JP7124643B2 - bathtub cleaning equipment - Google Patents

Description

Aspects of the present invention relate generally to bathtub cleaning devices.

A bathtub cleaning device that automatically cleans a bathtub is known (Patent Document 1). Such a bathtub washing apparatus can automatically wash the inner wall surface of the bathtub by spraying detergent, water (hot water), or the like on the inner wall surface of the bathtub.

JP-A-5-49589

2. Description of the Related Art In a conventional bathtub cleaning device, a method of ejecting detergent water while rotating a nozzle is known. Further, in a conventional bathtub cleaning apparatus, there is a method in which a nozzle is protruded toward the inside of the bathtub from a state in which the nozzle is housed in the inner wall surface of the bathtub to jet detergent water. In a bathtub cleaning apparatus that performs such a cleaning method, the nozzle can be driven (for example, rotated or protruded) to spray detergent water over the entire bathtub.

However, in a bathtub cleaning apparatus that performs such a cleaning method, there is a problem that when the nozzle is stuck due to clogging of dirt due to cleaning, the driving of the nozzle is hindered, making it impossible to clean the inner wall surface of the bathtub. .

SUMMARY OF THE INVENTION The present invention has been made based on recognition of such problems, and an object of the present invention is to provide a bathtub cleaning apparatus capable of suppressing sticking of nozzles.

A first invention is provided on an inner bottom surface or an inner wall surface of a bathtub, and includes a nozzle for ejecting a liquid toward the inner wall surface, a drive unit for driving the nozzle, and an anti-adhesion unit for preventing the nozzle from sticking. A bathtub cleaning device characterized by comprising:

According to this bathtub cleaning device, by providing the sticking prevention part, it is possible to prevent the nozzle from sticking while enabling the nozzle to be driven to eject the liquid over the entire inner wall surface of the bathtub.

In a second aspect based on the first aspect, the drive section has a rotating section that rotates the nozzle, the sticking prevention section has a control section that controls the rotating section, and the control section includes and performing a first anti-sticking operation of rotating the nozzle by the rotating portion when a period during which the nozzle does not rotate exceeds a predetermined period.

According to this bathtub cleaning device, when the period in which the nozzle does not rotate exceeds a predetermined period, the first sticking prevention operation is performed to rotate the nozzle. It is possible to prevent the nozzle from sticking due to rotation.

In a third aspect based on the second aspect, the rotating portion is a motor, and the control portion rotates the nozzle by the motor without ejecting the liquid in the first sticking prevention operation. It is a bathtub cleaning device characterized by

According to this bathtub cleaning device, in the first sticking prevention operation, the nozzle is rotated by the motor without ejecting the liquid, so that even when the nozzle does not rotate for a long period of time, the amount of liquid used can be suppressed and the nozzle can be rotated. It is possible to prevent the nozzle from sticking by rotating it periodically.

A fourth aspect of the invention is the bathtub according to the second or third aspect, wherein the controller controls the rotating part so that an initial driving force increases when rotating the nozzle. Cleaning equipment.

According to this bathtub cleaning device, by increasing the initial driving force when rotating the nozzle, the nozzle can be smoothly rotated even when the nozzle is slightly stuck. As a result, it is possible to prevent the nozzle from being severely stuck.

According to a fifth aspect of the invention, in any one of the second to fourth aspects of the invention, a rotation detection unit for detecting rotation of the nozzle is further provided, and the control unit performs control to rotate the nozzle. The bathtub cleaning apparatus is characterized in that the rotating section is controlled so as to stop the rotation of the nozzle when the rotation detecting section does not detect the rotation of the nozzle.

According to this bathtub cleaning device, when the rotation detection unit does not detect the rotation of the nozzle despite the control to rotate the nozzle, by stopping the rotation of the nozzle, the rotation unit can be operated in a state where the nozzle does not rotate. It can be suppressed to continue to operate. As a result, it is possible to suppress secondary failures such as failures of the rotating part due to sticking of the nozzles.

In a sixth invention, in any one of the first to fifth inventions, the drive section has an advance/retreat section for advancing and retreating the nozzle inside the bathtub, and the fixation prevention section includes the advance/retreat section. wherein, when a period during which the nozzle does not advance or retreat exceeds a predetermined period, the control section executes a second sticking prevention operation for advancing and retreating the nozzle by the advancing and retreating section. It is a bathtub cleaning device that

According to this bathtub cleaning device, when the period in which the nozzle does not move forward or backward exceeds a predetermined period, the second sticking prevention operation is executed to move the nozzle forward or backward. Adhesion and retraction of the nozzle can be suppressed.

According to a seventh aspect of the invention, in the bathtub cleaning apparatus according to the sixth aspect, the controller advances and retreats the nozzle by the advancing and retreating portion without ejecting the liquid in the second sticking prevention operation. be.

According to this bathtub cleaning device, in the second sticking prevention operation, the nozzle is advanced and retracted by the advancing and retreating portion without ejecting the liquid. can be periodically moved forward and backward to prevent the nozzle from sticking.

An eighth aspect of the invention is the bathtub according to the sixth or seventh aspect, wherein the controller controls the advancing/retreating part so as to increase an initial driving force when advancing the nozzle. Cleaning equipment.

According to this bathtub cleaning device, by increasing the initial driving force when advancing the nozzle, the nozzle can be smoothly advanced even when the nozzle is slightly stuck. As a result, it is possible to prevent the nozzle from being severely stuck.

In a ninth aspect of the invention, in any one of the sixth to eighth aspects of the invention, there is further provided an advance detection unit that detects advance of the nozzle, and the control unit performs control to advance the nozzle. The bathtub cleaning apparatus is characterized in that the advancement/retraction section is controlled so as to stop the advancement of the nozzle when the advancement detection section does not detect the advancement of the nozzle.

According to this bathtub washing device, if the advancement detection unit does not detect the advancement of the nozzle despite the control for advancing the nozzle, the advancement of the nozzle is stopped, so that the advance/retreat unit is operated in a state in which the nozzle does not advance. It can be suppressed to continue to operate. As a result, it is possible to suppress a secondary failure such as a failure of the advance/retreat portion due to sticking of the nozzle.

In a tenth aspect based on any one of the first to ninth aspects, the drive unit has a first position in which the nozzle retreats from the inside of the bathtub and a first position in which the nozzle advances into the inside of the bathtub. 2 position and a retractable portion for moving the nozzle forward and backward, and the anti-adherence portion includes a casing for accommodating the nozzle therein and a seal for closing a gap between the nozzle and the casing. a member, wherein the nozzle ejects the liquid toward the inner wall surface in the second position; and the sealing member is configured to seal the nozzle and the casing when the nozzle is in the first position. The bathtub cleaning device is characterized in that it is installed so as not to close the gap between the nozzle and the casing when the nozzle is in the second position.

According to this bathtub cleaning device, the gap between the nozzle and the casing is not blocked when the nozzle is at the first position (the position where the liquid is not jetted), and the nozzle is at the second position (the position where the liquid is jetted). A sealing member is provided so as to close the gap between the nozzle and the casing at certain times. As a result, when the liquid is ejected from the nozzle, the gap between the nozzle and the casing can be closed to suppress deterioration of the performance of ejecting the liquid from the nozzle, and when the liquid is not ejected from the nozzle, the nozzle and the casing can be closed. By not closing the gap between and, it is possible to prevent the nozzle from sticking with the sealing member.

An eleventh invention is the bathtub cleaning device according to the tenth invention, wherein the sealing member is attached to the nozzle.

According to this bathtub cleaning device, by attaching the sealing member to the nozzle, it is possible to improve the ease of assembly and the flexibility of the shape.

