Bathtub equipment

Abstract

The present invention provides a bathtub device that can prevent water sprayed from the nozzle of the bathtub cleaning device from leaking between the bathtub and the bathtub lid. [Solution] A bathtub cleaning device comprising a bathtub having a bottom, side, and rim, and a spray nozzle, wherein the side has first to fourth side sections, the rim has first to fourth rim sections, and when the points where first to fourth imaginary lines extending from the spray nozzle touch the first to fourth rim sections are the first to fourth contact points, the angles of the first to fourth imaginary lines with respect to the horizontal are the first to fourth angles, and the velocities of the water sprayed from the spray nozzle at the first to fourth contact points are the first to fourth velocities, the first and second angles are greater than the third and fourth angles, respectively, and the third and fourth velocities are slower than the first and second velocities, respectively.

Description

Technical Field

[0001] Aspects of the present invention generally relate to a bathtub apparatus.

Background Art

[0002] There is a bathtub apparatus that includes a bathtub and a bathtub cleaning device provided on a bottom portion of the bathtub. In such a bathtub apparatus, the bathtub is cleaned by spraying water or the like from an ejection port of the bathtub cleaning device toward a side portion, a rim portion or the like of the bathtub in a state where an upper part of the bathtub is covered with a bath lid. However, depending on the shape of the bathtub and the position where the ejection port of the bathtub cleaning device is provided, the ejected water may leak from between the bathtub and the bath lid.

Prior Art Literature

Patent Literature

[0003]

Patent Literature 1

Summary of Invention

Problem to be Solved by the Invention

[0004] Aspects of the present invention have been made based on recognition of such a problem, and an object of the present invention is to provide a bathtub apparatus capable of suppressing leakage of water ejected from an ejection port of a bathtub cleaning device from between the bathtub and a bath lid.

Means for Solving the Problem

[0005] The first invention comprises a bathtub having a bottom surface, a side surface extending upward from the outer peripheral end of the bottom surface, and a rim extending outward from the upper end of the side surface, and a bathtub cleaning device provided on the bottom surface and having a nozzle for spraying water toward the side surface and the rim, wherein the side surface has a first side surface extending in the front-rear direction, a second side surface extending in the front-rear direction and facing the first side surface, a third side surface connecting one end of the first side surface and one end of the second side surface, and the other end of the first side surface and the other end of the second side surface The rim portion has a fourth side portion connecting the first side portion, and the rim portion has a first rim portion extending outwards from the upper end of the first side portion, a second rim portion extending outwards from the upper end of the second side portion, a third rim portion extending outwards from the upper end of the third side portion, and a fourth rim portion extending outwards from the upper end of the fourth side portion, and in a cross section passing through the nozzle along the left-right direction, the point where a first virtual straight line extending from the nozzle touches the first rim portion is defined as the first contact point, and the first virtual The angle of the straight line with respect to the horizontal is defined as the first angle, the velocity of the water ejected from the nozzle at the first contact point is defined as the first velocity, the point where a second virtual straight line extending from the nozzle touches the second rim is defined as the second contact point, the angle of the second virtual straight line with respect to the horizontal is defined as the second angle, the velocity of the water ejected from the nozzle at the second contact point is defined as the second velocity, and in a cross section passing through the nozzle along the front-rear direction, the point where a third virtual straight line extending from the nozzle touches the third rim is defined as the third contact point, and the angle of the third virtual straight line with respect to the horizontal is defined as the third The bathtub device is such that, when the angle is defined as the velocity of the water ejected from the nozzle at the third contact point, the fourth contact point is defined as the point where a fourth virtual line extending from the nozzle touches the fourth rim, the angle of the fourth virtual line with respect to the horizontal is defined as the fourth angle, and the velocity of the water ejected from the nozzle at the fourth contact point is defined as the fourth velocity, the first angle and the second angle are each greater than the third angle and the fourth angle, and the third velocity and the fourth velocity are each slower than the first velocity and the second velocity.

[0006] According to this bathtub device, at the third and fourth contact points, where the angle of the virtual line with respect to the horizontal is small, the water velocity is slower than at the first and second contact points, where the angle of the virtual line with respect to the horizontal is large. This makes it possible to slow down the water velocity at the third and fourth contact points, where water is more likely to leak between the bathtub and the lid, compared to the water velocity at the first and second contact points, where water is less likely to leak between the bathtub and the lid. As a result, leakage of the sprayed water between the bathtub and the lid can be suppressed.

[0007] The second invention is a bathtub device in the first invention, wherein, when the vertical length between the first contact and the nozzle is defined as the first length, the vertical length between the second contact and the nozzle is defined as the second length, the vertical length between the third contact and the nozzle is defined as the third length, and the vertical length between the fourth contact and the nozzle is defined as the fourth length, the first length and the second length are shorter than the third length and the fourth length, respectively.

