JP7377474B2 - bathtub equipment - Google Patents

Description

The present invention relates to a bathtub, and more particularly to a bathtub device including a pillow part on which a bather can rest his or her head, and a spout that spouts water toward the shoulders of a bather.

Patent Document 1 discloses a bathtub device that includes a pillow part on which a bather's head is placed and a water spouting device that sprays bathtub water onto the shoulders of the bather, on the top of the bathtub. According to this bathtub device, a bather rests his or her head on a pillow part whose top surface is horizontal and has a near-horizontal inclination angle, in a relaxed posture, and pours bathwater onto the shoulders that are not immersed in the bathwater. , you can warm your upper body.

JP2016-8428A

The present inventors focused on the way the hot water spreads after it lands on the shoulders in order to further improve the feeling of warmth in the upper body of a bather in a relaxed posture with his or her head resting on the pillow. Specifically, by making sure that the hot water that lands on the shoulders spreads to both the front (chest side) and back (dorsal side) of the bather, the upper body of the body that is not immersed in the hot water in the bathtub is We discovered that warming the entire body is effective.

The posture of the bather (the angle of inclination of the upper body when viewed from the side) is important in order for the hot water to spread to both the front and back of the bather after it lands on the shoulders. Since this differs from person to person, the present inventors focused on the shape of the backrest of the bathtub in order to specify the desired bathing posture. Specifically, the inventors have discovered that by fitting the bather's back to the backrest of the bathtub, the bather's posture can be determined to be a desired posture.

However, when a pillow member as in Patent Document 1 is provided, the shape of the pillow part on which the head is placed is formed horizontally or at a horizontal and near-horizontal inclination angle, so the posture of the bather is not regulated by the pillow part. When the bather relaxes in order to relax, the bather's back naturally moves away from the backrest of the bathtub, creating a new problem in that the bather's bathing posture does not become the desired posture.

In view of the above-mentioned problems, the present invention has been developed so that even when the bather rests his or her head on the pillow and feels weak, the back of the bather naturally fits the backrest of the bathtub, and the water after the bather lands on the shoulders is heated. To provide a bathtub device that can easily spread water to both the front and back sides of a bather.

In order to achieve the above object, the present invention provides a bathtub having a backrest portion on which a bather in a bathing posture can touch his or her back, a rim portion disposed above the backrest portion, and a rim portion. A pillow part is placed above the bathtub and is formed separately from the bathtub, on which a bather can rest his or her head while in a bathing position. The spout of the shoulder bath spouting device that spews water toward the shoulders, and the front ends of the backrest and pillow portion of the bathtub are both curved in a concave shape when viewed from above.
When viewed from above, the front of the water spouting section of the shoulder bath spouting device in the water spouting direction is covered by a pillow section, and when viewed from above, the pillow section that covers the front of the water spouting section of the shoulder bath spouting device is covered by the pillow section. The front end is concavely curved.
In a top view, the front end portion of the shoulder bath spouting device covered by the pillow part is curved in a concave shape together with the backrest part of the bathtub and the front end of the pillow part.
In a top view, the front end of the water spouting part of the shoulder bath water spouting device is curved in a concave shape.

According to the bathtub of the present invention, even when the bather rests his or her head on the pillow and feels relaxed, the back of the bather naturally fits with the backrest of the bathtub, and the hot water after landing on the shoulders is absorbed into the bath. To provide a bathtub device that can easily spread to both the front and back sides of a person.

1 is a schematic perspective view showing a bathtub device to which a bathtub water discharging device according to an embodiment of the present invention is applied. FIG. 2 is a top view of FIG. 1; 3 is a schematic cross-sectional view taken along line III-III in FIG. 2. FIG. FIG. 2 is a side view of FIG. 1; FIG. 4 is a partially enlarged cross-sectional view showing the water discharging device for a bathtub according to the embodiment of the present invention shown in FIG. 3 in a state in which the left and right sides of the page are reversed. 4 is a cross-sectional view taken along line VI-VI in FIG. 3. FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. 6. FIG. 6 is a cross-sectional view taken along line VIII-VIII in FIG. 5. FIG. FIG. 1 is a front view of a bathtub water discharging device according to an embodiment of the present invention. FIG. 3 is a diagram illustrating how water that has flowed into the storage chamber of the water spouting device for a bathtub according to the embodiment of the present invention passes through an inclined portion and a throttle channel and is spouted from a water spout portion. FIG. 2 is a perspective view showing water being spouted from a water spout to a user sitting in a bathtub equipped with a water spouting device for a bathtub according to an embodiment of the present invention. It is a sectional view showing a pillow part according to an embodiment of the present invention. 1 is a schematic cross-sectional view showing a bather taking a bath in a bathtub device according to an embodiment of the present invention. It is a schematic sectional view showing a bather taking a bath in a bathtub device that is a comparative example of the present invention.

