JPH1171800A - Nozzle mechanism of sanitary washing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a nozzle structure of a sanitary washing device greatly simplified in the whole constitution in which the device can be satisfactorily driven with only one drive motor for instance. SOLUTION: This nozzle structure of a sanitary washing device is provided with a main jet hole 5 and a bidet-jet hole 6 at the front end and a stream passage-changeover valve 4 (4A, 4B) alternatively supplying water to both jet holes 5, 6 at the base end part, and further, a nozzle cylinder 3 provided with two water passages connecting two outflow openings of the changeover valves 4 and both jet holes 5, 6 respectively, in the cylinder. Also this nozzle structure is provided with a guide rail 2 fitting loose the nozzle cylinder 3 to be movable forward and rearward, a forward and rearward movement means selectively transferring the front end of the nozzle cylinder 3 to one of the main washing position, the bidet-washing position, and the retracted position, and a means forcibly opening or closing the valve body with an urging means for opening or closing the valve when the stream passage-changeover valve 4 has been transferred to a specified position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toilet bowl in which flush water is selectively jetted from two jet holes at the tip of a nozzle cylinder provided with a longitudinal movement mechanism according to the position of movement. The present invention relates to a nozzle mechanism of a sanitary washing device for use.

[0002]

2. Description of the Related Art An example of a conventional sanitary washing apparatus is shown in FIG. 45 as a sketch of the overall structure thereof, and FIG. 46 is a plan view of the state of attachment to a toilet bowl. The sanitary washing device 200 includes a hot water storage tank 2 having a built-in water supply valve 201 and a heater in order from the upstream side in a supply pipe system for washing water.
02, a rotary valve type flow path switching valve 203 driven by a motor and a rail cylinder 204 connected to a nozzle cylinder 205 which is mounted to be able to move back and forth. Reference numeral 206 denotes a motor for forward and backward movement, 207 denotes an operation control unit of the apparatus, and 208 denotes a hot air generator.

At the rear end of the nozzle cylinder 205, there are provided a plurality of inflow ports through which pressurized cleaning water flows. A nozzle head 205a at the tip of the nozzle cylinder has two cleaning heads for main cleaning and bidet cleaning. A water injection hole (not shown) is provided. The flow path switching valve 203 is provided in accordance with each operation mode of the sanitary washing device,
It serves to selectively switch and supply pressurized washing water to the plurality of inlets and injection holes.

[0004]

The sanitary washing apparatus having the above-mentioned structure has some problems to be improved.
(A) Since two motors are required for moving the nozzle cylinder back and forth and for rotating the flow path switching valve, the cost of parts and maintenance costs increase accordingly. (B) The configuration of the operation control unit of the device is also complicated. (C) It is necessary to connect the flow path switching valve and the nozzle cylinder with a plurality of hot water supply tubes. (D) The equipment is bulky because of the large number of parts.

Accordingly, an object of the present invention is to basically change the structure of the flow path switching valve so as to reduce the production cost and maintenance cost as much as possible, and to reduce the number of parts to be one such as a single motor for operating the apparatus. It is an object of the present invention to provide a nozzle mechanism of a sanitary washing device, in which the number of points is reduced and the overall configuration is greatly simplified.

[0006]

In order to achieve the above object, a nozzle mechanism of a sanitary washing apparatus according to the present invention has a main injection hole 5 and a bidet injection hole 6 at a distal end portion, and a base injection portion at the base end portion. Flow path switching valve 4 (4A, 4A) for selectively supplying water to both injection holes.
B), a nozzle tube 3 provided with two water passages 34 and 35 for connecting the two outlets of the flow path switching valve 4 and the two injection holes respectively, and the nozzle tube 3 A guide rail (2) for loosely fitting in a longitudinally movable manner, and longitudinal movement means for selectively moving a tip end of the nozzle tube (3) to any of a main cleaning position, a bidet cleaning position and a retracted position; The valve body of the flow path switching valve 4 is opened or closed by the valve opening / closing means in synchronization with the movement of the nozzle cylinder 3 to the respective positions by the means. And the valve opening / closing means is
Cam surfaces 15 and 16 (or 41) which are provided in the longitudinal direction of the guide rail 2 and have cam-like protrusions formed at a plurality of predetermined positions, and the valve which is forcibly opened by being pushed by the protrusions It is good to adopt a configuration that combines the body. Alternatively, as the valve opening / closing means, magnetic attraction surfaces 53 and 5 in which a magnetic plate of a predetermined length is adhered to one or more predetermined positions in the longitudinal direction of the guide rail 2
4 may be combined with a magnetic piece 52 attached to the valve body to generate a magnetic attraction between each magnetic plate.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described.
This will be described with reference to FIGS. FIG. 1 shows a sanitary washing device 100 in which a nozzle mechanism A1 of this embodiment is assembled.
FIG. 3 is a plan view showing a part of the cover body cut away. In the figure, 101 is a water supply valve, 102 is a hot water storage tank (water supply source), 103 is a hot water supply tube, 104 is a control panel of the apparatus, 105 is a hot air generator, and 300 is a toilet bowl.

