozzle 10 and is accommodated in the outer member 201. The hydraulic washing nozzle 10 has, for example, a water discharge port 10a at its tip, and when used, as shown in FIG. 1, advances to the bowl 151 and directs from the water discharge port 10a to a local body part (for example, “buttock” or female part). Then drain the wash water. The toilet seat 202 is pivotally supported with respect to the outer member 201 so as to be rotatable. The toilet lid 203 is pivotally supported with respect to the outer member 201 and can cover the toilet seat 202.

  In the description of the embodiment, the forward direction as viewed from the user sitting on the toilet seat 202 is referred to as “front”, and the direction opposite to the front is referred to as “rear”.

FIG. 2 is a block diagram illustrating a sanitary washing toilet seat according to the embodiment.
As shown in FIG. 2, water is supplied to the local cleaning unit 101 from a water supply source (such as a water pipe) 204 via a stop cock 205 and an on-off valve 206. An arrow connecting the blocks represents a flow path of the water supplied from the water supply source. Further, the local cleaning unit 101 includes a cleaning nozzle reciprocating means (cleaning nozzle reciprocating section) 20 in addition to the hydraulic cleaning nozzle 10 described above. The cleaning nozzle reciprocating means 20 includes a water wheel 23, a motion direction conversion mechanism 25, and the like, and reciprocates the hydraulic cleaning nozzle 10 using the fluid energy of water supplied from the water supply source 204. The reciprocating motion by the water wheel 23 and the motion direction conversion mechanism 25 will be described later.

FIG. 3 is a perspective view illustrating a local cleaning unit of the sanitary cleaning toilet seat according to the embodiment.
The hydraulic cleaning nozzle 10 includes a nozzle body 11 provided with a water discharge port 10 a and a cylinder 12 that houses the nozzle body 11. The cylinder 12 has an inlet 12a provided at the rear thereof.

  The hydraulic cleaning nozzle 10 is sandwiched by a support portion that is directly or indirectly fixed to the outer member 201, and is rotatable up and down around a rotation axis Ax1 provided in the cylinder 12. It is supported by. Accordingly, the hydraulic cleaning nozzle 10 can be rotated as indicated by an arrow A1 shown in FIG. The rotation axis Ax1 extends along a direction D2 that is perpendicular and horizontal to the direction D1 in which the nozzle body 11 extends linearly. For example, the rotation axis Ax1 is parallel to the horizontal direction D2.

  The local cleaning unit 101 has a nozzle driving unit 30 attached to the cylinder 12. A part of the washing nozzle reciprocating means 20 (such as the water wheel 23) is provided as a part of the nozzle driving unit 30.

  The cleaning nozzle reciprocating means 20 has a casing 31 provided with an inlet 31a and an outlet 31b. As indicated by an arrow A2 in FIG. 3, the water supplied from the water supply source 204 flows into the casing 31 from the inflow port 31a. The water that has flowed into the casing 31 flows out from the outlet 31b as indicated by an arrow A3.

  The cleaning nozzle reciprocating means 20 includes a hose 40 that fluidly communicates the outlet 31 b formed in the casing 31 and the inlet 12 a formed in the hydraulic cleaning nozzle 10. As a result, the water flowing out of the casing 31 is guided to the hose 40 and supplied to the hydraulic cleaning nozzle 10 from the inlet 12a of the hydraulic cleaning nozzle 10 as shown by an arrow A4 in FIG. Since the hose 40 does not leak water between the casing 31 and the hydraulic cleaning nozzle 10, the water supplied from the water supply source 204 can be used for the rotational movement of the hydraulic cleaning nozzle 10 without waste. it can. In FIG. 3, a part of the local cleaning unit 101 is disassembled and displayed for easy viewing.

FIG. 4A to FIG. 4C are cross-sectional views illustrating the operation of the hydraulic cleaning nozzle.
FIG. 4A shows a state (standby state) when the hydraulic cleaning nozzle 10 is not used. At this time, water is not supplied to the hydraulic cleaning nozzle 10. As shown in FIG. 4A, the nozzle body 11 is housed in the cylinder 12 in the standby state.

  The nozzle body 11 is urged rearward by a spring 13 provided inside the cylinder 12. The nozzle body 11 has a cylindrical portion 11a and a closing portion 11e provided at the rear end. In the standby state, the flow path 11b in the cylindrical portion 11a is closed by the closing portion 11e.

