JP3582609B2 - Local cleaning equipment - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to an apparatus for cleaning local parts after stool.
[0002]
[Prior art]
An apparatus for cleaning a local area after stool, in which a nozzle cap rotatable around the axis of the nozzle body is attached to the tip of the nozzle body that discharges washing water, and the nozzle cap is rotated by hand (Japanese Utility Model Publication No. 58-58). There is known a device that transmits the rotation of a drive motor via a bevel gear (see Japanese Patent Application Laid-Open No. 6-108516).
[0003]
[Problems to be solved by the invention]
However, in order to rotate the nozzle cap by hand, it is necessary to insert a hand into the back of the toilet when the nozzle is in the storage position, and the position cannot be visually confirmed, and the nozzle is dirty.
The one that transmits the rotation of the drive motor via a bevel gear is stored in the back of the toilet when the nozzle itself is not used, that is, when the toilet is used, and extends into the toilet when it is used, that is, when the local part is washed after the toilet. Therefore, it is difficult to reliably engage the gear on the nozzle cap side with the gear on the motor side. Further, since the nozzle cap moves in the axial direction of the nozzle with the rotation of the motor, there is a disadvantage that the position of the washing water outlet is not constant with respect to the base of the water supply pipe.
An object of the present invention is to provide a local cleaning apparatus free from such disadvantages.
[0005]
[Means for Solving the Problems]
According to the present invention, the cleaning nozzle provided at the tip of the water supply pipe 3 includes a nozzle body 10 and a nozzle cap 11 rotatably mounted around the axis of the nozzle body 10 at the tip of the nozzle body 10. A protrusion 112t extending in the axial direction of the nozzle body is formed on the outer periphery of the cap holder 112, and a notch hole 46a in which the protrusion 112t fits is formed in the spur gear 46 rotatably fitted in the water supply pipe 3. This is a local cleaning device provided with the spur gear 46 driven by a nozzle rotation drive motor. The notch hole 46a into which the ridge 112t fits is provided on the inner diameter side of the spur gear 46.
As described above, since the spur gear 46 is rotatably fitted to the water supply pipe without being fixed to the nozzle cap 11, there is no possibility that the spur gear 46 gets wet with the washing water .
[0006]
When rotating the Nozurukyapppu 1 1, control of the rotational angle is important. The drive motor rotates by inertia after the current is turned off. For this reason, if the driving force of the motor is transmitted by a normal gear, it is necessary to stop the motor in consideration of rotation due to inertia, and control becomes difficult. Therefore, it is preferable to transmit the rotation of the nozzle rotation drive motor to the spur gear via the intermittent feed gear device.
[0007]
The intermittent feed gear device preferably includes a pin gear 51 and a Geneva gear 52 driven by the pin gear 51.
[0008]
Using the pin 51p of the pin gear 51, the switch 41s that generates a pulse signal by rotating the pin gear 51 by one turn generates a pulse signal, and counts the pulses to control the rotation of the spur gear. This is because the number of rotations of the gear can be controlled.
[0009]
【Example】
This will be described below with reference to the drawings.
FIG. 1 is an exploded perspective view of a cleaning nozzle according to the present invention, FIG. 2 is a cross-sectional view of the cleaning nozzle cut along an axis, and FIG. 3 is a cross-sectional view taken along line AA of FIG.
The cleaning nozzle includes a nozzle body 10 and a nozzle cap 11 rotatably mounted around the axis of the nozzle body 10 and in close contact with the outer peripheral surface of the nozzle body 10. The nozzle body 10 is provided with a flow path 101 covered by a lid 103 via a packing 102. The nozzle cap 11 is integrated with a cap holder 112 rotatably mounted on an outer peripheral surface of a receiving port 105 for connecting the nozzle main body 10 to the water supply pipe 3 with a screw 112a. The O-ring 24 is fitted in the groove 106 provided on the outer peripheral surface of the nozzle body 10, and keeps the nozzle cap 11 and the nozzle body 10 watertight.
[0010]
The flow channel 101 communicates with the cleaning water passage 107, and the cleaning water is jetted into the flow channel 101 by water pressure, and is discharged from a water discharge port 104 through a cleaning water jet port 114 provided in the nozzle cap 11. The nozzle cap 11 is provided with a wide-mouth washing water spout 114a and a washing water spout 114b formed of four pores at a positional relationship of 90 degrees. An opening 124 is provided in the positional relationship between the degrees (see FIG. 3). An O-ring 25 for keeping the nozzle cap 11 and the nozzle body 10 watertight is fitted on the peripheral wall of the water outlet 104.