The schematic structure of the nozzle mechanism A1 is, as shown in FIG.
A guide rail 2 (see FIG. 4) is provided integrally over the entire length of the slope, and a nozzle tube 3 (see FIG. 5)
Are mounted to be movable back and forth along the rail. At the rear end of the nozzle cylinder 3, a flow path switching valve 4 described later is fixed, and at the front end, as shown in FIG. 5, a main injection hole 5 used after stool and a bidet injection hole 6 are provided. It is provided upward at some interval. Further, a tip of the guide rail 2 is provided with a cleaning and purifying cover 7 for removing dirt from the nozzle tube 3 so as to face down to cover the tip.

As shown in FIGS. 2 and 3, one side of the base frame 1 on the base end (right end in the figure) is provided with a nozzle cylinder 3.
Is mounted. Pulleys 9 and 10 are attached to the other side of the base frame 1 at the front and rear ends thereof, and a timing belt 12 is stretched between the pulleys 9 and 10 and a pulley 11 which is fitted on the motor shaft. ing. Reference numeral 13 denotes the tension mechanism. These members 8
13 to 13 constitute means for moving the nozzle cylinder 3 back and forth.

An arm 14 protrudes from a side surface of the flow path switching valve 4, and one portion of the timing belt 12 is fixed to the arm 14. Thus, when the motor 8 is rotated by a predetermined number of rotations in the forward or reverse direction, as shown in FIG. 2, the nozzle cylinder 3 is moved to the main cleaning position (single-dot broken line position) or the bidet cleaning position (two-dot broken line). Position) or retreat to a standby position (solid line position) when the apparatus is not used.

The upper surface of the guide rail 2 is shown in FIGS.
1, As shown in FIG. 12, the first cam surface 15 and the second cam surface 16 are formed in parallel in the longitudinal direction. The first cam surface 15 has a cam-like cleaning projection 1 near its base end (right end in the figure) for cleaning the nozzle cylinder 3.
5a, and a main cleaning projection 15b near the tip. A cleaning projection 16a is provided near the base end of the second cam surface 16 in parallel with the cleaning projection 15a, and a bidet cleaning projection 16b is provided at the distal end. The front and rear sides of each of these projections are gently lowered and inclined as shown by arrows in FIG. 4 and FIGS. 11 and 12. 9a,
10a is a pulley shaft.

Next, the internal structure of the nozzle tube 3 and the flow path switching valve 4 will be described with reference to FIGS. First, as shown in FIGS. 9, 6, and 7, the flow path switching valve 4 is formed vertically inside the valve box 21 in parallel in the left-right direction.
A piston-shaped first valve body 24 and a second valve body 25 are loosely fitted in the two cylinders 22 and 23, respectively. Each of the cylinders 22 and 23 has its upper half part enlarged in diameter, and its step surface is used as a valve seat a.

On the other hand, both the valve bodies 24 and 25 also have ring-shaped packings 26 to be brought into contact with the valve seat a, while the diameter of the upper half is enlarged. A cylindrical water gap b is formed between the inner peripheral surface and the outer peripheral surface of the lower half of each of the valve bodies 24 and 25 and both cylinders 22 and 23. Further, a ring-shaped packing 27 of a type having a small sliding resistance is externally fitted to a lower portion of the two valve bodies 24 and 25. Furthermore, both valve bodies 2
At the upper end of each of the compression springs 28, there is provided a compression spring
28 are assembled.

As shown in FIG. 9, the lower ends of the two valve bodies 24 and 25 project from the open lower ends of the cylinders 22 and 23 by a predetermined length. And the second cam surface 16. At each lower end of the left and right outer wall surfaces of the valve box 21, a holding portion 21a that slidably holds the guide rail 2 is formed.

As shown in FIGS. 6 and 7, an inlet 31 for pressurized washing water is provided on the rear wall surface of the valve box 21, and an inlet 31 is provided on the front wall through a water passage gap b. A first outlet 32 and a second outlet 33 communicating with each other are provided.

