JP2021065457A - Bathtub washing device - Google Patents

Abstract

To provide a bathtub washing device which can make detergent water attach to an inner wall surface of a bathtub without moving a nozzle body in a vertical direction.SOLUTION: A bathtub washing device 10 in the invention which automatically washes a bathtub with a detergent includes a casing 16 provided on a bottom surface 2 of the bathtub 1, a nozzle body 14 which is provided inside the casing and includes a jetting port 62 for jetting detergent water to an inner wall surface of the bathtub, and an electric motor 18 for rotating the nozzle body. The jetting port of the nozzle body is formed to jet the detergent water obliquely upward and is provided in a position lower than an upper surface of the casing in jetting the detergent water. The casing and the nozzle body are formed not to interfere with the detergent water jetted from the jetting port.SELECTED DRAWING: Figure 7

Description

The present invention relates to a bathtub cleaning device, and more particularly to a bathtub cleaning device that automatically cleans a bathtub with a detergent.

Conventionally, a bathtub cleaning device that automatically cleans a bathtub by injecting detergent water from a nozzle has been known. For example, in the bathtub cleaning device described in Patent Document 1, a plurality of nozzles are provided on the bottom surface of the bathtub, and at the time of cleaning, detergent water is directed from the nozzles toward the inner wall surface of the bathtub while rotating these nozzles by protruding from the bottom surface. Is designed to spout. In addition, the nozzle can be stored in the main body of the device when the bathtub is not washed, such as when taking a bath.

Japanese Unexamined Patent Publication No. 5-49589

However, in the bathtub cleaning device of Patent Document 1 described above, since the detergent water adheres to the inner wall surface of the bathtub, the nozzle is configured not only to rotate but also to move in the vertical direction. There is a problem that the structure of the device tends to be complicated. On the other hand, if the nozzle does not move in the vertical direction, the detergent water sprayed from the nozzle interferes with the casing or the like, and it is necessary to solve this problem.

Therefore, the present invention has been made to solve the above-mentioned problems of the prior art, and is a bathtub cleaning device capable of adhering detergent water to the inner wall surface of the bathtub without moving the nozzle body in the vertical direction. The purpose is to provide.

In order to achieve the above object, the present invention is a bathtub cleaning device that automatically cleans a bathtub with a detergent, and a casing provided on the bottom surface of the bathtub and a bathtub provided inside the casing and using detergent water. It has a nozzle body provided with an injection port for injecting detergent water toward the inner wall surface of the bathtub, and a rotation drive unit for rotating the nozzle body. And is provided so as to be at the same position as the upper surface of the casing or at a position lower than the upper surface of the casing when the detergent water is sprayed, so that the casing and the nozzle body do not interfere with the detergent water sprayed from the injection port. It is characterized by being formed.
In the present invention configured in this way, since the casing and the nozzle body are formed so as not to interfere with the detergent water jetted from the injection port, the injection port of the nozzle body is at the same position as the upper surface of the casing or in the casing. Even if it is provided so as to be lower than the upper surface, it is possible to prevent the detergent water sprayed from the injection port of the nozzle body from hitting the casing or the nozzle. Therefore, according to the present invention, even if the nozzle body is not movable in the vertical direction and the injection port is provided at the same position as the upper surface of the casing or at a position lower than the upper surface of the casing, the bathtub is provided. Detergent water can be attached to the inner wall surface.

Further, the present invention is a bath cleaning device that automatically cleans a bathtub with detergent water, and has a casing provided on the bottom surface of the bathtub and detergent water provided inside the casing and directed toward the inner wall surface of the bathtub. It has a nozzle body provided with an injection port for injecting, and a rotation drive unit for rotating the nozzle body, and the injection port of the nozzle body is formed so as to inject detergent water diagonally upward and detergent water. Is provided so as to be at the same position as the upper surface of the nozzle body extending so as to be flush with the upper surface of the casing or at a position lower than the upper surface of the nozzle body at the time of injection, and the casing and the nozzle body are injected from the injection port. It is characterized in that it is formed so as not to interfere with the detergent water.
In the present invention configured as described above, since the casing and the nozzle body are formed so as not to interfere with the detergent water injected from the injection port, the detergent water injected from the injection port of the nozzle body is formed in the casing and the nozzle. It is possible to prevent it from hitting the main body. Therefore, according to the present invention, the detergent water can be adhered to the inner wall surface of the bathtub without making the nozzle body movable in the vertical direction.

In the present invention, preferably, at least one of the nozzle body and the casing is formed so that at least a part of the upper surface of the portion located in front of the injection port in the injection direction is lower than the injection port.
In the present invention configured as described above, at least one of the nozzle body and the casing is formed so that at least a part of the upper surface of the portion located in front of the injection port in the injection direction is lower than the injection port. Therefore, even if the injection port of the nozzle body is provided so as to be lower than the upper surface of the casing, it is possible to prevent the detergent water sprayed from the injection port of the nozzle body from hitting the casing or the nozzle body. ..

In the present invention, preferably, at least one of the nozzle body and the casing is recessed downward in a part of the upper surface of the nozzle body and the casing so that the upper surface of the portion located in front of the injection port is lower than the injection port. It has a recess.
In the present invention configured as described above, at least one of the nozzle body and the casing has a part of the upper surface thereof so that the upper surface of the portion located in front of the injection port in the injection direction is lower than the injection port. Since the recessed portion is provided downward, the recessed portion can be made smaller as compared with the case where the entire upper surface of at least one of the nozzle body and the casing is recessed downward. Therefore, according to the present invention, dirt on the recesses can be suppressed.