[0011]
A step 108a serving as a stopper is provided at the tip of the nozzle body 10, and a similar step 108b is provided at the bottom of the nozzle cap 11 (a portion facing the tip of the nozzle cap 10), and the side walls of the step come into contact with each other. In this case, the water outlet 104 of the nozzle body 10 and the washing water outlet 114 of the nozzle cap 11 coincide with each other. That is, the rotation angle is limited by this step so that the nozzle cap 11 can rotate only between the position where the spout 114a and the spout 104 coincide with each other and the position where the spout 114b and the spout 104 coincide. . For example, in the illustrated case, the step 108a at the tip of the nozzle body 10 has a sector shape with a central angle of 90 degrees, and the step 108b at the bottom of the nozzle cap 11 has a semicircular shape. In this way, a fan-shaped space extending 90 degrees is formed between the step 108a at the tip of the nozzle body 10 and the step 108b at the bottom of the nozzle cap 11, and the nozzle cap 11 can rotate by 90 degrees. When the side walls of the steps 108a and 108b are in contact with each other, the water outlet 104 of the nozzle body 10 and the washing water outlet 114 of the nozzle cap 11 coincide with each other. Positioning can be performed reliably.
[0012]
In this embodiment, by rotating the nozzle cap 11 by 90 degrees, the position of one of the washing water outlets and the water outlet 104 coincides. First, when the washing water outlet 114a coincides with the water outlet 104, air is sucked from the opening 124 and is sucked into the inlet 101p of the flow path. Next, when the nozzle cap 11 is rotated by 90 degrees and the washing water jet 114b coincides with the water outlet 104, the washing water jet 114a moves to the position of the opening 124, from which air is sucked and air is sucked. Inhaled into the mouth 101p.
[0013]
Next, a description will be given of a case where the nozzle cap 11 shown in FIG. 3 is configured to be able to rotate from a position where the intake port 124 coincides with the water outlet 104 to a position where the washing water outlet 114b coincides with the water outlet 104. In this case, the step 108b at the bottom of the nozzle cap 11 has a 90-degree sector shape.
[0014]
In this embodiment, by rotating the nozzle cap 11 by 180 degrees, the position of any one of the inlet port 124, the washing water outlet 114a or the washing water outlet 114b and the water outlet 104 is matched. First, when the intake port 124 coincides with the water discharge port 104, no air is sucked in because the intake port 101p does not communicate with the atmosphere. Hereinafter, when the nozzle cap 11 is rotated by 90 degrees, the state shown in FIG. 3 is obtained, and air is sucked from the opening 124 and is sucked into the inlet port 101p of the flow path. Next, when the nozzle cap 11 is further rotated by 90 degrees and the washing water outlet 114b is aligned with the water outlet 104, the washing water outlet 114a moves to the position of the opening 124, from which air is sucked, It is sucked into the intake port 101p.
[0015]
Next, a rotation mechanism of the nozzle cap 11 will be described.
Even if the rotation angle of the nozzle cap 11 is slightly deviated, the washing water will fly to a portion other than the local portion, so it is important to control the rotation angle accurately.
FIG. 4 shows a perspective view of the simplest mechanism. As the spur gear 46 configured to rotate with the nozzle cap holder rotates, the nozzle cap 11 rotates. As a result, the flush water outlet that is aligned with the water outlet 104 is switched. The spur gear 46 is rotated by transmitting the rotation of the nozzle cap driving motor 41 a by the transmission shaft 47 and the driving gear 42. After the nozzle cap 11 rotates to a predetermined position, the nozzle driving motor 41b is rotated, the water supply pipe 3 is advanced, and the nozzle cap 11 is moved to the cleaning position. The transmission shaft 47 is supported by the support arm 48 of the water supply pipe 3 so as to be rotatable and not to move in the axial direction, and the spur gear 46 and the drive gear 42 move while meshing. Since both the spur gear 46 and the drive gear 42 are spur gears, a certain amount of error is allowed before and after the stop position of the water supply pipe 3, which is convenient. Further, since the nozzle cap can be rotated at the position where the nozzle is extended, it is possible to switch the washing water ejection port even in the middle.
[0016]
FIG. 5 is a perspective view of another rotation mechanism, and FIG.