As shown in FIGS. 6 to 8, the nozzle tube 3 has a first water passage 34 and a second water passage 35 provided with a vertical partition wall in the longitudinal direction thereof. . The first water passage 34 has a proximal end communicating with the first outlet 32, and a distal end communicating with the main injection hole 5 via the communication passage c. Further, the second water passage 35 has a base end connected to the second outlet 3.
3 and the tip is connected to the bidet injection hole 6 through the communication passage d.
Is conducted.

FIG. 10 shows a motor 8 attached to the base frame 1.
2 shows an assembled state of FIG. Reference numeral 36 denotes a block for fixing the motor 8, which is screwed to the base frame 1. Reference numeral 11 denotes a pulley which is fitted on the motor shaft.

Next, the operation of the nozzle mechanism A1 will be described for each of a cleaning mode for cleaning the tip of the nozzle tube 3, a front / back movement mode, a main cleaning mode, and a bidet cleaning mode for the nozzle tube 3. I do. When the sanitary washing device 100 is stopped (operation standby), the nozzle tube 3 is driven by a motor 8 which operates in response to an instruction from a control unit not shown in FIG.
1, as shown in FIG.
Has been retracted to the standby position in contact with the rear end of the vehicle. At this time,
The lower ends of the first and second valve bodies 24 and 25 have cleaning protrusions 15a against the compression spring 28 for urging the valve closing, as shown in an enlarged vertical cross-sectional view in FIG. , 16a, respectively, and both valve bodies 24, 25 are opened respectively.

In order to use the sanitary washing device 100, when the control panel 104 presses the main washing mode or bidet washing mode setting button, the supply of pressurized washing water to the inlet 31 of the flow path switching valve 4 is started. Once started, first, the cleaning mode of the nozzle cylinder 3 starts to operate. That is, the washing water flowing into the inflow port 31 of the flow path switching valve 4 passes through the water gap b between the two valve bodies 24 and 25, and flows from the first and second outflow ports 32 and 33 to the first and second flow ports. It flows into waterways 34 and 35.

The pressurized cleaning water that has reached the tip of the nozzle cylinder 3 is:
Each of the main injection hole 5 and the bidet injection hole 6 jets upward. At this time, as shown by the solid line in FIG. 2, the two spray holes 5, 6 are covered with the cleaning cover 7. Therefore, the spouted water is repelled to the inner surface of the cleaning cover 7 and collides with the tip of the nozzle tube 3, and if this portion is dirty, it is surely washed off. When the main cleaning mode is selected, when the cleaning mode ends,
The control unit switches the mode to the forward mode among the front and rear motion modes.

The operation of the forward mode is described with reference to FIGS.
This will be described with reference to FIG. With the shift to this mode, the motor 8 operates to advance the nozzle tube 3 toward the main cleaning position indicated by the one-dot broken line in FIG. When the flow path switching valve 4 moves forward together with the nozzle cylinder 3, the two valve bodies 24, 25
Is released from the pushing force of the cleaning projections 15a and 16a, and as shown in FIG.
Is closed by a compression spring 28. Therefore, it is not necessary to cause a problem that the cleaning water continues to be jetted out from both the injection holes 5 and 6 while the nozzle tube 3 is moving forward. When the nozzle tube 3 advances to the main cleaning position, the control unit switches the mode to the main cleaning mode.

The operation of the main cleaning mode is described with reference to FIGS.
9 will be described. In the forward position, the first valve body 24 for main cleaning has just climbed onto the main cleaning protrusion 15b as shown in FIGS. 17 and 19, and is in a valve-open state. On the other hand, the second valve body 25 for cleaning the bidet remains closed because there is no cam-like projection below it. Therefore, in this operation mode, the wash water is injected from the main injection hole 5 toward the user on the toilet 300 for a predetermined time. Note that the operation panel 104 is provided with a knob for adjusting the injection amount and the injection pressure of the cleaning water.

When the injection is completed, the mode is switched to the retreat mode of the front / rear motion mode, the motor 8 rotates reversely a predetermined number of times, and the nozzle tube 3 retreats to the standby position. With this retreat, the lower end of the first valve body 24 has the main cleaning projection 15b.
To return to the closed state. Therefore, even during the retreat, the cleaning water does not unnecessarily squirt out of both the injection holes 5 and 6. When the nozzle cylinder 3 returns to the retracted position, the mode is again switched to the cleaning mode, and then the sanitary washing device 100 automatically stops.

