JP2007209562A - Bathtub apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bathtub apparatus which gives a massage with continuous jetting of bathing water from a plurality of nozzles by using a single circulating pump. <P>SOLUTION: The bathtub apparatus is equipped with a soles nozzle 2 for jetting bathing water toward heals from toes of a bathing person by swinging the bathing water, a calves nozzle 3 jetting bathing water toward calves of the bathing person, and a back nozzle 4 for jetting bathing water toward the back of the bathing person, supplies the bathing water by distributing the bathing water from the single circulating pump 5 to flow passages of the nozzle 2, the nozzle 3, and the nozzle 4 by a first valve 9, and supplies the bathing water by distributing bathing water, supplied to the flow passages of the nozzle 2 and the nozzle 3, to the flow passages of the soles nozzle and the calves nozzle by a second valve 13. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a bathtub apparatus capable of lymphatic massage.

Lymph fluid (interstitial fluid) oozes out from the blood into cells, supplies oxygen, nutrients, water, etc. to the cells, and takes in excess water and waste products from the cells and enters the lymph vessels. These lymphatic vessels gradually become thicker while joining several lymph nodes that are present in many joints. Finally, the lymphatic vessels are taken into veins and water and waste products are discharged out of the body as urine. It has been conventionally known that swelling and rough skin occur when the lymph flow is delayed. In order to promote such lymphatic flow, movement from the tip of the limb toward the heart is effective.

Then, what is indicated by patent documents 1-3 is proposed as a bathtub device which gave directionality to the flow of bath water.
The bathtub apparatus disclosed in Patent Document 1 includes a plurality of nozzles extending in the front-rear direction of the bathtub bottom surface, and forms a flow from the tip of the limb to the heart by making the ejection direction of the plurality of nozzles oblique. Like that.

  The bathtub apparatus disclosed in Patent Document 2 is provided with a plurality of bubble ejection nozzles in the front-rear direction of the bottom surface of the bathtub, and the simulation from the toes toward the heart is performed by shifting the ejection timing of the plurality of bubble ejection nozzles. A general flow.

  In the bathtub apparatus disclosed in Patent Document 3, particularly as another embodiment of FIG. 11, a bath water jet nozzle for the lower body and a bath water jet nozzle for the upper body are provided in the bathtub. Bath water is supplied from one pump, and bath water is supplied from a second pump to a bath water jet nozzle for the upper body. Further, Patent Document 3 discloses a structure of an ejection nozzle in which two flow paths are merged and the flow direction from the nozzle is continuously changed (swinged) by controlling the amount of inflow from each flow path. Has been proposed.

JP 2005-342491 A JP 2005-318950 A JP 2005-342507 A

  The bathtub devices disclosed in Patent Documents 1 to 3 are intended for lymphatic massage, but have the following problems.

  In the bathtub device disclosed in Patent Document 1, the direction of the bath water ejected from the nozzle is oblique, but does not swing, so that the sense of raising with water is poor and the lymph massage effect cannot be enhanced.

  In the bathtub device disclosed in Patent Document 2, it is possible to feel a flow from the toes to the heart in a pseudo manner by switching the valves. However, it is only a single change of ejection, and it is not possible to create a continuous motion that strokes from the tip of the limb toward the heart to promote lymph flow, and the lymph massage effect cannot be enhanced.

  In the bathtub apparatus disclosed in Patent Document 3, since two circulation pumps are used, when switching from a lower body bath water injection nozzle to an upper body bath water injection nozzle in order to perform lymphatic massage of the whole body, One pump is turned off and the other pump is turned on. At this time, the continuity of the massage tends to be impaired due to the rising performance and stopping performance of the pump. In order to solve this problem, it may be possible to overlap the off of one pump and the on of the other pump. However, this is not preferable because a large electric power is required instantaneously.

  In addition, the use of two circulation pumps is not preferable from the viewpoint of noise and vibration as well as an increase in size and cost of the bathtub apparatus as a whole.

  In order to solve the above problems, a bathtub apparatus of the present invention is a bathtub apparatus including a bathtub and a nozzle that is disposed in the longitudinal direction of the bathtub and ejects bath water. A sole nozzle that can be ejected while swinging the bath water from the front toward the heel, a calf nozzle that ejects the bath water toward the bather's calf, and a bath water that spouts toward the back of the bather A single circulation pump having a back nozzle and circulating bath water; a flow path for the bath water from the single circulation pump to the sole nozzle and the calf nozzle; and the back nozzle A first valve that is distributed and supplied to the flow path to the flow path, and bath water supplied to the flow path to the foot nozzle and the calf nozzle via the first valve A second valve that distributes and supplies the flow path to the nozzle and the flow path to the calf nozzle It is characterized by a door.