[0008] This bathtub device allows the vertical distance between the first and second contact points and the spray nozzle to be shorter than the vertical distance between the third and fourth contact points and the spray nozzle. This makes it possible to position the first and second contact points, where the water velocity is faster, lower than the third and fourth contact points, where the water velocity is slower. This further reduces leakage of sprayed water between the bathtub and the bath lid. [Effects of the Invention]

[0009] According to an aspect of the present invention, a bathtub device is provided that can suppress water sprayed from the nozzle of a bathtub cleaning device from leaking between the bathtub and the bathtub lid. [Brief explanation of the drawing]

[0010] [Figure 1] This is a plan view showing a bathtub device according to an embodiment. [Figure 2] This is a cross-sectional view showing a bathtub device according to an embodiment. [Figure 3] This is a cross-sectional view showing a bathtub device according to an embodiment. [Figure 4] This is a plan view showing a bathtub device according to an embodiment. [Modes for carrying out the invention]

[0011] Embodiments of the present invention will be described below with reference to the drawings. In each drawing, similar components are denoted by the same reference numerals, and detailed descriptions are omitted as appropriate.

[0012] Figure 1 is a plan view showing a bathtub device according to an embodiment. As shown in Figure 1, the bathtub device 500 according to this embodiment includes, for example, a bathtub 100 and a bathtub cleaning device 200.

[0013] The bathtub 100 is installed, for example, on the floor of the bathroom. The bathtub 100 is, for example, a roughly rectangular box shape and is open to the top. The bathtub 100 has a horizontally elongated shape with a long side and a short side when viewed from above.

[0014] The bathtub 100 has a bottom portion 10, a side portion 20, and a rim portion 30. The bottom portion 10 is located at the bottom of the bathtub 100 and constitutes the bottom surface of the bathtub 100. The bottom portion 10 is provided with a drain port 11 for draining water accumulated inside the bathtub 100 (i.e., inside the space enclosed by the bottom portion 10, the side portion 20, and the rim portion 30). The side portion 20 extends upward from the outer peripheral edge 10a of the bottom portion 10. The rim portion 30 extends outward from the upper end 20a of the side portion 20.

[0015] The side portion 20 has a first side portion 21, a second side portion 22, a third side portion 23, and a fourth side portion 24. The first side portion 21 and the second side portion 22 extend in the front-rear direction. The second side portion 22 faces the first side portion 21. In the bathtub device 500, in a top view, the second side portion 22 is inclined with respect to the first side portion 21, for example. That is, in the bathtub device 500, in a top view, the second side portion 22 is not parallel to the first side portion 21. In a top view, the second side portion 22 may be parallel to the first side portion 21. The third side portion 23 connects one end 21p (rear end) of the first side portion 21 and one end 22p (rear end) of the second side portion 22. The fourth side portion 24 connects the other end 21q (front end) of the first side portion 21 and the other end 22q (front end) of the second side portion 22. The fourth side portion 24 faces the third side portion 23. The first side portion 21 and the second side portion 22 are side portions that extend in the longitudinal direction. The third side portion 23 and the fourth side portion 24 are side portions that extend in the short direction.

[0016] In this specification, as viewed from the perspective of a bather with their back against the third side portion 23, the top is defined as "top," the bottom as "bottom," the front as "front," the back as "back," the right as "right," and the left as "left."

[0017] The rim portion 30 has a first rim portion 31, a second rim portion 32, a third rim portion 33, and a fourth rim portion 34. The first rim portion 31 extends from the upper end of the first side portion 21 toward the outside (left) of the bathtub 100. The second rim portion 32 extends from the upper end of the second side portion 22 toward the outside (right) of the bathtub 100. The third rim portion 33 extends from the upper end of the third side portion 23 toward the outside (rear) of the bathtub 100. The fourth rim portion 34 extends from the upper end of the fourth side portion 24 toward the outside (front) of the bathtub 100. The first rim portion 31 and the second rim portion 32 are rim portions that extend in the longitudinal direction. The third rim portion 33 and the fourth rim portion 34 are rim portions that extend in the short direction.

[0018] In the bathtub apparatus 500, the first side surface portion 21 and the first rim portion 31 are located on the wall side of the bathroom, and the second side surface portion 22 and the second rim portion 32 are located on the washing floor side of the bathroom. Alternatively, the first side surface portion 21 and the first rim portion 31 may be located on the washing floor side of the bathroom, and the second side surface portion 22 and the second rim portion 32 may be located on the wall side of the bathroom. Furthermore, in the bathtub apparatus 500, the third side surface portion 23 and the third rim portion 33 are located on the back side, and the fourth side surface portion 24 and the fourth rim portion 34 are located on the leg side. Alternatively, the third side surface portion 23 and the third rim portion 33 may be located on the leg side, and the fourth side surface portion 24 and the fourth rim portion 34 may be located on the back side.

