JP4285254B2 - Nozzle device - Google Patents

Description

  The present invention relates to a nozzle device for a warm water washing toilet seat for washing a human body part.

  2. Description of the Related Art Conventionally, as a nozzle device for this type of warm water cleaning toilet seat, there is a configuration in which cleaning is performed by driving one nozzle having a plurality of cleaning water channels for butt cleaning and bidet cleaning back and forth. However, in the above configuration, since the butt cleaning and the bidet cleaning are performed with a single nozzle, for example, when the bidet cleaning is performed after the butt cleaning, the protruding nozzle is temporarily returned due to a sanitary problem, and the nozzle is cleaned. There is a drawback that it takes time to switch because the nozzle is projected again later.

  On the other hand, as a nozzle device having a plurality of nozzles for butt washing and bidet washing, for example, two nozzles for washing and bidet washing are stored inside a cylinder having a water supply port. (See Patent Document 1). FIG. 9 shows a conventional nozzle device described in the above document. In FIG. 9, at the time of local cleaning, cleaning water flows into the cylinder from the water supply port, and the nozzle advances by the water pressure to perform cleaning.

Further, as a nozzle device that extends two nozzles for butt washing and bidet washing without using water pressure, for example, there is one using a motor (see Patent Document 2). FIG. 10 shows a conventional nozzle device described in the above document. In FIG. 10, at the time of local cleaning, the nozzle to be extended is determined by moving the switching arm linked to the motor up and down with another motor and switching the drive gear.
Japanese Utility Model Publication No. 04-22572 Japanese Patent Laid-Open No. 08-302794

  However, the method of extending the nozzle with water pressure causes a problem of reliability that the nozzle does not extend or is not accommodated due to clogging of dust. Further, when the water pressure is low, it can take time to complete the extension. In addition, in order to protrude by water pressure, it is necessary to make a double structure of the extending nozzle and the cylinder for storing it, so that a large storage space is required, and when the cylinder is moved by a motor, the driving device is not large. There was a problem of becoming something.

  On the other hand, the motor drive system that extends two nozzles using a switching arm or the like has the disadvantage that switching takes time because the other nozzle is driven only after the one nozzle is housed and the gear is switched. was there. In addition, the load on the motor becomes large when the gear is switched, which may cause a failure. Also, the assembly becomes complicated. Further, in such motor-driven nozzles, it is common to control the position of the non-driving body by using a stepping motor for the motor, but the stepping motor is expensive, so the product cost increases. There was a problem.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object of the present invention is to provide a warm water cleaning toilet seat nozzle device that realizes quick switching between buttocks cleaning and bidet cleaning, and is cheaper and easier to assemble.

In order to solve the above-described problems, the present invention provides a first nozzle that is inserted in a first passage formed in a nozzle mount so as to freely advance and retract, and a second passage that is provided in parallel to the first passage. Position of the first and second nozzles, the second DC motor that drives the first nozzle, the second DC motor that drives the second nozzle, And an actuator for transmitting the driving force of the first and second DC motors to the first and second nozzles, and the actuator is interlocked with the first and second DC motors, respectively. The first nozzle and the second nozzle are independently driven via a worm gear that rotates and one or a plurality of intermediate gears linked to the worm gear, and the detection means is provided on a side surface of the intermediate gear. Reflective surface, Composed of a reflective photosensor provided opposite to serial reflective surface, the reflective surface is one having said reflective portion are alternately arranged in a radial pattern from the intermediate gear rotation shaft and a non-reflective portion.

  According to the above invention, since the nozzle is driven using the motor, the nozzle can be immediately extended regardless of the water pressure, and the nozzle can be stopped at a predetermined position by the position detecting means. is there.

  Further, by providing independent driving motors for the first and second nozzles, it is possible to switch the nozzles more quickly. Further, since it is not necessary to employ a complicated configuration such as a switching gear, the assembly is simplified, and the cost can be further reduced by using a DC motor.

In addition, by providing a reflection type photosensor on the side surface of the intermediate gear as the detection means, the detection unit can be accommodated inside the actuator and can be made compact. In addition, the position detection accuracy can be adjusted by adjusting the number of the reflective portions and the non-reflective portions that are radially arranged alternately from the rotation shaft of the intermediate gear.