Next, the operation when the bidet cleaning mode is selected by the control panel 104 will be described with reference to FIGS. In this operation mode, the nozzle cylinder 3
Is advanced by the motor 8 from the standby position to the bidet cleaning position indicated by the two-dot broken line in FIG. At this time, the first valve body 2
As shown in FIGS. 20 and 22, the valve 4 is kept closed because no cam-like projection exists below it. on the other hand,
As shown in FIGS. 21 and 22, the second valve body 25 is opened by the lower end thereof just riding on the bidet cleaning projection 16b.

With the opening of the valve, the bidet injection hole 6
Wash water is sprayed toward the user on the toilet 300 for a predetermined time. When this injection ends, the mode switches to the reverse mode,
The motor 8 rotates in the reverse direction to return the nozzle tube 3 to the standby position. Then, after the operation of the cleaning mode is performed again, the operation of the sanitary washing device 100 is automatically stopped.

Next, a nozzle mechanism A2 according to a second embodiment of the present invention will be described with reference to FIGS. The difference from the nozzle mechanism A1 of the first embodiment lies in the structure of the flow path switching valve 4A and the form of the cam surface provided on the guide rail 2. That is, the first valve body 24A and the second valve body 25
A is not arranged in parallel in the valve box 21A, but is connected vertically in a vertical direction, and the lower end of the lower second valve body 25A is brought into contact with the upper surface of the guide rail 2; One cam surface 41 is formed. Other configurations are substantially the same as those of the first embodiment.

As shown in FIG. 23, the cam surface 41 formed on the upper surface of the guide rail 2 is provided with a cam-like cleaning protrusion 41a in contact with the base end thereof, and the main cleaning protrusion is provided at a position near the front end. 41b is provided. Further, no projection is provided at the tip end corresponding to the bidet cleaning position. These two protrusions 4
The front and rear sides of each of 1a and 41b are indicated by arrows in FIG. 23 and have a gentle downward slope as shown in FIG.

The internal structure of the nozzle cylinder 3 is shown in FIGS.
As shown in (1), it is substantially common to the nozzle mechanism A1 of the first embodiment. However, the partition walls that define the first and second water passages 34 and 35 are provided sideways.

The flow path switching valve 4A has the structure shown in FIGS. 27, 24 and 25. That is, a cylinder 42 that opens downward is formed in the valve box 21A. On the inner wall surface of the cylinder 42, a reduced diameter portion 42a is provided at an intermediate height position. As a result, the upper and lower annular end faces of the reduced diameter portion 42a are connected to the first valve body 24A and the second valve body
Are seats a and a to be brought into contact with each other.

The first valve element 24A has a height dimension that extends vertically above and below the reduced diameter portion 42a, and is fitted inside the cylinder 42 in a sliding contact state. The packing 26 is attached to the downward annular step surface formed at the upper end of the reduced diameter portion. Further, the upper ends of the first valve body 24A are provided with the two valve bodies 24A, 2A.
A compression spring 28 for urging the valves 5A together is assembled.

A second valve body 25A is fitted in a portion of the cylinder 42 below the reduced diameter portion 42a in a sliding contact state. A fitting projection provided at the lower end of the first valve body 24A is inserted into a fitting hole provided at the center of the top surface of the second valve body 25A, and the two valve bodies 24A and 25A are integrated. I have. An annular packing 26 is also attached to the top surface of the second valve body 25A to provide a contact surface with the lower valve seat a. Further, a slider 43 for reducing sliding contact resistance with the cam surface 41 is attached to the lower end of the second valve body 25A.

As shown in FIGS. 28 and 30 as sectional views taken along the line GG in FIG. 25, the small diameter portion on the lower side of the first valve body 24A has a cross section formed in a cross shape. I do. As a result, a water passage gap e (see FIG. 28) is formed to allow the inflow port 31 of the flow path switching valve 4A to communicate with the first outflow port 32 and the second outflow port 33.

Next, the operation of the nozzle mechanism A2 will be described.
The only difference from the nozzle mechanism A1 of the first embodiment is the difference in the structure between the two flow path switching valves 4 and 4A. A description will be given only of the operation of the valve 4A.

First, in a state where the sanitary washing device 100 is at rest and the nozzle tube 3 is retracted to the standby position, FIG.
9. As shown in FIG. 30, the lower end of the second valve body 25A below the flow path switching valve 4A is provided with a cleaning projection 41 having a predetermined projection height.
a. Therefore, as shown in an enlarged manner in FIG. 30, both of the valve bodies 24A and 25A
The valve is pushed up to a height position to open the valve against the valve closing biasing force of No. 8 and is set in the cleaning mode.