[0019] The bathtub cleaning apparatus 200 is provided on the bottom surface portion 10 of the bathtub 100. The bathtub cleaning apparatus 200 has an injection port 210 that injects water. The injection port 210 injects water toward the side surface portion 20 and the rim portion 30 of the bathtub 100. For example, the injection port 210 may inject detergent or the like toward the side surface portion 20 and the rim portion 30 of the bathtub 100. For example, bathtub cleaning can be performed by injecting detergent and water from the injection port 210 in a state where the upper part of the bathtub 100 is covered with a bath lid (not shown). For example, the injection port 210 may inject water or the like toward the side surface portion 20 and the rim portion 30 in all directions at the same time, or may inject water or the like in one direction while rotating clockwise or counterclockwise in a top view to continuously inject water or the like toward the side surface portion 20 and the rim portion 30 in all directions. Furthermore, for example, the injection port 210 may inject water or the like in a linear shape, or may inject water or the like in a fan shape. For example, when an operation input for bathtub cleaning is performed on a remote controller (not shown) provided inside or outside the bathroom, bathtub cleaning is started by the bathtub cleaning apparatus 200.

[0020] Figures 2 and 3 are cross-sectional views showing the bathtub apparatus according to the embodiment. Figure 4 is a plan view showing the bathtub apparatus according to the embodiment. Figure 2 is a cross-sectional view taken along line II-II shown in Figure 1. Figure 3 is a cross-sectional view taken along line III-III shown in Figure 1.

[0021] As shown in FIGS. 2 and 3, the bottom portion 10 includes a linearly extending portion, for example, in a cross-section passing through the jet port 210 along the left-right direction (FIG. 2) and a cross-section passing through the jet port 210 along the front-rear direction (FIG. 3). For example, the bottom portion 10 is inclined toward the drain port 11. The bottom portion 10 may include a curved portion, for example, in the cross-section passing through the jet port 210 along the left-right direction (FIG. 2) and the cross-section passing through the jet port 210 along the front-rear direction (FIG. 3).

[0022] As shown in FIG. 2, the first side surface portion 21 includes a first lower upright surface portion 21a, a first armrest portion 21b, and a first upper upright surface portion 21c. The first lower upright surface portion 21a extends upward from the outer peripheral end 10a of the bottom portion 10, and is connected to the first armrest portion 21b. The first armrest portion 21b extends upward from the upper end of the first lower upright surface portion 21a toward the outside (left side) of the bathtub 100, and is connected to the first upper upright surface portion 21c. The first upper upright surface portion 21c extends upward from the upper end of the first armrest portion 21b, and is connected to the first rim portion 31.

[0023] At the position where the first lower upright surface portion 21a and the first armrest portion 21b are connected, for example, the rate of change of the inclination angle changes. That is, the lower end of the first armrest portion 21b is, for example, a position where the rate of change of the inclination angle changes. Further, at the position where the first armrest portion 21b and the first upper upright surface portion 21c are connected, for example, the rate of change of the inclination angle changes. That is, the upper end of the first armrest portion 21b is, for example, a position where the rate of change of the inclination angle changes.

[0024] Note that the first armrest portion 21b and the first upper upright surface portion 21c are provided as necessary, and may be omitted. When the first armrest portion 21b and the first upper upright surface portion 21c are omitted, the first lower upright surface portion 21a is connected to the first rim portion 31.

[0025] The first lower vertical surface portion 21a has a curved portion 21a1 and an upward-extending portion 21a2. The curved portion 21a1 curves upward from the outer peripheral end 10a of the bottom surface portion 10 and is connected to the upward-extending portion 21a2. The upward-extending portion 21a2 extends upward from the upper end of the curved portion 21a1 and is connected to the first armrest portion 21b. The lower end of the curved portion 21a1 corresponds to the lower end of the first lower vertical surface portion 21a. The lower end of the first lower vertical surface portion 21a corresponds to the lower end of the first side surface portion 21. The upper end of the upward-extending portion 21a2 corresponds to the upper end of the first lower vertical surface portion 21a. In the bathtub device 500, the upward-extending portion 21a2 is inclined outward (to the left) as it extends upward. The upward-extending portion 21a2 does not have to be inclined. The upward extension portion 21a2 includes, for example, a portion that extends linearly in a cross-section (Figure 2) that passes through the injection nozzle 210 along the left-right direction.

[0026] The first armrest portion 21b has an inner curved portion 21b1 and an outer curved portion 21b2. The inner curved portion 21b1 curves outward (to the left) from the upper end of the first lower vertical portion 21a and is connected to the outer curved portion 21b2. The outer curved portion 21b2 curves upward from the upper end of the inner curved portion 21b1 and is connected to the first upper vertical portion 21c. The lower end of the inner curved portion 21b1 corresponds to the lower end of the first armrest portion 21b. The lower end of the first armrest portion 21b corresponds to the upper end of the first lower vertical portion 21a. The upper end of the outer curved portion 21b2 corresponds to the upper end of the first armrest portion 21b. The upper end of the first armrest portion 21b corresponds to the lower end of the first upper vertical portion 21c. Furthermore, the first armrest portion 21b may have an extended portion that extends outward (to the left) between the inner curved portion 21b1 and the outer curved portion 21b2. In this case, the extended portion may include a portion that extends linearly in a cross-section (Figure 2) that passes through the spray nozzle 210 along the left-right direction. Also, as shown in Figure 3, in the bathtub device 500, the first armrest portion 21b is inclined downward as it moves towards the rear. The first armrest portion 21b does not have to be inclined.