In a twelfth aspect based on the first aspect, the sticking prevention section includes a vibrating section for vibrating the nozzle and a control section for controlling the vibrating section, and the control section controls the nozzle to drive. The bathtub cleaning apparatus is characterized in that, when the non-cleaning period exceeds a predetermined period, a third anti-sticking operation of vibrating the nozzle by the vibrating section is performed.

According to this bathtub cleaning device, when the period in which the nozzle is not driven exceeds a predetermined period, the third sticking prevention operation is executed to vibrate the nozzle. It is possible to prevent the nozzle from sticking due to vibration.

According to an aspect of the present invention, there is provided a bathtub cleaning device capable of suppressing fixation of nozzles.

1 is a plan view schematically showing a bathtub system provided with a bathtub cleaning device according to an embodiment; FIG. BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing which represents typically the bathtub cleaning apparatus which concerns on embodiment. 1 is a block diagram schematically showing a bathtub cleaning device according to an embodiment; FIG. 4(a) and 4(b) are cross-sectional views schematically showing the periphery of the nozzle of the bathtub cleaning device according to the embodiment. It is a flow chart showing the operation of the bathtub cleaning device according to the embodiment. 4 is a flow chart showing the operation of the bathtub cleaning device according to the first embodiment; It is a flowchart showing operation|movement of the bathtub cleaning apparatus which concerns on 2nd Embodiment. FIGS. 8(a) and 8(b) are cross-sectional views schematically showing an enlarged view of the vicinity of the nozzle of the bathtub cleaning device according to the embodiment.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, in each drawing, the same reference numerals are given to the same constituent elements, and detailed description thereof will be omitted as appropriate.
FIG. 1 is a plan view schematically showing a bathtub system provided with a bathtub cleaning device according to an embodiment.
As shown in FIG. 1, the bathtub system 500 includes, for example, a bathtub 100 and a bathtub cleaning device 200. As shown in FIG.

The bathtub 100 is installed, for example, on the floor of the bathroom. The bathtub 100 is, for example, in the shape of a substantially rectangular parallelepiped box, and is open upward. The bathtub 100 has, for example, a horizontally long shape having long sides and short sides when viewed from above. Bathtub 100 has an inner wall surface 110 and an upper surface 130 . The inner wall surface 110 is the inner surface of the bathtub 100 . The upper surface 130 is a surface that extends outward from the upper end of the inner wall surface 110 .

The inner wall surface 110 has an inner bottom surface 111 positioned at the bottom of the inner wall surface 110 and an inner wall surface 112 positioned above the inner bottom surface 111 . The inner wall surface 112 includes, for example, a first inner wall surface 112a and a second inner wall surface 112b on the short side of the bathtub 100 in top view, and a third inner wall surface 112c and a fourth inner wall surface on the long side of the bathtub 100 in top view. 112d. The first inner wall surface 112a faces, for example, the second inner wall surface 112b. The third inner wall surface 112c faces, for example, the fourth inner wall surface 112d. The third inner wall surface 112c is located, for example, on the floor side of the washing area of the bathroom.

The inner bottom surface 111 is provided with a drain port 115 for discharging the liquid in the bathtub 100 downward. The drain port 115 is provided, for example, substantially in the center of the long side of the bathtub 100 when viewed from above. The drain port 115 is positioned, for example, closer to the floor of the bathroom washing area (that is, closer to the third inner wall surface 112c) than the center of the short side of the bathtub 100 when viewed from above. In other words, for example, the horizontal distance between the third inner wall surface 112 c and the drain port 115 is shorter than the horizontal distance between the fourth inner wall surface 112 d and the drain port 115 .

In this example, a detergent inlet 135 is provided on the upper surface 130 of the bathtub 100 . Detergent inlet 135 may be provided, for example, in a bath apron positioned closer to the floor of the washing area than inner wall surface 110 or third inner wall surface 112c of bathtub 100 . Detergent inlet 135 is connected to bathtub cleaning device 200 (a tank described later).

Also, in this example, the bathtub 100 has a step 140 . The step 140 is a step provided above the inner bottom surface 111 and below the top surface 130 inside the bathtub 100 (that is, inside the inner wall surface 110). The step 140 includes a step upper surface 141 extending inward from one of the inner wall surfaces 112 on the short side (the first inner wall surface 112 a in this example), and a step upper surface 141 extending from the inner end of the step upper surface 141 toward the inner bottom surface 111 . and an extending step side 142 . One ends of the step upper surface 141 and the step side surface 142 are connected to the third inner wall surface 112c. The other ends of the step upper surface 141 and the step side surface 142 are connected to the fourth inner wall surface 112d. Step 140 is optional and can be omitted.

Bathtub cleaning device 200 is provided in bathtub 100 . More specifically, a part of bathtub cleaning device 200 (for example, a nozzle described later) is provided on inner wall surface 110 of bathtub 100 . Another part of the bathtub cleaning device 200 (for example, each part other than the nozzle described later) is provided in the space between the bathtub 100 and the side wall surface of the bathroom and in the space below the bathtub 100 .

FIG. 2 is an explanatory diagram schematically showing the bathtub cleaning device according to the embodiment.
FIG. 3 is a block diagram schematically showing the bathtub cleaning device according to the embodiment.
As shown in FIGS. 2 and 3, the bathtub cleaning device 200 includes a tank 10, a detergent mixing section 20, a nozzle 30, an ejection control section 40, a drive section 50, and a control section 60.

The tank 10 is connected to a detergent input port 135 and stores detergent input from the detergent input port 135 . The tank 10 is provided with a water level detector 11 such as a float switch, for example.

The detergent mixing section 20 is provided downstream of the tank 10 and the water supply source WS. The detergent mixing unit 20 mixes the detergent supplied from the tank 10 and the water supplied from the water supply source WS to generate detergent water. In the specification of the present application, "water" includes not only cold water but also heated hot water. That is, the water supply source WS may have a water heater, for example.

The detergent mixing unit 20 is, for example, a tank that stores detergent water. The detergent mixing unit 20 , for example, stores detergent water when ejecting detergent water from the nozzle 30 and stores water when ejecting water from the nozzle 30 . The detergent mixing section 20 is provided with a water level detection section 21 such as a float switch, for example. Note that the detergent mixing unit 20 is not limited to this, and may be, for example, a venturi tube.

A detergent channel 15 is provided between the tank 10 and the detergent mixing section 20 . The detergent channel 15 connects the tank 10 and the detergent mixing section 20 . The detergent channel 15 is provided with, for example, an on-off valve 16 , a flow rate adjusting section 17 and a pump 18 .

The on-off valve 16 is, for example, an electromagnetic valve. The on-off valve 16 controls the supply of detergent to the detergent mixing section 20 . By opening the on-off valve 16 , the detergent stored in the tank 10 is supplied to the detergent mixing section 20 . By closing the on-off valve 16, the supply of detergent from the tank 10 to the detergent mixing section 20 is stopped.

The flow rate adjusting unit 17 is provided downstream of the on-off valve 16, for example. The flow rate adjuster 17 is, for example, an orifice. The flow rate adjusting section 17 adjusts the flow rate of the detergent flowing through the detergent channel 15 . The flow rate adjusting unit 17 is provided as necessary and can be omitted.

The pump 18 is provided downstream of the on-off valve 16 and the flow rate adjusting section 17, for example. The pump 18 sends the detergent in the detergent channel 15 to the detergent mixing section 20 .

A water supply channel 25 is provided between the water supply source WS and the detergent mixing section 20 . The water supply channel 25 connects the water supply source WS and the detergent mixing section 20 . The water supply channel 25 is provided with, for example, an on-off valve 26 and a flow rate adjusting section 27 .

The on-off valve 26 is, for example, an electromagnetic valve. The on-off valve 26 controls the supply of water to the detergent mixing section 20 . Water from the water supply source WS is supplied to the detergent mixing section 20 by opening the on-off valve 26 . By closing the on-off valve 26, the supply of water from the water supply source WS to the detergent mixing section 20 is stopped.