Next, a bathtub device to which a bathtub water discharging device according to an embodiment of the present invention is applied will be described with reference to the accompanying drawings.
FIG. 1 is a schematic perspective view showing a bathtub device to which a bathtub water discharging device according to an embodiment of the present invention is applied, FIG. 2 is a top view of FIG. 1, and FIG. 3 is a view taken along line III-III in FIG. FIG. 4 is a side view of FIG. 1;

As shown in FIGS. 1 and 2, a bathtub device 3 to which a bathtub water discharging device (bathtub water circulation type water discharging device) 1 according to an embodiment of the present invention is applied includes a bathtub 2 and an operation section 30 ( The bathtub 2 includes a water supply unit 10 that supplies hot water to the bathtub 2 by operating the bathtub (described later). A bathtub water discharging device 1 is installed in a bathtub 2. The bathtub 2 stores water (including hot water) supplied from the water supply section 10. In addition, in this embodiment, the side where the spout part (water spout) 4 of the water spout part 5 mentioned later of the water spouting device 1 for bathtubs is provided is the front direction, and the side where the storage chamber 36 is provided on the opposite side is the rear direction. , when the spout section 4 is viewed from the front, the right side is referred to as the right direction, and the left side is referred to as the left direction. The temperature of the water that the water supply unit 10 supplies into the bathtub 2 is set by the user H operating the operating unit 30 (described later).

The bathtub 2 is connected to a bottom 2a, a vertical wall 2b on the short side that the back of the user H contacts, a side wall 2d on the long side of the bathtub 2, and an upper part of the vertical wall 2b, and forms the top surface of the bathtub 2. It has an upper end portion (rim portion) 2c. One side of the vertical wall 2b (the side where the water spouting device 1 for a bathtub is installed) is a backrest portion 7 on which a bather in a bathing posture can rest his or her back. The backrest portion 7 is inclined downward toward the inner side of the bathtub 2 at a first inclination angle, for example, 20 degrees with respect to the vertical plane (see FIG. 13). Note that this first inclination angle is defined by an imaginary line connecting the upper end of the backrest portion 7 (the position where the upper end portion 2c and the backrest portion 7 intersect) and the lower end (the position where the bottom portion 2a and the backrest portion 7 intersect). is the angle of The upper end portion 2c is set at a height relatively close to the upper body of the user H sitting in the bathtub, such as the head, neck, or shoulders. A first water intake 6 and a second water intake 22 are formed in the side wall 2d. In the spout section 4, a pillow section 8 on which a bather in a bathing posture can rest his or her head is arranged above the backrest section. It is arranged between the backrest part 7 and the pillow part 8, and sprays water toward the shoulders of the bather in the bathing position.
The bathtub 2 is a so-called round type bathtub in which the upper part of the wall surface of the bathtub 2 is formed in an arc shape in the horizontal direction. The bathtub 2 is a so-called cradle-type bathtub in which the upper part of the wall of the bathtub 2 is formed horizontally in an arc shape, a circular bathtub, or a wide-type bathtub in which the vertical wall 2b forms a long side. Good too.

As shown in FIG. 3, the water discharge device 1 for a bathtub discharges water supplied from a supply pipe into a bathtub 2. The bathtub water discharging device 1 is arranged at the inner edge of the upper end 2c of the bathtub 2. The water spouting device 1 for a bathtub is provided with a water spout portion 4 of a water spouting portion 5 that spews water horizontally and in a strip shape toward the inside of the bathtub 2 .

As shown in FIGS. 3 and 4, the bathtub device 3 further includes a first flow path 8 extending from the first water intake port 6, and a first flow path 8 that is provided on the first flow path 8 and that sucks water in the bathtub 2. A pump (supply unit) 10 that pumps water to the downstream side, a three-way valve 12 that controls the flow of water at the downstream end of the first flow path 8, and a second flow path 14 that extends from the three-way valve 12 to the water spout 4 side. , a third flow path 16 extending separately from the second flow path 14 from the three-way valve 12, a blow water discharge section 18 that blows water supplied from the third flow path 16 into the bathtub 2, and a third flow path 16 extending from the three-way valve 12 separately from the second flow path 14; A jet pump unit 20 provided in the downstream portion, a fourth flow path 24 extending from the second water intake port 22 to the jet pump unit 20, a rising pipe 26 extending vertically upward from the jet pump unit 20, the pump 10 and the three-way valve 12. , a hot water temperature sensor (detection section) 9 that detects the temperature of water in the bathtub 2, and an operation section 30 operated by the user H. The detection section 9 is controlled by a control section 28. Note that this detection unit 9 is formed on the inner wall of the bathtub 2, not on the wall side where the water discharging device 1 is installed, but on the wall side where the first water intake port 6 or the second water intake port 22 is formed. It is more preferable that

The pump 10 is electrically connected to the control section 28 and is driven and controlled by the control section 28.