In the present invention, preferably, the casing is provided with a groove portion connecting the upper surface at a position lower than the injection port of the nozzle body or the upper surface at a position lower than the injection port of the casing and the bottom surface of the bathtub.
In the present invention configured as described above, even if the detergent water invades the upper surface at a position lower than the injection port of the nozzle body or the upper surface at a position lower than the injection port of the casing, the detergent water is bathed by the groove portion of the casing. Can be guided to the bottom of the. Therefore, according to the present invention, it is possible to prevent the detergent water from staying on the upper surface at a position lower than the injection port of the nozzle body or the upper surface at a position lower than the injection port of the casing.

In the present invention, preferably, the upper surface at a position lower than the injection port of the nozzle body is inclined downward toward the groove portion and the bottom surface of the bathtub when at least a part of the bottom surface thereof rotates and communicates with the groove portion. It is formed like this.
In the present invention configured in this way, the detergent water that has entered the upper surface at a position lower than the injection port of the nozzle body has a groove portion when at least a part of the bottom surface of the upper surface rotates and communicates with the groove portion. And because it is formed so as to incline downward toward the bottom surface of the bathtub, it is easy to be guided to the bottom surface of the bathtub. Therefore, according to the present invention, it is possible to further prevent the detergent water from staying on the upper surface at a position lower than the injection port of the nozzle body.

In the present invention, preferably, the upper surface at a position lower than the injection port of the nozzle body is inclined downward toward the groove and the bottom surface of the bathtub when at least a part of the upper surface rotates and communicates with the groove. It is formed like this.
In the present invention configured as described above, in the detergent water that has entered the upper surface at a position lower than the injection port of the nozzle body, at least a part of the upper surface at a position lower than the injection port of the nozzle body is rotated by the nozzle body to form a groove. Since it is formed so as to incline downward toward the groove portion and the bottom surface of the bathtub when communicating with the groove portion, it is easy to be guided from the groove portion to the bottom surface of the bathtub. Therefore, it is possible to prevent the detergent water from staying on the upper surface at a position lower than the injection port of the nozzle body.

In the present invention, preferably, the injection port of the nozzle body is provided at a position deviated from the rotation center of the nozzle body.
In the present invention configured as described above, since the injection port of the nozzle body is provided at a position deviated from the rotation center of the nozzle body, the size of the nozzle body can be made compact.

In the present invention, the upper surface of the nozzle body is preferably provided at the same position as the upper surface of the casing or at a position lower than the upper surface of the casing.
In the present invention configured as described above, since the upper surface of the nozzle body is provided at the same position as the upper surface of the casing or at a position lower than the upper surface of the casing, the nozzle body does not interfere with the user when bathing.

In the present invention, preferably, the injection port of the nozzle body is formed so that the detergent water sprayed from the injection port spreads in the vertical direction rather than the horizontal direction.
In the present invention configured as described above, since the nozzle body sprays the detergent water from the injection port so as to spread in the vertical direction rather than the horizontal direction, the detergent water can be sprayed over a wide range of the inner wall surface of the bathtub. , Detergent water can be reliably adhered to a wide range of the inner wall surface.

The present invention is preferably further positioned in front of the injection port formed on at least one of the nozzle body and the casing by injecting a liquid (detergent water, hot water, water) from the injection port of the nozzle body. It has a control unit that executes a first cleaning mode for cleaning the upper surface of the portion.
In the present invention configured as described above, the first cleaning mode executed by the control unit suppresses dirt on the upper surface of the portion located in front of the injection port of the injection port formed on at least one of the nozzle body and the casing. can do.

The present invention preferably further executes a first cleaning mode in which a liquid (detergent water, hot water, water) is injected from the injection port of the nozzle body to clean the recess formed in at least one of the nozzle body and the casing. It has a control unit to be used.
In the present invention configured as described above, the first cleaning mode executed by the control unit can suppress the contamination of the recesses formed in at least one of the nozzle body and the casing.

In the present invention, preferably, the control unit executes the first washing mode after draining the water in the bathtub and before the water is stored in the upper bathtub.
In the present invention configured as described above, the upper surface or the concave portion formed on at least one of the nozzle body and the casing is cleaned by the control unit after draining the bath water which is most likely to be contaminated. Since one cleaning mode is executed, dirt on the upper surface or the concave portion can be further suppressed.

In the present invention, preferably, the control unit executes a second cleaning mode for cleaning the inner wall surface of the bathtub, and executes the first cleaning mode before executing the second cleaning mode.
In the present invention configured as described above, since the control unit executes the first cleaning mode for cleaning the upper surface or the concave portion before executing the second cleaning mode for cleaning the inner wall surface of the bathtub, the first cleaning mode The dirt removed in step 2 can be washed away in the second washing mode. Therefore, according to the present invention, the cleaning performance of the entire bathtub can be improved as compared with the case where the first cleaning mode is performed after the second cleaning mode.

According to the bathtub cleaning device of the present invention, the detergent water can be adhered to the inner wall surface of the bathtub without moving the nozzle body in the vertical direction.