The flow rate adjusting unit 27 is provided downstream of the on-off valve 26, for example. The flow rate adjusting section 27 is, for example, a constant flow valve. The flow rate adjuster 27 adjusts the flow rate of water flowing through the water supply channel 25 .

Nozzle 30 is provided on inner bottom surface 111 or inner wall surface 112 of bathtub 100 . In this example, nozzle 30 is provided on inner bottom surface 111 of bathtub 100 . The nozzle 30 is provided, for example, substantially in the center of the long side of the bathtub 100 when viewed from above. The nozzle 30 is provided, for example, substantially in the center of the short side of the bathtub 100 when viewed from above.

Nozzle 30 has ejection port 31 . Jet port 31 jets liquid (detergent water or water) toward a portion of inner wall surface 112 of bathtub 100 . The nozzle 30 is drivably provided. The nozzle 30 is, for example, rotatable about the vertical direction (that is, horizontally). The nozzle 30 is not limited to this, and may be provided rotatably around the horizontal direction, for example. Hereinafter, the nozzle 30 that rotates about the vertical direction will be described as an example.

The nozzle 30 is provided, for example, so that the jet port 31 faces in a direction other than the first direction D1 from the nozzle 30 to the drain port 115 at a position where jetting of detergent water is started.

By providing the nozzle 30 in such an orientation, it is possible to prevent the detergent water jetted from the jet port 31 from being discharged to the drain port 115 as it is before the rotation of the nozzle 30 is started. In other words, the detergent water ejected from the ejection port 31 can be discharged from the drain port 115 through the inner bottom surface 111 of the bathtub 100 before the nozzle 30 starts rotating. As a result, even in the configuration in which the detergent water is jetted from the jet port 31 before the nozzle 30 starts rotating in order to suppress the occurrence of portions not covered with the detergent water, the route to the drain port 115 is extended. As a result, the water can be effectively used for cleaning the inner bottom surface 111 of the bathtub 100, and waste of detergent water can be suppressed.

In this example, the drain port 115 is provided in the direction from the nozzle 30 toward the third inner wall surface 112c. Therefore, in this example, the nozzle 30 can be provided so that the ejection port 31 faces the first inner wall surface 112a, the second inner wall surface 112b, or the fourth inner wall surface 112d at the position where the detergent solution starts to be ejected. preferable. Also, in this example, a step 140 is provided on the side of the first inner wall surface 112a. Therefore, in this example, it is more preferable that the nozzle 30 is provided so that the ejection port 31 faces the first inner wall surface 112a at the position where the ejection of detergent water is started.

The horizontal water discharge angle θ ₁ (see FIG. 1) of the liquid when the liquid is stably discharged from the jet nozzle 31 is, for example, the vertical water discharge angle θ ₂ (see FIG. 2). In other words, for example, the nozzle 30 (jet port 31) jets the liquid vertically. By ejecting the liquid vertically in this manner, a limited amount of liquid can be more efficiently spread over the entire inner wall surface 112 of the bathtub 100 .

The horizontal water discharge angle θ ₁ is obtained by capturing the shape of the liquid discharged stably from the nozzle 31 with a camera provided above the nozzle 30 for a predetermined period of time (for example, 1 second). It is possible to obtain the horizontal water discharge angle φ ₁ of the liquid within a predetermined time, and obtain the difference between this water discharge angle φ ₁ and the horizontal rotation angle φ ₂ of the nozzle 30 rotated within the predetermined time (θ ₁ = φ ₁ -φ ₂ ).

_The vertical water discharge angle θ2 is obtained from the vertical water discharge angle in the photographed image of the shape of the liquid discharged stably from the nozzle 31, which is photographed by a camera provided on the side of the nozzle 30. be able to.

The water discharge angle θ1 in the horizontal direction is preferably ₅ degrees or more and 30 degrees or less. It is preferable that the water discharge angle θ2 in the vertical direction is, for example, 30 degrees or _more and 180 degrees or less. It is preferable that the vertical water discharge angle θ2 when water is jetted is larger _than the vertical water discharge angle _θ2 when detergent water is jetted.

A cleaning channel 35 is provided between the detergent mixing section 20 and the nozzle 30 . The washing channel 35 connects the detergent mixing section 20 and the nozzle 30 . The cleaning flow path 35 is provided with, for example, an ejection control section 40 and a backflow prevention section 36 .

The ejection control unit 40 controls ejection of liquid from the ejection port 31 . The ejection control section 40 is provided downstream of the detergent mixing section 20 . The ejection control unit 40 is, for example, a pump. The ejection control unit 40 may be, for example, an on-off valve such as an electromagnetic valve. The ejection control unit 40 controls, for example, the instantaneous flow rate of liquid ejected from the ejection port 31 .

The backflow prevention section 36 is provided downstream of the ejection control section 40, for example. The backflow prevention part 36 prevents backflow of detergent water, water, waste water, etc. from the nozzle 30 to the detergent mixing part 20 . The backflow prevention part 36 is, for example, a check valve. The backflow prevention part 36 may be an on-off valve such as an electromagnetic valve. For example, a plurality of backflow prevention units 36 may be provided.

The driving section 50 drives the nozzle 30 . The driving unit 50 has, for example, a rotating unit 51 that rotates the nozzle 30 about the vertical direction. The rotating part 51 is, for example, a stepping motor. Although the rotating part 51 is not limited to this, it is desirable that the rotation speed can be controlled. The rotating part 51 may be, for example, a rotating mechanism that rotates the nozzle 30 by the reaction force of ejecting the liquid.

The control unit 60 is electrically connected to the ejection control unit 40 and the driving unit 50 (for example, the rotating unit 51 ), and controls the ejection control unit 40 and the driving unit 50 . More specifically, the control unit 60 controls the ejection control unit 40 to control the timing of starting and stopping ejection of the liquid from the ejection port 31 and the amount of ejection. Further, the control unit 60 controls the driving unit 50 to control the timing of starting and stopping the driving of the nozzles 30 and the driving speed. More specifically, the control unit 60 controls the rotation unit 51 to control the timing of starting and stopping rotation of the nozzle 30 and the rotation speed.

Further, the control unit 60 controls, for example, the opening/closing valve 16 of the detergent channel 15 and the opening/closing valve 26 of the water supply channel 25 . The control unit 60 controls the on-off valve 16 and the on-off valve 26 based on the detection result of the water level detection unit 21 of the detergent mixing unit 20, for example, so that the concentration and amount of the detergent water generated in the detergent mixing unit 20, Control the amount of water, etc.

Moreover, the bathtub cleaning device 200 may further include a rotation detector 56 that detects rotation of the nozzle 30 . The rotation detection unit 56 is, for example, a proximity sensor such as a Hall IC, a micro photo sensor, or the like. The rotation detection unit 56 is, for example, electrically connected to the control unit 60 and transmits detection results to the control unit 60 . Control using the rotation detector 56 will be described later.

Moreover, the bathtub cleaning device 200 may further include an advance detector 57 that detects the advance of the nozzle 30 . The advance detection unit 57 is, for example, a proximity sensor, a distance sensor, a surface pressure sensor, a displacement sensor, or the like. The advancing detection unit 57 is, for example, electrically connected to the control unit 60 and transmits detection results to the control unit 60 . Control using the advancement detection unit 57 will be described later.

In addition, in the embodiment, the bathtub cleaning device 200 includes an anti-sticking part 250 that prevents the nozzle 30 from sticking. For example, the control unit 60 functions as the sticking prevention unit 250 . By providing the sticking prevention part 250 in this way, it is possible to prevent the nozzle 30 from sticking while driving the nozzle 30 to allow the liquid to be ejected onto the entire inner wall surface 110 of the bathtub 100 . The sticking prevention portion 250 will be described later.

