JP2594400Y2 - Sanitary washing equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention relates to a rotatable and flowable
Equipped with a rotor that connects the inlet to the outlet or the outlet
It relates to a sanitary washing device .

[0002]

2. Description of the Related Art A sanitary washing apparatus capable of performing local washing by jetting of washing water or performing local drying by blowing hot air after washing has been conventionally used. This sanitary washing device includes a washing nozzle device in a casing fixed to a toilet body, and a pipe and various valves for supplying warm water for washing heated to an appropriate temperature to the nozzle device.

[0003] The method of supplying the washing water to the nozzle device generally uses, for example, a needle valve type flow control valve in the flow path so that the amount of the washing water to be injected can be changed. is there. Instead of such washing, a rotor that is rotated by a motor is provided, and the flow rate is adjusted by the rotation angle of the rotor, or the strength of the washing water is periodically changed by rotating the rotor forward or reverse. Some have a massage effect.

A flow regulating valve having a motor-driven rotor has a rotor incorporated in a valve housing so that the rotor can be driven to rotate by a motor, and the position of a flow channel provided on the peripheral surface of the rotor is changed from the inflow side. By changing the flow rate toward the outflow side, a massage function in which the flow rate is changed at a constant flow rate or with time is enabled. And
As the driving motor, an AC synchronous motor suitable for a case where the output is small and the required output is relatively small is generally adopted.

[0005]

However, in the initial period when the motor for driving the rotor is started, the phase of the current is shifted by 90 ° due to the impedance between the currents flowing through the coils. Therefore, in the area where this phase shift has occurred since the start of energization of the motor,
The torque generated by the output shaft becomes a transient response region, and within this region, the rotation of the rotor corresponding to the energizing pulse cannot be obtained. In particular, due to the inertia of the rotor, a large torque is required at the initial stage of rotation of the rotor, whereas in the transient region, a slip phenomenon occurs in which the motor is not sufficiently rotated even after the torque rises due to overload. For this reason, it becomes impossible to obtain the rotation amount of the rotor only according to the energizing pulse, or in the worst case, the motor is locked,
Rotation of the rotor becomes impossible.

[0006] In order to cope with such a trouble, it is conceivable to use a motor having a large output in order to obtain a sufficient torque in the initial stage of starting the motor. However, insufficient torque rise due to the transient region in the early stage of starting cannot be ignored, and it is still necessary to use a motor having a considerably large output in order to suppress the effect.

[0007] Therefore, in view of the design condition that it can be arranged only in a limited space in the casing,
This causes problems such as an increase in the space occupied by the motor itself and a decrease in the degree of freedom in the layout of peripheral devices provided by the motor.

As described above, in the case where the rotor is directly connected to the output shaft of the motor, and the attitude of the groove provided on the peripheral surface of the rotor has a periodic change for adjusting the flow rate or for massaging,
If the output shaft slips in the early stage of starting, it has a great effect on setting an appropriate flow rate.

The problem to be solved in the present invention is to make it possible to optimally use the rotor of the flow control valve without generating a torque shortage or a displacement during forward / reverse rotation without using a motor having a large output. It is in.

[0010]

SUMMARY OF THE INVENTION The present invention is directed to a sanitary washing apparatus which is rotatable and has a rotor (7) for communicating an inflow path (5a) with an outflow path (5g) or an outflow path (5h). The rotor (7) communicates the inflow path (5a) with the outflow path (5g) in accordance with the rotation angle, and a first rotation area whose effective communication area increases and decreases; inflow channel in accordance with the rotational angle, without interfering with (5a) is communicated with the outflow passage (5h), and a second rotation range in which the effective communication area is increased or decreased, further energizing pulse as a driving source
A connection hole (7a) for obtaining a driving force from an output shaft (6a) of a motor (6) driven in proportion to the motor speed.

The connection hole (7a) is provided with a slit (7
b) .

[0012]

According to the sanitary washing device of the present invention, the rotor (7)
Inflow path (5a) and outflow path (5g) according to the rotation angle of
Effective communication area between the two, or the inflow channel (5a) and the outflow channel
Water is discharged because the effective communication area with (5h) increases or decreases.
In addition to being able to change the amount of washing water,
Area and the second rotating area do not interfere with each other,
(5a) and outflow channel (5g) or inflow channel (5a)
Wash water is discharged from either one of the outflow path (5h).
It is possible to separately provide a flow path switching valve etc.
It becomes unnecessary. The rotor (7) is connected to the motor (6).
Drive, so the user does not have to bother
No. Moreover, the rotor (7) has an amount corresponding to the amount of the energizing pulse.
Drive is possible, and fine-grained drive is also possible.
The amount of wash water spouted as a result can be accurately controlled.
You. Further, the rotor is provided with a connection hole (7a).
Therefore, it can be connected to the output shaft of the motor.