The three-way valve 12 can selectively supply water supplied from the first flow path 8 to either or both of the second flow path 14 and the third flow path 16. The three-way valve 12 can freely change the distribution ratio of the flow rate. The three-way valve 12 is electrically connected to the control section 28, and is electrically controlled to open and close by the control section 28. The second flow path 14 forms a flow path extending from the three-way valve 12 to the jet pump unit 20.

The control unit 28 is attached to the back side of the bathroom wall (not shown). The control unit 28 is electrically connected to the pump 10, the three-way valve 12, the operating unit 30, etc., and is capable of operating each of the above-mentioned parts. The control unit 28 receives operation signals from the operation unit 30 or controls each device according to a stored program or the like. The control unit 28 includes a storage device (not shown) such as a memory and a calculation device (not shown) that can appropriately control the water discharging device 1 for a bathtub.

The operation unit 30 is provided so that the user H can operate the water discharging device 1 for a bathtub on and off, and is attached to a wall in the bathroom. Information about the operation of the operating section 30 by the user H is sent from the operating section 30 to the control section 28 in the form of an electrical signal.

The jet pump unit 20 includes a chamber portion 32 in which water drawn by the jet pump action is stored, and a jet nozzle 34 disposed at the downstream end of the second flow path 14. By employing the jet pump unit 20, the bathtub water spouting device 1 can spout a large amount of hot water from the water spout 4 using a relatively small pump 10.

The chamber section 32 forms a box-shaped water storage chamber, and the downstream end of the fourth flow path 24 is connected to the chamber section 32 . The chamber portion 32 communicates with the bathtub 2. A jet nozzle 34 is attached to the bottom of the chamber portion 32 so as to face vertically upward. An opening is formed on the upper surface of the chamber portion 32 at a position facing the jet nozzle 34, and the rising pipe 26 extends upward from this opening.

The jet nozzle 34 injects water supplied from the pump 10 into the riser pipe 26 through the chamber portion 32 . Since the jet nozzle 34 injects water through the chamber part 32, it induces a jet pump action that draws water from inside the chamber part 32. The jet nozzle 34 is formed so that the diameter of its internal flow path is narrower than the diameter of the second flow path 14 on the upstream side of the jet nozzle 34 . Therefore, the water pumped by the pump 10 is further accelerated within the jet nozzle 34 and is ejected from the jet nozzle 34 as a high-speed water stream. The high-speed jet stream ejected from the jet nozzle 34 draws in water within the chamber portion 32, thereby increasing its flow rate and decreasing its flow velocity.
The riser pipe 26 forms a circular tubular flow path extending vertically upward from the chamber portion 32 .

Next, the bathtub water discharging device 1 will be described with reference to FIGS. 5 to 9.
FIG. 5 is a partially enlarged cross-sectional view showing the bathtub water discharging device according to the embodiment of the present invention shown in FIG. 3 with the left and right sides of the page reversed, and FIG. 7 is a sectional view taken along line VII-VII of FIG. 6, FIG. 8 is a sectional view taken along line VIII-VIII of FIG. 5, and FIG. 9 is a sectional view taken along line VIII-VIII of FIG. FIG. 1 is a front view of a bathtub water discharging device according to an embodiment of the present invention.

The water spouting device 1 for a bathtub includes a storage chamber 36 that temporarily stores water flowing in from the riser pipe 26 and expands it inside itself, and an inclined portion 42 provided between the storage chamber 36 and the throttle channel 38. , has a water spout portion 4 of the water spout portion 5 formed in a wide shape extending in the left-right direction, and a throttle flow path 38 forming a flow path narrower than the storage chamber 36 and extending to the water spout portion 4. There is.

The storage chamber 36 is connected to the downstream end of the riser pipe 26. The storage chamber 36 is formed so that its interior extends in the left-right direction. The storage chamber 36 is formed so that the front side of the side wall 36e expands in the left-right direction when viewed from above. The side wall 36e of the storage chamber 36 is formed to gradually curve forward as it goes from the rear side to the front side. The storage chamber 36 forms a flow path that extends in the left-right direction, and is configured to decelerate and temporarily store water in the storage chamber 36, and to spread the water in the left-right direction.

A rib 44 is provided in the storage chamber 36 between the connecting portion of the riser pipe 26 and the inclined portion 42 . This rib 44 is arranged near the connection part of the riser pipe 26. The rib 44 forms a convex portion projecting downward from the ceiling surface 36d, and is formed to reduce the cross-sectional area of the flow path between the rib 44 and the opposing bottom surface 36b. The rib 44 is formed so as to cross the inside of the storage chamber 36 in the left-right direction from the right side wall 36e of the storage chamber 36 to the left side wall. Note that the rib 44 may be formed only in the vicinity of the side wall 36e.