4(a) and 4(b) are cross-sectional views schematically showing the periphery of the nozzle of the bathtub cleaning device according to the embodiment.
FIG. 4A shows a state (standby state) in which liquid is not jetted from the nozzle 30 (jet port 31).
FIG. 4B shows a state (jet state) in which the liquid is jetted from the nozzle 30 (jet port 31).
As shown in FIGS. 4(a) and 4(b), the bathtub cleaning device 200 further includes a shaft portion 70, a casing 80, and a seal member 90. As shown in FIGS.

The shaft portion 70 is provided between the nozzle 30 and the rotating portion 51 . The shaft portion 70 transmits the torque of the rotating portion 51 (eg, stepping motor) to the nozzle 30 . For example, when the rotating portion 51 rotates clockwise, the shaft portion 70 and the nozzle 30 rotate clockwise. For example, when the rotating portion 51 rotates counterclockwise, the shaft portion 70 and the nozzle 30 rotate counterclockwise. The rotation axis of the shaft portion 70 is coaxial with the rotation axis of the rotating portion 51, for example.

The casing 80 is hollow, and accommodates the nozzle 30, the rotating portion 51, the shaft portion 70, and the sealing member 90 in the internal space. In this example, the casing 80 has a first space 81 and a second space 82 . The first space 81 is positioned inside the bathtub 100 , and the second space 82 is positioned outside the bathtub 100 . The nozzle 30 , the shaft portion 70 and the seal member 90 are housed in the first space 81 , and the rotating portion 51 is housed in the second space 82 . The casing 80 does not have to be divided into the first space 81 and the second space 82 .

The sealing member 90 closes the gap between the nozzle 30 and the casing 80 . The sealing member 90 is, for example, packing. In this example, the seal member 90 is attached to the nozzle 30 . By attaching the seal member 90 to the nozzle 30 in this way, it is possible to improve the ease of assembly and the degree of freedom in shape. The sealing member 90 may be attached to the casing 80, for example.

In the embodiment, the nozzle 30, the rotating portion 51, the shaft portion 70, the casing 80, and the sealing member 90 form a nozzle unit 180 in which the nozzle 30, the rotating portion 51, the shaft portion 70, and the sealing member 90 are housed in the casing 80. may be provided. The nozzle unit 180 is detachably attached to a nozzle unit holding portion 185 provided on the inner bottom surface 111 of the bathtub 100 . With such a structure, maintainability of the nozzle 30, the rotating portion 51, the shaft portion 70, the casing 80, and the seal member 90 can be improved.

As shown in FIG. 4( a ), in the standby state, the nozzle 30 is at a first position retracted from the interior of the bathtub 100 . On the other hand, as shown in FIG. 4B, in the jet state, the nozzle 30 is at the second position where it has advanced into the bathtub 100 . Thus, the nozzle 30 advances and retreats (advances and retreats) between the first position and the second position, and ejects the liquid toward the inner wall surface 112 in the state of advancing to the second position. In this example, nozzle 30 is provided on inner bottom surface 111 of bathtub 100 . That is, the second position is higher than the first position. In other words, the nozzle 30 moves up and down between the first position and the second position. Hereinafter, the inner side of the bathtub 100 will be described as the upper side, and the outer side of the bathtub 100 as the lower side.

The drive unit 50 further has an advancing/retreating part (elevating/retracting part) 52 for advancing/retreating the nozzle 30 . In this example, the advance/retreat portion 52 is a spring 85 that downwardly biases the storage space 83 provided inside the casing 80 and the nozzle 30 . The storage space 83 is a space provided below the nozzle 30 inside the casing 80 and capable of storing liquid. Liquid supplied from the cleaning flow path 35 is supplied to the nozzle 30 via this storage space 83 . The storage space 83 is, for example, part of the first space 81 .

When the liquid is ejected from the nozzle 30 (jet port 31 ), if the liquid is supplied from the cleaning channel 35 to the storage space 83 and the pressure inside the storage space 83 increases, the liquid will flow upward from the storage space 83 with respect to the nozzle 30 . There is a pushing force. When this upward force becomes greater than the downward force of the spring 85, the nozzle 30 rises (advances) from the first position toward the second position. On the other hand, when the pressure inside the storage space 83 increases due to the liquid, the liquid is ejected from the ejection port 31 . At this time, ejection of liquid from the ejection port 31 is started before the nozzle 30 reaches the second position. When the supply of the liquid from the cleaning channel 35 stops, the ejection of the liquid from the ejection port 31 stops. When the liquid in the storage space 83 decreases and the upward force pushing up the nozzle 30 becomes smaller than the downward force of the spring 85, the nozzle 30 descends (retreats) from the second position toward the first position. .

By using such an advancing/retreating portion 52, the nozzle 30 can be advanced/retracted without providing a driving mechanism such as a motor. Therefore, the area around the nozzle 30 can be made smaller, and maintenance of the area around the nozzle 30 can be improved.

Note that the advance/retreat portion 52 is not limited to this, and may be an actuator such as a motor or a solenoid that advances/retreats the nozzle 30 . When the advance/retreat portion 52 is an actuator, the advance/retreat portion 52 is electrically connected to, for example, the control portion 60 and controlled by the control portion 60 .

FIG. 5 is a flow chart showing the operation of the bathtub cleaning device according to the embodiment.
As shown in FIG. 5, the controller 60 can execute a main cleaning mode and a rinsing mode.

This washing mode is a mode in which the detergent water of the first concentration is jetted from the nozzle 30 (jet port 31). By executing this cleaning mode, dirt such as sebum and keratin adhering to the inner wall surface 110 of the bathtub 100 can be easily peeled off. In addition, in this cleaning mode, dirt such as sebum and keratin adhering to the inner wall surface 110 of the bathtub 100 and a part of attachments such as hair can be washed off. The first concentration is preferably 1% by volume or more and 30% by volume or less in terms of surfactant concentration.

The rinse mode is a mode in which water is ejected from the nozzle 30 (jet port 31). The rinse mode is executed after the main wash mode. By executing the rinsing mode after the main washing mode, the detergent water sprayed in the main washing mode and dirt such as sebum and keratin peeled off by the detergent water can be washed off. In addition, the rinsing mode can wash off adherents such as hair adhering to the inner wall surface 110 of the bathtub 100 .

Also, the control unit 60 can further execute a pre-cleaning mode. The pre-cleaning mode is a mode in which water or detergent water having a second concentration lower than the first concentration is ejected from the nozzle 30 (jet port 31). By executing the pre-cleaning mode before the main cleaning mode, it is possible to wash off deposits such as hair adhering to the inner wall surface 110 of the bathtub 100 in advance, so that the cleaning performance in the main cleaning mode can be improved. can. In addition, it is preferable that the second concentration is more than 0% by volume and 29% by volume or less in terms of surfactant concentration. A pre-cleaning mode is performed as needed and can be omitted.

The flow of bath cleaning shown in FIG. 5 will be described below.
When the user executes a bathtub cleaning operation using a remote control or the like (step S101), the control unit 60 drains the water in the bathtub 100 from the drain port 115 (step S102). For example, the bathtub 100 is provided with a water level detector for detecting the water level inside the bathtub 100 . For example, when a predetermined time has passed since the water level reached the lowest level detectable by the water level detection unit (or after the water level detection unit did not detect the water level), it can be considered that the water discharge has ended.