Therefore, if the initial period at the start of the motor and the period during which the output shaft rotates with no load is adjusted to the period during which the torque applied to the output shaft of the motor rises from the start, the torque in the transition region can be increased. The occurrence of slippage of the rotor rotation due to shortage is prevented.

As described above, in the transient region of insufficient torque which cannot be avoided when starting the motor, the rotation is not transmitted to the rotor, and the rotor rotates only when the torque reaches an appropriate value. There is no. Therefore,
Even if the adjustment of the flow rate is repeated many times, the stop position of the rotor does not shift, and variation in the flow rate setting can be prevented. Also, the motor driven in proportion to the energizing pulse
Can adjust the rotation angle of the rotor accurately.
You.

[0015]

FIG. 1 is a perspective view showing an example of a toilet device provided with a sanitary washing device.

In FIG. 1, a casing 1 of a sanitary washing device is fixed to a toilet body 50. The casing 1 is provided with a toilet seat 1a and a toilet lid 1b, and has a toilet body 5 therein.
A cleaning water tank for supplying the cleaning water to the ball portion 0 is stored. Then, a nozzle device 2 which moves under the toilet seat 1a from the casing 1 and moves forward and backward is provided, and the nozzle device 2 is connected to a supply mechanism of washing water contained in the casing 1.

FIG. 2 is a schematic diagram showing a supply system of cleaning water to the nozzle device 2.

The nozzle device 2 includes a motor 2
By the drive of b, it is possible to move forward and backward between the storage position in the casing 1 and the washing position. And
In order to supply cleaning water to the nozzle device 2, a valve unit 3a incorporating an on-off valve and a pressure regulating valve connected to an external water supply pipe or a hot water tank 3b for heating and storing the water supply.
Incorporate. The hot water tank 3b includes a heater 3c and a temperature sensor 3d, heats the cleaning water to a set temperature, and when the water is supplied by opening the valve unit 3a, the cleaning water that has been heated to the nozzle device 2 side. Send out. Also,
A controller 3e for controlling all other functional units such as a washing function and drying using the nozzle device 2,
An operation panel 1 provided on the side of the casing 1
c or by a remote controller (not shown) hung on the wall.

A flow control valve 4 is installed between the hot water tank 3b and the nozzle device 2. The operation of the flow control valve 4 is controlled by the controller 3e like other devices, and the pulsating discharge can be set by adjusting the injection amount of the washing water from the nozzle device 2 and periodically increasing or decreasing the flow rate. It is what it was.

FIG. 3 is an exploded plan view showing the flow control valve 4, FIG. 4 is a longitudinal sectional view taken along line AA of FIG. 3, and FIG. 5 is a longitudinal sectional view taken along line BB of FIG. FIG.

The flow control valve 4 is a combination of a housing 5 and a motor 6 for rotationally driving a valve mechanism in the housing. The motor 6 protrudes the output shaft 6a toward the valve mechanism in the housing 5, and has a pin 6b protruding in the radial direction at the tip.

As shown in FIG. 4 and FIG.
Is formed with an inflow passage 5a connected to the hot water tank 3b side, and a float valve 5b is incorporated at an upper end thereof, and a drain passage 5c whose flow path end is open to the outside is formed above the float valve 5b. . The float valve 5b can be connected to and separated from the upper end of the inflow passage 5a and the lower end of the drain passage 5c, and the float valve 5b and the drain passage 5c constitute a vacuum breaker.

Further, a communication chamber 5d is provided on the side of the inflow path 5a, and the rotor 7 is rotatably assembled around its axis in a valve chamber 5f defined by a partition wall 5e with respect to the communication chamber 5d. Further, the lower end of the valve chamber 5f is connected to a first outflow path 5g and a second outflow path 5h that supply cleaning water to the nozzle device 2 in two systems.

FIG. 6 is an external view of the rotor 7, FIGS. 7 (a) and 7 (b) are sectional views taken along lines CC and DD of FIG. 6, respectively, and FIG. It is a figure showing the connection end with 6a.