The cross-sectional area of the flow path is reduced by the ribs 44, and the water flow that has flowed into the storage chamber 36 and has been decelerated is accelerated again, and the water flowing along the side wall 36e of the storage chamber 36 is separated from the curved surface of the side wall 36e. Prevents the formation of vortices. Since the cross-sectional area of the flow path between the rib 44 and the bottom surface 36b of the storage chamber 36 is narrowed almost uniformly in the left-right direction, water is accelerated forward almost uniformly in the left-right direction. The ribs 44 form a left-right flow rate equalization means that makes the flow rate of water flowing into the downstream throttle channel 38 substantially uniform in the left-right direction.

The inclined portion 42 forms an inclined surface rising from the storage chamber 36 toward the throttle channel 38 on the bottom surface between the storage chamber 36 and the throttle channel 38 . The inclined portion 42 is formed in the same shape in the left-right direction, and has a constant length and inclination angle in the front-back direction at any position. The inclined portion 42 is formed so that the cross-sectional area of the flow path in the vertical direction gradually decreases toward the front side. Therefore, the inclined portion 42 can gradually accelerate the flow of water while suppressing the disturbance of the flow.

An upstream end 42a of the inclined portion 42, which is a connecting portion with the storage chamber 36, is formed to extend parallel to an imaginary line A connecting the left and right end portions 4b of the spout portion 4. The downstream end 42b of the inclined portion 42 (and the inlet 38b of the throttle channel 38), which is the connecting portion with the throttle channel 38, is also formed to extend parallel to the imaginary line A connecting the left and right end portions 4b of the water spout section 4. has been done. The length L2 in the front-rear direction from the upstream end 42a of the inclined portion 42 to the water spout portion 4 through the center portion 38c of the throttle channel 38 is the length L2 from the upstream end 42a to the water spout portion 4 passing through the left and right end portions 38d of the throttle channel 38. It is formed shorter than the length L1 in the front-rear direction up to 4.

The spout 4 forms an inward and horizontal opening on the upper end 2c of the bathtub 2, and spouts a wide stream of water in the left-right direction toward the neck and shoulders of the user sitting in the bathtub. It is designed to perform a shoulder bath and water spout. The water spout portion 4 is curved so that the center portion 4a in the left and right direction of the water spout portion 4 is positioned further back than the left and right end portions 4b when viewed from above. The spout portion 4 is formed in an arc shape along the arc-shaped vertical wall 2b when viewed from above. Further, the water spout portion 4 forms a rectangular opening when viewed from the front. The width of the opening of the water spout portion 4 is approximately the width of the user's shoulders, and the height of the opening is approximately several millimeters, so that water is spouted from the water spout portion 4 in the form of a film.

Next, the throttle channel 38 will be explained in detail with reference to FIGS. 5 to 9.
The throttle channel 38 is formed between the inclined portion 42 and the water spout portion 4 . The constricted flow path 38 is formed so that the height of the flow path is lower than the height of the flow path within the storage chamber 36 and the inclined portion 42 . Furthermore, the throttle channel 38 has a channel cross-sectional area that is smaller than the channel cross-sectional area of the storage chamber 36 and the channel cross-sectional area of the inclined portion 42 so as to accelerate the inflowing water. A bottom surface 38a of the throttle channel 38 is formed substantially flat. A drainage groove 40 for suppressing residual water is formed in the bottom of the throttle channel 38, the inclined portion 42, and the storage chamber 36.

When viewed from above, the throttle flow path 38 has an inlet 38b formed in a straight line, and is curved so that a center portion 38c in the left and right direction of the outlet (water spout portion 4) is positioned rearward than left and right end portions 38d. has been done. The throttle channel 38 includes a flow rate adjusting means that makes the decrease in the flow rate of water passing through the center portion 38c smaller than the decrease in the flow rate of water passing through the left and right end portions 38d on the left and right end sides of the center portion 38c. There is. The flow rate adjusting means of the throttle channel 38 is formed by making the length X2 of the center portion 38c of the throttle channel 38 shorter than the length X1 of the left and right end portions 38d. The length X2 is the length from the inlet 38b of the central portion 38c to the spout portion 4. The length X1 is the length from the inlet 38b of the left and right end portions 38d to the spout portion 4. Note that the throttle channel 38 has a constant height H1 from the inlet 38b to the water spout portion 4. Further, in the flow rate adjusting means of the throttle channel 38, the height H1 of the channel from the center portion 38c to the left and right end portions 38d of the throttle channel 38 is formed to be constant. Thereby, the pressure loss of water passing through the center portion 38c can be made smaller than the pressure loss of water passing through the left and right end portions 38d without changing the height of the flow path. Therefore, by setting the height of the water spout portion 4 to be constant from the center portion 38c to the left and right end portions 38d, the thickness of the water discharged in a wide film will be disturbed and the discharged film will be While suppressing water from being divided into left and right sides, the flow rate of water spouted from the center portion 38c of the spout portion 4 is set to be lower than the flow speed of water spouted from the left and right end portions 38d of the spout portion 4. Can be made larger. Note that when the height H1 is constant, for example, when the difference between the height of the center portion 38c and the height of the left and right end portions 38d is approximately constant within a predetermined range, for example, the height of the center portion 38c is This also includes cases where the height is 90% to 110% of the height of .