Next, the controller 60 executes the pre-cleaning mode (step S103). In the pre-cleaning mode, control unit 60 sprays detergent water or water toward inner wall surface 110 of bathtub 100 . More specifically, the control unit 60 controls the ejection control unit 40 to eject detergent water or water from the ejection port 31 of the nozzle 30 toward a part of the inner wall surface 112 of the bathtub 100, and rotate the rotation unit. 51 to rotate the nozzle 30 . As a result, detergent water or water can be sprayed over the entire inner wall surface 112 . For example, the control unit 60 rotates the nozzle 30 multiple times so that the predetermined range of the inner wall surface 112 is sprayed with detergent water or water two or more times.

In the pre-cleaning mode, the controller 60 rotates the nozzle 30 clockwise at a rotation speed of 30 seconds/rotation while ejecting detergent water or water at an instantaneous ejection flow rate of, for example, 1000 mL/min. When the nozzle 30 rotates once, the control unit 60 rotates the nozzle 30 counterclockwise at the same rotation speed while ejecting detergent water or water at the same instantaneous ejection flow rate. By repeating this set of clockwise and counterclockwise rotations twice, detergent water or water can be applied to a predetermined range of the inner wall surface 112 four times. The control unit 60 rotates the nozzle 30 once in a state in which detergent water or water is jetted, then rotates the nozzle 30 in the reverse direction in a state in which the detergent water or water is not jetted to return to the jetting start position, and then returns to the jetting start position. You may repeat rotating the nozzle 30 in the state which sprayed detergent water or water. Further, the control unit 60 may continuously rotate the nozzle 30 clockwise or counterclockwise multiple times while ejecting detergent water or water. Note that the instantaneous ejection flow rate, the rotation speed of the nozzle 30, and the number of rotations of the nozzle 30 in the pre-cleaning mode can be adjusted as appropriate.

In the pre-cleaning mode, the controller 60 ejects a total of about 2000 mL of detergent water or water from the nozzle 30 (jet port 31), for example. In the pre-cleaning mode, the control unit 60 may jet the detergent water or water in a plurality of times. In other words, in the pre-cleaning mode, the controller 60 may alternately execute a state in which detergent water or water is jetted (jetting state) and a state in which detergent water or water is not jetted (standby state), for example. .

Next, the controller 60 executes the main cleaning mode (step S104). In this cleaning mode, control unit 60 sprays detergent water toward inner wall surface 110 of bathtub 100 . More specifically, the control unit 60 controls the ejection control unit 40 to eject detergent water from the ejection port 31 of the nozzle 30 toward a portion of the inner wall surface 112 of the bathtub 100, and rotate the rotating unit 51. Control to rotate the nozzle 30 . As a result, the detergent water can be sprayed all over the inner wall surface 112 . For example, the control unit 60 rotates the nozzle 30 multiple times so that the predetermined range of the inner wall surface 112 is sprayed with the detergent water two or more times.

In this cleaning mode, the controller 60 rotates the nozzle 30 clockwise at a speed of 45 seconds to 12 seconds/rotation while ejecting detergent water at an instantaneous ejection flow rate of 400 mL/minute, for example. After the nozzle 30 makes one turn, the control unit 60 rotates the nozzle 30 counterclockwise to return it to the ejection start position without ejecting detergent water, and waits until a predetermined time elapses. The control unit 60 may rotate the nozzle 30 clockwise to return it to the ejection start position without ejecting the detergent water. After a predetermined time has elapsed, the controller 60 again rotates the nozzle 30 clockwise at the same rotation speed while ejecting the detergent water at the same instantaneous ejection flow rate. For example, by repeating this set of clockwise and counterclockwise rotations three times, the predetermined range of the inner wall surface 112 can be sprayed with detergent water three times. Note that the instantaneous ejection flow rate and the rotation speed of the nozzle 30 in this cleaning mode can be adjusted as appropriate. For example, at least one of the instantaneous ejection flow rate and the rotation speed of the nozzle 30 may be changed while the nozzle 30 is rotated once. The number of rotations of the nozzle 30 in the main cleaning mode can be adjusted as appropriate, but is preferably about three in order to efficiently spray a limited amount of detergent water.

In the main cleaning mode, the controller 60 ejects a total of approximately 500 mL of detergent water from the nozzle 30 (jet port 31), for example. Further, as described above, in the main cleaning mode, the control unit 60 may, for example, jet the detergent water in several batches. In other words, in the main cleaning mode, the controller 60 may alternately execute a state in which the detergent water is jetted (jetting state) and a state in which the detergent water is not jetted (standby state), for example.

In this manner, in the main washing mode, the nozzle 30 is driven (for example, rotated) while the detergent water is jetted from the jet port 31 toward a portion of the inner wall surface 112 of the bathtub 100, thereby cleaning a limited amount of water. The detergent water can be efficiently sprayed over the entire inner wall surface 112 of the bathtub 100.例文帳に追加

In addition, in this cleaning mode, it is preferable that the movable range in which the nozzle 30 rotates is larger than 360 degrees and 390 degrees or less. More preferably, it is about 375 degrees. By rotating the nozzle 30 at such an angle, it is possible to further suppress the occurrence of a portion on the inner wall surface 112 of the bathtub 100 that is not exposed to the detergent water.

Next, the controller 60 executes the rinse mode (step S105). In the rinse mode, controller 60 sprays water toward inner wall surface 110 of bathtub 100 . More specifically, the control unit 60 controls the ejection control unit 40 to eject water from the ejection port 31 of the nozzle 30 toward a part of the inner wall surface 112 of the bathtub 100, and controls the rotation unit 51. to rotate the nozzle 30. Thereby, water can be sprinkled over the entire inner wall surface 112 . For example, the control unit 60 rotates the nozzle 30 multiple times so that a predetermined range of the inner wall surface 112 is sprayed with water two or more times.

In the rinsing mode, the controller 60 rotates the nozzle 30 clockwise at a rotational speed of 30 seconds/lap while ejecting water at an instantaneous ejection flow rate of, for example, 1000 mL/min. When the nozzle 30 rotates once, the controller 60 rotates the nozzle 30 counterclockwise at the same rotational speed while ejecting water at the same instantaneous ejection flow rate. For example, by repeating this set of clockwise and counterclockwise rotations three times, a predetermined range of the inner wall surface 112 can be sprinkled with water six times. After rotating the nozzle 30 once in a state in which water is ejected, the control unit 60 reversely rotates the nozzle 30 in a state in which water is not ejected, returns to the ejection start position, and then ejects water again. , rotating the nozzle 30 may be repeated. Further, the control unit 60 may continuously rotate the nozzle 30 multiple times in the same direction while ejecting water. Note that the instantaneous ejection flow rate, the rotation speed of the nozzle 30, and the number of rotations of the nozzle 30 in the rinse mode can be adjusted as appropriate.

In the rinsing mode, the control unit 60 ejects approximately 3000 mL of water in total from the nozzle 30 (jet port 31), for example. In the rinsing mode, the control unit 60 may, for example, jet water in multiple batches. In other words, in the rinsing mode, the controller 60 may alternately execute a state of jetting water (jetting state) and a state of not jetting water (standby state), for example.

In the pre-cleaning mode and the rinsing mode, the range of motion in which the nozzle 30 rotates is, for example, the same as the range of motion in which the nozzle 30 rotates in the main cleaning mode.

Also, the operation in step S101 may be an operation of draining water. That is, when the user executes a drain operation using a remote control or the like (step S101), the control unit 60 drains the water in the bathtub 100 from the drain port 115 (step S102), and then cleans the bathtub 100 (step S103). to S105) may be executed.

Also, in the pre-cleaning mode and the main cleaning mode, the detergent water ejected from the nozzle 30 (jet port 31 ) and used for cleaning flows to the drain port 115 . In the pre-cleaning mode and the main cleaning mode, the detergent water flowing to the drain port 115 may be discharged from the drain port 115 as it is, or may be recovered by a recovery mechanism (not shown) without being discharged from the drain port 115 and reused for cleaning. may be utilized. In other words, the bathtub cleaning device 200 may be of a detergent recovery type or of a detergent non-recovery type.