A connection hole 7a for inserting the output shaft 6a of the motor 6 is provided in the end face of the rotor 7 in the axial direction as the rotational force transmitting portion. The inner diameter of the connection hole 7a is slightly larger than the outer diameter of the output shaft 6a of the motor 6, and the rotor 7 and the output shaft 6a are rotatable relative to each other. And the connection hole 7
In FIG. 8A, as shown in FIG. 8, a pin 7b of the output shaft 6a is fitted and a slit 7b for forming a gap is opened in the axial direction. The slit 7b has a fan-shaped opening cross section, in which the pin 6b can rotate within a certain angle range. Therefore, the output shaft 6a and the rotor 7 have a play due to the slit 7b and the pin 6b in the rotation direction, and the output shaft 6 and the rotor 7 The torque is transmitted.

The outer circumferential surface of the rotor 7 has two passage grooves 7
c and 7d are respectively formed. These channel grooves 7c, 7
"d" extends in the axial direction continuously from an annular recess provided in the circumference of a substantially central portion of the rotor 7 in the axial direction, and is cut in the circumferential direction from the end thereof. Then, as shown in FIG. 7, the length of the flow channel grooves 7c and 7d in the circumferential direction is set to approximately 1 / the circumference.
In the case of the posture shown in the drawing, the position is set to be symmetric with respect to the vertical plane including the center of the rotor 7.
Each of the flow grooves 7c and 7d has a shape in which the upper end portion is deepest and becomes gradually shallower toward the lower end.

By cutting such flow grooves 7c and 7d around the rotor 7, water in the communication chamber 5d can flow from the recess around the rotor 7 into the flow grooves 7c and 7d. In addition, the respective flow grooves 7c and 7d can be used as water supply paths to the nozzle device 2 as separate systems.

Further, these two flow passage grooves 7c, 7d
Are the first and second connected respectively to the valve chamber 5f.
Align with outflow paths 5g and 5h. Thereby, the rotor 7
Depending on the rotation direction, the combination of the flow channel 7c and the first outflow channel 5g and the combination of the other flow channel 7d and the second outflow hole 5h communicate with each other.

The first outflow channel 5g and the second outflow channel 5h
Are connected to the nozzle device 2 in different systems, and the cleaning water is supplied to the nozzle device 2 through a flow path from one of the two types of cleaning switches provided on the operation panel 1c by one operation. Further, the advance distance of the nozzle body 2a of the nozzle device 2 is set by the motor 2b in accordance with the type of the washing switch, and the nozzle body 2a also advances to the washing water jetting positions at two different points.

In the above configuration, when the first washing switch of the operation panel 1c is turned on, the valve unit 3a opens the flow path and pushes out the hot water which has been heated to a preset temperature from the hot water tank 3b to thereby release the flow control valve 4b. To supply. At the same time, the motor 6 of the flow control valve 4 operates and its output shaft 6
The rotor 7 connected to a is rotated. The rotor 7 is shown in FIG.
(A), and rotates counterclockwise so that the flow channel 7c communicates with the first outflow channel 5g. When another second cleaning switch is turned on, the output shaft 6 of the motor 6 is turned off.
a rotates in the opposite direction, and the rotor 7 rotates clockwise as shown in FIG. Accordingly, the other flow channel 7d communicates with the second outflow channel 5h. Also, the rotor 7
When the shaft rotates, the flow channel groove 7 increases with the rotation angle.
Since the flow path areas c and 7d also increase, the flow rate also increases in proportion to the rotation angle of the rotor 7, whereby the flow rate of the washing water supplied to the nozzle device 2 can be adjusted.

Assume that the output shaft 6a is rotated clockwise to return the rotor 7 to the valve closing position in FIG. 7 as shown in FIG. 9A. When the rotor 7 returns from the valve opening position to the valve closing position, the pin 6b abuts against a wall on one end side of the slit 7b, rotates the rotor 7 clockwise, and stops in this state. Then, when the motor 6 is operated again to rotate the output shaft 6a in the counterclockwise direction, the pin 6b and the pin 6b
In the state where play is formed between the end and the end in the direction of rotation, the pin 6b only advances in the slit 7b, the output shaft 6a is in a no-load state, and the pin 6b is connected to the slit 7b. The load is applied only when it comes into contact with the inner wall on the other end side.

As described above, when the motor 6 is started, an idle running period is provided so that no load is applied to the output shaft 6a. By adjusting the idle running period to a transition region where the torque rises at the start of energization to the motor 6, the rotation can be transmitted to the rotor 7 after the torque has completely risen to the set torque. Therefore, the rotor 7 does not rotate during the slip period which cannot be avoided when the motor 6 is started, and is driven after the torque has risen. Therefore, the rotation angle of the rotor 7 can be set to be exactly proportional to the energizing pulse. As a result, the accuracy of the rotation angle of the rotor 7 can be improved, and the accuracy of setting the flow rate can be improved. It should be noted that the energizing pulse is set so that the rotation angle of the rotor 7 can be controlled to a predetermined position including the idle running period.