  As described above, according to the present invention, it is possible to provide a nozzle device for a warm water cleaning toilet seat that realizes quick switching between a buttocks cleaning and a bidet cleaning and is cheaper and easier to assemble.

1st invention is inserted in the 2nd channel | path provided in parallel with the 1st nozzle inserted in the 1st channel | path formed in the nozzle mount so that it can advance / retreat movably Second nozzle, a first DC motor for driving the first nozzle, a second DC motor for driving the second nozzle, and a detecting means for detecting the positions of the first and second nozzles And an actuator for transmitting the driving force of the first and second DC motors to the first and second nozzles, and the actuator includes a worm gear interlocked with the first and second DC motors, The first and second nozzles are independently driven via one or a plurality of intermediate gears interlocking with the worm gear, and the detection means includes a reflecting surface provided on a side surface of the intermediate gear; Opposite the reflective surface Composed of a reflective photosensor that kicked, the reflective surface is one having said reflective portion are alternately arranged in a radial pattern from the intermediate gear rotation shaft and a non-reflective portion.

  As a result, the nozzle can be extended immediately without depending on the water pressure, and the nozzle can be stopped at a position desired by the user. An independent drive motor is provided for each of the first and second nozzles. As a result, the nozzles can be switched more quickly. Further, since it is not necessary to adopt a complicated configuration such as a switching gear, the assembly is simplified, and further, the use of a DC motor can further reduce the cost.

  In addition, by using a worm gear, a motor that could previously be arranged only in the direction perpendicular to the nozzle can be arranged in the driving direction of the nozzle, and further, a DC motor can be housed inside the mount to achieve a more compact size. . Moreover, since the worm gear is used, self-locking works, so that the nozzle does not move even if a stopper is not provided.

  In addition, by providing a reflective photosensor on the side surface of the intermediate gear, the detection unit can be accommodated inside the actuator and can be made compact. In addition, the position detection accuracy can be adjusted by adjusting the number of the reflective portions and the non-reflective portions that are radially arranged alternately from the rotation shaft of the intermediate gear.

According to a second aspect of the present invention, a first nozzle inserted in a first passage formed in a nozzle mount so as to freely advance and retract, and a second passage provided in parallel with the first passage can freely advance and retract. Positions of the inserted second nozzle, a first DC motor that drives the first nozzle, a second DC motor that drives the second nozzle, and the first and second nozzles Detecting means for detecting, and an actuator for transmitting the driving force of the first and second DC motors to the first and second nozzles, and the detecting means is provided after the first nozzle and the second nozzle. A shielding part provided at the end, and a transmission type photosensor installed so that the light projection from the light emitting part to the light receiving part is shielded by the movement of the shielding part.

  As a result, the nozzle can be extended immediately without depending on the water pressure, and the nozzle can be stopped at a position desired by the user. An independent drive motor is provided for each of the first and second nozzles. As a result, the nozzles can be switched more quickly. Further, since it is not necessary to adopt a complicated configuration such as a switching gear, the assembly is simplified, and further, the use of a DC motor can further reduce the cost.

  In addition, since a transmissive photosensor can be used and disposed above the nozzle, the influence of water drops is small, and highly reliable position detection can be performed.

In the third aspect of the invention, the self-locking force is large in the worm gear of 1 or 2 but the self-locking force is relatively small in the worm gear of 3 or more, so the nozzle is not used at the time of power failure or nozzle cleaning. even moved by hand, as possible de be driven not impose an excessive load on gears and DC motor.