In this state, when the sanitary washing device 100 is started, the pressurized washing water started to be supplied toward the nozzle cylinder 3 is supplied to the inlet 31 of the flow path switching valve 4A → the water passage gap e → the first and the second. The second outlets 32 and 33 → The first and second water passages 34 and 35 are ejected from both the injection holes 5 and 6 toward the cleaning cover 7 for a predetermined time.

Next, when the nozzle cylinder 3 is advanced to the main cleaning position, as shown in FIGS. 31 and 32, the lower end of the second valve body 25A has a lower height than the cleaning projection 41a. It is in a state of riding on the protrusion 41b. Therefore, as shown in FIG. 32, the second valve body 25A is closed, and the first valve body 24A is closed.
Is opened, and the washing water is jetted only from the main injection hole 5.

FIGS. 33 and 34 illustrate the operation of the flow path switching valve 4A when the nozzle cylinder 3 has advanced to the bidet cleaning position. In this mode, there is no protrusion that pushes up the valve body on the cam surface 41 below the second valve body 25A.
As shown in an enlarged manner in FIG. 34, the biasing force of the compression spring 28 keeps the first valve body 24A closed, and the second valve body 25A
A is opened. Therefore, the washing water is jetted only from the bidet jet holes 6. The nozzle mechanism A2 of the second embodiment is provided with a mechanism that shuts off water supply to the flow path switching valve 4A when the nozzle tube 3 moves forward and backward.

Next, a nozzle mechanism A3 (see a partial view of FIG. 37) of a third embodiment according to the present invention will be described with reference to FIGS. The difference between the nozzle mechanism A3 of the third embodiment and the nozzle mechanism A1 of the first embodiment is the structure of the valve body portion of the flow path switching valve 4B constituting the valve opening / closing means and the guide rail 2; Are basically the same.

That is, as shown in FIG. 36 as a longitudinal sectional view of the flow path switching valve 4B moved to the bidet cleaning position on the guide rail 2, the first valve body 24B and the second valve body 25
At the upper end of B, tension springs 51 for urging the valve bodies 24B and 25B to open (instead of the compression spring 28 for urging the valve closing) are respectively assembled. As shown in the figure, the tension spring 51 has its upper and lower ends locked by locking protrusions f provided on the top of the valve box 21B and the upper ends of the valve bodies 25B and 26B, respectively. And the first and second valve bodies 24B, 25B
At the lower end of each, a truncated conical magnet piece (magnetic material piece) 52 is attached.

On the other hand, the (1st)
And instead of forming the second cam surfaces 15 and 16),
As shown in FIG. 35, the first magnetic attraction surface 53 and the second magnetic attraction surface 54 are provided in parallel. First magnetic attraction surface 5
3, magnetic plates 53a and 53b, each of which is made of a metal strip having a predetermined length, are divided into two portions, that is, a base end side (right end side in the figure) and a distal end side. I have. And
The base end of the first magnetic attraction surface 53 and both magnetic plates 53a and 53
Non-adsorbing surfaces g and h each having a predetermined length and lacking a magnetic plate are provided between the non-adsorbing surfaces g and h, respectively.

The magnetic plate 54a is adhered to the second magnetic attraction surface 54 with the non-attraction surfaces i and j of a predetermined length left at the base end and the front end, respectively. . Note that, as shown in FIG. 36, there is a gap k between the magnet pieces 52 attached to the lower ends of the two valve elements 24B and 25B and the respective magnetic plates, even during magnetic attraction, as shown in FIG. It is made to remain so that sliding resistance does not occur when the nozzle tube 3 moves back and forth.

Next, the operation of the nozzle mechanism A3 will be described with reference to FIGS.
This will be described with reference to FIG. The only difference in operation from the nozzle mechanism A1 of the first embodiment is that the forcible opening and closing of the valve body of the flow path switching valve is only based on the pressing force of the cam or the magnetic attraction force. Will be described only for the operation of the flow path switching valve 4B.