It is an overall block diagram which shows the bathtub cleaning apparatus by embodiment of this invention, and the bathtub to which this bathtub cleaning apparatus is applied. It is a top view which shows the state which the nozzle unit of the bathtub cleaning apparatus by this Embodiment is attached to the bottom surface of a bathtub. It is sectional drawing of the nozzle unit of the bathtub washing apparatus seen along the line III-III of FIG. It is a perspective view of FIG. It is a perspective view which shows transparently showing the cover of the nozzle unit of the bathtub washing apparatus of this embodiment. It is a perspective view which shows the state which the detergent water is ejected from the injection port of a nozzle body. FIG. 5 is a cross-sectional view taken along the line VII-VII of FIG. It is a perspective view which shows the structure in the vicinity of the injection port of a nozzle body by the modification of this embodiment. FIG. 9 is a cross-sectional view showing a structure near the upper surface of the nozzle body according to the modified example shown in FIG. It is an enlarged cross-sectional view which shows a part of the upper part of the nozzle body of the bathtub cleaning apparatus by this embodiment. It is the schematic plan view which looked at the nozzle unit by another embodiment of this invention from above. FIG. 11 is a partial cross-sectional view of FIG. It is the schematic plan view which looked at the nozzle unit by the modification of another Embodiment of this invention from above. It is a partial cross-sectional view of FIG. It is a flowchart which shows the cleaning mode 1 and 2 executed by the bathtub cleaning apparatus by embodiment of this invention. It is sectional drawing which shows the upper part of the nozzle body which executed the cleaning mode 1 shown in FIG. It is sectional drawing which shows the upper part of the nozzle body of the bathtub washing apparatus according to 2nd Embodiment of this invention.

The bathtub cleaning device according to the embodiment of the present invention will be described with reference to the drawings. First, the bathtub cleaning device according to the embodiment of the present invention and the bathtub to which the bathtub cleaning device is applied will be described with reference to FIG. FIG. 1 is an overall configuration diagram showing a bathtub cleaning device according to an embodiment of the present invention and a bathtub to which the bathtub cleaning device is applied.

As shown in FIG. 1, reference numeral 1 indicates a bathtub, which comprises a bottom surface 2 and an inner wall surface 4, and these bottom surface 2 and the inner wall surface 4 are washed with detergent water as described later, and further. , It is designed to be rinsed with water. Further, a water supply port 6 is provided on the inner wall surface 4 of the bathtub 1, so that hot water is supplied into the bathtub 1. A drainage port 8 is provided on the bottom surface 2 of the bathtub 1 so that hot water can be drained to the outside.

Next, a bathtub cleaning device 10 for automatically cleaning the bathtub 1 by supplying detergent water described later to the bathtub 1 will be described. The bathtub cleaning device 10 includes a nozzle unit 12 for injecting detergent water, and the nozzle unit 12 is attached to the bottom surface 2 of the bathtub 1. Although the details will be described later, the nozzle unit 12 includes a nozzle body 14, a casing 16 for supporting the nozzle body 14, and an electric motor (stepping motor or the like) 18 for rotating the nozzle body 14. .. The nozzle body 14 may be rotated by hydraulic power. Here, the nozzle body 14 rotates about a rotation axis extending in the direction perpendicular to the bottom surface 2 of the bathtub 1. Further, as shown in FIG. 1, the rotation direction of the nozzle body 14 is clockwise.

The bathtub cleaning device 10 includes three flow paths for supplying detergent water to the nozzle unit 12. First, the first flow path 20 is a flow path for supplying hot water from a water heater (not shown), and the first flow path 20 has a water stop valve 22 with a filter from the upstream. A flow valve 24, a water supply solenoid valve 26 that controls the amount of water supplied by opening and closing operations, a temperature sensor 28, and a cis-turn 30 that is an edge cutting tank for mixing detergent and hot water to generate and store detergent water are provided. There is. A float switch 31 is provided in the systurn 30, and the float switch 31 can measure the water level of the detergent water.

The second flow path 32 is a flow path for supplying liquid detergent, and the second flow path 32 includes a detergent tank 34, a detergent electromagnetic valve 36 for controlling the supply of detergent, and an orifice 38 from the upstream. And, a detergent pump 40 for controlling the supply amount of the detergent is provided, and the detergent is supplied to the above-mentioned cistern 30.

Here, the systurn 30 is provided with a float switch 31 as described above, and the water supply solenoid valve 26, the detergent solenoid valve 36, the detergent pump 40, and the like are controlled by the signal from the float switch 31, and a desired supply is performed. A large amount of detergent water is being produced. Further, by controlling the rotation speed and driving time of the cleaning pump 40, the valve opening time of the water supply solenoid valve 26, etc., the concentration of the detergent water can be changed so that the detergent water having a desired concentration can be obtained. It has become.

The third flow path 42 is a flow path for supplying (supplying) the detergent water stored in the systurn 30 to the nozzle unit 12 described above. A cleaning pump 44 and a check valve 46 are provided in the third flow path 42 from the upstream. The cleaning pump 44 can control (adjust) the flow rate of the detergent water supplied to the nozzle unit 12, that is, the flow rate of the detergent water injected from the nozzle body 14 described later.

Further, the bathtub cleaning device 10 includes a control unit 48, and the above-mentioned electric motor 18, detergent pump 40, cleaning pump 44, and the like are controlled by the control unit 48.
In the above-mentioned example, hot water is supplied to the first flow path 20 from the water heater, but water (cold water) may be supplied without using the water heater.
Alternatively, instead of using the systurn 30, a Venturi tube may be used. When a Venturi tube is used, it produces detergent water but does not store it.
When the systurn 30 is not used, the flow rate of the detergent water may be controlled by an electromagnetic valve or a "combination of a pump and an electromagnetic valve" instead of the cleaning pump 44.