According to the fourth aspect of the present invention, the actuator for driving each of the two nozzles is integrally formed in a gear box independent of the nozzle mount, and is attached from the lower side of the nozzle mount, thereby improving the assemblability.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
1 is a plan view of a nozzle device according to Embodiment 1 of the present invention, and FIG. 2 is a side view thereof. 3 is a perspective view of the nozzle device plan view, FIG. 4 is a perspective view of the nozzle device side view, and FIG. 5 is an enlarged view of the vicinity of the intermediate gear of FIG. 3-5, the gear teeth and the rack on the bottom of the nozzle are omitted. A first nozzle 4 and a second nozzle 5 are inserted into the first passage 2 and the second passage 3 on the nozzle mount 1 so as to freely advance and retract. A first DC motor 6 and a second DC motor 7 transmit driving force to the first nozzle 4 and the second nozzle 5 via independent actuators 8 respectively. As the actuator 8, there is a worm gear 9 in which a shaft of the first DC motor 6 or the second DC motor 7 is inserted, and this is interlocked with each DC motor. Further, one or a plurality of gears that are linked to the worm gear 9 and drive the first nozzle 4 or the second nozzle 5 include an intermediate gear 10 that is linked to each worm gear 9 and each intermediate gear 10. And a drive gear 11 for driving the first nozzle 4 or the second nozzle 5. On the side surface of the intermediate gear 10, there are a reflecting portion 12 and a non-reflecting portion 13 that are alternately arranged radially from the rotation axis, and a reflective photosensor 14 is provided so as to face the reflecting surface. For example, when the user presses a buttocks cleaning switch (not shown), the first DC motor 6 is activated and the first nozzle 4 for cleaning the buttocks protrudes. At that time, control is performed such that the pulse is read from the intermediate gear 10 on which the reflection type photosensor 14 rotates, and the operation of the first DC motor 6 is stopped at a predetermined number of pulses. In this state, the cleaning position can be adjusted by driving the first nozzle 4 back and forth, and the jet can be swung.

  The second nozzle 5 can operate in the same manner as the first nozzle 4. Moreover, since the operations of the first nozzle 4 and the second nozzle 5 are independent, for example, the first nozzle 4 and the second nozzle 5 are projected at the same time, and the butt cleaning and the bidet cleaning are performed simultaneously. When the user cleans the nozzle, the first nozzle 4 and the second nozzle 5 can be projected at the same time, so that the nozzle cleaning is quick and easy. In addition, by making the worm gear 9 into a three-row worm gear, even if the nozzle is moved by hand when cleaning the nozzle, it is possible to drive each gear and DC motor without applying extra load, and there is a risk of damage. Absent.

In the present embodiment, a method of directly painting the intermediate gear 10 with the reflecting portions 12 and the non-reflecting portions 13 that are alternately arranged radially from the rotation axis on the side surface of the intermediate gear 10 can be considered. For example, aluminum having a high reflectivity can be used for the reflective portion 12, and matte black ink having a low reflectivity can be used for the non-reflective portion 13. Also, the material of the intermediate gear 10 is made highly reflective and only the non-reflective portion 13 is painted with a low reflectance, or conversely, the material of the intermediate gear 10 is made low in reflectance and the non-reflective portion It is also conceivable to paint only 13 having a high reflectance. These means can be automated by a machine if you only make a paint plate. As another method, a seal in which a reflective portion 12 printed with high reflectivity aluminum or the like and a non-reflective portion 13 printed with low reflectivity matte black ink or the like is radially arranged alternately is created. A method such as sticking to can also be considered. Since fine printing is possible with this method, even a middle gear 10 of the same size can create more thin reflective portions 12 and non-reflective portions 13, so that more accurate nozzle drive control is possible. Can be done. As another method, there is a method in which the material of the intermediate gear 10 is made highly reflective and the non-reflective portion 13 is made one stage until it is out of the detection distance of the reflective photosensor 14 or is made hollow. . With this method, as long as the intermediate gear 10 can be molded, there is no other necessary work and it is simple.

  Further, although the actuator 8 of this embodiment has such a configuration, it is also conceivable that the intermediate gear 10 is eliminated, the worm gear 9 directly interlocks with the drive gear 11, or two or more intermediate gears. If the worm gear 9 is directly linked to the drive gear 11, the space of the actuator 8 can be further reduced. When the number of intermediate gears 10 is two or more, a larger reduction ratio can be obtained.