In the embodiment, the bathtub cleaning device 200 includes an anti-sticking part 250 that prevents the nozzle 30 from sticking. The sticking prevention portion 250 will be described in detail below.

FIG. 6 is a flow chart showing the first sticking prevention operation of the bathtub cleaning device according to the embodiment.
As shown in FIG. 6, the control unit 60 starts counting the period during which the nozzle 30 does not rotate (step S201). When the period during which the nozzle 30 does not rotate exceeds the predetermined period (step S202: Yes), the control unit 60 executes the first sticking prevention operation to rotate the nozzle 30 by the rotating unit 51 (step S203). The control unit 60 continues counting the period during which the nozzle 30 does not rotate until the period during which the nozzle 30 does not rotate exceeds a predetermined period (step S202: No). After executing the first sticking prevention operation, the control unit 60 resets the count of the period during which the nozzle 30 does not rotate (step S204).

For example, when the rinsing mode of bathtub cleaning is completed, the control unit 60 starts counting the period during which the nozzle 30 does not rotate. That is, the flow shown in FIG. 6 is triggered by the end of the flow shown in FIG. 5, for example. Further, after resetting the counting of the period during which the nozzle 30 does not rotate in the first sticking prevention operation, the control unit 60 may restart counting the period during which the nozzle 30 does not rotate. That is, the flow shown in FIG. 6 may be started with the end of the flow shown in FIG. 6 as a trigger.

Note that the control unit 60 may perform the first sticking prevention operation, for example, when the period during which the liquid is not ejected from the nozzle 30 exceeds a predetermined period.

Moreover, the predetermined period in the first sticking prevention operation can be an arbitrary period. The predetermined period may be, for example, one day (24 hours) or one week (7 days).

In this way, when the driving section 50 has the rotating section 51, the control section 60 can perform the first sticking prevention operation. When the period during which the nozzle 30 does not rotate (or the period during which liquid is not ejected from the nozzle 30) exceeds a predetermined period, the first sticking prevention operation is performed to rotate the nozzle 30. , the nozzle 30 can be rotated periodically to prevent the nozzle 30 from sticking.

In the first sticking prevention operation, the control unit 60 may continuously rotate the nozzle 30 in the same direction, or alternately rotate the nozzle 30 clockwise and rotate the nozzle 30 counterclockwise. You can go alternately. When the operation of rotating the nozzle 30 clockwise and the operation of rotating the nozzle 30 counterclockwise are alternately performed, the control unit 60 rotates the nozzle 30 by less than one turn (for example, 90 degrees or more and 180 degrees or less). ) is preferably switched.

If the rotating part 51 is a motor (for example, a stepping motor), the control part 60 may rotate the nozzle 30 by the motor without jetting the liquid in the first sticking prevention operation, for example. In this way, in the first sticking prevention operation, the nozzle 30 is rotated by the motor without ejecting the liquid, so that even if the nozzle 30 does not rotate for a long period of time, the amount of liquid used can be suppressed and the nozzle 30 can be regularly rotated. It is possible to prevent the nozzle 30 from sticking due to the rotation.

Further, for example, the control unit 60 may control the rotating unit 51 so that the initial driving force increases when rotating the nozzle 30 in the first sticking prevention operation. More specifically, for example, in the first sticking prevention operation, the control unit 60 can execute a first rotation state in which the nozzle 30 is started to rotate, and a second rotation state executed after the first rotation state. and controls the rotating portion 51 so that the driving force in the first rotating state is greater than the driving force in the second rotating state. For example, the control unit 60 controls the rotation unit 51 so that the rotation speed of the motor in the first rotation state is lower than the rotation speed of the motor in the second rotation state. It can be made larger than the driving force in the two-rotation state. For example, the control unit 60 rotates the nozzle 30 in the first rotation state after the nozzle 30 starts rotating until the nozzle 30 makes one revolution. For example, the control unit 60 may rotate the nozzle 30 in the first rotation state for several seconds to several tens of seconds after the nozzle 30 starts rotating.

By increasing the initial driving force when rotating the nozzle 30 in this manner, the nozzle 30 can be rotated smoothly even when the nozzle 30 is slightly stuck. Thereby, it can suppress that the nozzle 30 adheres severely.

For example, if the rotating part 51 is a motor, the driving force for rotating the nozzle 30 can be adjusted by the output of the motor. More specifically, by increasing the output of the motor, the driving force for rotating the nozzle 30 can be increased. Further, for example, when the motor is controlled by pulse control, the output (torque) of the motor can be increased by lowering the pulse frequency.

It is preferable that the control unit 60 performs control to increase the initial driving force when rotating the nozzle 30 when rotating the nozzle 30 in the bathtub cleaning operation.

Further, when the bathtub cleaning device 200 is provided with the rotation detection unit 56 for detecting the rotation of the nozzle 30, the control unit 60 may control the rotation unit 51 based on the detection result from the rotation detection unit 56. good. More specifically, for example, the control unit 60 stops the rotation of the nozzle 30 when the rotation detection unit 56 does not detect the rotation of the nozzle 30 even though the nozzle 30 is controlled to rotate. The rotating part 51 may be controlled.

In this way, by stopping the rotation of the nozzle 30 when the rotation detection unit 56 does not detect the rotation of the nozzle 30 despite the control to rotate the nozzle 30, the rotating unit can be detected in a state in which the nozzle 30 does not rotate. 51 can be suppressed. As a result, a secondary failure such as a failure of the rotating portion 51 due to the fixation of the nozzle 30 can be suppressed.

The control of the rotating portion 51 by the control portion 60 based on the detection result of the rotation detecting portion 56 may be performed when the first sticking prevention operation is performed, or when the nozzle 30 is rotated during the bathtub cleaning operation. You can go on occasion.

FIG. 7 is a flow chart showing the second sticking prevention operation of the bathtub cleaning device according to the embodiment.
As shown in FIG. 7, the control unit 60 starts counting the period during which the nozzle 30 does not advance or retreat (step S301). When the period during which the nozzle 30 does not advance or retreat exceeds a predetermined period (step S302: Yes), the control section 60 performs a second sticking prevention operation in which the nozzle 30 advances or retreats by the advance/retreat section 52 (step S303). The control unit 60 continues counting the period in which the nozzle 30 does not advance or retreat until the period in which the nozzle 30 does not advance or retreat exceeds a predetermined period (step S302: No). After executing the second sticking prevention operation, the control unit 60 resets the count of the period during which the nozzle 30 does not advance or retreat (step S304).

For example, when the rinsing mode of bathtub cleaning ends, the control unit 60 starts counting the period during which the nozzle 30 does not advance or retreat. That is, the flow shown in FIG. 7 is triggered by the end of the flow shown in FIG. 5, for example. Further, after resetting the count of the period during which the nozzle 30 does not advance or retreat in the second sticking prevention operation, the control unit 60 may restart counting the period during which the nozzle 30 does not advance or retreat. That is, the flow shown in FIG. 7 may be started with the end of the flow shown in FIG. 7 as a trigger.

Note that the control unit 60 may perform the second sticking prevention operation, for example, when the period during which the liquid is not ejected from the nozzle 30 exceeds a predetermined period.

Also, the predetermined period in the second sticking prevention operation can be any period. The predetermined period may be, for example, one day (24 hours) or one week (7 days).

In this way, when the drive section 50 has the retractable section 52, the control section 60 can perform the second sticking prevention operation. When the period during which the nozzle 30 does not move forward or backward (or the period during which the liquid is not ejected from the nozzle 30) exceeds a predetermined period, the second anti-sticking operation is executed to move the nozzle 30 forward or backward. , it is possible to prevent the nozzle 30 from sticking by periodically advancing and retreating the nozzle 30 .