Next, the structure of the nozzle unit 12 of the bathtub cleaning device 10 of the present embodiment will be described with reference to FIGS. 2 to 4. FIG. 2 is a plan view seen from above showing a state in which the nozzle unit of the bathtub cleaning device according to the present embodiment is attached to the bottom surface of the bathtub, and FIG. 3 is a bathtub cleaning viewed along lines III-III of FIG. It is sectional drawing of the nozzle unit of an apparatus, and FIG. 4 is a perspective view of FIG.

As shown in FIGS. 2 to 4, the nozzle unit 12 includes a nozzle body 14, a casing 16 that rotatably houses the nozzle body 14, and an electric motor 18 for rotating the nozzle body 14. The casing 16 includes an outer cylinder 50, an intermediate cylinder 52 attached to the inside of the outer cylinder 50, and an inner cylinder 54 attached to the inside of the intermediate cylinder 52. Further, a flange 50a is provided on the upper portion of the outer cylinder 50. The outer cylinder 50 is attached to the bottom surface 2 of the bathtub 1 via packing 56 and is fixed to the bottom surface 2 by a fixing nut 58.

The electric motor 18 is attached to the lower portion of the intermediate cylinder 52. An output shaft 18a is attached to the electric motor 18, and a nozzle body 14 is attached to the tip (upper end) of the output shaft 18a. Further, a tubular support member 60 for supporting the nozzle body 14 is attached to the lower portion of the inner cylinder 54.

Further, a flow path member 61 having an L-shaped cross section is attached to the lower portion of the intermediate cylinder 52 along the lower side and the side of the electric motor 18, and a liquid (detergent water, hot water, water) flows. The flow path 61a is formed. Further, a flow path 60a is formed between the support member 60 and the intermediate cylinder 52, and a flow path 15 is also formed inside the nozzle body 14. The liquid (detergent water, hot water, water) supplied to the nozzle unit 12 from the third flow path 42 described above is the flow path 61a of the flow path member 61, and the flow path 60a between the support member 60 and the intermediate cylinder 52. The nozzle body 14 reaches the injection port 62 formed on the upper portion of the nozzle body 14 through the flow path 15 inside the nozzle body 14.

The casing 16 further includes a cover 64 that covers the upper surface of the flange 50a of the outer cylinder 50, the upper surface of the flange 50a of the outer cylinder 50, the upper surface of the intermediate cylinder 52, and the upper surface of the inner cylinder 54. As described above, the casing 16 includes the outer cylinder 50, the intermediate cylinder 52, the inner cylinder 54, and the cover 64. The casing 16 preferably includes a cover 64, but the casing may not be provided.

Next, a method of attaching the nozzle unit 12 to the bottom surface 2 of the bathtub 1 will be described. First, the outer cylinder 50 is inserted into the mounting opening 68 formed in the bottom surface 2 of the bathtub 1 from above the bathtub 1, and then fixed to the bottom surface 2 of the bathtub 1 by a fixing nut 58 from below the bathtub 1. To do. Next, outside the bathtub 1, the output shaft 18a is inserted into the intermediate cylinder 52 from above, the electric motor 18 and the flow path member 61 are inserted from below, and the intermediate cylinder 52, the output shaft 81a, and the electric motor 18 are inserted. Assemble the flow path member 61 so as to be integrated. Next, outside the bathtub 1, the inner cylinder 54, the nozzle body 14, and the support member 60 are assembled, and the inner cylinder 54, the nozzle body 14, and the support member 60 that are assembled and integrated are assembled from above with the intermediate cylinder described above. Insert inside 52. Next, the intermediate cylinder 52, the output shaft 81a, the electric motor 18, the flow path member 61, the inner cylinder 54, the nozzle body 14, and the support member 60, which are integrated with each other, are placed inside the outer cylinder 50 from above on the bottom surface 2. Insert from above. After that, the cover 64 is attached to the upper surfaces of the outer cylinder 50, the intermediate cylinder 52, and the inner cylinder 54 so as to cover them from above.

Here, for maintenance and the like, each member (intermediate cylinder 52, output shaft 18a, electric motor 18, flow path member 61, inner cylinder 54, nozzle body 14, support) inserted inside the cover 64 and the outer cylinder 50. The member 60) can be taken out.

Here, as shown in FIG. 3, a gap (sliding space) G is formed between the nozzle body 14 and the inner cylinder 54 so that the nozzle body 14 can rotate. An annular packing 78 covering the gap G is attached to the outer periphery of the nozzle body 14 as a dust intrusion prevention member for preventing dust from entering through the gap G. One end of the annular packing 78 is held by the nozzle body 14 as a holding end, and the other end is in contact with the upper surface of the inner cylinder 54 as a free end.

Next, the structure around the injection port of the nozzle body will be described with reference to FIGS. 5 to 7. FIG. 5 is a perspective view showing the cover of the nozzle unit of the bathtub cleaning device of the present embodiment in a transparent manner, and FIG. 6 is a perspective view showing a state in which detergent water is sprayed from the injection port of the nozzle body, and FIG. Is a cross-sectional view taken along the line VII-VII of FIG.

As shown in FIG. 5, a recess 70 extending in the longitudinal direction from a position deviated from the rotation center of the injection port 62 through the center to the outer peripheral edge is formed on the upper surface of the nozzle body 14. An injection port 62 for injecting detergent water or water is formed at a position deviated from the rotation center of the recess 70.