The mechanism shown in FIGS. 5 and 6 is an example using a Geneva gear 52. The Geneva gear 52 has a groove 52g into which the pin 51p can be inserted, and the pin rotates with one pin gear 51 as a driving gear until the pin 51p enters the groove 52g and completely comes out. Then, the pin gear 51 is stopped until it makes one rotation and the pin 51p enters the next groove 52g. Therefore, there is no possibility that the motor will rotate too much and rotate the gear 46 too much. Normally, the motor rotates by a certain angle due to inertia even when the power is turned off. However, if the number and interval of the grooves 52g are adjusted, the nozzle cap 11 can be accurately stopped at a predetermined position. Further, a switch 41s that generates a pulse when the pin 51p presses the switch 41s is provided at a position where the pin 51p contacts when the pin 51p rotates. Instead of the switch 41s operated by the pin 51p, a device using a magnetic effect such as a Hall element may be used. If a stepping motor is used, such a device is unnecessary.
The spur gear 46 is rotatably fitted to the water supply pipe 3. A concave portion 46a is provided on the inner diameter side, and a convex portion 112t that fits in the concave portion 46t is provided in the nozzle cap holder 112. When the water supply pipe 3 is retracted, the convex portion 112t fits in the concave portion 46t. The rotation is transmitted to the nozzle cap holder 112.
[0017]
Next, the operation of this device will be described.
The operator turns on the power after the stool (usually, it is configured to be turned on by pressing a cleaning button on the control panel). At this time, the ejection port of the washing nozzle is selected as desired or necessary (by pressing a selection button). Then, when the ejection port at the steady position is selected, the control device (not shown) turns on the power supply of the nozzle drive motor 41b.
On the other hand, when the ejection port that is not at the steady position is selected, the control device turns on the power supply of the nozzle cap drive motor 41a. Then, each time the pin 51p makes one rotation, the switch 41s is pressed to send a pulse to the control device. The control device counts the pulses, and upon receiving a predetermined number of pulses, turns off the power supply of the nozzle cap driving motor 41a and turns on the power supply of the nozzle driving motor 41b. After the nozzle advances to a predetermined position, the nozzle drive motor 41b stops, and the operation proceeds to the cleaning operation. When the operator presses the stop button after the washing is completed, the control device stops the ejection of the washing water and rotates the nozzle driving motor 41b in the reverse direction. Then, when the water supply pipe 3 retreats to the initial position, the control device rotates the nozzle cap driving motor 41a in the reverse direction, returns the nozzle to the steady position, and stops.
[0018]
The apparatus described above uses two motors for nozzle cap driving and nozzle driving. Next, an apparatus for driving both the nozzle cap and the nozzle with one motor will be described with reference to FIGS. 7, 8, 9, 10, and 11. FIG.
FIGS. 7, 8 and 11A show a state in which the nozzle is driven (expanded or contracted). FIGS. 9, 10 and 11B show a state in which the nozzle cap is driven (rotated). In FIG. 11, the gear Gc shown by the solid line meshes with the gear Gd also shown by the solid line, the gear Ga shown by the two-dot chain line meshes with the gear Gb also shown by the two-dot chain line, and the gear Gt shown by the dotted line also The gear Gu meshes with the dotted line. Among them, the gear Ga and the gear Gb indicated by the two-dot chain line always mesh with each other, and the other gears separate or mesh with each other depending on the position of the lever L. Hereinafter, this operation will be described.
The rotation of the motor M is transmitted to the gear Gb by the gear Ga. The gear Gb is supported by a bearing at one end of a lever L that swings about the axis of the gear Ga. At the other end of the lever L, a guide pin P fitted in the groove of the groove cam C is provided. The gear Gc and the gear Gt are also fitted on the shaft of the gear Gb, and the gear Gb, the gear Gc and the gear Gt are integrated. In accordance with the swing of the lever L, the gear Gb moves up and down while meshing with the gear Ga. When the gear Gb moves up, the gear Gd moves to a position where it meshes with the gear Gc, and the gear Gb moves down. Then, the gear Gu is attached at a position where the gear Gu meshes with the gear Gt.
The gear Gv is coaxial with the gear Gu, and the gear Gv meshes with the gear Gw. A rack is provided on the lower surface of the water supply pipe 3, and the gear Gw meshes with the rack (see FIGS. 7 and 8).