As shown in FIG. 8, the inlet 38b of the throttle channel 38 is formed in a rectangular shape, and the height H1 of the channel is constant from the center portion 38c to the left and right end portions 38d. Further, as shown in FIG. 9, the water spout portion 4, which is the outlet of the throttle channel 38, is also formed in a rectangular shape when viewed from the front. ) The height H2 of the flow path is formed to be constant. The height H2 of the flow path of the water spout portion 4 is narrowed slightly lower than the height H1 of the flow path of the throttle flow path 38. Note that the height H2 of the flow path of the water spout portion 4 may be made the same as the height H1 of the flow path of the throttle flow path 38. Note that the height H2 is constant when the difference between the height of the center portion 4a and the height of the left and right end portions 4b is approximately constant within a predetermined range, for example, the height of the center portion 4a is equal to the height of the left and right end portions 4b This also includes cases where the height is 90% to 110% of the height of .

Next, with reference to FIGS. 10 and 11, the operation (effect) of discharging water from the spout portion 4 by the bathtub water discharging device 1 will be described.
The control unit 28 drives the pump 10 in accordance with the operation of the operating unit 30 by the user H. The pump 10 sucks water in the bathtub 2 from the first channel 8 and pumps it into the second channel 14 on the downstream side. Water is supplied from the second channel 14 to the jet nozzle 34 , and the hot water jetted from the jet nozzle 34 rises through the riser pipe 26 while drawing water in the chamber section 32 by the jet pump action, and flows into the storage chamber 36 . Inflow.

As shown in FIG. 10, water flowing into the storage chamber 36 from the riser pipe 26 is decelerated in the storage chamber 36 and flows so as to spread in the left-right direction, as shown by arrow F1. This water flows between the rib 44 and the bottom surface 36b before it separates from the curved surface of the side wall 36e and forms a vortex. At this time, since the cross-sectional area of the flow path between the rib 44 and the bottom surface 36b is narrowed, the water is accelerated as shown by arrow F2. Since F2 flows under the rib 44, it is shown by a dotted line. At this time, since the cross-sectional area of the flow path between the rib 44 and the bottom surface 36b is narrowed almost uniformly in the left-right direction, the water is accelerated almost uniformly at any position in the left-right direction. At this time, the ribs 44 accelerate each water flow while maintaining its vector. Therefore, it is possible to suppress the formation of vortices due to water acceleration, and also to form a flow that is substantially uniformly rectified in the left and right direction.

The water that has passed through the ribs 44 is decelerated again within the storage chamber 36 and further spreads in the left and right direction as shown by arrow F3. At this time, the water is prevented from being disturbed so much as to form a vortex, and a substantially uniform rectified flow can be maintained at any position in the left and right direction.

The inclined portion 42 is formed so that the cross-sectional area of the flow path gradually decreases toward the front side. Therefore, the water that has spread in the left-right direction is gradually accelerated again at the inclined portion 42, as shown by arrow F4. Further, an upstream end 42a of the inclined portion 42, which is a connecting portion between the storage chamber 36 and the inclined portion 42, is formed to extend parallel to an imaginary line A connecting the left and right end portions 4b of the water spout portion 4. Therefore, water flows into the inclined portion 42 from the upstream end 42a while suppressing turbulence and maintaining the water flow vector. Therefore, the water can flow so as to be spread relatively evenly with respect to the virtual line A. Further, a downstream end 42b of the inclined portion 42 (and an inlet 38b of the throttled channel 38), which is a connection portion between the throttle channel 38 and the inclined portion 42, is formed to extend parallel to the imaginary line A. Therefore, water flows into the throttle channel 38 from the downstream end 42b while suppressing turbulence and maintaining the water flow vector. Therefore, the water can flow so as to be spread relatively evenly with respect to the virtual line A. Therefore, the flow of water is gradually accelerated at the inclined portion 42 while being suppressed from being disturbed, and flows into the throttle channel 38 while maintaining a substantially uniform rectified flow in the left-right direction.
According to the structure of the inclined part 42 like this embodiment, the upstream end 42a and the downstream end 42b of the inclined part 42 are curved and formed corresponding to the shape of the water spout part 4 like the comparative example mentioned later. It is possible to prevent the vector of the water flow from bending along the curved slope portion 42 and making it impossible to discharge water uniformly from side to side, as in the case where the water flow is bent.
Note that "parallel" refers to a case where the connection portion between the throttle channel 38 and the inclined portion 42 is substantially parallel to the virtual line A by being inclined within a relatively small angle range, for example, the connection portion between the throttle channel 38 and the inclined portion 42 is This also includes a case where the connecting portion with the portion 42 is inclined at an angle of −5 degrees to 5 degrees with respect to the virtual line A. Similarly, "parallel" means that the connecting portion between the storage chamber 36 and the inclined part 42 is substantially parallel to the imaginary line A by being inclined within a relatively small angle range, for example, the connecting part between the storage chamber 36 and the inclined part 42 is This also includes a case where the connecting portion with 42 is inclined at an angle of -5 degrees to 5 degrees with respect to the virtual line A.

The water flowing in from the inclined portion 42 is further accelerated in the throttle channel 38. As shown by arrow F5, the water flows from the inlet 38b of the throttle channel 38 to the water spout portion 4 while maintaining the almost uniformly rectified flow direction when it entered. In this way, the throttle channel 38 basically has the function of accelerating water, but due to pressure loss due to resistance on the channel walls such as the bottom surface 38a (see FIG. 5) and the ceiling surface, the throttle channel 38 basically has the function of accelerating water. The flow rate of water passing through is reduced by a predetermined amount. As shown in FIG. 6, the pressure loss of water passing through the center portion 38c of the throttle channel 38 is made smaller than the pressure loss of water passing through the left and right end portions 38d by the flow rate adjusting means of the throttle channel 38. I can do it. Therefore, the decrease in the flow rate of water passing through the center portion 38c is smaller than the decrease in the flow rate of water passing through the left and right end portions 38d. Therefore, the flow rate of water spouted from the center portion 4a of the water spout portion 4 can be made higher than the flow speed of water spouted from the left and right end portions 4b.

As shown by the arrow F6 in FIG. 10 and also shown in FIG. 11, the water spouted from the water spout 4 flows in the air as a stable belt-like (water film-like) stream of almost constant width and thickness. Draws a parabola and flows downward. The flying distance of water spouted from the center portion 4a of the water spout portion 4 is made greater than the flying distance of water spouted from the left and right end portions 4b of the water spout portion 4. Therefore, the range B of water landing on the upper body such as the shoulders and back of the user H who is sitting in the bathtub 2 is a range formed linearly in the left-right direction. The water landing range B has approximately the same height in the left-right direction, and is relatively uniform in the left-right direction. Since water is spouted in a linear manner toward the user H, the spouted water can efficiently land on the user H, and the user H can be given a relatively uniform bathing experience. , it is possible to improve the bathing comfort of the user H.

According to the bathtub water discharging device 1 according to the embodiment of the present invention described above, the throttle flow path 38 reduces the flow rate of water passing through the center portion 38c of the throttle flow path 38, and reduces the flow rate of water passing through the left and right end portions 38d. Since the flow rate adjustment means is provided to make the flow rate smaller than the decrease in the flow rate, the flow rate of the water spouted from the center portion 4a of the water spout portion 4 is adjusted to be lower than the flow speed of the water spouted from the left and right end portions 4b of the water spout portion 4. can be greater than the flow rate. Therefore, the water spouted from the center portion 4a of the water spout portion 4 can be spouted to a position ahead of the water spouted from the left and right end portions 4b. Therefore, according to the present invention, even if the water spout portion 4 is formed in a curved manner such that the center portion 4a of the opening portion of the water spout portion 4 is located rearward than the left and right end portions 4b, the user's shoulder The shape of the water jetted toward the vicinity can be made linear and less likely to be curved, and the user's bathing comfort can be improved.
Further, according to the present invention, the water that has flowed into the storage chamber 36 is spread in the left-right direction in the storage chamber 36, and then passes through the throttle flow path 38 provided with a flow rate adjusting means. As a result, a wide stream of water is easily formed in the left-right direction, and the shape of the water stream is less likely to be curved and can be made into a linear shape, thereby improving the user's bathing comfort.

According to the bathtub water discharging device 1 according to the embodiment of the present invention, the flow rate adjusting means of the throttle channel 38 adjusts the length X2 of the center portion 38c of the throttle channel 38 in the front-rear direction to the front and back of the left and right end portions 38d. It is formed by making the length in the direction shorter than the length X1. Thereby, the pressure loss of water passing through the central portion 38c of the throttle channel 38 can be made smaller than the pressure loss of water passing through the left and right end portions 38d. Therefore, the flow rate of water spouted from the center portion 4a of the spout portion 4 can be made higher than the flow speed of water spouted from the left and right end portions 4b of the spout portion 4. Therefore, according to the present invention, even if the water spout part 4 is curved so that the central part 4a of the opening part of the water spout part 4 is located behind the left and right end parts 4b, a relatively simple process can be performed. With this configuration, the shape of the water jetted toward the user's shoulders can be made less likely to be curved.

Furthermore, according to the water spouting device 1 for a bathtub according to the embodiment of the present invention, the water spout portion 4 is formed by making the height of the flow path from the center portion 4a to the left and right end portions 4b constant. Thereby, the pressure loss of water passing through the center portion 4a of the spout portion 4 can be made smaller than the pressure loss of water passing through the left and right end portions 4b. Therefore, according to the present invention, by making the height of the water spout portion 4 constant from the center portion 4a to the left and right end portions 4b, the thickness of the water discharged in a wide film shape is not disturbed. While suppressing that the discharged film-like water is divided into left and right sides, the flow rate of the water discharged from the center portion 4a of the spout portion 4 is controlled to be lower than that of the water spouted from the left and right end portions 4b of the spout portion 4. The water flow rate can be higher than the water flow rate.

Furthermore, according to the bathtub water discharging device 1 according to the embodiment of the present invention, the inclined portion 42 suppresses water heading toward the throttle channel 38 from being accelerated and generating turbulent flow. Further, a connection portion between the inclined portion 42 and the throttle channel 38 is formed to extend parallel to the imaginary line A connecting the left and right end portions 4b of the water spout portion 4. Therefore, even when the throttle channel 38 is provided with a flow rate adjusting means that makes the decrease in the flow rate of water passing through the central portion 38c smaller than the decrease in the flow rate of water passing through the left and right end portions 38d, , water flowing into the throttle channel 38 from the inclined portion 42 can flow so as to spread relatively evenly with respect to the imaginary line A. Therefore, according to the present invention, it is possible to prevent the water flowing from the inclined portion 42 to the throttle channel 38 from being drawn by the flow in the central portion 38c where the decrease in water flow velocity is small, and causing contracted flow. Thereby, it is possible to suppress disturbances in the shape of the water jetted toward the user's H's shoulders.

Furthermore, according to the water discharging device 1 for a bathtub according to the embodiment of the present invention, the inclined portion 42 suppresses the acceleration of water toward the throttle channel 38 and the generation of turbulent flow. Further, a connecting portion between the storage chamber 36 and the inclined portion 42 is formed to extend parallel to an imaginary line A connecting the left and right end portions 4b of the water spout portion 4. Therefore, even when the throttle channel 38 is provided with a flow rate adjusting means that makes the decrease in the flow rate of water passing through the central portion 38c smaller than the decrease in the flow rate of water passing through the left and right end portions 38d, , water flowing from the storage chamber 36 to the inclined portion 42 can flow so as to spread relatively evenly with respect to the imaginary line A. Therefore, according to the present invention, the water flowing into the constriction channel 38 from the inclined portion 42 flows so as to spread relatively evenly, and is drawn by the flow in the central portion 38c where the drop in water flow velocity is small, resulting in a contracted flow. This can prevent the occurrence of Thereby, it is possible to suppress disturbances in the shape of the water jetted toward the user's H's shoulders.

FIG. 12 is a sectional view showing a pillow part according to an embodiment of the present invention.
As shown in FIG. 12, the upper surface of the pillow part 8 is directed toward the inner side of the bathtub 2 at a second inclination angle, for example, 45 degrees, which is larger than the first inclination angle (20 degrees) with respect to the vertical plane. It has a downwardly inclined surface P that is downwardly inclined. Note that this second inclination angle is the angle of the tangent to the portion of the upper surface of the pillow portion 8 that is located furthest inward of the bathtub 2 . A virtual extending surface L1, which is the downwardly extending downwardly inclined surface P, is formed to have a convex curved surface so as to be connected to the backrest portion 7 without any difference in level.
In the present invention, "the virtual stretched surface L1 has no level difference with respect to the backrest part 7" means, for example, that the size of the level difference between the virtual stretched surface L1 and the backrest part 7 is within 10 mm. The definition also includes cases where the angular difference between the inclination angle of the virtual stretching surface L1 and the inclination angle of the upper part of the backrest portion 7 is within 10 degrees.