In the second sticking prevention operation, the control unit 60 may advance or retreat the nozzle 30 continuously, or alternately perform the operation of advancing the nozzle 30 and the operation of retreating the nozzle 30 . When the operation of advancing the nozzle 30 and the operation of retracting the nozzle 30 are alternately performed, the control unit 60 preferably switches the advancement and retraction of the nozzle 30, for example, every 10 mm in the movement direction.

When the advancing/retreating portion 52 is an actuator, the control portion 60 may advance/retreat the nozzle 30 by using the advancing/retreating portion 52 without ejecting the liquid in the second sticking prevention operation, for example. As described above, in the second sticking prevention operation, the nozzle 30 is advanced and retracted by the advancing and retracting portion 52 without ejecting the liquid. can be periodically moved forward and backward to prevent the nozzle 30 from sticking.

Further, the control unit 60 may control the advancing/retreating part 52 so that the initial driving force increases when advancing the nozzle 30 in the second sticking prevention operation, for example. More specifically, for example, in the second sticking prevention operation, the control unit 60 can execute a first advance state in which the nozzle 30 starts to advance, and a second advance state that is executed after the first advance state. and controls the advancing/retreating portion 52 such that the driving force in the first advanced state is greater than the driving force in the second advanced state. For example, the control unit 60 controls the advance/retreat unit 52 so that the advance speed in the first advance state is lower than the advance speed in the second advance state, thereby increasing the driving force in the first advance state to that in the second advance state. It can be greater than the driving force. For example, the control unit 60 advances the nozzle 30 in the first advanced state for several seconds after the nozzle 30 starts advancing.

By increasing the initial driving force when advancing the nozzle 30 in this manner, the nozzle 30 can be advanced without delay even when the nozzle 30 is slightly stuck. Thereby, it can suppress that the nozzle 30 adheres severely.

For example, when the advancing/retreating part 52 is a spring 85 that urges the nozzle 30 downward and the reservoir space 83 provided inside the casing 80, the driving force for advancing the nozzle 30 is supplied to the reservoir space 83, for example. can be adjusted by the instantaneous flow rate (flow velocity) of the liquid being applied. In other words, the driving force for advancing the nozzle 30 can be adjusted by the output of the ejection control section 40 (for example, pump). More specifically, by increasing the output of the ejection control unit 40, the driving force for advancing the nozzle 30 can be increased.

Further, for example, if the advancing/retreating portion 52 is an actuator, the driving force for advancing the nozzle 30 can be adjusted by the output of the actuator. More specifically, by increasing the output of the actuator, the driving force for advancing the nozzle 30 can be increased.

It is preferable that the control unit 60 performs control to increase the initial driving force when advancing the nozzle 30 when advancing the nozzle 30 in the bathtub cleaning operation.

Further, when the bathtub cleaning device 200 is provided with an advance detection unit 57 that detects the advance of the nozzle 30, the control unit 60 may control the advance/retreat unit 52 based on the detection result from the advance detection unit 57. good. More specifically, for example, the control unit 60 stops the advance of the nozzle 30 when the advance detection unit 57 does not detect the advance of the nozzle 30 even though the nozzle 30 has been controlled to advance. The advance/retreat portion 52 may be controlled.

In this way, by stopping the advance of the nozzle 30 when the advance detection unit 57 does not detect the advance of the nozzle 30 despite the control to advance the nozzle 30, the advance/retreat unit is operated in a state where the nozzle 30 does not advance. 52 can be suppressed. As a result, a secondary failure such as a failure of the advance/retreat portion 52 caused by the sticking of the nozzle 30 can be suppressed.

Note that the control of the advance/retreat portion 52 by the control portion 60 based on the detection result of the advance detection portion 57 may be performed when the second sticking prevention operation is executed, or the nozzle 30 is advanced during the bathtub cleaning operation. You can go on occasion.

In an embodiment, the bathtub cleaning device 200 may include a vibrating section that vibrates the nozzle 30, and the control section 60 may control the vibrating section. In this case, when the period during which the nozzle 30 is not driven exceeds the predetermined period, the control section 60 performs the third sticking prevention operation in which the vibrating section vibrates the nozzle 30 . In this way, by executing the third sticking prevention operation of vibrating the nozzle 30 when the period in which the nozzle 30 is not driven exceeds a predetermined period, the nozzle 30 can be periodically operated even when the nozzle 30 is not driven for a long period of time. It is possible to prevent the nozzle 30 from sticking due to vibration. Thus, the sticking prevention section 250 may have the vibrating section and the control section 60 .

In addition, in the third sticking prevention operation, the vibrating section may vibrate the nozzle 30 directly, or may vibrate the nozzle 30 via the driving section 50 by vibrating the driving section 50 .

The first anti-sticking operation, the second anti-sticking operation, and the third anti-sticking operation are preferably performed while the user is not inside the bathtub 100 . The first anti-sticking operation, the second anti-sticking operation, and the third anti-sticking operation can be performed, for example, at night (when the user is sleeping), during the day (when the user is out), or when the user is on a timer. will be executed at the time set in In addition, for example, statistics of usage conditions for 10 days are taken, a time period during which the user does not use the bathtub 100 is acquired by automatic learning, and the first anti-adhesion operation, the second anti-adhesion operation, or the second anti-adhesion operation is performed during the time period. 3 An anti-sticking operation may be performed.

Further, the control unit 60 may notify the user when executing the first sticking prevention operation, the second sticking prevention operation, and the third sticking prevention operation. The notification means may be, for example, an audio notification such as a buzzer or an announcement, or a visual notification such as lighting of an LED.

Thus, in the embodiment, the control unit 60 can suppress sticking of the nozzle 30 by performing at least one of the first sticking prevention operation, the second sticking prevention operation, and the third sticking prevention operation, for example. . That is, the control unit 60 functions as the sticking prevention unit 250, for example. In other words, the sticking prevention unit 250 has the control unit 60, for example. In addition, in the embodiment, the control unit 60 may perform two or all three of the first sticking prevention operation, the second sticking prevention operation, and the third sticking prevention operation.

FIGS. 8(a) and 8(b) are cross-sectional views schematically showing an enlarged view of the vicinity of the nozzle of the bathtub cleaning device according to the embodiment.
FIG. 8(a) is an enlarged view of the area A shown in FIG. 4(a).
FIG. 8(b) is an enlarged view of region B shown in FIG. 4(b).
As shown in FIGS. 8(a) and 8(b), the sealing member 90 is, for example, a seal between the nozzle 30 and the casing 80 when the nozzle 30 is in the first position as shown in FIG. 8(a). It is provided so as to close the gap between the nozzle 30 and the casing 80 when the nozzle 30 is in the second position as shown in FIG. 8(b) without closing the gap therebetween.

In this example, the seal member 90 is attached to the nozzle 30 . More specifically, the seal member 90 is attached to the side portion 30 a of the nozzle 30 . The casing 80 has a side portion 80a and an upper portion 80b. The seal member 90 has a side portion 90a and an upper portion 90b. A side portion 80 a of the casing 80 faces a side portion 90 a of the seal member 90 . The upper portion 80b of the casing 80 faces the upper portion 90b of the seal member 90. As shown in FIG.

The seal member 90 is provided, for example, so that a gap is formed between the side portion 90a of the seal member 90 and the side portion 80a of the casing 80. As shown in FIG. In other words, the sealing member 90 is provided so that the side portion 90a of the sealing member 90 does not contact the side portion 80a of the casing 80, for example.