The gear Gd, the gear Ge, the gear Gf, the gear Gg, the gear Gh, and the gear Gi form meshing in this order, and change the rotation direction between the face gear Gh integrated with the gear Gi and the gear Gk meshing with the face gear Gh. The gear Gl is on the same axis as the gear Gk, and the gear Gl and the spur gear 46 are always meshed (fixed). When the nozzle contracts, the convex portion of the cap holder 112 is fitted into the concave portion 46t of the spur gear 46. (See FIGS. 9 and 10).
[0019]
Next, the operation of this device will be described.
The operator turns on the power after the stool (usually, it is configured to be turned on by pressing a cleaning button on the control panel). At this time, the ejection port of the washing nozzle is selected as desired or necessary (by pressing a selection button). Then, when the ejection port at the steady position is selected, the control device (not shown) turns on the power of the motor M as it is. When the nozzle is in a standby state in which the nozzle is contracted, the gear Gt is meshed with the gear Gu, and the rotation of the motor M is transmitted to the gear Gw to move the water supply pipe 3, extend the nozzle, and then enter the cleaning operation.
On the other hand, when the ejection port that is not in the steady position is selected, the control device turns on the driving device of the groove cam C, swings the lever L, and moves the gear Gc to a position where it meshes with the gear Gd. Then, the power of the motor M is turned on, and the nozzle cap 11 is rotated. When the nozzle cap finishes the predetermined rotation, the control device once turns off the power of the motor M, reversely rotates the driving device of the groove cam C, meshes the gear Gt and the gear Gu, and controls the rotation of the motor M to the gear. Gw, the water supply pipe 3 is moved, the nozzle is extended, and the cleaning operation is started.
When the operator presses the stop button after the washing is completed, the control device stops the ejection of the washing water and rotates the motor M in the reverse direction. Then, when the water supply pipe 3 is retracted to the initial position, the control device turns on the driving device of the groove cam C, swings the lever L, and moves the gear Gc to a position where it meshes with the gear Gd. Then, the power of the motor M is turned on, and the nozzle cap 11 is rotated. When the nozzle cap finishes the predetermined rotation and returns to the initial position, the control device turns off the power of the motor M, reversely rotates the driving device of the groove cam C, returns the lever L to the initial position, and stops.
[0020]
【The invention's effect】
According to the present invention, the cleaning nozzle provided at the tip of the water supply pipe includes the nozzle body and the nozzle cap rotatably mounted around the axis of the nozzle body at the tip of the nozzle body, and rotates integrally with the nozzle cap. Since the spur gear is driven by the nozzle rotation drive motor, the meshing of the gears can be easily adjusted.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a structure of a nozzle portion according to the present invention.
FIG. 2 is a sectional view of a nozzle portion according to the present invention.
FIG. 3 is a sectional view taken along line AA of FIG. 2;
FIG. 4 is a perspective view showing an example of a mechanism for rotating a nozzle cap.
FIG. 5 is a perspective view showing another example of a mechanism for rotating a nozzle cap.
FIG. 6 is a front view of a main part of FIG. 5;
FIG. 7 is a perspective view showing another example of a mechanism for rotating a nozzle cap.
FIG. 8 is a front view of a main part of FIG. 7;
FIG. 9 is a perspective view showing an operation state of FIG. 7;
FIG. 10
It is a front view of the principal part of FIG.
FIG. 11
8A and 8B are diagrams for explaining the operation of the mechanism of FIG. 7, wherein FIG. 8A shows the meshing of gears when the nozzle is driven, and FIG. 8B shows the meshing of gears when the nozzle cap is rotated.
[Explanation of symbols]
3 water supply pipe 10 nozzle body 11 nozzle cap 46 spur gear 41a nozzle rotation drive motor

Claims (4)

The cleaning nozzle provided at the tip of the water supply pipe comprises a nozzle body and a nozzle cap mounted at the tip of the nozzle body so as to be rotatable around the axis of the nozzle body. A notch is formed in a spur gear rotatably fitted to the water supply pipe, with a notch hole into which the protrusion is fitted, and the spur gear is driven by a nozzle rotation drive motor. Local cleaning equipment. The local cleaning device according to claim 1, wherein the rotation of the nozzle rotation drive motor is transmitted to a spur gear via an intermittent feed gear device. 3. The local cleaning device according to claim 2, wherein the intermittent feed gear device comprises a pin gear and a Geneva gear driven by the pin gear. 4. The local cleaning apparatus according to claim 3, wherein a switch for generating a pulse signal by one rotation of the pin gear is provided, and the pulse is counted to control the rotation of the spur gear.

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