[0027] The first upper vertical section 21c extends upward from the upper end of the first armrest section 21b and is connected to the first rim section 31. The upper end of the first upper vertical section 21c corresponds to the upper end of the first side section 21. In the bathtub device 500, the first upper vertical section 21c is inclined outward (to the left) as it extends upward. The first upper vertical section 21c does not have to be inclined. The first upper vertical section 21c includes, for example, a portion that extends linearly in a cross-section (Figure 2) that passes through the spray nozzle 210 along the left-right direction.

[0028] The first rim portion 31 is curved outward (to the left) from the upper end of the first side portion 21. The lower end of the first rim portion 31 corresponds to the upper end of the first side portion 21. The first rim portion 31 may have an extended portion that extends further outward (to the left) from the curved portion. The first rim portion 31 may include a portion that extends in a straight line in a cross-section (Figure 2) that passes through the nozzle 210 along the left-right direction.

[0029] As shown in Figure 2, the second side portion 22 has a second lower vertical portion 22a, a second armrest portion 22b, and a second upper vertical portion 22c. The second lower vertical portion 22a extends upward from the outer peripheral end 10a of the bottom portion 10 and is connected to the second armrest portion 22b. The second armrest portion 22b extends upward from the upper end of the second lower vertical portion 22a and outward (to the right) of the bathtub 100 and is connected to the second upper vertical portion 22c. The second upper vertical portion 22c extends upward from the upper end of the second armrest portion 22b and is connected to the second rim portion 32.

[0030] At the point where the second lower vertical section 22a and the second armrest section 22b are connected, for example, the rate of change in the inclination angle changes. In other words, the lower end of the second armrest section 22b is, for example, a position where the rate of change in the inclination angle changes. Also, at the point where the second armrest section 22b and the second upper vertical section 22c are connected, for example, the rate of change in the inclination angle changes. In other words, the upper end of the second armrest section 22b is, for example, a position where the rate of change in the inclination angle changes.

[0031] The second armrest portion 22b and the second upper vertical portion 22c may be provided as needed or omitted. If the second armrest portion 22b and the second upper vertical portion 22c are omitted, the second lower vertical portion 22a is connected to the second rim portion 32.

[0032] The second lower vertical surface portion 22a has a curved portion 22a1 and an upward-extending portion 22a2. The curved portion 22a1 curves upward from the outer peripheral end 10a of the bottom surface portion 10 and is connected to the upward-extending portion 22a2. The upward-extending portion 22a2 extends upward from the upper end of the curved portion 22a1 and is connected to the second armrest portion 22b. The lower end of the curved portion 22a1 corresponds to the lower end of the second lower vertical surface portion 22a. The lower end of the second lower vertical surface portion 22a corresponds to the lower end of the second side surface portion 22. The upper end of the upward-extending portion 22a2 corresponds to the upper end of the second lower vertical surface portion 22a. In the bathtub device 500, the upward-extending portion 22a2 is inclined outward (to the right) as it extends upward. The upward-extending portion 21a2 does not need to be inclined. The upward extension portion 22a2 includes, for example, a portion that extends linearly in a cross-section (Figure 2) that passes through the injection nozzle 210 along the left-right direction.

[0033] The second armrest portion 22b has an inner curved portion 22b1 and an outer curved portion 22b2. The inner curved portion 22b1 curves outward (to the right) from the upper end of the second lower vertical portion 22a and is connected to the outer curved portion 22b2. The outer curved portion 22b2 curves upward from the upper end of the inner curved portion 22b1 and is connected to the second upper vertical portion 22c. The lower end of the inner curved portion 22b1 corresponds to the lower end of the second armrest portion 22b. The lower end of the second armrest portion 22b corresponds to the upper end of the second lower vertical portion 22a. The upper end of the outer curved portion 22b2 corresponds to the upper end of the second armrest portion 22b. The upper end of the second armrest portion 22b corresponds to the lower end of the second upper vertical portion 22c. The second armrest portion 22b may have an extended portion that extends outward (to the right) between the inner curved portion 22b1 and the outer curved portion 22b2. In this case, the extended portion may include a portion that extends linearly in a cross-section (Figure 2) that passes through the spray nozzle 210 along the left-right direction. In addition, in the bathtub device 500, the second armrest portion 22b is inclined, for example, downward as it moves towards the rear. The second armrest portion 22b does not have to be inclined.

[0034] The second upper vertical section 22c extends upward from the upper end of the second armrest section 22b and is connected to the second rim section 32. The upper end of the second upper vertical section 22c corresponds to the upper end of the second side section 22. In the bathtub device 500, the second upper vertical section 22c is inclined outward (to the right) as it extends upward. The second upper vertical section 22c does not have to be inclined. The second upper vertical section 22c includes, for example, a portion that extends linearly in a cross-section (Figure 2) that passes through the spray nozzle 210 along the left-right direction.