Also, in the sealing member 90, for example, when the nozzle 30 is in the first position as shown in FIG. is in the second position as shown in FIG. 8(b). In other words, the sealing member 90 is such that, for example, the upper portion 90b of the sealing member 90 does not contact the upper portion 80b of the casing 80 when the nozzle 30 is in the first position, and the sealing member 90 is closed when the nozzle 30 is in the second position. An upper portion 90b of the member 90 is provided so as to abut against an upper portion 80b of the casing 80. As shown in FIG.

In this way, the gap between the nozzle 30 and the casing 80 is not closed when the nozzle 30 is at the first position (the position where the liquid is not jetted), and the nozzle 30 is at the second position (the position where the liquid is jetted). By providing the seal member 90 so as to close the gap between the nozzle 30 and the casing 80 at certain times, the gap between the nozzle 30 and the casing 80 is closed when the liquid is ejected from the nozzle 30, thereby preventing the flow of liquid from the nozzle 30. The nozzle 30 can be fixed by the sealing member 90 by not closing the gap between the nozzle 30 and the casing 80 when the nozzle 30 does not eject the liquid while suppressing deterioration of the liquid ejection performance. can be suppressed.

Note that the sealing member 90 may be attached to the casing 80, for example. When the sealing member 90 is attached to the casing 80, the sealing member 90 is attached to the upper portion 80b of the casing 80, for example.

In this case, the seal member 90 is provided, for example, so that a gap is formed between the side portion 90 a of the seal member 90 and the side portion 30 a of the nozzle 30 . In other words, the sealing member 90 is provided, for example, so that the side portion 90a of the sealing member 90 does not contact the side portion 30a of the nozzle 30 .

Also, in this case, the seal member 90 has a gap between the lower portion 90c of the seal member 90 and the edge portion 30b of the nozzle 30, for example, when the nozzle 30 is at the first position, and the nozzle 30 is at the second position. It is provided so that there is no gap between the lower portion 90c of the seal member 90 and the edge portion 30b of the nozzle 30 at certain times. In other words, the seal member 90 is configured such that, for example, the lower portion 90c of the seal member 90 does not contact the edge portion 30b of the nozzle 30 when the nozzle 30 is in the first position, and the edge portion 30b of the nozzle 30 is in the second position. A lower portion 90 c of the seal member 90 is provided so as to abut against the edge portion 30 b of the nozzle 30 .

By adopting such a structure, even when the sealing member 90 is attached to the casing 80, the sealing member 90 is positioned between the nozzle 30 and the casing 80 when the nozzle 30 is in the first position (the position where the liquid is not ejected). The sealing member 90 can close the gap between the nozzle 30 and the casing 80 when the nozzle 30 is in the second position (the position where the liquid is ejected) without closing the gap therebetween.

Thus, in the embodiment, for example, the structure of the casing 80 and the sealing member 90 can prevent the nozzle 30 from sticking. In other words, the casing 80 and the sealing member 90 function as an anti-adherence portion 250, for example. In other words, the anti-sticking part 250 has, for example, the casing 80 and the sealing member 90 .

The embodiments of the present invention have been described above. However, the invention is not limited to these descriptions. Appropriate design changes made by those skilled in the art with respect to the above embodiments are also included in the scope of the present invention as long as they have the features of the present invention. For example, the shape, size, material, arrangement, and the like of each element included in the bathtub cleaning device are not limited to those illustrated and can be changed as appropriate.
Moreover, each element provided in each of the above-described embodiments can be combined as long as it is technically possible, and a combination of these is also included in the scope of the present invention as long as it includes the features of the present invention.

10 tank 11 water level detector 15 detergent channel 16 open/close valve 17 flow rate adjuster 18 pump 20 detergent mixing section 21 water level detector 25 water supply channel 26 open/close valve 27 flow rate adjuster 30 Nozzle 30a side portion 30b edge portion 31 ejection port 35 washing channel 36 backflow prevention portion 40 ejection control portion 50 drive portion 51 rotation portion 52 advance/retreat portion 56 rotation detection portion 57 advancing detection portion , 60 control section, 70 shaft section, 80 casing, 80a side section, 80b upper section, 81 first space, 82 second space, 83 storage space, 85 spring, 90 sealing member, 90a side section, 90b upper section, 90c Lower part 100 Bathtub 110 Inner wall surface 111 Inner bottom surface 112 Inner wall surface 112a to 112d First to fourth inner wall surfaces 115 Drain port 130 Top surface 135 Detergent inlet 140 Step 141 Top surface of step 142 Side surface of step , 180 nozzle unit, 185 nozzle unit holder, 200 bathtub cleaning device, 500 bathtub system, D1 first direction, WS water supply source

Claims (12)

a nozzle provided on the inner bottom surface or the inner wall surface of the bathtub for ejecting liquid toward the inner wall surface;
a drive unit for driving the nozzle;
a sticking prevention part for preventing sticking of the nozzle;
A bathtub cleaning device comprising: The drive unit has a rotating unit that rotates the nozzle,
The sticking prevention unit has a control unit that controls the rotation unit,
2. The bathtub cleaning apparatus according to claim 1, wherein, when a period in which the nozzle does not rotate exceeds a predetermined period, the control section performs a first anti-sticking operation of rotating the nozzle by the rotating section. The rotating part is a motor,
3. The bathtub cleaning apparatus according to claim 2, wherein, in the first sticking prevention operation, the control unit rotates the nozzle by the motor without ejecting the liquid. 4. The bathtub cleaning apparatus according to claim 2, wherein the controller controls the rotating part so that an initial driving force increases when rotating the nozzle. Further comprising a rotation detection unit that detects rotation of the nozzle,
The control unit controls the rotation unit to stop rotation of the nozzle when the rotation detection unit does not detect the rotation of the nozzle even though the control to rotate the nozzle has been performed. The bathtub cleaning device according to any one of claims 2 to 4. The drive unit has an advance/retreat unit that advances and retreats the nozzle into and out of the bathtub,
The sticking prevention unit has a control unit that controls the advancing/retreating unit,
6. The controller according to any one of claims 1 to 5, wherein, when a period in which the nozzle is not advanced or retracted exceeds a predetermined period, the control section performs a second sticking prevention operation in which the nozzle is advanced or retracted by the advancing and retracting section. 1. The bathtub cleaning device according to 1. 7. The bathtub cleaning apparatus according to claim 6, wherein, in the second sticking prevention operation, the controller advances and retreats the nozzle by the advancing and retreating portion without ejecting the liquid. 8. The bathtub cleaning apparatus according to claim 6, wherein the control unit controls the advance/retreat unit so as to increase an initial driving force when advancing the nozzle. further comprising an advance detection unit that detects advance of the nozzle,
The control unit may control the advancement/retraction unit to stop the advancement of the nozzle when the advancement detection unit does not detect the advancement of the nozzle despite having performed control to advance the nozzle. The bathtub cleaning device according to any one of claims 6 to 8. The drive unit has an advance/retreat portion that advances and retreats the nozzle between a first position where the nozzle is retreated from the inside of the bathtub and a second position where the nozzle is advanced inside the bathtub,
The sticking prevention part has a casing that houses the nozzle inside, and a seal member that closes a gap between the nozzle and the casing,
the nozzle ejects the liquid toward the inner wall surface at the second position;
The sealing member does not block a gap between the nozzle and the casing when the nozzle is at the first position, and is between the nozzle and the casing when the nozzle is at the second position. The bathtub cleaning device according to any one of claims 1 to 9, characterized in that it is provided so as to close the gap between the two. 11. The bathtub cleaning device according to claim 10, wherein the sealing member is attached to the nozzle. The sticking prevention unit has a vibrating unit that vibrates the nozzle and a control unit that controls the vibrating unit,
2. The bathtub cleaning apparatus according to claim 1, wherein, when a period in which the nozzle is not driven exceeds a predetermined period, the control section performs a third sticking prevention operation in which the vibrating section vibrates the nozzle.

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