After the flow rate is set to, for example, a medium level by the rotation of the rotor 7, the state is as shown in FIG. 9B.
Thereafter, if the rotor 7 is returned to the original valve closing direction, the output shaft 6a starts to rotate clockwise, but ends in the pin 6b and the slit 7b in the direction in which the pin 6b rotates. Since a play is formed between the pin 6b and the pin 6, the pin 6b runs idle in the slit 7b, and the rotation is transmitted to the rotor 7 after the torque rises in the same manner as described above.

Conversely, when an operation for setting a large flow rate is performed, the output shaft 6 shown in FIG. 9B is once rotated clockwise to set it in the state shown in FIG. The end in the direction in which the pin 6b rotates in the inside 7b has a play. Thereafter, when the output shaft 6 is driven to rotate in the counterclockwise direction, the pin 6b runs idle in the slit 7b at the time of startup, and the rotor 7
Transmit rotation to

As described above, the motor 6 is started and the rotor 7 is started.
Is controlled, the pin 6b of the output shaft 6a is controlled to be located on the end wall side of the slit 7b on the opposite side to the rotation direction. For this control, as mentioned earlier,
A control circuit may be provided to set the pin 6b as it is after the valve is closed from the valve closing operation to the valve opening operation, or to reverse the output shaft 6a once to increase the flow rate when the valve is opened.

Further, after the rotor 7 is set to the valve opening position and continuously rotated forward and reverse, the flow grooves 7c and 7
The flow rate of the washing water to the nozzle device 2 can be changed to a large or small value by the change in the flow channel area d. Again,
As described above, it is only necessary to control the pin 6b to run idle in the slit 7b at the time of startup, and pulsating water discharge is possible while setting the rotation angle of the rotor 7 with high accuracy.

In addition to the pulsating water discharge, if the rotor 7 is intermittently rotated in the forward and reverse directions to repeatedly close and open the valve, intermittent discharge from the nozzle device 2 can be performed. Become.

[0038]

According to the sanitary washing device of the present invention, the rotor
According to the rotation angle of (7), the inflow path (5a) and the outflow path
(5g), or the inflow channel (5a)
As the effective communication area with the outflow channel (5h) increases or decreases,
Not only can the amount of wash water used be changed,
Since the rotation area and the second rotation area do not interfere with each other,
Inflow channel (5a) and outflow channel (5g) or inflow channel (5
a) and the outflow path (5h).
Water can be selected and a separate flow path switching valve, etc.
It becomes unnecessary to remove .

[0039]

[Brief description of the drawings]

FIG. 1 is a perspective view of a sanitary washing device incorporating a flush water flow control valve of the present invention installed in a toilet bowl.

FIG. 2 is a schematic diagram showing a supply system of cleaning water to a nozzle device.

FIG. 3 is an exploded plan view showing a housing of a flow control valve and a motor thereof.

FIG. 4 is a vertical sectional view taken along line AA of FIG. 3;

FIG. 5 is a longitudinal sectional view taken along line BB of FIG. 4;

FIG. 6 is a diagram illustrating an appearance of a rotor.

7A and 7B are longitudinal sectional views of the rotor, wherein FIG. 7A is a sectional view taken along line CC of FIG. 6 and FIG. 7B is a sectional view taken along line DD of FIG. FIG.

FIG. 8 is a diagram illustrating a relationship between a pin of an output shaft and a slit of a rotor.

FIG. 9 is a diagram illustrating a change in a positional relationship between a pin and a slit when the output shaft rotates.

[Explanation of symbols]

 Reference Signs List 1 casing 2 nozzle device 3a valve unit 3b hot water tank 4 flow control valve 5 housing 6 motor 6a output shaft 6b pin 7 rotor 7a connection hole 7b slit

Claims (2)

(57) [Scope of request for utility model registration] 1. A sanitary washing apparatus rotatable and provided with a rotor (7) for communicating an inflow path (5a) with an outflow path (5g) or an outflow path (5h), wherein the rotor (7) is: The first way in which the inflow path (5a) communicates with the outflow path (5g) according to the rotation angle, and the effective communication area of the inflow path increases or decreases.
And a second rotation region in which the inflow passage (5a) communicates with the outflow passage (5h) according to the rotation angle without interfering with the first rotation region, and the effective communication area of which increases or decreases. And drive in proportion to the energizing pulse as a drive source .
That the motor (6) of the sanitary washing apparatus comprising the contact hole (7a) for obtaining a driving force from the output shaft (6a). 2. The sanitary washing device according to claim 1, wherein the connection hole (7a) has a slit (7b).