  FIG. 4B shows a state when water starts to flow into the inflow port 12a. Water flows into the cylinder 12 and is supplied toward the nozzle body 11. Due to the water pressure, the nozzle body 11 advances forward from the cylinder 12 (inside the bowl 151 of the toilet bowl 150) as shown in FIG. At this time, the flow path 11b of the cylindrical part 11a remains closed by the closing part 11e.

  FIG. 4C shows a state where water further flows into the inflow port 12a and the nozzle body 11 has advanced further forward (water discharge state). At this time, a gap is formed between the cylindrical portion 11a and the closing portion 11e, and water flows into the flow path 11b. Thereby, the spout 10a provided near the front-end | tip of the cylindrical part 11a spouts the supplied water as local washing water. When the inflow of water from the inflow port 12a stops, the water pressure in the hydraulic cleaning nozzle decreases, the urging force of the spring 13 becomes dominant, and the standby state shown in FIG.

FIG. 5 is a perspective view illustrating a nozzle drive unit of the sanitary washing toilet seat according to the embodiment. Drawing 6 is a top view which looked at the nozzle drive unit of the sanitary washing toilet seat concerning an embodiment from the upper part.
Drawing 7 is a top view which looked at the nozzle drive unit of the sanitary washing toilet seat concerning an embodiment from the side.
As shown in FIGS. 5 to 7, the casing 31 of the nozzle drive unit 30 accommodates the water wheel 23. 5-7, the casing 31 is shown with the dashed-two dotted line, and the inside is displayed.

  The water that has flowed into the casing 31 from the inlet 31 a hits the wings of the water turbine 23 and flows out of the casing 31 from the outlet 31 b. As a result, the water wheel 23 rotates around the central axis Ax2. That is, the water wheel 23 converts the fluid energy supplied from the water supply source 204 into a unidirectional rotational motion. In the example shown in FIG. 5, the water wheel 23 converts the fluid energy into a rotational motion in the counterclockwise direction D3.

  In this example, the central axis Ax2 around which the water wheel 23 rotates is perpendicular to the direction in which the wings of the water wheel 23 receive water. However, in the embodiment, any reaction water turbine may be used as long as the fluid energy can be converted into rotational motion in one direction. For example, it may be an axial flow turbine such as a propeller turbine whose central axis of rotation is parallel to the direction of receiving water.

  The rotation of the water wheel 23 is transmitted to the movement direction conversion mechanism 25. In this example, the motion direction conversion mechanism 25 has a cam (disk cam) 25a, and the rotation of the water wheel 23 is transmitted to the cam 25a. In this example, the rotating shaft of the cam 25a is eccentric from the center of the cam 25a.

FIG. 8A to FIG. 8C are side views illustrating the operation of the local cleaning unit of the sanitary cleaning toilet seat according to the embodiment.
FIG. 8A shows a part of the local cleaning unit 101 in the standby state. The movement direction conversion mechanism 25 includes a follower 25b in addition to the cam 25a described above. The follower 25b is in contact with the outer periphery of the cam 25a and has, for example, a plate shape. The position of the follower 25b is fixed relative to the cylinder 12. In this example, the follower 25 b is formed integrally with the cylinder 12 by resin and is provided at the rear portion of the hydraulic cleaning nozzle 10. In the direction in which the hydraulic cleaning nozzle 10 extends, the rotation axis Ax1 is located between the water outlet 10a and the follower 25b.

  FIG. 8B and FIG. 8C show a part of the local cleaning unit 101 in the water discharge state. At this time, the nozzle body 11 advances forward from the cylinder 12 and discharges cleaning water. At the same time, since the water is also supplied to the nozzle drive unit 30, the cam 25a is rotating.

  The rotational movement of the cam 25a is transmitted to the follower 25b that contacts the cam 25a. FIG. 8B shows a state in which the follower 25b is pushed downward by the rotation of the cam 25a. FIG. 8C shows a state in which the cam 25a has rotated 180 ° from the state of FIG. 8B, and the follower 25b is positioned above the state of FIG. 8B. While the cam 25a continues to rotate, the state of FIG. 8B and the state of FIG. 8C are alternately repeated. Thus, the follower 25b performs a reciprocating motion including a translation component in the vertical direction (vertical direction). That is, the motion direction conversion mechanism 25 (in this example, the cam 25a and the follower 25b) converts the rotational motion in one direction output from the water wheel 23 into a reciprocating translational motion.

  The movement of the follower 25 b is transmitted to the nozzle body 11 through the cylinder 12. As a result, the hydraulic cleaning nozzle 10 discharges water that has passed through the water wheel 23 from the water discharge port 10a while rotating about the rotation axis Ax1. The state of FIG. 8B is a state in which the hydraulic cleaning nozzle 10 is rotated in the direction of the arrow A5, and the state of FIG. 8C is the state in which the hydraulic cleaning nozzle 10 is in the reverse direction (the direction of the arrow A6). It is in the state rotated to. Thus, the hydraulic cleaning nozzle 10 reciprocally rotates about the rotation axis Ax1 by the reciprocating translational motion output from the motion direction conversion mechanism 25. When the hydraulic cleaning nozzle 10 reciprocally rotates, the water discharge direction of the cleaning water changes, and a wide range of cleaning can be performed in the front-rear direction. For example, in the state where the tip of the nozzle is rotated downward as shown in FIG. 8C, the cleaning water is directed forward than in the state where the tip of the nozzle is rotated upward as shown in FIG. 8B. Water is discharged.

  Here, in order to perform extensive cleaning in the front-rear direction, it may be considered to use a configuration in which the nozzle body reciprocates with respect to the cylinder. However, in this case, a narrow flow path is provided between the nozzle body and the cylinder, and there is a possibility that foreign matter may be mixed in the narrow flow path. On the other hand, according to the sanitary washing toilet seat 100 according to the embodiment, the washing nozzle reciprocating means 20 includes the water wheel 23 that converts the fluid energy of the water supplied from the water supply source 204 into a one-way rotational movement. Therefore, fluid energy can be converted into rotational motion with a simple structure, and it is not necessary to provide a narrow channel. Therefore, it is possible to avoid a situation where foreign matter enters the narrow channel and the cleaning nozzle reciprocating means does not function. In addition, a wide range of cleaning in the front-rear direction by the hydraulic cleaning nozzle 10 can be realized over a long period of time.

In general, in the sanitary washing toilet seat, in addition to the fact that the volume of the internal space is not large, it is difficult to accommodate a large part inside due to the convenience of other parts. For this reason, it is difficult to accommodate a water turbine that directly generates the torque necessary for reciprocating translation of the hydraulic cleaning nozzle. Furthermore, the water pressure supplied to the sanitary washing toilet seat is determined, and it is difficult to directly generate the torque necessary for reciprocating translation of the hydraulic washing nozzle with the water pressure within the range.
Therefore, the cleaning nozzle reciprocating means 20 includes a motion direction conversion mechanism 25 that converts the one-way rotational motion output from the water wheel 23 into a reciprocating translational motion, and the hydraulic cleaning nozzle 10 is rotatably supported. At the same time, by rotating around the rotation axis Ax1 by the reciprocating translational motion output from the motion direction conversion mechanism 25, compared with the torque when the hydraulic cleaning nozzle is directly reciprocally translated by the torque output from the water turbine. The torque when the hydraulic cleaning nozzle is reciprocatingly rotated via the motion direction conversion mechanism 25 can be set smaller, so that the hydraulic cleaning nozzle 10 can be surely used even for a small water turbine with a low output torque. Can be reciprocatingly rotated to achieve a wide range of local cleaning in the front-rear direction where dirt easily adheres. Since the small turbine has a small inertia torque, even if the water supply source 204 has a low water pressure, the hydraulic cleaning nozzle 10 can be reliably reciprocally rotated by using the small turbine.

  The movement direction conversion mechanism 25 is not limited to the cam 25a and the follower 25b. For example, an arbitrary mechanism that can convert a rotary motion into a reciprocating translation motion, such as a slider crank or a four-bar link, can be used (see, for example, FIGS. 11A and 11B).

  However, when the movement direction conversion mechanism 25 includes the cam 25a and the follower 25b, and the follower 25b is provided in the hydraulic cleaning nozzle 10, the rotational movement generated by the fluid energy of the water supplied from the water supply source 204 is generated. Since the sliding resistance that can be generated when the hydraulic cleaning nozzle 10 is converted into the reciprocating rotational motion is only the sliding resistance generated between the cam 25a and the follower 25b, for example, the energy loss factor is minimized. The energy required for the reciprocating rotational movement of the hydraulic cleaning nozzle 10 can be extracted with high efficiency from the fluid energy of the water supplied from the water source 204, and the energy that can be used for local cleaning can be increased.

With reference to FIGS. 5-7 again, the specific example of the sanitary washing toilet seat 100 which concerns on embodiment is further demonstrated.
As shown in FIGS. 5 to 7, the cleaning nozzle reciprocating means 20 further includes a speed reducer 33 disposed between the water wheel 23 and the cam 25 a. The reduction gear 33 makes the rotation speed (per unit time) of the cam 25 a smaller than the rotation speed of the water turbine 23. In this example, the speed reducer 33 is a gear 33a and a gear 33b.

  The gear 33 a is engaged with the water wheel 23. As a result, when the water wheel 23 rotates, the gear 33a rotates around the drive shaft Ax3 in the direction opposite to the water wheel 23 (direction D4 shown in FIG. 5). For example, the drive axis Ax3 is parallel to the central axis Ax2. The gear 33b is engaged with the gear 33a. As a result, when the gear 33a rotates, the gear 33b rotates around the central axis Ax2 in the opposite direction to the gear 33a (direction D3 shown in FIG. 5).

  The gear 33b and the cam 25a are fixed with respect to the central axis Ax2. For this reason, when the gear 33b rotates, the cam 25a also rotates in the direction D3 about the central axis Ax2. That is, the cam 25a rotates integrally with at least a part (gear 33b) of the speed reducer 33.

  Thus, the cleaning nozzle reciprocating means 20 has the speed reducer 33, and the cam 25a rotates integrally with the speed reducer (gear 33b). As a result, the torque generated by the cam 25a becomes larger than the torque generated by the water turbine 23, so that the water turbine 23 does not need to output a high torque, and the hydraulic cleaning nozzle 10 is reliably secured in the vertical direction while downsizing the water wheel 23. It is possible to reciprocate.

  The central axis Ax2 extends in the direction of the water turbine 23 from a reduction gear (gear 33b) that rotates integrally with the cam 25a. As described above, the water turbine 23 rotates around the central axis Ax2. However, a gap G (see FIG. 5) is formed between the water wheel 23 and the central axis Ax2. As a result, the water turbine 23 can idle with respect to the central axis Ax2, and therefore the rotational speed of the cam 25a (central axis Ax2) can be made different from the rotational speed of the water turbine 23. And since the water wheel 23 and the center axis Ax2 are in a fluid lubrication state by filling the gap G with water, for example, the water wheel 23 in a high rotation state of 1000 revolutions per minute or more is in contact with the center axis Ax2. Thus, wear of the water wheel 23 or the central axis Ax2 is suppressed, and the durability of the cleaning nozzle reciprocating means 20 is further increased, so that a wide range of cleaning in the front-rear direction by the hydraulic cleaning nozzle 10 can be realized for a long time. it can.

  In this example, the speed reducer 33 has a two-stage gear, but the speed reducer 33 may use a gear of three or more stages, a gear of one stage, a pulley, a chain, or the like. When gears are used for the speed reducer 33, the number of members can be reduced compared to when pulleys or chains are used, so the speed reducer 33 can be reduced in size, and the sanitary washing toilet seat 100 itself can also be reduced in size. Can do. For example, the distance between the central axis Ax2 and the drive axis Ax3 (interaxial distance) can be shortened.

  Further, since the rotation direction of the cam 25a is the same as the rotation direction of the water wheel 23, the sliding resistance with respect to the cam 25a is reduced, so that the fluid energy of the water supplied from the water supply source 204 is efficiently transferred to the hydraulic cleaning nozzle. In addition to being able to be used for 10 rotational movements, the rotational speed of the cam 25a relative to the water wheel 23 is lower than when the rotational direction of the cam 25a is different from the rotational direction of the water wheel 23. The durability of the cam 23a and the cam 25a can be increased.

  Moreover, the reduction gear 33 and the water wheel are accommodated in the casing 31, and the casing 31 has a watertight structure. The casing 31 has a casing body 31A and a lid 31B. For example, a seal member (O-ring, rubber packing, etc.) 34 is disposed between the casing main body 31A and the lid 31B. Since the casing 31 is watertight, water for turning the water turbine 23 does not leak from the casing 31, so that the water supplied from the water supply source 204 is used for the rotational movement of the hydraulic cleaning nozzle 10 without waste. be able to.

  For example, as shown in FIG. 6, the cam 25a fixed to the central axis Ax2 is arranged outside the casing 31, and the central axis Ax2 is provided so as to penetrate the casing 31 (lid 31B). A seal structure 36 s is formed at the connection portion 36 between the cam 25 a and the speed reducer 33. In this example, the connecting portion 36 is a part of the central axis Ax2 that connects the cam 25a and the final stage (gear 33b) of the speed reducer 33. The connecting portion 36 may include a region in the middle of the multistage speed reducer 33. The seal structure 36s is constituted by, for example, a packing 36p that closes a gap between the central axis Ax2 and the casing 31 (lid 31B).

  Thus, the casing 31 accommodates the speed reducer 33, and the seal structure 36s is formed at the connecting portion 36 between the cam 25a and the speed reducer 33, whereby the rotational torque generated by the water turbine 23 is reduced. Since the seal structure 36s is formed after increasing by the above, the water-tightness of the seal structure 36s and the sliding performance of the connection portion 36 can be compatible, and the hydraulic cleaning nozzle 10 is reciprocated while reliably performing water-tightness. By rotating, a wide range of local cleaning in the front-rear direction can be realized.

FIG. 9A and FIG. 9B are side views illustrating the operation of the local cleaning unit of the sanitary cleaning toilet seat according to the embodiment. FIG. 9A and FIG. 9B show a part of the local cleaning unit 101 in a water discharge state.
As shown in FIGS. 9A and 9B, the reaction torque M1 and the self-weight torque M2 act on the hydraulic cleaning nozzle 10.

  The reaction torque M1 is a torque generated by a reaction force (water discharge reaction force F1) that acts on the hydraulic cleaning nozzle when the cleaning water W is discharged from the water discharge port 10a. The reaction torque M1 acts to rotate the hydraulic cleaning nozzle 10 about the rotation axis Ax1. The reaction force torque M1 includes the distance from the rotation axis Ax1 to the water discharge port 10a, the water pressure (flow rate) of water supplied to the hydraulic cleaning nozzle 10, and the outflow speed of the local cleaning water from the water discharge port 10a. Dependent.

The dead weight torque M2 is a torque caused by the dead weight (gravity F2) of the hydraulic cleaning nozzle 10. The self-weight torque M2 acts to rotate the hydraulic cleaning nozzle 10 about the rotation axis Ax1. The self-weight torque M2 depends on the distance from the rotation axis Ax1 to the center of gravity 10g and the mass of the hydraulic cleaning nozzle 10 (including the water in the hydraulic cleaning nozzle 10).
FIG. 9A shows an example in which the magnitude (absolute value) of the reaction force torque M1 is smaller than the magnitude (absolute value) of the own weight torque M2. FIG. 9B shows an example where the magnitude of the self-weight torque M2 is smaller than the magnitude of the reaction force torque M1.

  In this example, the reaction force torque M1 and the own weight torque M2 are opposed to the rotation axis Ax1. That is, the direction in which the reaction torque M1 rotates the hydraulic cleaning nozzle 10 is opposite to the direction in which the self-weight torque M2 rotates the hydraulic cleaning nozzle 10. However, in the embodiment, the direction in which the reaction torque M1 rotates the hydraulic cleaning nozzle 10 and the direction in which the self-weight torque M2 rotates the hydraulic cleaning nozzle 10 may be the same.

  In the example shown in FIG. 9A and FIG. 9B, a restoring force F3 against bending of the hose 40 acts on a connection portion (inlet 12a) between the hydraulic cleaning nozzle 10 and the hose 40. For the hose 40, for example, an elastic member such as rubber is used. For this reason, if the deformation | transformation from a predetermined shape (shape when the force is not applied from the outside) arises, the hose 40 will return to an original shape. For example, the hose 40 is a straight hose and extends linearly when no force is applied from the outside. Here, when the straight hose bends by an external force, a restoring force that causes the straight hose to return to a straight shape is generated. For this reason, the rotational torque M3 due to the restoring force F3 against the bending of the hose 40 acts on the hydraulic cleaning nozzle 10. The rotational torque M3 acts to rotate the hydraulic cleaning nozzle 10 about the rotation axis Ax1. The “rotational torque M3 due to the restoring force F3 with respect to the bending of the hose 40” is a torque due to the restoring force that attempts to return to the original shape when the hose 40 is deformed from a predetermined shape. The hose 40 may be a molded hose having a curved shape when no force is applied from the outside. The range of “rotational torque M3 due to restoring force F3 with respect to bending of hose 40” includes, for example, torque due to restoring force that attempts to return to the original curved shape when the molded hose becomes linear due to external force. It is.

  In consideration of the pressure of water flowing into the hydraulic cleaning nozzle 10, the weight of the hydraulic cleaning nozzle 10, and the like, the position of the rotation axis Ax1, the position, shape, and material of the hose 40 are adjusted. Thus, in the water discharge state shown in FIGS. 9A and 9B, the rotational torque M3 acts in the opposite direction to the larger torque of the reaction force torque M1 or the own weight torque M2.

  For example, in FIG. 9A, the outlet 31 b of the nozzle drive unit 30 is located below the inlet 12 a of the hydraulic cleaning nozzle 10. The direction in which the rotational torque M3 rotates the hydraulic cleaning nozzle 10 is opposite to the direction in which the self-weight torque M2 rotates the hydraulic cleaning nozzle 10.

  In contrast, in FIG. 9B, the outlet 31 b of the nozzle drive unit 30 is located above the inlet 12 a of the hydraulic cleaning nozzle 10. The direction in which the rotational torque M3 rotates the hydraulic cleaning nozzle 10 is opposite to the direction in which the reaction torque M1 rotates the hydraulic cleaning nozzle 10.

  Thus, the torque that acts on the hydraulic cleaning nozzle 10 by the self-weight torque M2 and the reaction force torque M1 due to the rotation torque M3 acting in the opposite direction to the torque that is greater than the self-weight torque M2 or the reaction force torque M1. Since the rotational torque M3 corrects the bias of the pressure, the influence of the self-weight torque M2 and the reaction torque M1 acting on the hydraulic cleaning nozzle 10 is suppressed, and the hydraulic cleaning nozzle can be used even in a water turbine having a low output torque. It can be reciprocatingly rotated.

  Alternatively, the position of the rotation axis Ax1 may be optimized so that the reaction force torque M1 and the dead weight torque M2 are opposed to the rotation axis Ax1 and are balanced in the water discharge state. For example, when the pressure of water flowing into the hydraulic cleaning nozzle 10 in the water discharge state has a width (for example, variation) around the reference water pressure, and the hydraulic cleaning nozzle 10 reciprocates around the reference position. The position of the rotation axis Ax1 is optimized at the reference water pressure / reference position. Thus, by optimizing the position of the rotation axis Ax1, the magnitude relationship between the reaction torque M1 and the self-weight torque M2 is switched according to the pressure of the water flowing into the hydraulic cleaning nozzle 10. For example, when the water pressure becomes higher than the reference water pressure that optimizes the position of the rotation axis Ax1, the reaction force torque M1 becomes larger than the self-weight torque M2. With such a configuration, the rotating shaft that acts on the hydraulic cleaning nozzle 10 as compared with the case where the reaction force torque M1 and the self-weight torque M2 act on the same side with respect to the rotating shaft Ax1 of the hydraulic cleaning nozzle 10. Since the total torque around Ax1 is reduced, the torque generated by the cleaning nozzle reciprocating means 20 necessary for reciprocatingly rotating the hydraulic cleaning nozzle 10 can be reduced. Note that the reference water pressure is arbitrary and is appropriately set by providing a valve or the like in the flow path.

FIG. 10A and FIG. 10B are side views illustrating a part of the local cleaning unit of the sanitary cleaning toilet seat according to the embodiment.
In FIG. 10A, the follower 25b is provided vertically below the cam 25a, as in the example shown in FIG. The follower 25b is in contact with the cam 25a on the vertical lower side of the cam 25a.

  At this time, when the pressure of the water supplied to the water turbine 23 is higher than the reference water pressure, the rotational speed of the water turbine 23 is increased and the rotational speed of the cam 25a is increased, while the water supplied to the hydraulic cleaning nozzle 10 is increased. Since the pressure also increases, the reaction force torque M1 applied to the hydraulic cleaning nozzle 10 also increases. Then, since the follower 25b is pressed against the cam 25a from below, the contact force between the cam 25a and the follower 25b increases, the sliding resistance between the cam 25a and the follower 25b increases, and the hydraulic type The cleaning nozzle 10 is difficult to rotate.

  On the other hand, when the pressure of the water supplied to the water turbine 23 is lower than the reference water pressure, the rotational speed of the water turbine 23 is lowered and the rotational speed of the cam 25a is lowered, while the water supplied to the hydraulic cleaning nozzle 10 is reduced. , The reaction force torque M1 applied to the hydraulic cleaning nozzle 10 is also reduced. The contact force between the cam 25a and the follower 25b is reduced, the sliding resistance between the cam 25a and the follower 25b is reduced, and the hydraulic cleaning nozzle 10 is easily rotated.

  That is, the ease of rotation of the hydraulic washing nozzle 10 changes in conjunction with the magnitude of the pressure of the water supplied to the water wheel 23, so that the hydraulic type is independent of the pressure of the water supplied to the sanitary washing toilet seat 100. Variations in the rotational speed of the cleaning nozzle 10 can be suppressed.

  Further, as shown in FIG. 10A, the cleaning nozzle reciprocating means 20 has a stopper 26. The stopper 26 faces the follower 25b through the cam 25a. That is, in the example of FIG. 10A, the stopper 26 is formed vertically above the cam 25a. The stopper 26 has a plate shape and is fixed to the cylinder 12 like the follower 25b.

  If the pressure of the water supplied to the hydraulic cleaning nozzle 10 suddenly drops, the reaction torque M1 may be reduced, and the follower 25b may be separated from the cam 25a. On the other hand, since the stopper 26 is formed, the cam 25a comes into contact with the stopper 26 when the reaction torque M1 applied to the hydraulic washing nozzle 10 greatly fluctuates, so that it is supplied to the sanitary washing toilet seat 100. The possibility of the hydraulic cleaning nozzle 10 jumping up due to fluctuations in the water pressure is suppressed, and the displacement of the cleaning position can be suppressed.

  On the other hand, in the example shown in FIG. 10B, the follower 25b is provided vertically above the cam 25a. The follower 25b is in contact with the cam 25a on the vertical upper side of the cam 25a. The stopper 26 is provided vertically below the cam 25a.

  When the follower 25b is in contact with the cam 25a on the vertical upper side of the cam 25a, the pressure of the water supplied to the hydraulic cleaning nozzle 10 is also increased when the pressure of the water supplied to the water turbine 23 is higher than the reference water pressure. Therefore, the reaction torque M1 applied to the hydraulic cleaning nozzle 10 also increases, and the follower 25b moves away from the cam. Thereby, the reciprocating rotational motion of the hydraulic cleaning nozzle 10 stops. That is, according to the water pressure supplied to the hydraulic cleaning nozzle 10, the local cleaning can be switched between wide-area cleaning by the reciprocating rotational movement of the hydraulic cleaning nozzle 10 and single-point cleaning.

FIG. 11A and FIG. 11B are side views illustrating a part of a local cleaning unit of a sanitary cleaning toilet seat according to a modification of the embodiment.
In the example shown in FIG. 11A, the motion direction conversion mechanism 25 includes a crank 51 and a rod 52 instead of the cam 25a and the follower 25b. The crank 51 is fixed to the fixed central axis Ax2, and rotates around the central axis Ax2. The rod 52 is connected to the crank 51 and the hydraulic cleaning nozzle 10. As the crank 51 rotates, the end 52a of the rod 52 performs a reciprocating translational motion in the vertical direction. Thereby, the hydraulic cleaning nozzle 10 reciprocally rotates.

In the example shown in FIG. 11B, the motion direction conversion mechanism includes a first link 53, a second link 54, and a third link 55 instead of the cam 25a and the follower 25b. The first link 53 is fixed to the fixed central axis Ax2, and rotates about the central axis Ax2. The second link 54 is connected to the rotation axis Ax1 and the center axis Ax2. The third link 55 is connected to the first link 53 and the hydraulic cleaning nozzle 10. As the first link 53 rotates, the end portion 55a of the third link 55 reciprocates. Thereby, the hydraulic cleaning nozzle 10 reciprocally rotates.
Even if only the first link 53 and the third link 55 are removed by removing the second link 54, the hydraulic cleaning nozzle 10 performs reciprocating rotational motion.

The embodiment of the present invention has been described above. However, the present invention is not limited to these descriptions. As long as the features of the present invention are provided, those skilled in the art appropriately modified the design of the above-described embodiments are also included in the scope of the present invention. For example, the shape, dimensions, material, arrangement, installation form, and the like of each element included in the hydraulic cleaning nozzle, the cleaning nozzle reciprocating means, and the like are not limited to those illustrated, but 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.

DESCRIPTION OF SYMBOLS 10 Hydraulic washing nozzle, 10a Water outlet, 10g Center of gravity, 11 Nozzle body, 11a Tubular part, 11b Flow path, 11e Closure part, 12 Cylinder, 12a Inlet, 20 Washing nozzle reciprocating means, 23 Water wheel, 25 Movement direction Conversion mechanism, 25a cam, 25b follower, 26 stopper, 30 nozzle drive unit, 31 casing, 31A casing body, 31B lid, 31a inlet, 31b outlet, 33 reducer, 33a gear, 33b gear, 36 connection, 36p Packing, 36s seal structure, 36s connection part, 40 hose, 51 crank, 52 rod, 52a end, 53 first link, 54 second link, 55 third link, 56 fourth link, 56a end, 100 sanitary washing Toilet seat (sanitary washing device), 101 local washing unit , 150 toilet bowl, 151 bowl, 200 toilet device, 201 outer member, 202 toilet seat, 203 toilet lid, 204 water supply source, 205 water stopcock, 206 on-off valve, Ax1 rotating shaft, Ax2 central shaft, Ax3 drive shaft, G gap , M1 reaction torque, M2 dead weight torque, M3 rotational torque, W wash water

Claims (13)

A nozzle body having a spout for discharging water supplied from a water supply source as local wash water;
A cylinder for housing the nozzle body;
A hydraulic cleaning nozzle that advances the nozzle body from the cylinder by water pressure supplied to the nozzle body;
Cleaning nozzle reciprocating means for reciprocating the hydraulic cleaning nozzle using fluid energy of water supplied from the water supply source;
A sanitary washing device comprising a local washing unit having
The cleaning nozzle reciprocating means is
A water wheel for converting fluid energy of water supplied from the water supply source into one-way rotational motion;
A direction-of-motion conversion mechanism that converts a unidirectional rotational motion output from the water wheel into a reciprocating translational motion;
With
The hydraulic cleaning nozzle is supported so as to be rotatable in the vertical direction about a rotation axis that is vertical and horizontal with respect to the direction in which the nozzle body extends, and the reciprocating translation output from the motion direction conversion mechanism. A sanitary washing device for discharging water that has passed through the water wheel from the water outlet while rotating about the rotation shaft by movement. The washing nozzle reciprocating means further comprises a casing for housing the water wheel,
The sanitary washing apparatus according to claim 1, wherein the casing is watertight. The cleaning nozzle reciprocating means further comprises a hose that fluidly communicates an outlet formed in the casing with an inlet of the hydraulic cleaning nozzle,
The rotational torque due to the restoring force with respect to the bending of the hose acts in the opposite direction to the larger torque of the self-weight torque due to the weight of the hydraulic cleaning nozzle or the reaction force torque due to the water discharge reaction force acting on the hydraulic cleaning nozzle. The sanitary washing device according to claim 2 characterized by these. The self-weight torque due to the self-weight of the hydraulic cleaning nozzle and the reaction torque due to the water discharge reaction force acting on the hydraulic cleaning nozzle are relative to the rotation axis of the hydraulic cleaning nozzle,
The sanitary washing apparatus according to claim 1 or 2, wherein a magnitude relationship between the self-weight torque and the reaction torque is switched according to a water pressure flowing into the hydraulic washing nozzle. The movement direction changing mechanism is composed of a cam and a follower in contact with the cam,
The sanitary washing apparatus according to any one of claims 1 to 4, wherein the hydraulic washing nozzle has the follower. A speed reducer is disposed between the water wheel and the cam to decelerate the rotation of the water wheel so that the rotation speed of the cam is smaller than the rotation speed of the water wheel.
The sanitary washing device according to claim 5, wherein the cam rotates integrally with the speed reducer. The casing houses the speed reducer;
The sanitary washing device according to claim 6, wherein a seal structure is formed at a connection portion between the cam and the speed reducer.   The sanitary washing device according to claim 6 or 7, wherein the speed reducer is a gear. The water wheel rotates about a central axis extending from the speed reducer;
The sanitary washing device according to any one of claims 6 to 8, wherein a gap is formed between the water wheel and the central shaft.   The sanitary washing device according to any one of claims 5 to 9, wherein a rotation direction of the cam is the same direction as a rotation direction of the water wheel.   The sanitary washing apparatus according to any one of claims 5 to 10, wherein the follower of the hydraulic washing nozzle is in contact with the cam on a vertically upper side of the cam.   The sanitary washing device according to any one of claims 5 to 10, wherein the follower of the hydraulic washing nozzle is in contact with the cam on a vertically lower side of the cam. The sanitary washing device according to any one of claims 5 to 12, wherein a stopper is formed at a position facing the follower via the cam.

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