[0035] The second rim portion 32 curves outward (to the right) from the upper end of the second side portion 22. The lower end of the second rim portion 32 corresponds to the upper end of the second side portion 22. The second rim portion 32 may have an extended portion that extends further outward (to the right) from the curved portion. The second rim portion 32 may include a portion that extends linearly in a cross-section (Figure 2) that passes through the nozzle 210 along the left-right direction.

[0036] As shown in Figure 3, the third side portion 23 has a curved portion 23a and an upward-extending portion 23b. The curved portion 23a curves upward from the outer peripheral end 10a of the bottom portion 10 and is connected to the upward-extending portion 23b. The upward-extending portion 23b extends upward from the upper end of the curved portion 23a and is connected to the third rim portion 33. The lower end of the curved portion 23a corresponds to the lower end of the third side portion 23. The upper end of the upward-extending portion 23b corresponds to the upper end of the third side portion 23. In the bathtub device 500, the upward-extending portion 23b is inclined outward (rearward) as it extends upward. The upward-extending portion 23b does not have to be inclined. The upward-extending portion 23b includes, for example, a portion that extends linearly in a cross-section (Figure 3) along the front-rear direction and passing through the spray nozzle 210.

[0037] The third rim portion 33 is curved outward (rearward) from the upper end of the third side portion 23. The lower end of the third rim portion 33 corresponds to the upper end of the third side portion 23. The third rim portion 33 may have an extended portion that extends further outward (rearward) from the curved portion. The third rim portion 33 may include a portion that extends linearly in a cross section (Figure 3) along the front-rear direction and passing through the nozzle 210.

[0038] As shown in Figure 3, the fourth side portion 24 has a curved portion 24a and an upward-extending portion 24b. The curved portion 24a curves upward from the outer peripheral end 10a of the bottom portion 10 and is connected to the upward-extending portion 24b. The upward-extending portion 24b extends upward from the upper end of the curved portion 24a and is connected to the fourth rim portion 34. The lower end of the curved portion 24a corresponds to the lower end of the fourth side portion 24. The upper end of the upward-extending portion 24b corresponds to the upper end of the fourth side portion 24. In the bathtub device 500, the upward-extending portion 24b is inclined outward (forward) as it extends upward. The upward-extending portion 24b does not have to be inclined. The upward-extending portion 24b includes, for example, a portion that extends linearly in a cross-section (Figure 3) along the front-rear direction and passing through the spray nozzle 210.

[0039] The fourth rim portion 34 curves outward (forward) from the upper end of the fourth side portion 24. The lower end of the fourth rim portion 34 corresponds to the upper end of the fourth side portion 24. The fourth rim portion 34 may have an extended portion that extends further outward (forward) from the curved portion. The fourth rim portion 34 may include a portion that extends linearly in a cross-section (Figure 3) along the front-rear direction and passing through the nozzle 210.

[0040] Here, in a cross-section (Figure 2) that passes through the nozzle 210 along the left-right direction, the imaginary straight line extending from the nozzle 210 is defined as the first imaginary straight line IL1. The point where the first imaginary straight line IL1 touches the first rim portion 31 is defined as the first contact point 31x. The angle of the first imaginary straight line IL1 with respect to the horizontal (i.e., the angle between the first imaginary straight line IL1 and the horizontal line HL) is defined as the first angle θ1. The velocity of the water ejected from the nozzle 210 at the first contact point 31x1 is defined as the first velocity V1. The vertical length between the first contact point 31x and the nozzle 210 is defined as the first length H1.

[0041] Similarly, in a cross-section (Figure 2) that passes through the nozzle 210 along the left-right direction, the imaginary straight line extending from the nozzle 210 is defined as the second imaginary straight line IL2. The point where the second imaginary straight line IL2 touches the second rim portion 32 is defined as the second contact point 32x. The angle of the second imaginary straight line IL2 with respect to the horizontal (i.e., the angle between the second imaginary straight line IL2 and the horizontal line HL) is defined as the second angle θ2. The velocity of the water ejected from the nozzle 210 at the second contact point 32x is defined as the second velocity V2. The vertical length between the second contact point 32x and the nozzle 210 is defined as the second length H2.

[0042] Similarly, in a cross-section (Figure 3) along the longitudinal direction passing through the nozzle 210, the imaginary straight line extending from the nozzle 210 is defined as the third imaginary straight line IL3. The point where the third imaginary straight line IL3 touches the third rim portion 33 is defined as the third contact point 33x. The angle of the third imaginary straight line IL3 with respect to the horizontal (i.e., the angle between the third imaginary straight line IL3 and the horizontal line HL) is defined as the third angle θ3. The velocity of the water ejected from the nozzle 210 at the third contact point 33x is defined as the third velocity V3. The vertical length between the third contact point 33x and the nozzle 210 is defined as the third length H3.