(Embodiment 2)
6 is a perspective view of a plan view of a nozzle device according to Embodiment 2 of the present invention, and FIG. 7 is a perspective view of a side view of the nozzle device. 6 and 7, the gear teeth and the rack at the bottom of the nozzle are omitted. Components having the same reference numerals as those in FIGS. 1 to 5 are corresponding components, and detailed description thereof is omitted. In the figure, the shielding portion 15 provided at the rear end of the first nozzle 4 and the second nozzle 5, and the light emitting portion to the light receiving portion when the first nozzle 4 and the second nozzle 5 extend to a predetermined position. The position detecting means is constituted by a transmissive photosensor 16 installed so as to shield the projected light. Although it is possible to dispose the shielding unit 15 and the transmissive photosensor 16 in the downward direction of the nozzle, the disposition of the shielding portion 15 and the upward direction as shown in the figure reduces the influence of water droplets and enables highly reliable position detection. . In addition, the position detecting means of the first and second embodiments can be installed in the nozzle device at the same time, so that more accurate nozzle drive control can be performed.

(Embodiment 3)
FIG. 8 is a perspective view of the gear box according to the third embodiment of the present invention, and the components having the same reference numerals as those in FIGS. 1 to 5 are the corresponding components and will not be described in detail. In the figure, a first DC motor 6 and a second DC motor 7 are configured in one gear box 17 independent of the nozzle mount 1 together with the independent actuators 8. By doing so, the two existing DC motors and actuators 8 can be combined into one in assembling work, and assemblability can be improved. Further, by incorporating the reflective photosensor 14 in Embodiment 1 at the same time, the influence of water droplets on the reflective photosensor 14 can be reduced, and the reliability of position detection can be improved.

As described above, the nozzle device according to the present invention, since the rapid switching of bidet and bidet washing can be performed with configuration easily assembled and inexpensive, available in high warm water washing toilet seat value-added at low cost At the same time, it can also be used in a cleaning device using an extendable nozzle.

The top view of the nozzle apparatus of Embodiment 1 of this invention Side view of the nozzle device Perspective view of the nozzle device plan view Perspective view of the nozzle device side view Enlarged view of the vicinity of the intermediate gear in the perspective view of the nozzle device side view The perspective view of the nozzle apparatus top view of Embodiment 2 of this invention Perspective view of the nozzle device side view The perspective view of the gear box of Embodiment 3 of this invention Schematic configuration diagram of a conventional nozzle device Schematic configuration diagram of a conventional nozzle device

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Nozzle mount 2 1st channel | path 3 2nd channel | path 4 1st nozzle 5 2nd nozzle 6 1st DC motor 7 2nd DC motor 8 Actuator 9 Worm gear 10 Intermediate gear 11 Gear (drive gear)
12 reflective portion 13 non-reflective portion 14 reflective photosensor 15 shielding portion 16 transmissive photosensor 17 gearbox

Claims (4)

A first nozzle that is inserted into a first passage formed in the nozzle mount so as to freely advance and retract, and a second nozzle that is inserted into a second passage provided in parallel to the first passage so as to freely advance and retract. A nozzle, a first DC motor for driving the first nozzle, a second DC motor for driving the second nozzle, and detection means for detecting the positions of the first and second nozzles; An actuator for transmitting the driving force of the first and second DC motors to the first and second nozzles, and the actuator includes a worm gear interlocked with the first and second DC motors, The first and second nozzles are independently driven via one or a plurality of intermediate gears interlocking with the worm gear, and the detection means includes a reflecting surface provided on a side surface of the intermediate gear; Reflective surface Composed of a reflective photosensor provided oppositely, the reflective surface is a nozzle device having said reflective portion are alternately arranged in a radial pattern from the intermediate gear rotation shaft and a non-reflective portion. A first nozzle that is inserted into a first passage formed in the nozzle mount so as to freely advance and retract, and a second nozzle that is inserted into a second passage provided in parallel to the first passage so as to freely advance and retract. A nozzle, a first DC motor for driving the first nozzle, a second DC motor for driving the second nozzle, and detection means for detecting the positions of the first and second nozzles; And an actuator for transmitting the driving force of the first and second DC motors to the first and second nozzles, and the detecting means is a shield provided at the rear ends of the first nozzle and the second nozzle. And a transmissive photosensor installed so that the light projection from the light emitting part to the light receiving part is shielded by the movement of the shielding part. The nozzle device according to claim 1 , wherein the worm gear is a three-row worm gear. The nozzle device according to any one of claims 1 to 3 , wherein the actuator is integrally formed in a gear box independent of the nozzle mount, and the gear box is attached from below the nozzle mount.

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