FIG. 13 is a schematic cross-sectional view showing a bather taking a bath in a bathtub device according to an embodiment of the present invention. FIG. 14 is a schematic cross-sectional view showing a bather taking a bath in a bathtub device that is a comparative example of the present invention.
As shown in FIG. 14, in the comparative example, the virtual extending surface L2, which is the downwardly inclined surface P of the pillow section 8 extending virtually downward, is not connected to the backrest section 7 without any step. The upper body of the bather in the bathing position is not located at the location intended by the designer. In other words, when a bather in a bathing posture relaxes in order to relax, his or her back (body axis) will be positioned along the virtual stretching plane L2, so the bather bathes with his or her upper body leaning backwards. I end up having to do it. As a result, the back of the bather moves away from the backrest 7, and the hot water discharged from the spout 4 hits different positions depending on the position of the bather's head and body. Note that the arrows shown in FIG. 14 represent hot water discharged from the spout portion 4. In the comparative example shown in FIG. 14, most of the hot water discharged from the spout 4 flows onto the back side (rear side) of the bather who is in the bathing position, and the chest side ( This means that not much hot water will flow to the front side). From this, in the comparative example, it is difficult to warm the entire upper body that is not immersed in the hot water in the bathtub 2.

On the other hand, in the bathtub device 3 according to the embodiment of the present invention, as shown in FIG. They are connected without any steps. Therefore, even when a bather in a bathing posture relaxes to relax, his or her back will naturally fit into the backrest portion 7. As a result, the hot water discharged from the spout 4 tends to spread to both the front and rear sides of the bather. In addition, the arrow shown in FIG. 13 represents the hot water discharged from the water spout part 4.

Further, as shown in FIG. 3, the backrest portion 7 is formed to have a concave curved surface S in a vertical cross section perpendicular to the backrest portion 7. That is, the backrest portion 7 has a concave curved surface S that partially curves backward in the height direction. This makes it easier for the bather's curved spine to come into contact with the bather not in a dotted manner but in a planar manner, making it possible for the bather to feel less pain when his or her back rests against the backrest portion 7. Therefore, it is possible to prevent the bather from consciously moving his or her back away from the backrest portion 7 and deviating from the desired bathing posture.

In addition, as shown in FIG. 2, the backrest portion 7 has a concave shape so that the center portion in the width direction is located outside the bathtub 2 and both end portions in the width direction are located inside the bathtub 2 in a horizontal cross section. It is formed to exhibit a curved surface M. In other words, the backrest portion 7 has a concave curved surface M that is curved such that the center portion in the width direction is located rearward than the left and right end portions. Thereby, the back of the bather can be fitted better to the backrest portion 7. Thereby, the bathing posture of the bather can be defined as a more desired posture.

The embodiments of the present invention have been described above. However, the invention is not limited to these descriptions. Appropriate design changes made by those skilled in the art with respect to the above-described embodiments are also included within the scope of the present invention as long as they have the characteristics of the present invention. For example, the shape, size, material, arrangement, etc. of each element included in the bathtub device 3, bathtub water discharging device 1, etc. are not limited to those illustrated, and can be changed as appropriate.
Furthermore, the elements of each of the embodiments described above can be combined to the extent technically possible, and combinations of these are also included within the scope of the present invention as long as they include the features of the present invention.

1 Bathtub water discharging device (bathtub water circulation type water discharging device)
2 Bathtub 3 Bathtub device 4 Spout part (spout)
5 Water discharge part 7 Backrest part 8 Pillow part 9 Detection part 10 Water supply part 36 Storage chamber 38 Throttle channel 38c Center part 38d Left and right end parts 42 Inclined part 42a Upstream end 42b Downstream end

Claims (3)

A bathtub having a backrest portion on which a bather in a bathing position can rest his or her back, and a rim portion disposed above the backrest portion;
a pillow part arranged above the rim part and formed separately from the bathtub, on which a bather in a bathing position can rest his or her head;
a wide spout of a shoulder bath spouting device disposed between the rim portion and the pillow portion and spouting a wide water stream toward the shoulders of a bather in a bathing posture ;
When viewed from above, the backrest portion of the bathtub is curved in a concave shape,
When viewed from above, the front part of the spout in the water spouting direction is covered above by the pillow part,
When viewed from above, the front end of the pillow portion that covers the upper part of the front of the water spout in the water spouting direction is curved in a concave shape,
In a top view, the front end of the pillow part that covers the spout and the upper part in front of the spout and is curved in a concave shape is located behind the front end of the rim part,
In the height direction, the length from the water spout to the front end of the pillow portion, which is curved in a concave shape and covers the upper part in front of the water spout, is shorter than the length from the water spout to the rim portion. A bathtub device characterized by: When viewed from above, a front end portion of the shoulder bath spouting device covered by the pillow portion is curved in a concave shape together with the backrest portion of the bathtub and the front end of the pillow portion . The bathtub device described in . The bathtub device according to claim 2 , wherein the front end of the spout of the shoulder bath spouting device is curved in a concave shape when viewed from above.