[0043] Similarly, in a cross-section (Figure 3) along the longitudinal direction passing through the nozzle 210, the imaginary straight line extending from the nozzle 210 is defined as the fourth imaginary straight line IL4. The point where the fourth imaginary straight line IL4 touches the fourth rim portion 34 is defined as the fourth contact point 34x. The angle of the fourth imaginary straight line IL4 with respect to the horizontal (i.e., the angle between the fourth imaginary straight line IL4 and the horizontal line HL) is defined as the fourth angle θ4. The velocity of the water ejected from the nozzle 210 at the fourth contact point 34x is defined as the fourth velocity V4. The vertical length between the fourth contact point 34x and the nozzle 210 is defined as the fourth length H4.

[0044] Each velocity (1st to 4th velocities V1 to V4) can be calculated from the velocity of the water at the nozzle 210 (initial velocity) and the distance between the nozzle 210 and each contact point. Specifically, the 1st velocity V1 can be calculated from the velocity of the water at the nozzle 210 (initial velocity) and the distance between the nozzle 210 and the 1st contact point 31x. The 2nd velocity V2 can be calculated from the velocity of the water at the nozzle 210 (initial velocity) and the distance between the nozzle 210 and the 2nd contact point 32x. The 3rd velocity V3 can be calculated from the velocity of the water at the nozzle 210 (initial velocity) and the distance between the nozzle 210 and the 3rd contact point 33x. The 4th velocity V4 can be calculated from the velocity of the water at the nozzle 210 (initial velocity) and the distance between the nozzle 210 and the 4th contact point 34x.

[0045] For example, when the velocity (initial velocity) of water at the ejection port 210 is high, each velocity (the first to fourth velocities V1 to V4) increases. When the velocity (initial velocity) of water at the ejection port 210 is low, each velocity (the first to fourth velocities V1 to V4) decreases. Further, when the distance between the ejection port 210 and each contact point is small, each velocity (the first to fourth velocities V1 to V4) increases. When the distance between the ejection port 210 and each contact point is large, each velocity (the first to fourth velocities V1 to V4) decreases.

[0046] The first angle θ1 and the second angle θ2 are larger than the third angle θ3 and the fourth angle θ4, respectively. In other words, the first angle θ1 is larger than the third angle θ3 (θ1>θ3) and larger than the fourth angle θ4 (θ1>θ4). The second angle θ2 is larger than the third angle θ3 (θ2>θ3) and larger than the fourth angle θ4 (θ2>θ4). The first angle θ1 may be larger than the second angle θ2 (θ1>θ2), equal to the second angle θ2 (θ1=θ2), or smaller than the second angle θ2 (θ1<θ2). The third angle θ3 may be larger than the fourth angle θ4 (θ3>θ4), equal to the fourth angle θ4 (θ3=θ4), or smaller than the fourth angle θ4 (θ3<θ4). In the example of Fig. 3, the inclination angle with respect to the horizontal of the third side surface portion 23 (the upward extending portion 23b) located on the back side is smaller than the inclination angle with respect to the horizontal of the fourth side surface portion 24 (the upward extending portion 24b) located on the leg side, so the third angle θ3 is smaller than the fourth angle θ4.

[0047] Further, the third velocity V3 and the fourth velocity V4 are slower than the first velocity V1 and the second velocity V2, respectively. In other words, the third velocity V3 is slower than the first velocity V1 (V3<V1) and slower than the second velocity V2 (V3<V2). The fourth velocity V4 is slower than the first velocity V1 (V4<V1) and slower than the second velocity V2 (V4<V2). The third velocity V3 may be slower than the fourth velocity V4 (V3<V4), equal to the fourth velocity V4 (V3=V4), or faster than the fourth velocity V4 (V3>V4). The first velocity V1 may be slower than the second velocity V2 (V1<V2), equal to the second velocity V2 (V1=V2), or faster than the second velocity V2 (V1>V2).

[0048] In other words, in the bathtub device 500, the spray nozzle 210 is positioned such that all of the following conditions (1) to (8) are met. (1) θ1 > θ3 (2)θ1>θ4 (3) θ2 > θ3 (4)θ2>θ4 (5)V3 <V1 (6) V3 <V2 (7)V4 <V1 (8) V4 <V2

[0049] The smaller the angle of each virtual line with respect to the horizontal, the sharper the angle at which the water from the nozzle 210 hits the rim 30 (contact point). Therefore, when cleaning the bathtub 100 with the bath cover covering the top of the bathtub, the smaller the angle of each virtual line with respect to the horizontal, the more likely water is to leak between the bathtub 100 and the bath cover. In other words, at the third contact point 33x and the fourth contact point 34x, where the angle of the virtual line with respect to the horizontal is small, water is more likely to leak between the bathtub 100 and the bath cover than at the first contact point 31x and the second contact point 32x, where the angle of the virtual line with respect to the horizontal is large. Therefore, depending on the shape of the bathtub 100 and the position where the nozzle 210 of the bathtub cleaning device 200 is located, there is a risk that the sprayed water may leak between the bathtub 100 and the bath cover.