Further, a donut-shaped notch space 74 is formed in the inner peripheral edge portion above the inner cylinder 54 so that a space exists between the inner peripheral edge side and the outer peripheral side of the nozzle body 14. Further, four groove portions 76 extending in the radial direction are formed on the upper surface side of the inner cylinder 54, the intermediate cylinder 52, and the flange 50a of the outer cylinder, and these groove portions 76 and the above-mentioned notch space 74 communicate with each other. There is. Further, the recess 70 of the nozzle body 14 also communicates with the four groove portions 76 via the notch space 74.

As shown in FIG. 6, the injection port 62 of the nozzle body 14 has an elongated arc shape, and is formed so as to extend in the vertical direction from the lower side to the upper side. The detergent water sprayed from the injection port 62 spreads in the vertical direction rather than the horizontal direction, and has a substantially fan shape. Further, on the upper surface 17 of the portion of the nozzle body 14 located in front of the injection port 62 in the injection direction, the recess 70 extending in the longitudinal direction described above is formed so as to be lower than the position of the injection port 62.

As shown in FIG. 7, the injection port 62 of the nozzle body 14 is located below the cover 64 of the casing 16. Further, the recess 70 described above is formed in front of the injection port 62 of the nozzle body 14 in the injection direction, and the bottom surface 70a of the recess 70 is inclined downward toward the bottom surface 2 of the bathtub 1. Similarly, the bottom surface 76a of the four groove portions 76 extending in the radial direction formed on the upper surface side of the flange 50a of the inner cylinder 54, the intermediate cylinder 52, and the outer cylinder 50 described above are also directed toward the bottom surface 2 of the bathtub 1. It is tilted downward.

As shown in FIGS. 5 to 7, in the bathtub cleaning device 10 according to the present embodiment, the detergent water is ejected obliquely upward from the injection port 62, and the injection port 62 of the nozzle body 14 is the casing 16. Since the recess 70 is formed in the portion located below the cover 64 and further in front of the injection port 62 in the injection direction, the nozzle body 14 and the casing 16 are the detergents ejected from the injection port 62. It is designed so that it does not interfere with water. As a result, in the present embodiment, since the recess 70 is formed in the portion of the injection port 62 located in front of the injection direction, the recess 70 is formed as compared with the case where the entire upper surface of the nozzle body 14 is recessed downward. The part can be made smaller.

Further, as shown in FIG. 7, the injection port 62 of the nozzle body 14 is provided at a position deviated from the rotation center, which is the position of the rotation axis X of the nozzle body 14. Therefore, according to the present embodiment, the size of the nozzle body 14 in a plan view can be made compact.

Next, a modified example of the upper surface shape of the nozzle body 14 will be described with reference to FIGS. 8 and 9. FIG. 8 is a perspective view showing a structure near the injection port of the nozzle body according to the modified example of the present embodiment, and FIG. 9 is a cross-sectional view showing a structure near the upper surface of the nozzle body according to the modified example shown in FIG. ..

As shown in FIG. 8, the injection port 62 of the nozzle body 14 is the same as the injection port 62 shown in FIG. 6 described above. On the upper surface of the portion of the nozzle body 14 located in front of the injection port 62 in the injection direction, a recess 80 is formed in which a part of the upper surface is recessed in a bowl shape so as to be lower than the position of the injection port 62. ..

As shown in FIG. 9, the injection port 62 of the nozzle body 14 is located below the cover 64 of the casing 16. Further, the recess 80 described above is formed in front of the injection port 62 of the nozzle body 14 in the injection direction, and the bottom surface 80a of the recess 80 is inclined downward toward the bottom surface 2 of the bathtub 1. Similarly, the bottom surface 76a of the four groove portions 76 extending in the radial direction formed on the upper surface side of the flange 50a of the inner cylinder 54, the intermediate cylinder 52, and the outer cylinder 50 described above are also directed toward the bottom surface 2 of the bathtub 1. It is tilted downward.

As shown in FIGS. 8 and 9, in the bathtub cleaning device 10 according to the modified example of the present embodiment, the detergent water is similarly ejected from the injection port 62 diagonally upward, and the nozzle body 14 is ejected. Since the mouth 62 is located below the cover 64 of the casing 16, and further, a recess 80 having a portion of the upper surface recessed in a bowl shape is formed in a portion of the injection port 62 located in front of the injection direction. The nozzle body 14 and the casing 16 are designed so as not to interfere with the detergent water injected from the injection port 62. Similarly, in this modification as well, since the recess 80 is formed in a part of the portion of the injection port 62 located in front of the injection direction, the entire upper surface of the nozzle body 14 is recessed downward as compared with the case where the entire upper surface is recessed downward. Therefore, the recessed portion can be made smaller.

FIG. 10 is an enlarged cross-sectional view showing a part of the upper part of the nozzle body of the bathtub cleaning device according to the present embodiment. As shown in FIG. 10, the upper surface 14a of the nozzle body 14 is provided at a position lower than the upper surface 64a of the cover 64 of the casing 16 by a height H. Therefore, according to the present embodiment, the upper surface 14a of the nozzle body 14 is provided at a position lower than the upper surface 64a of the cover 64 of the casing 16 by a height H, so that the nozzle body 14 interferes with the user when taking a bath. do not become. The upper surface 14a of the nozzle body 14 may be at the same height as the upper surface 64a of the cover 64 of the casing 16.