First, in a state where the sanitary washing device 100 is at rest and the nozzle tube 3 is retracted to the standby position, FIG.
7. As shown in FIG. 38, the magnet pieces 52 attached to the lower ends of the first and second valve bodies 24B and 25B both occupy positions facing the non-adsorption surfaces g and i. Therefore, as shown in FIG. 38 in an enlarged manner, both the valve bodies 24B and 25B are in a state where they are urged to open by the tension spring 51, and the flow path switching valve 4B operates in the above-described cleaning mode. Is set to

Next, in the forward mode in which the nozzle tube 3 is advanced to the main cleaning position, as shown in FIGS. 39 and 40, each of the magnet pieces at the lower ends of the first and second valve bodies 24B and 25B. Since both 52 are opposed to the magnetic plates 53a and 54a, a magnetic attractive force acts between the two magnet pieces 52 and the magnetic plates 53a and 54a. Therefore, FIG.
0, the first and second valve bodies 24B and 25B
Is sucked downward against the urging force of the tension spring 51. That is, in the forward mode, there is no problem that the washing water is ejected from the main injection holes 5 and the bidet injection holes 6. The same applies to the reverse mode.

Next, the operation in the main cleaning mode will be described with reference to FIGS. When the above-described forward movement is completed, the first valve body 24B for main cleaning is brought to a position directly facing the non-suction surface h as shown in the figure, and thus returns to the valve-opening maintaining state. On the other hand, the second valve body 25B for bidet cleaning has its magnet piece 52 still facing the magnetic plate 54a.
The valve is forcibly closed by magnetic attraction. Therefore, in this operation mode, flush water is sprayed from the main spray hole 5 only to the user on the toilet 300 for a predetermined time.

FIGS. 43 and 44 illustrate the operation of the flow path switching valve 4B when the nozzle tube 3 has advanced to the bidet cleaning position. In this mode, the first valve body 24B is forcibly closed because it faces the magnetic plate 53b as shown in the figure. On the other hand, since the second valve body 25B is brought to a position directly facing the non-adsorption surface j, the second valve body 25B returns to the valve-open maintaining state, and the washing water is jetted only from the bidet jet holes 6.

In the third embodiment, the compression spring 28 is used in place of the tension spring 51, and each of the magnetic plates 53a,
By reversing the arrangement relationship between 53b and 54a and each of the non-adsorption surfaces g to j, the flow path switching valve 4B is opened and closed by utilizing the magnetic repulsion generated between the magnet pieces 52 of the valve bodies 24A and 25A. It can also be done.

Further, the first and second valve bodies 24B and 25B may be made of a metal that is easily magnetized, and each magnetic plate 53 may be a magnet. Alternatively, the magnet pieces 52 are also used as the respective magnetic plates 53a, 53.
Both b and 54a may be magnets.

In each of the above embodiments, the object of the present invention can be achieved even if the detailed structure is appropriately changed in design. For example, the configuration of the flow path switching valves 4, 4 </ b> A, 4 </ b> B is such that a part of the valve body protruding outside the valve box is brought into sliding contact with a cam surface provided in the longitudinal direction of the guide rail 2, Various changes can be made as long as a configuration capable of directly facing the surface is provided. Further, as a means for moving the nozzle cylinder 3 back and forth, various well-known drive mechanisms other than those shown in the drawings may be employed.

[0050]

As is apparent from the above description, the nozzle mechanism of the sanitary washing device according to the present invention has the following practically superior effects as compared with the conventional one. (A) Since only one motor for operating the nozzle mechanism is required to move the nozzle cylinder back and forth, the cost for parts and maintenance can be reduced as compared with the conventional motor that requires two motors. (B) Also, the configuration of the operation control unit of the device can be simplified. (C) The jetting amount and jetting strength of the washing water can be freely changed with time simply by appropriately changing the shape and arrangement of the cam-like projections provided on the guide rail. (D) Conventionally, a plurality of water supply tubes were required for connection between a water supply source and a nozzle cylinder, but only one water supply tube is sufficient.

[Brief description of the drawings]

FIG. 1 is a partially broken plan view showing a first embodiment of the present invention and showing a state in which a sanitary washing device is attached to a rear portion of a toilet.

FIG. 2 is a side view of the nozzle mechanism.

FIG. 3 is a plan view of the nozzle mechanism.

FIG. 4 is a plan view of a guide rail according to the first embodiment;

FIG. 5 is a plan view of the nozzle cylinder according to the first embodiment;

FIG. 6 is a cross-sectional view of the nozzle cylinder, taken along an axis of the nozzle.

FIG. 7 is a longitudinal sectional view taken along the line BB of FIG. 6;

8 is an enlarged view of a tip portion of FIG. 7, and FIG.
It is a longitudinal cross-sectional view which follows the -C line.

FIG. 9 is an enlarged vertical sectional view taken along the line DD in FIG. 7;
Guide rails are also shown.