[0050] In contrast, the bathtub device 500 has nozzles 210 positioned such that the water velocity is slower at the third contact point 33x and fourth contact point 34x, where the angle of the virtual line with respect to the horizontal is small, than at the first contact point 31x and second contact point 32x, where the angle of the virtual line with respect to the horizontal is large. This makes it possible to slow down the water velocity at the third contact point 33x and fourth contact point 34x, where water is more likely to leak between the bathtub 100 and the bath lid, compared to the water velocity at the first contact point 31x and second contact point 32x, where water is less likely to leak between the bathtub 100 and the bath lid. Therefore, leakage of the sprayed water from between the bathtub 100 and the bath lid can be suppressed.

[0051] For example, when the distance between the ejection port 210 and the rim portion 30 (side portion 20) increases, the angle of the imaginary straight line with respect to the horizontal decreases, and the velocity of water at the contact point decreases. When the distance between the ejection port 210 and the rim portion 30 (side portion 20) decreases, the angle of the imaginary straight line with respect to the horizontal increases, and the velocity of water at the contact point increases. Therefore, for example, by providing the ejection port 210 at a position where the distance between the ejection port 210 and the rim portion 30 (side portion 20) is appropriate according to the shape of the bathtub 100, all of the above (1) to (8) can be satisfied.

[0052] In Fig. 4, the arrangement region R where the ejection port 210 is arranged on the bottom portion 10 is indicated by a two-dot chain line. For example, when the ejection port 210 is arranged inside the arrangement region R, all of the above (1) to (8) are satisfied. The arrangement region R includes, for example, the center of the bottom portion 10 in top view. The area of the arrangement region R in top view is, for example, not more than half of the area of the bottom portion 10 in top view. The shape of the arrangement region R in top view is, for example, similar to the shape of the lower end of the rim portion 30 (the upper end 20a of the side portion 20) in top view.

[0053] Furthermore, the first length H1 and the second length H2 are respectively shorter than the third length H3 and the fourth length H4. In other words, the first length H1 is shorter than the third length H3 (H1<H3) and shorter than the fourth length H4 (H1<H4). The second length H2 is shorter than the third length H3 (H2<H3) and shorter than the fourth length H4 (H2<H4). The first length H1 may be longer than the second length H2 (H1>H2), equal to the second length H2 (H1=H2), or shorter than the second length H2 (H1<H2). The third length H3 may be longer than the fourth length H4 (H3>H4), equal to the fourth length H4 (H3=H4), or shorter than the fourth length H4 (H3<H4).

[0054] In this way, by making the vertical length between the first contact 31x and the second contact 32x and the nozzle 210 shorter than the vertical length between the third contact 33x and the fourth contact 34x and the nozzle 210, the positions of the first contact 31x and the second contact 32x, where the water velocity is high, can be made lower than the positions of the third contact 33x and the fourth contact 34x, where the water velocity is slow. This further suppresses leakage of the sprayed water from between the bathtub 100 and the bath lid.

[0055] In the bathtub device 500, the shape of the second armrest portion 22b is the same as the shape of the first armrest portion 21b when the left and right sides are reversed. The shape of the second armrest portion 22b may be different from the shape of the first armrest portion 21b when the left and right sides are reversed.

[0056] The embodiment may include the following configurations. (Composition 1) A bathtub having a bottom surface, a side surface extending upward from the outer peripheral end of the bottom surface, and a rim extending outward from the upper end of the side surface, A bathtub cleaning device having a nozzle provided on the bottom surface that sprays water toward the side surface and the rim, Equipped with, The aforementioned side portion is, A first side portion extending in the front-to-back direction, Extending in the front-rear direction, a second side portion facing the first side portion, A third side portion connecting one end of the first side portion and one end of the second side portion, A fourth side portion connecting the other end of the first side portion and the other end of the second side portion, It has, The rim portion is, A first rim portion extending from the upper end of the first side portion toward the outside of the bathtub, A second rim portion extending from the upper end of the second side portion toward the outside of the bathtub, A third rim portion extending from the upper end of the third side portion toward the outside of the bathtub, A fourth rim portion extending from the upper end of the fourth side portion toward the outside of the bathtub, It has, In a cross-section passing through the nozzle along the left-right direction, the point where a first virtual line extending from the nozzle touches the first rim is defined as the first contact point, the angle of the first virtual line with respect to the horizontal is defined as the first angle, the velocity of the water ejected from the nozzle at the first contact point is defined as the first velocity, the point where a second virtual line extending from the nozzle touches the second rim is defined as the second contact point, the angle of the second virtual line with respect to the horizontal is defined as the second angle, and the velocity of the water ejected from the nozzle at the second contact point is defined as the second velocity. In a cross-section along the front-rear direction passing through the nozzle, the point where a third virtual line extending from the nozzle touches the third rim is defined as the third contact point, the angle of the third virtual line with respect to the horizontal is defined as the third angle, the velocity of the water ejected from the nozzle at the third contact point is defined as the third velocity, the point where a fourth virtual line extending from the nozzle touches the fourth rim is defined as the fourth contact point, the angle of the fourth virtual line with respect to the horizontal is defined as the fourth angle, and the velocity of the water ejected from the nozzle at the fourth contact point is defined as the fourth velocity, The first angle and the second angle are each greater than the third angle and the fourth angle. A bathtub device in which the third speed and the fourth speed are slower than the first speed and the second speed, respectively. (Configuration 2) When the vertical length between the first contact and the nozzle is defined as the first length, the vertical length between the second contact and the nozzle is defined as the second length, the vertical length between the third contact and the nozzle is defined as the third length, and the vertical length between the fourth contact and the nozzle is defined as the fourth length, The bathtub apparatus according to configuration 1, wherein the first length and the second length are each shorter than the third length and the fourth length.

[0057] As described above, according to the embodiment, a bathtub device is provided that can suppress water sprayed from the nozzle of the bathtub cleaning device from leaking between the bathtub and the bathtub lid.

[0058] Embodiments of the present invention have been described above. However, the present invention is not limited to these descriptions. Modifications made by those skilled in the art to the above-described embodiments are also included within the scope of the present invention, as long as they retain the features of the present invention. For example, the shape, dimensions, material, and arrangement of each element of a bathtub device, etc., are not limited to those exemplified and can be modified as appropriate. Furthermore, the elements of each of the embodiments described above can be combined to the extent technically possible, and these combinations are also included within the scope of the present invention insofar as they include the features of the present invention. [Explanation of Symbols]

[0059] 10: Bottom part 10a: Outer edge 11: Drain port 20: Side part 20a: Upper end 21:First side part 21a: 1st lower elevation section 21a1: Curved section 21a2: Extended part 21b: First armrest section 21b1: Inner curved portion 21b2:Outside curved part 21c: 1st upper elevation section 21p: One end 21q: Other end 22:Second side part 22a: Second lower elevation 22a1: Curved section 22a2: Extended part 22b: Second armrest section 22b1: Inner curved portion 22b2:Outside curved part 22c: 2nd upper elevation section 22p: One end 22q: Other end 23: Third side part 23a: Curved section 23b: Extended part 24: 4th side part 24a: Curved section 24b: Extended part 30: Rim section 31: First rim section 31x: 1st contact 32: Second rim section 32x: 2nd contact 33: Third rim section 33x: 3rd contact 34: Fourth rim section 34x: 4th contact 100: Bathtub 200: Bathtub cleaning device 210: Nozzle 500: Bathtub equipment H1: First length H2: Second length H3: Third length H4: 4th length HL: Horizontal line IL1: First virtual line IL2: Second virtual line IL3: Third virtual line IL4: Fourth virtual line R: Placement area θ1: 1st angle θ2: 2nd angle θ3: 3rd angle θ4: 4th angle

Claims

1. A bathtub having a bottom surface, a side surface extending upward from the outer peripheral end of the bottom surface, and a rim extending outward from the upper end of the side surface, A bathtub cleaning device having a nozzle provided on the bottom surface that sprays water toward the side surface and the rim, Equipped with, The aforementioned side portion is, A first side portion extending in the front-to-back direction, A second side portion extends in the front-rear direction and faces the first side portion, A third side portion connecting one end of the first side portion and one end of the second side portion, A fourth side portion connecting the other end of the first side portion and the other end of the second side portion, It has, The rim portion is, A first rim portion extending from the upper end of the first side portion toward the outside of the bathtub, A second rim portion extending from the upper end of the second side portion toward the outside of the bathtub, A third rim portion extending from the upper end of the third side portion toward the outside of the bathtub, A fourth rim portion extending from the upper end of the fourth side portion toward the outside of the bathtub, It has, In a cross-section passing through the nozzle along the left-right direction, the point where a first virtual line extending from the nozzle touches the first rim is defined as the first contact point, the angle of the first virtual line with respect to the horizontal is defined as the first angle, the velocity of the water ejected from the nozzle at the first contact point is defined as the first velocity, the point where a second virtual line extending from the nozzle touches the second rim is defined as the second contact point, the angle of the second virtual line with respect to the horizontal is defined as the second angle, and the velocity of the water ejected from the nozzle at the second contact point is defined as the second velocity. In a cross-section along the front-rear direction passing through the nozzle, the point where a third virtual line extending from the nozzle touches the third rim is defined as the third contact point, the angle of the third virtual line with respect to the horizontal is defined as the third angle, the velocity of the water ejected from the nozzle at the third contact point is defined as the third velocity, the point where a fourth virtual line extending from the nozzle touches the fourth rim is defined as the fourth contact point, the angle of the fourth virtual line with respect to the horizontal is defined as the fourth angle, and the velocity of the water ejected from the nozzle at the fourth contact point is defined as the fourth velocity, The first angle and the second angle are each greater than the third angle and the fourth angle, A bathtub device in which the third speed and the fourth speed are slower than the first speed and the second speed, respectively.

2. When the vertical length between the first contact and the nozzle is defined as the first length, the vertical length between the second contact and the nozzle is defined as the second length, the vertical length between the third contact and the nozzle is defined as the third length, and the vertical length between the fourth contact and the nozzle is defined as the fourth length, The bathtub apparatus according to claim 1, wherein the first length and the second length are each shorter than the third length and the fourth length.

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