Next, with reference to FIGS. 11 to 14, the top surface shapes of the nozzle body and the casing of the nozzle unit of the bathtub cleaning device according to another embodiment of the present invention will be described. FIG. 11 is a schematic plan view of the nozzle unit according to another embodiment as viewed from above, and FIG. 12 is a partial cross-sectional view of FIG.

As shown in FIGS. 11 and 12, the ejection port 84 of the nozzle body 82 is provided in the end region of the nozzle body 82, and the detergent water is ejected from the injection port 84 toward the outside and upward. .. Here, the upper surface 82a of the nozzle body 82 is provided at a position lower than the upper surface 86a of the casing 86 (the inner cylinder, the intermediate cylinder, and the inner cylinder are shown integrally). The upper surface 82a of the nozzle body 82 may be at the same height as the upper surface 86a of the casing 86. Further, the nozzle body 82 is not provided with the recesses 70 and 80 of FIGS. 6 and 8 described above, and a ring-shaped recess 88 is formed on the upper surface of the casing 86 on the inner peripheral side. As a result, the recess 88 formed on the upper surface of the portion of the casing 86 located in front of the injection port 84 in the injection direction is located below the injection port 84. Further, the casing 86 is formed with a groove 90 extending in the radial direction communicating with the recess 88. As a result, according to the other embodiment, even if the detergent water enters the recess 88, the detergent water can be guided to the bottom surface 4 of the bathtub 1 by the groove 90.

In another embodiment, since the recess 88 at a position lower than the injection port 84 is formed on the inner peripheral side of the casing 86, the recessed portion is formed as compared with the case where the entire upper surface of the casing is recessed downward. It can be made smaller.

Next, as shown in FIGS. 13 and 14, in the modified example of the other embodiment, the ejection port 94 of the nozzle body 92 is provided in a region closer to the end than the center of the nozzle body 92, and the injection port 94 is provided. Detergent water is sprayed upward from the outside. Here, the upper surface 92a of the nozzle body 92 is provided at a position lower than the upper surface 96a of the casing 96 (the inner cylinder, the intermediate cylinder, and the inner cylinder are shown integrally). The upper surface 92a of the nozzle body 92 may be at the same height as the upper surface 96a of the casing 96. Further, a recess 98 extending in the longitudinal direction is provided in front of the nozzle body 92 in the injection direction, and a ring-shaped recess 100 is formed on the upper surface of the casing 96 on the inner peripheral side. As a result, the recesses 98 and 100 formed on the upper surface of the portion of the injection port 94 located in front of the injection direction are located below the injection port 94. Further, the casing 96 is formed with a groove 102 extending in the radial direction communicating with the recesses 98 and 100. As a result, according to the other embodiment, even if the detergent water enters the recesses 98 and 100, the detergent water can be guided to the bottom surface 4 of the bathtub 1 by the groove 102.

In the modification of the other embodiment, since the recesses 98 and 100 which are lower than the injection port 94 are formed in both the nozzle body 92 and the casen 96, the entire upper surface of the casing is recessed downward. In comparison, the recessed portion can be made smaller.

Next, the cleaning mode 1 and the cleaning mode 2 executed by the bathtub cleaning device according to the embodiment of the present invention will be described with reference to FIGS. 15 and 16. FIG. 15 is a flowchart showing cleaning modes 1 and 2 executed by the bathtub cleaning apparatus according to the embodiment of the present invention, and FIG. 16 is a cross-sectional view showing the upper part of the nozzle body in which cleaning mode 1 is executed. Here, S shown in FIG. 15 indicates each step.

As shown in FIG. 15, first, in S1, hot water is supplied to the hot water tank (filling with hot water). Next, in S2, bathing is performed, and then in S3, hot water is discharged from the bathtub (drainage). Next, the process proceeds to S4, and a first cleaning mode is executed in which detergent water is sprayed from the injection port of the nozzle body into the recess formed on the upper surface of the nozzle body or at least one of the nozzle body or the casing to clean the recess. .. Next, the process proceeds to S5, and the second cleaning mode for cleaning the inner wall surface of the bathtub described above is executed. Here, in the first cleaning mode for cleaning the concave portion, hot water or water may be sprayed instead of the detergent water.

As shown in FIG. 16, when the flow rate of the detergent water jetted from the injection port 62 is extremely reduced in the first cleaning mode, the detergent water falls from diagonally above to below, and the upper surface provided on the nozzle body 14 and the like. The recess 70 and the recess provided in the casing can be cleaned. By executing this first cleaning mode, dirt on the upper surface and the concave portion can be suppressed.

Since the first cleaning mode is executed after the drainage from the bathtub, which is most likely to contaminate the upper surface and the concave portion, the contamination of the upper surface and the concave portion can be further suppressed.
Further, since the first cleaning mode for cleaning the upper surface or the concave portion is executed before the second cleaning mode for cleaning the inner wall surface of the bathtub is executed, the dirt removed in the first cleaning mode can be washed away in the second cleaning mode. it can. Therefore, according to the present embodiment, the cleaning performance of the entire bathtub can be improved as compared with the case where the first cleaning mode is performed after the second cleaning mode.

Next, the operation and effect of the bathtub cleaning device according to the above-described embodiment of the present invention will be described.
First, in the bathtub cleaning device according to the present embodiment, the casing 16 and the nozzle body 14 are formed so as not to interfere with the detergent water injected from the injection port 62 (see FIGS. 5 to 7 and the like), so that the nozzle body is formed. Even if the injection port 62 of the 14 is provided so as to be at the same position as the upper surface of the casing 16 (upper surface 64a of the cover 64) or at a position lower than the upper surface 64a of the casing 16, the injection port 62 is injected from the injection port 62 of the nozzle body 14. It is possible to prevent the detergent water from hitting the casing 16 and the nozzle body 14. Therefore, according to the present embodiment, even if the nozzle body 14 is not movable in the vertical direction and the injection port 62 is provided so as to be lower than the upper surface of the casing 16, the inner wall surface of the bathtub 1 is provided. Detergent water can be attached to 4.

In the bathtub cleaning device according to the present embodiment, at least one of the nozzle body 14 and the casing 16 is formed so that at least a part of the upper surface of the portion located in front of the injection port 62 in the injection direction is lower than the injection port. (See FIGS. 5 to 7, 11 to 14 and the like), so that even if the injection port 62 of the nozzle body 14 is provided so as to be lower than the upper surface of the casing 16, the nozzle body 14 can be used. It is possible to prevent the detergent water sprayed from the injection port 62 from hitting the casing 16 and the nozzle body 14.

In the bathtub cleaning device according to the present embodiment, at least one of the nozzle body 14 and the casing 16 is one of the upper surfaces of the nozzle body 14 and the casing 16 so that the upper surface of the portion located in front of the injection port 62 in the injection direction is lower than the injection port. Since it is provided with a recess in which the portion is recessed downward (see FIGS. 7 and 8, FIGS. 11 to 14 and the like), it is compared with the case where the entire upper surface of at least one of the nozzle body 14 and the casing 16 is recessed downward. Therefore, the recessed portion can be made smaller. Therefore, according to the present embodiment, it is possible to suppress the contamination of the concave portion.

In the bathtub cleaning device according to the present embodiment, even if the detergent water invades the upper surface of the nozzle body 14 lower than the injection port 62 or the upper surface of the casing 16 lower than the injection port 62, the groove 76 of the casing 16 allows the detergent water to enter. The detergent water can be guided to the bottom of the bathtub. Therefore, according to the present embodiment, it is possible to prevent the detergent water from staying on the upper surface of the nozzle body 14 at a position lower than the injection port 62 or on the upper surface of the casing 16 at a position lower than the injection port 62.

In the bathtub cleaning device according to the present embodiment, the detergent water that has entered the upper surface 17 at a position lower than the injection port 62 of the nozzle body 14 is such that at least a part of the upper surface 17 at a position lower than the injection port 62 of the nozzle body 14 is a nozzle. When the main body 14 rotates and communicates with the groove portion 76, it is formed so as to incline downward toward the groove portion and the bottom surface of the bathtub, so that the groove portion is likely to be guided to the bottom surface of the bathtub. Therefore, it is possible to prevent the detergent water from staying on the upper surface 17 at a position lower than the injection port 62 of the nozzle body 14.

In the bathtub cleaning device according to the present embodiment, since the nozzle body 14 is provided at a position deviated from the rotation center (see FIG. 7), the size of the nozzle body 14 can be made compact.

In the bathtub cleaning device according to the present embodiment, the upper surface 14a of the nozzle body 14 is provided at the same position as the upper surface 64a of the cover 64 of the casing 16 or at a position lower than the upper surface 64a of the cover 64 of the casing 16 (see FIG. 10 and the like). ) Therefore, the nozzle body 14 does not interfere with the user when taking a bath.

In the bathtub cleaning device according to the present embodiment, since the nozzle body 14 injects the detergent water from the injection port 62 so as to spread in the vertical direction rather than the horizontal direction (see FIG. 6), the detergent water is sprayed over a wide range of the inner wall surface of the bathtub. Can be sprayed, and the detergent water can be reliably adhered to a wide range of the inner wall surface.

In the bathtub cleaning device according to the present embodiment, the first cleaning mode executed by the control unit 48 can suppress the contamination of the recesses formed in at least one of the nozzle body 14 and the casing 16.

In the bathtub cleaning device according to the present embodiment, the upper surface or the concave portion formed on at least one of the nozzle body 14 and the casing 16 is cleaned by the control unit 48 after draining the bathtub water which is most likely to be contaminated. Since the first cleaning mode to be performed is executed, it is possible to further suppress the contamination of the upper surface or the concave portion.

In the bathtub cleaning device according to the present embodiment, the control unit 48 executes the first cleaning mode for cleaning the upper surface or the concave portion before executing the second cleaning mode for cleaning the inner wall surface of the bathtub. The dirt removed in step 2 can be washed away in the second washing mode. Therefore, according to the present embodiment, the cleaning performance of the entire bathtub can be improved as compared with the case where the first cleaning mode is performed after the second cleaning mode.

Next, the bathtub cleaning device according to the second embodiment of the present invention will be described with reference to FIG. FIG. 17 is a cross-sectional view showing the upper part of the nozzle body of the bathtub cleaning device according to the second embodiment of the present invention. Since the bathtub cleaning device according to the second embodiment has the same basic structure as the bathtub cleaning device according to the above-described embodiment, only this different part will be described below.

As shown in FIG. 17, the cover 112 of the casing 110 extends upward substantially linearly from the outer peripheral end to the inner peripheral end. The upper surface 114a of the nozzle body 114 has an arc shape that is convex upward, and further has a shape that is continuous with the cover 112 so as to be flush with the cover 112 of the casing 110.

Further, the nozzle body 114 has an injection port 116 for injecting detergent water diagonally upward, so that the injection port 116 is at the same height as the upper surface 114a of the nozzle body 114 or at a position lower than the upper surface 114a. It is provided in. Therefore, the injection port 116 of the nozzle body 114 is provided at a position lower than the virtual line V extending inward of the cover 112 of the casing 110. Also in this embodiment, at least one of the nozzle body 114 and the casing 110 is formed so that at least a part of the upper surface 114a of the portion located in front of the injection port 116 in the injection direction is lower than the injection port. Therefore, the casing 110 and the nozzle body 114 do not interfere with the detergent water injected from the injection port 116.

In the bathtub cleaning device according to the second embodiment, the casing 110 and the nozzle body 114 are formed so as not to interfere with the detergent water injected from the injection port 116, so that the casing 110 and the nozzle body 114 are injected from the injection port 116 of the nozzle body 114. It is possible to prevent the detergent water from hitting the casing 110 and the nozzle body 114. Therefore, according to the present embodiment, the detergent water can be adhered to the inner wall surface 4 of the bathtub 1 without making the nozzle body 114 movable in the vertical direction.

1 Bathtub 2 Bottom surface 4 Inner wall surface 10 Bathtub cleaning device 12 Nozzle unit 14, 82, 92, 114 Nozzle body 16, 110 Casing 18 Electric motor 20 First flow path 32 Second flow path 34 Detergent tank 40 Detergent pump 42 No. Flow path 44 Cleaning pump 48 Control unit 50 Outer cylinder 52 Intermediate cylinder 54 Inner cylinder 62, 84, 94, 116 Injection port 64, 112 Cover 70, 80, 88, 98, 100 Recesses 76, 90, 102 Grooves

Claims (13)

A bathtub cleaning device that automatically cleans the bathtub with detergent water.
The casing provided on the bottom of the bathtub and
A nozzle body provided inside the casing and provided with an injection port for injecting detergent water toward the inner wall surface of the bathtub.
It has a rotation drive unit that rotates this nozzle body,
The injection port of the nozzle body is formed so as to inject the detergent water diagonally upward, and is provided so as to be at the same position as the upper surface of the casing or at a position lower than the upper surface of the casing when the detergent water is injected. Be,
The bathtub cleaning device is characterized in that the casing and the nozzle body are formed so as not to interfere with the detergent water jetted from the injection port. A bathtub cleaning device that automatically cleans the bathtub with detergent water.
The casing provided on the bottom of the bathtub and
A nozzle body provided inside the casing and provided with an injection port for injecting detergent water toward the inner wall surface of the bathtub.
It has a rotation drive unit that rotates this nozzle body,
The injection port of the nozzle body is formed so as to inject the detergent water diagonally upward, and extends at the same position as the upper surface of the nozzle body or extends so as to be flush with the upper surface of the casing when the detergent water is injected. It is provided so as to be lower than the upper surface of the nozzle body.
The bathtub cleaning device is characterized in that the casing and the nozzle body are formed so as not to interfere with the detergent water jetted from the injection port. Claim 1 or 2 that at least one of the nozzle body and the casing is formed so that at least a part of the upper surface of a portion located in front of the injection port in the injection direction is lower than the injection port. The bathtub cleaning device described in. At least one of the nozzle body and the casing has a recess in which a part of the upper surface is recessed downward so that the upper surface of the portion located in front of the injection port in the injection direction is lower than the injection port. The bathtub cleaning device according to claim 3. The third or four claim, wherein the casing includes a groove portion connecting an upper surface at a position lower than the injection port of the nozzle body or an upper surface at a position lower than the injection port of the casing and a bottom surface of the bathtub. Bathtub cleaning device. The upper surface at a position lower than the injection port of the nozzle body is tilted downward toward the groove and the bottom surface of the bathtub when at least a part of the upper surface rotates and communicates with the groove. The bathtub cleaning device according to claim 5, which is formed. The bathtub cleaning device according to any one of claims 1 to 6, wherein the injection port of the nozzle body is provided at a position deviated from the rotation center of the nozzle body. The bathtub cleaning device according to any one of claims 1, 3 to 6, wherein the upper surface of the nozzle body is provided at the same position as the upper surface of the casing or at a position lower than the upper surface of the casing. The bathtub cleaning device according to any one of claims 1 to 8, wherein the injection port of the nozzle body is formed so that the detergent water ejected from the injection port spreads in the vertical direction rather than the horizontal direction. Further, a first cleaning mode is executed in which a liquid is injected from the injection port of the nozzle body to clean the upper surface of a portion located in front of the injection port formed on at least one of the nozzle body and the casing. The bathtub cleaning device according to claim 3, further comprising a control unit for the operation. Further, claim 4 or 6, further comprising a control unit that executes a first cleaning mode of injecting a liquid from the injection port of the nozzle body to clean the recess formed in at least one of the nozzle body and the casing. The bathtub cleaning device described in. The bathtub cleaning device according to claim 10 or 11, wherein the control unit executes the first cleaning mode after draining the water in the bathtub and before the water is stored in the upper bathtub. The bathtub cleaning device according to claim 12, wherein the control unit executes a second cleaning mode for cleaning the inner wall surface of the bathtub, and executes the first cleaning mode before executing the second cleaning mode.

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