FIG. 10 is an explanatory diagram of a state where the motor is mounted on the base frame.

FIG. 11 is an explanatory view of the operation of the first valve body of the flow path switching valve in the cleaning mode according to the first embodiment.

FIG. 12 is a diagram illustrating the operation of the second valve body of the flow path switching valve in the cleaning mode according to the first embodiment.

FIG. 13 is an explanatory view of the operation of the flow path switching valve in the cleaning mode according to the first embodiment.

FIG. 14 shows the first state of the nozzle cylinder when moving forward and backward.
It is operation | movement explanatory drawing of a valve body.

FIG. 15 is the same as that of FIG.
It is operation | movement explanatory drawing of a valve body.

FIG. 16 is an explanatory view of the operation of the flow path switching valve when the nozzle cylinder moves forward and backward.

FIG. 17 is an explanatory view of the operation of the first valve body in the main cleaning mode.

FIG. 18 is an explanatory view of the operation of the second valve body in the main cleaning mode.

FIG. 19 is an explanatory view of the operation of the flow path switching valve in the main cleaning mode.

FIG. 20 is an explanatory view of the operation of the first valve body in the bidet cleaning mode.

FIG. 21 is an explanatory view of the operation of the second valve body in the bidet cleaning mode.

FIG. 22 is an explanatory view of the operation of the flow path switching valve in the bidet cleaning mode.

FIG. 23 shows a second embodiment of the present invention, and is a plan view of a guide rail.

FIG. 24 is a plan view of the nozzle cylinder according to the third embodiment;

FIG. 25 is a longitudinal sectional view taken along the line EE in FIG. 24;

26 is an enlarged view of the tip portion of FIG. 25 and a longitudinal sectional view thereof along line HH.

FIG. 27 is an enlarged vertical sectional view taken along line FF of FIG. 25, also showing a guide rail;

FIG. 28 is a transverse sectional view taken along the line GG in FIG. 25;

FIG. 29 is an explanatory view of the operation of the flow path switching valve in the cleaning mode according to the embodiment.

30 is an enlarged vertical sectional view taken along the line II of FIG. 29;

FIG. 31 is an explanatory view of the operation of the flow path switching valve in the main cleaning mode.

FIG. 32 is an enlarged vertical sectional view taken along the line JJ of FIG. 31;

FIG. 33 is an explanatory view of the operation of the flow path switching valve in the bidet cleaning mode.

34 is an enlarged vertical sectional view taken along the line KK in FIG. 33. FIG.

FIG. 35 shows a third embodiment of the present invention, and is a plan view of a guide rail.

36 is a longitudinal sectional view (in a direction perpendicular to the nozzle cylinder) of the flow path switching valve during bidet cleaning. FIG.

FIG. 37 is an explanatory diagram of the operation of both valve bodies of the flow path switching valve in the cleaning mode according to the third embodiment.

FIG. 38 is a longitudinal sectional view of the flow path switching valve in the operating state of FIG. 37.

FIG. 39 is an explanatory view of the operation of both valve bodies when the nozzle cylinder moves forward and backward.

40 is a longitudinal sectional view of the flow path switching valve in the operating state of FIG. 39.

FIG. 41 is an explanatory diagram of the operation of both valve bodies of the flow path switching valve in the same main cleaning mode.

42 is a longitudinal sectional view of the flow path switching valve in the operating state of FIG. 41. FIG.

FIG. 43 is an explanatory view of the operation of both valve bodies of the flow path switching valve in the bidet cleaning mode.

FIG. 44 is a longitudinal sectional view of the flow path switching valve in the operating state of FIG. 43.

FIG. 45 is a structural sketch of a conventional sanitary washing device.

FIG. 46 is a plan view of a state in which the sanitary washing device is attached to the toilet;

[Explanation of symbols]

 A1, A2, A3 Nozzle mechanism 1 Base frame 2 Guide rail 3 Nozzle cylinder 4, 4A, 4B Channel switching valve 5 Main injection hole 6 Bidet injection hole 7 Cleaning cover 8 Motor 9, 10, 11 Pulley 12 Timing belt 13 Tension Mechanism 14 Arm 15 First cam surface 16 Second cam surface 15a, 16a Cleaning projection 15b Main cleaning projection 16b Bidet cleaning projection 21, 21, A, 21B Valve box 21a Clamping section 22, 23 Cylinder 24, 24A, 24B First Valve body 25, 25A, 25B Second valve body 26, 27 Packing 28 Compression spring 31 Inflow port 32 First outflow port 33 Second outflow port 34 First water passage 35 Second water passage 41 Cam surface 41a Cleaning projection 41b Main Cleaning projection 42 Cylinder 42a Reduced diameter portion 43 Slider 51 Tension spring 52 Magnet piece (magnetic material piece) 53 First Air suction surface 54 Second magnetic suction surface 53a, 53b, 54a Magnetic plate a Valve seat b, e Water passage gap c, d Communication passage f Locking projection g to j Non-suction surface k Gap 100 Sanitary washing device 101 Water supply valve 102 Hot water storage tank (water supply source) 103 Hot water supply tube 104 Control panel 105 Hot air generator 300 Toilet bowl