With such a structure, the sole for stagnation of the lymph fluid by the sole nozzle that can be spouted while swinging is used to focus the heel from the toes to the heel, and then the calf is stimulated with the calf nozzle. A series of operations of stimulating the back with the back nozzle can be realized with a single pump. Thereby, the space saving of the whole bathtub apparatus and a cost reduction are implement | achieved, and noise and vibration can also be suppressed to the minimum simultaneously. Furthermore, the lack of continuity of a series of operations in the whole body mode due to on / off of the pump, which is unavoidable with the two pump configurations, can be eliminated, and a system with a high massage effect that does not feel uncomfortable for the user can be constructed.

  In addition, the said bather refers to the virtual user who has an average physique, and the said bath water may contain the bubble. The form of the circulation pump is also arbitrary.

  The second valve and the sole nozzle may be connected by two flow paths that merge in the nozzle, and the amount of bath water fed to each flow path is controlled. Thus, the swing motion can be easily realized.

Further, a rotary valve may be employed as the second valve for controlling the amount of bath water fed into the two flow paths, and the rotary valve may gradually increase or decrease the ejection amount. It can be easily realized by the pivoting operation, and injection while continuously swinging can be easily realized. In addition, it is possible to easily realize the continuity of a series of ejection orders of the toes, soles, heels and calves, which is important as a lymphatic massage.

Further, the back nozzle may be configured to be able to squirt while bathing the water from the bather's waist toward the back. Thereby, it becomes possible to stroke the back from the waist, and the lymph massage effect becomes more effective.

Moreover, you may employ | adopt a rotary type valve as a 1st valve, by this, the transition from the nozzle for calves to the nozzle for backs becomes smoother, and the continuity of the ejection order can be ensured easily. Furthermore, the swing movement of the back nozzle can be easily realized.

In addition, by setting the water supply time to each pipe forming the flow path to each nozzle to 4 to 40 seconds, a system that provides a sufficient lymphatic massage effect and does not get tired of the user can be realized.

  According to the bathtub device of the present invention, the foot is liable to concentrate on the sole where the lymph fluid is likely to stagnate by the sole nozzle that can be ejected while swinging, and then the calf is stimulated with the calf nozzle, A series of operations of stimulating the back with the back nozzle can be realized with a single pump. Thereby, the space saving of the whole bathtub apparatus and a cost reduction are implement | achieved, and noise and vibration can also be suppressed to the minimum simultaneously. Furthermore, the lack of continuity of a series of operations in the whole body mode due to on / off of the pump, which is unavoidable with the two pump configurations, can be eliminated, and a system with a high massage effect that does not feel uncomfortable for the user can be constructed.

  Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. FIG. 1A is a side view of a bathtub apparatus according to the present invention, FIG. 1B is a plan view, FIG. 2 is a schematic diagram showing the relationship of main components of the bathtub apparatus according to the present invention, and FIGS. (E) is a cross-sectional view of each position of the first valve, FIG. 3 (f) is a side view of the first valve, and FIGS. 4 (a) to 4 (c) are cross sections of each position of the second valve. Fig. 4 (d) is a side view of the second valve, and Fig. 5 is a cross-sectional view of the sole nozzle.

  A pair of foot nozzles 2 are arranged on the left and right where the user's feet of the bathtub 1 are located, and a pair of calf nozzles 3 are arranged on the left and right where the user's calves of the bathtub 1 are located. In addition, one back nozzle 4 is disposed at a position where the back (waist) of the user of the bathtub 1 is located. Here, the location is the most effective position for massage in the vicinity of the user's soles, calves and back when assuming that the average physique user has entered the bathtub. Point to.

  In FIG. 1, the sole nozzle 2 is provided on one wall surface on the short side of the bathtub, the calf nozzle 3 is provided on the bottom surface of the bathtub, and the back nozzle 4 is provided on the other wall surface on the short side of the bathtub. ing. In addition, as a position where each nozzle is arrange | positioned, it is not limited to the position shown in FIG. 1, For example, the nozzle 3 for calves may be provided in the wall surface of the bathtub long side. Further, the back nozzle may be provided so as to aim at the back or near the waist.

The bathtub 1 is provided with a single circulation pump 5. The circulation pump 5 sucks bath water from a suction port 6 formed in the bathtub 1 through a pipe 7 and discharges the sucked bath water through a pipe 8.
The bath water referred to in the present invention includes bubble bath water.

  A first valve 9 is disposed in the middle of the pipe 8. In this embodiment, a rotary four-way valve is used as the first valve 9. The first valve 9 has a valve body 91 that is rotated by a motor 92, and the communication state of the flow path is changed depending on the state of the valve body 91. One flow path 9a of the four-way valve is connected to the pipe 8, and the other flow path 9b is connected to the pipe 10 for supplying bath water to the foot nozzle 2 and the calf nozzle 3. The remaining flow paths 9c, 9d is connected to pipes 12 and 11 for supplying bath water to the nozzle 4 for the back.

  A second valve 13 is disposed in the middle of the pipe 10. In this embodiment, a rotary four-way valve is used as the second valve 13. The second valve 13 has a valve body 131 that is rotated by a motor 132, and changes the communication state of the flow path according to the state of the valve body 131. One flow path 13a of the four-way valve is connected to the pipe 10, the flow paths 13b and 13c are connected to pipes 15 and 16 for supplying bath water to the sole nozzle 2, and the remaining flow path 13d is a calf nozzle. 3 is connected to a pipe 14 for supplying bath water.

  The pipe 14 is further branched in the middle and connected to the left and right calf nozzles 3, and the pipes 15 and 16 are branched in the middle and connected to the left and right foot nozzles 2.

  The foot nozzle 2 has a structure in which the nozzle itself is fixed, but the sprayed bath water swings. Specifically, as shown in FIG. 5, the foot nozzle 2 is formed with a flow path 2a connected to the pipe 15 and a flow path 2b connected to the pipe 16, and the flow path 2a and the flow path 2b are nozzles. Have joined together.

  Thus, if the bath water from the pipe 15 is larger than the bath water from the pipe 16, the bath water is ejected downward in the figure, and the bath water from the pipe 16 is larger than the bath water from the pipe 15. In FIG. In addition, when the bath water from the pipe 16 and the bath water from the pipe 15 are substantially equal, the water is ejected in the middle direction (right direction on the paper). By controlling the flow rate of the bath water from the pipes 15 and 16 in this way, the bath water ejected from the foot nozzle 2 can swing. That is, the swing motion can be easily realized by changing the flow rate distribution to the pipes 15 and 16 in the second valve 13. Further, in this embodiment, the back nozzle 4 has the same structure as the sole nozzle 2, and the ejection direction of the bath water can swing up and down.

  Operation | movement of the bathtub apparatus which consists of the above structure is demonstrated. The bathtub apparatus of the present invention is a whole body mode in which bath water is continuously ejected from the foot nozzle 2, the calf nozzle 3, and the back nozzle 4 in sequence, and the foot nozzle 2 and calf nozzle 3 continuously. The lower body mode in which the bath water is ejected in turn and the upper body mode in which the bath water is ejected from the back nozzle 4 are provided.

  First, the whole body mode will be described. In this embodiment, the rotary type four-way valve described above is used as the first valve 9 and the second valve 13, respectively. FIG. 6 is a time chart of the whole body mode, and FIG. It is the schematic which showed the ejection state. Note that the arrows in the diagram in the time chart schematically represent the positions of the valves described later.

The first valve 9 is set in five positions as shown in FIG. 3, and the second valve 13 is set in three positions as shown in FIG. 4 so as not to overlap in the rotation direction of the valve body. Each position can be obtained by rotating the valve bodies 91 and 131. For example, in the first valve 9, the flow path 9a is connected only to the flow path 9b at three positions. In the middle of the rotation between the positions, a communication state is formed across the two water discharge side flow paths. At this time, the water supply amount is set to two discharge side flows according to the communication state (opening state). Will be allocated to the road.

Here, the moving speeds between the positions are all set equal. That is, the ratio of the rotation period of the first valve 9 (the time required for one rotation) and the rotation period of the second valve is 5 to 3. The valve body 91 of the first valve 9 and the valve body 131 of the second valve 13 basically rotate clockwise on the paper surface.

First, upon receiving a command input for starting the whole body mode from the user, the first valve 9 is set to the position (a) in FIG. 3, and the second valve 13 is set to the position (a) in FIG. The state of the valve 9 and the second valve 13 is called the initial position A). After confirming that the valves are in their respective positions (initial position A), the circulation pump 5 is turned on and the ejection of bath water is started.
In this state, as shown in FIG. 7A, bath water is jetted toward the bather's feet through the pipe 15 and the flow path 2 a of the right and left foot nozzles 2.

  Thereafter, after a lapse of a predetermined time when the water supply of the circulation pump 5 is stabilized, the first valve 9 and the second valve 13 are started to rotate. The first valve 9 is set to the position (b) in FIG. 3, and the second valve 13 is rotated to the position (b) in FIG. Then, the ejection of the bath water toward the foot from the pipe 15 is gradually weakened, and the ejection of the bath water toward the heel from the pipe 16 is gradually strengthened. As shown in FIG. As shown in FIG. 7C, the bath water is ejected from the left and right foot nozzles 2 to the soles through the pipes 16 and baths from the left and right foot nozzles 2 through the pipes 16, respectively. Water is spouted toward the reed.

  As a result, the direction of the bath water ejected from the right and left sole nozzles 2 can swing so as to continuously move from the foot of the bather to the heel through the arch. Thereby, the operation of stroking the sole can be realized.

  Next, the first valve 9 is rotated to the position (c) in FIG. 3, and the second valve 13 is rotated to the position (c) in FIG. Then, the ejection of the bath water for the heel gradually weakens and the ejection of the bath water for the calf gradually increases, and during this time, as shown in FIG. 7 (d), the right and left foot nozzles 2 (channel 2b) ) And the swollen nozzle 3, and then, as shown in FIG. 7 (e), the bath water is spouted toward the calf only from the right and left calf nozzles 3.

  Next, the first valve 9 is rotated to the position (d) in FIG. 3, and the second valve 13 is stopped while maintaining the position (c) in FIG. Then, the jet of bath water toward the calf is gradually weakened and the jet of bath water toward the waist is gradually strengthened, and as shown in FIG. 7 (f), the bath is fed from both the calf nozzle 3 and the back nozzle 4. As shown in FIG. 7G, after the water is ejected, the water is ejected from the back nozzle 4 toward the waist via the pipe 12 alone.

  Thereafter, when the first valve 9 is rotated from the position (d) to the position (e) in FIG. 3, the jet of the bath water toward the waist from the pipe 12 gradually weakens, and the bath water toward the back from the pipe 11. As shown in FIG. 7 (i), the jet of water gradually becomes stronger, and as shown in FIG. In addition, it is in a state of being ejected from the back nozzle 4 toward the back only through the pipe 11. As a result, the bath water from the back nozzle 4 also swings from below to above. At this time, the second valve 13 is rotated from the position (c) in FIG. 4 to the position (a).

  As a result, the direction of the bath water ejected from the back nozzle 4 can perform a swing movement that continuously moves from the bather's waist to the back (for example, between the shoulder blades). Thereby, the operation of stroking the back from the waist can be realized.

  Thereafter, the first valve 9 is rotated to the position (a) in FIG. During this time, the spray of bath water toward the back gradually weakens and the spray of bath water toward the feet from the pipe 15 gradually increases, and as shown in FIG. The bath water is ejected weakly from the nozzle 4, and the bath water is ejected weakly from the foot nozzle through the pipe 15, and bath water for the feet from the pipe 15 is ejected as shown in FIG. Return to state. At this time, the second valve 13 is stopped while maintaining the position (a) in FIG.

The above operation is repeated as one cycle, and after receiving a stop command input from the user or after a predetermined time has elapsed, the pump is turned off and the whole body mode ends. At this time, an operation of returning to the initial position A may be performed.

With the whole body mode that performs this operation, the whole body of the bather is lifted up with a single pump, starting from the tip of the foot, in the foot, heel, calf, waist, back, in order and continuously with water flow It can be stimulated while always massaging the whole body from the toes to the heart, promoting the flow of lymph, and effectively exerting effects such as swelling. At this time, since the ejection transition between the nozzles is smoothly performed by the rotation operation of the first valve 9 and the second valve 13, a system having a high massage effect without any sense of incongruity for the user can be realized.

  FIG. 8 is a time chart of the lower body mode. Basically, the upper body mode is omitted from the whole body mode, and the first valve 9 is fixed at the position (a) of FIG. When the valve 13 is rotated, the steps of performing steps (a) to (e) in FIG. 7 and returning to (a) are repeated. The first valve 9 may be fixed at the position (b) or (c) in FIG.

  With the lower body mode that performs such operations, a single pump starts and starts the foot, and applies a water flow to the sole, heel, calf, and the lower body where swelling is likely to occur in order and continuously. Can always massage the lower body from the toes toward the heart, promote the flow of lymph, and effectively exert effects such as swelling.

  FIG. 9 is a time chart of the upper body mode. Basically, the lower body mode is omitted from the whole body mode, and the second valve 13 is fixed at the position (a) of FIG. As the valve 9 reciprocates between positions (d) and (e) in FIG. 3 (repetitive operations such as clockwise from positions (d) to (e) and counterclockwise from (e) to (d)). 7 (g) (h) (i) (h) (g) are repeated. The second valve 13 may be fixed at the position (b) or (c) in FIG.

  With the upper body mode that performs this action, a single pump can continuously apply water flow to the massage point centered on the crucible around the spine from the waist to the back. The massage can be massaged and the effect of eliminating the stiffness can be efficiently exhibited.

  As described above, according to the present invention, each of the whole body mode, the lower body mode, and the upper body mode can be realized with a single pump, and the water flow is continuously applied to the body in each mode. It is possible to achieve a more effective massage effect such as lymphatic massage and stiffness elimination.

  Also, depending on the user's condition and preferences, the whole body mode that lifts up the whole body, the lower body mode that emphasizes the swelling of the lower body, and the upper body mode that eliminates the stiffness of the upper body can be used properly. A more preferable system is realized with a single pump.

  Thus, in order to continuously eject water flow sequentially with a single pump, it is necessary to move the two valves (first valve 9 and second valve 13) in conjunction with each other as described above. Specifically, when the first valve 9 is opened to the second valve 13 side (from the position (a) in FIG. 3 to the position (c)), a series of operations of the second valve 13 (at least in FIG. 4 (a) position to (c) position). In order to ensure this interlocking operation, control is performed to check the positions of the first valve 9 and the second valve 13, specifically the positions of the valve body 91 and the valve body 131 in the operating state in each mode. May be. For example, in the whole body mode, the initial position A is regularly visited. Therefore, the malfunction can be prevented by periodically checking this position. Similarly, when the apparatus is temporarily suspended and restarted, the initial position of each mode (for example, the initial position A in the whole body mode) is confirmed, and then the circulation pump 5 is turned on to prevent malfunction. The start of each mode can be made from a predetermined ejection position (in the whole body mode and the lower body mode, the ejection toward the foot from the pipe 15, and in the upper body mode, the ejection toward the waist from the pipe 12). As a result, the massage always goes from the toes toward the heart.

  Further, it is desirable to set the water supply time from the circulation pump 5 to each pipe through the first valve 9 and the second valve 13 from 4 seconds to 40 seconds. In this embodiment, the water supply time to each pipe is, for example, the water supply time to the pipe 14 when the first valve 9 is open on the flow path 9b side and the second valve 13 is on the flow path 13d side. It is an open time, and is approximately the time from the position (b) to the position (a) in FIG. This time determines the time of the bath water ejection from each ejection nozzle, that is, the massage time. For example, in the case of the foot sole nozzle 2 to be swung, the ejection time is determined taking into account the water feeding time for two pipes 15 and 16, so it is slightly longer than the water feeding time and is approximately 3/2 times the water feeding time. It is. On the other hand, in the case of the calf nozzle 3, since the ejection time is determined only by the pipe 14, it is equal to the water feeding time. If the water supply time to each pipe is 4 seconds or more, the effect of lymphatic massage that is raised by water flow is sufficiently obtained, and if it is 40 seconds or less, the user can use it without getting bored during use. .

  Further, the operation time at each part may be set according to the user's preference, and in this case, it can be dealt with by controlling to change the speed and rotation time of the valve body according to the set time. .

Next, a second embodiment using an electromagnetic valve as the first valve will be described.
10, 11 and 12 are time charts of the whole body mode, the lower body mode and the upper body mode when an electromagnetic valve is used as the first valve. The basic pattern is the same as that when the rotary valve is used, and the whole body mode, the lower body mode, and the upper body mode are realized by the interlocking operation of the first valve 9 and the second valve 13 with a single pump. . When an electromagnetic valve is used, the on / off switching is digital, so that the bath water is ejected and stopped instantaneously. Thereby, the jetting transition from the calf nozzle 3 to the back nozzle 4 and the jetting transition from the back nozzle 4 to the foot nozzle are clarified, and the start and end of the heel are clear and the directionality is clear. In addition, by using the back nozzle 4 on / off, the effect of pushing the pot is enhanced, which is effective in eliminating the sticking.

  Also in the second embodiment, as in the first embodiment, check control of the position of the valve body of each valve, setting of the water supply time, various settings according to the user's preference, etc. can be performed. Good.

  The configuration having two valves in a single pump has been described above. However, for example, a third valve 21 may be provided between the first valve 9 and the back nozzle 4. If the valve 21 is a rotary type, the back nozzle 4 can swing easily as described above. Furthermore, as shown in FIG. 13, if the lower neck nozzle 22 or the like is arranged at the rear stage of the third valve 21, as in the order relationship between the sole nozzle 2 and the calf nozzle 3, the waist, the back, the lower neck Can be performed in order. At this time, as the whole body mode, it is possible to continuously massage a wide range from the toes to the neck.

As mentioned above, although the Example of this invention was described, even if those skilled in the art added the design change about any element which comprises the bathtub apparatus of this invention, if it was provided with the summary of this invention Are included within the scope of the present invention.
For example, even if the person skilled in the art has appropriately changed the position and size of each bath water spray nozzle, and detailed movements such as the speed and stop timing of each valve, the gist of the present invention is included Are included within the scope of the present invention.

(A) is a side view of the bathtub apparatus which concerns on this invention, (b) is a top view. It is the schematic which showed the relationship of the main structural member of the bathtub apparatus which concerns on this invention. (A)-(e) is sectional drawing in each position of a 1st valve, (f) is a side view of a 1st valve. (A)-(c) is sectional drawing in each position of a 2nd valve, (d) is a side view of a 2nd valve. It is sectional drawing of the nozzle for soles. It is a time chart of whole body mode at the time of using a rotary type valve as the 1st valve. It is the schematic which showed the relationship of the main structural member in whole body mode. It is a time chart of the lower body mode at the time of using a rotary type valve as a 1st valve. It is a time chart of the lower body mode at the time of using a rotary type valve as a 1st valve. It is a time chart of the whole body mode at the time of using an electromagnetic valve as a 1st valve. It is a time chart of the lower body mode at the time of using an electromagnetic valve as a 1st valve. It is a time chart of the upper body mode at the time of using an electromagnetic valve as a 1st valve. It is the schematic which showed the relationship of the main structural member of the bathtub apparatus at the time of using a 3rd valve.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Bathtub, 2 ... Foot nozzle, 2a, 2b ... Flow path, 3 ... Swelling nozzle, 4 ... Back nozzle, 5 ... Circulation pump, 6 ... Suction port, 7, 8, 10, 11, 12, 14, 15, 16, 20, 23 ... piping, 9 ... first valve, 9a, 9b, 9c, 9d ... flow path, 13 ... second valve, 13a, 13b, 13c, 13d ... flow path, 21 ... 3rd valve, 22 ... Neck for lower neck, 91, 131 ... Valve body, 92, 132 ... Motor.

Claims (6)

A bathtub apparatus comprising a bathtub and a plurality of nozzles arranged in the longitudinal direction of the bathtub for ejecting bath water, wherein the nozzle can be ejected while swinging the bath water from the bather's feet toward the heel The sole has a sole nozzle, a calf nozzle that ejects bath water toward the bather's calf, and a back nozzle that ejects bath water toward the bather's back. A first circulation pump, and a bath water from the single circulation pump is distributed and supplied to the sole nozzle and the flow path to the calf nozzle and the flow path to the back nozzle. A valve and a bath water supplied to the sole nozzle and the calf nozzle through the first valve, and the channel to the sole nozzle and the calf nozzle And a second valve that is distributed and supplied to the bathtub device. The bathtub apparatus according to claim 1, wherein the second valve and the sole nozzle are connected by two flow paths that merge in the sole nozzle. The bathtub apparatus according to claim 1, wherein the second valve is a rotary type. The bathtub apparatus according to any one of claims 1 to 3, wherein the back nozzle is configured to be ejected while swinging bath water from the waist of the bather toward the back. The bathtub apparatus according to any one of claims 1 to 4, wherein the first valve is a rotary type. The bathtub apparatus according to any one of claims 1 to 6, wherein a water supply time to each pipe forming a flow path to each nozzle is 4 to 40 seconds.