Claims (10)

[Claims] 1. A main injection hole 5 and a bidet injection hole 6 are provided at a distal end portion, and a flow path switching valve 4 (4A, 4B) for selectively supplying water to both the injection holes is provided at a base end portion. The nozzle tube 3 is provided with two water passages 34 and 35 for electrically connecting the two outlets of the flow path switching valve 4 and the two injection holes, respectively, and the nozzle tube 3 is loosely fitted to be able to move back and forth. Guide rail 2
And a forward / backward moving means for selectively moving the tip of the nozzle tube 3 to any of a main cleaning position, a bidet cleaning position, and a retreat position. The nozzle mechanism of the sanitary washing device wherein the valve body of the flow path switching valve 4 is opened or closed by a valve opening / closing means in synchronization with the movement of the nozzle. 2. The valve opening / closing means includes a guide rail 2
Of the cam surfaces 15 and 16 (or 41) having a plurality of cam-like projections formed at a plurality of predetermined locations, and the valve body being forcibly opened by being pushed by the projections. 2. The nozzle mechanism for a sanitary washing device according to claim 1, wherein the nozzle mechanism comprises a combination. 3. The method according to claim 2, wherein the valve opening / closing means includes the guide rail (2).
A magnetic attraction force is applied between the magnetic attraction surfaces 53 and 54, each having a magnetic plate of a predetermined length adhered to one or more predetermined positions in the longitudinal direction of the valve, and the magnetic plates attached to the valve body. 2. The nozzle mechanism for a sanitary washing device according to claim 1, wherein the nozzle mechanism comprises a combination with a magnetic piece 52 to be generated, and one or both of the magnetic plate and the magnetic piece are magnets. 4. The flow path switching valve 4 includes a pair of valve bodies 24 and 25 for main injection and bidet injection.
1 and two cam surfaces 1 dedicated to each valve element.
5. A device according to claim 1, wherein said first and second parts are provided in parallel.
Or the nozzle mechanism of the sanitary washing device according to 2. 5. The flow path switching valve 4A includes a pair of valve bodies 24A and 25A for main injection and bidet injection, which are connected to one valve box 21.
5. A sanitary device according to claim 1, wherein the valve body is arranged in a column in A, and a part of one of the valve bodies 25A protrudes out of the box to abut on the cam surface 41. Nozzle mechanism of cleaning device. 6. The opening degree of the flow path switching valve 4 can be arbitrarily adjusted with time by appropriately changing the shape and arrangement of the projections provided on the cam surfaces 15, 16 and 41. The nozzle mechanism for a sanitary washing device according to any one of claims 1, 2, 4, and 5, wherein: 7. The flow path switching valve 4B has a pair of valve bodies 24B and 25B for main injection and bidet injection arranged in parallel such that a part of each of them protrudes outside the valve box 21B. 4. The sanitary washing device according to claim 1, wherein the guide rails 2 are provided with the magnetic suction surfaces 53 and 54 dedicated to the respective valve elements. Nozzle mechanism. 8. The cleaning water supply source 102 and the inflow port 31 of the flow path switching valve 4 are connected via a single hot water supply tube 103. A nozzle mechanism for a sanitary washing device according to item 1. 9. The front-rear movement means of the nozzle cylinder 3 includes one motor 8 driven and controlled by a control unit, and a transmission member that converts the rotation of the motor 8 into reciprocating motion and transmits the reciprocating motion to the nozzle cylinder 3. The nozzle mechanism for a sanitary washing device according to any one of claims 1 to 8, comprising a nozzle mechanism. 10. A cleaning cover 7 for the nozzle tube 3 is provided at the tip of the guide rail 2 so as to cover the main injection hole 5 and the bidet injection hole 6 and to repel water jetted from both injection holes. The nozzle mechanism for a sanitary washing device according to any one of claims 1 to 9, wherein: