JP4888826B2 - Bathtub equipment - Google Patents

Description

  The present invention relates to a bathtub apparatus having both a sensory receptor related to balance sensation and a special function for restoring the function of the nervous system by giving stimulation to the sole by a special pattern of jet.

  2. Description of the Related Art A bathtub device that massages the sole of a foot using a jet of hot water in the bathtub during bathing in the bathtub is conventionally known. As an example of such a bathtub device, for example, a bathtub device described in Patent Literature 1 is disclosed.

The bathtub device described in Patent Document 1 generates a jet by circulating hot water in the bathtub. Moreover, the footrest part which a bather can put a foot on is inclined and provided in the one side part of the bathtub. The footrest is provided with a foot outlet for ejecting a jet toward the sole. As a result, the bather is massaged by stimulating the soles with a jet in a natural posture without forcibly bending the ankle.
Japanese Patent Laying-Open No. 2005-287541 (page 4, FIG. 1)

  However, in recent years, there has been a demand for a solution to a problem that can be solved by the bathtub device described in Patent Document 1 described above, that is, a problem that is different from the problem of giving the bather a relaxing effect by massaging the soles of the bather during bathing. Yes. This new issue is due to the fact that in recent years, the number of elderly people who have fallen due to falls and become bedridden or need nursing care has become a social issue, with the aim of improving the elderly's sense of balance and walking ability. It is a challenge to reduce such social problems.

  As seen in FIG. 31, as a factor for reducing the balance sense and walking ability of such elderly people, physical strength generally decreases with aging, but in particular, the balance ability is drastically reduced. Can be mentioned. The reason for this is thought to be a decrease in muscle mass and a corresponding decrease in muscle strength, but it is thought that this is mainly due to a decrease in function of sensory receptors and neural circuits connected to these muscles.

  And if the balance ability is lost, there is an increased risk of falling or falling asleep due to falling, so it is important to restore the balance ability. In recent years, strength training using training equipment installed in fitness clubs and the like has been actively carried out to prevent falls, but this strength training alone can help to build strength and sense the balance ability It is difficult to achieve a fundamental solution to the problem by activating receptors and the nervous system to achieve functional recovery.

  An object of the present invention is to provide a bathtub device that has a function to restore a sensory receptor related to balance sensation and a function of the nervous system by giving stimulation to a sole by a jet of a special pattern.

In order to solve the above-described problems, the bathtub device according to the present invention is
Ejection and the right foot spout having a bather right foot corresponding to the jetting nozzle for right before a jet nozzle and right back to eject jets around the back of the corresponding to jet around the left back of the bather a left foot spout having a left front for ejecting nozzles and ejection nozzles for left behind that, the a bathtub apparatus comprising a bath inner wall,
The right foot jets, the jet timing of the jet, as the magnitude relationship of the right foot back before and after undergoing stimulated by jet ejected from the right front for ejecting nozzles and ejection nozzles for the right foot behind changes alternately is switched back and forth,
The left foot spout is configured to switch the jetting timing of the jets back and forth so that the magnitude relationship of the stimulation received by the front and back of the left foot is alternately changed by the jets ejected from the left front foot jet nozzle and the left foot back jet nozzle,
The timing of front / rear switching at the right foot spout is different from the timing of front / rear switching at the left foot spout .

By using such a bathtub device, it is possible to stimulate the sole of the foot with a jet flow in which the stimulation to the front, rear, left and right of the bather's sole alternately changes. That is, the difference in stimulation between the front, back, left , and right of the foot sole acts alternately before and after the sole. As a result, combined with the sensitivity of the nerves due to the thermal effect during bathing, it is possible to restore the sensory receptors related to the sense of balance and the functional recovery of the nervous system leading thereto.

That is, by alternately stimulating the front, back, left , and right of the sole, it is possible to apply the stimulus to the sole as a pseudo load. This is because even when lying down like a bathing posture, it is possible to convey a pseudo load that causes the illusion of standing on the sole of the foot by vibration. I expect that. In addition, since the switching between the magnitude of the stimulus alternately to the left and right front and rear, the foot of the pressure distribution of when you are standing, for example, when strong left front or right front side, recognizes that attitude is inclined to the front, on the contrary, When the stimulus on the left rear side or the right rear side is strong, it is recognized that the posture is tilted backward, so we expect that the posture change will be illusioned by switching the magnitude relationship between the front and rear and left and right stimuli with a pseudo load. it can. By giving such a pseudo load pattern, the recognition ability of the pressure distribution received on the sole is improved, and the recognition ability of the sensory receptor on the sole necessary for the sense of balance is enhanced. Furthermore, by switching the front and back stimulation from the sole and making the illusion of a change in posture, it is possible to promote information transmission to the neural circuit that recognizes the posture, and to enhance the facilitating property of the neural circuit.

In addition, since buoyancy always acts on bathers in the bathtub, block extra input due to gravity, etc. to each sensory receptor, and concentrate the nervous system only on the difference in stimulation that the front, back, left and right alternately receive Therefore, it is possible to enhance the facilitation of the neural circuit related to the sense of balance by giving such a stimulus to the sole.

Also, since buoyancy always acts on the bather during bathing, the bather can sensuously take a bathing posture, and only the stimulation from the difference in stimulation that the front, back, left and right alternately receive It is possible to cause an illusion in the sensory receptors and the nervous system related to the balance sensation as in the standing posture, thereby achieving functional recovery related to the sense of balance between the sensory receptors and the nervous system.

Moreover, the bathtub apparatus of Claim 2 of this invention is the bathtub apparatus of Claim 1 ,
Two rows of left and right are provided on the inner wall of the bathtub so as to correspond to the left and right feet of the bather, and jets are jetted from one of the left and right front jet nozzles to the front and back of the foot and at the same time the left and right rear Jetting a jet from one of the other jet nozzles to the back of the sole, and jetting a jet from the other of the left and right front jet nozzles to the front of the sole, simultaneously with the left and right rear jet nozzles. It is characterized in that jets are alternately ejected from either one to the rear side of the sole.

When walking training is performed, such a jet is jetted to the front, back, left , and right of the sole, so that the stimulation as if walking on the sole can be given, and the effect of performing the walking training is further increased.

Moreover, the bathtub apparatus of Claim 3 of this invention is the bathtub apparatus of Claim 1 ,
Two rows of left and right sides are provided on the inner wall of the bathtub so as to correspond to the left and right feet of the bather, and the front jet nozzle from the rear jet nozzle on either the left or right side of the jet port, Control is performed so that the magnitude relationship of the stimulation that the jet flow gives to the front and back of the foot is switched in the order from the rear jet nozzle on the left or right side of the jet outlet to the front jet nozzle.

  By switching the magnitude relationship of the stimulus applied to the back and front of the foot in this order for each left and right foot, a pressure distribution of a normal walking pattern, that is, a pseudo load related to walking can be positively applied to the foot, Increases the sensitivity of baroreceptors, which are important for walking, and facilitates neural circuits during bathing. That is, by making the central nervous system recognize a normal walking pattern, the tempo of walking is learned during bathing so that correct walking can be performed.

According to the present invention, it is possible to provide a bathtub apparatus having a function of restoring the function of sensory receptors and nervous system by giving stimulation by a special pattern jet to the sole, more specifically, according to the present invention. By using the bathtub device, the foot sole can be stimulated by a jet flow in which the stimulation to the front, rear, left and right of the bather's sole alternately changes in the bathtub. In other words, the difference in stimulation between the front, back, left and right of the sole alternately acts on the front, back, left and right . As a result, combined with the sensitivity of the nerves due to the thermal effect during bathing, it is possible to restore the sensory receptors related to the sense of balance and the functional recovery of the nervous system leading thereto. As a result, the actual load that an adult receives on the sole of the foot during walking can be applied to the sole of the elderly bather as a simulated load by the stimulation of warm water. It is possible to reinvigorate the nerve and the nerve transmission circuit leading to it as if it were an adult, and perform training to bring the actual walking pattern closer to the adult walking pattern. In addition, since buoyancy always acts on bathers in the bathtub, block extra input due to gravity, etc. to each sensory receptor, and concentrate the nervous system only on the difference in stimulation that the front, back, left and right alternately receive Therefore, it becomes possible to enhance the facilitation of the neural circuit related to the sense of balance.

  Also, since buoyancy always acts on the bather during bathing, the bather can sensuously take a bathing posture, and the standing posture is as if only the difference in stimulation received alternately between the front and back of the foot. As described above, it is possible to cause an illusion in the sensory receptors and the nervous system related to the balance sensation, thereby achieving functional recovery related to the sense of balance between the sensory receptors and the nervous system.

  Hereinafter, the bathtub apparatus concerning the 1st Embodiment of this invention is demonstrated. As shown in FIG. 1, the bathtub apparatus 1 according to the first embodiment of the present invention includes a bathtub 110 and a sole positioning part (see FIG. 2) 220 provided on the inner wall surface at one end of the bathtub 110 in the longitudinal direction. The jet nozzle 210 including front jet nozzles 211, 212 and rear jet nozzles 213, 214 provided corresponding to the front and back of the sole positioned by the sole positioning unit 220, and the inside of the bathtub via the pump 120 A circulation flow path 130 for circulating the hot water in the jet outlet 210, an electromagnetic valve 140 interposed between the pump 120 and the jet outlet 210 of the circulation flow path 130, and a control unit 150 for controlling the pump 120 and the electromagnetic valve 140. I have.

  And the sole positioning part 220 of the bathtub apparatus 1 consists of the protruding parts 221 and 222 of the curved ridge with the curvature substantially corresponding to the outline of a bather's heel, respectively, as shown in FIG. Are provided at predetermined intervals in the width direction on the inner wall of the bathtub above a predetermined distance.

  The jet outlet 210 is provided corresponding to each of the left and right sole positioning portions 220, the left jet outlet 210 includes the front jet nozzle 211 and the rear jet nozzle 213, and the right jet outlet 210 is the front. An ejection nozzle 212 and a rear ejection nozzle 214 are provided (see FIG. 2). The hot water ejected from the front ejection nozzles 211 and 212 and the warm water ejected from the rear ejection nozzles 213 and 214 are ejected corresponding to the front and back of the bather's sole positioned by the sole positioning unit 220, respectively. It has become. In addition, as shown in FIG. 3, the front of a sole here refers to the finger | toe of the sole, the base of the finger, and its vicinity area, and the back of the sole means the buttocks of the sole and its vicinity area. Point to. More specifically, it refers to each region that constitutes the pressure distribution during walking of a healthy adult on the front side and rear side of the sole.

  The pump 120 serves to circulate hot water in the bathtub while sending it out toward the jet outlet 210 via the circulation channel 130.

  The circulation channel 130 is connected to the common hot water channel 131 having one end connected to the bathtub and provided with a pump 120 in the middle of the circulation channel 130 and branches from the common hot water channel 131 to supply hot water to the left and right front ejection nozzles 211 and 212. The front hot water flow path 132 and the rear hot water flow path 133 for supplying hot water to the left and right rear ejection nozzles 213 and 214 are configured.

  The electromagnetic valve 140 includes a front electromagnetic valve 142 provided in the front hot water flow path 132 and a rear electromagnetic valve 143 provided in the rear hot water flow path. The front solenoid valve 142 is an open / close valve that opens and closes the front hot water flow path 132 under the control of the control unit 150, and supplies hot water supplied from the pump 120 to the front ejection nozzles 211 and 212 in an open state. Then, hot water with a large flow rate is directly ejected from the nozzle to the front side of the sole positioned at the sole positioning part, and in the closed state, the hot water supplied from the pump 120 is stopped and the hot water is ejected to the front side of the foot. It is supposed not to.

  The rear solenoid valve 143 is also an open / close valve that opens and closes the rear hot water flow path 133 under the control of the control unit 150, and supplies the hot water supplied from the pump 120 to the rear ejection nozzles 213 and 214 as they are opened. Then, hot water with a large flow rate is sprayed directly from the nozzle to the back side of the sole positioned at the sole positioning unit, and in the closed state, hot water supplied from the pump 120 is stopped and hot water is supplied to the back side of the sole. It is designed not to erupt.

  Further, the control unit 150 controls the driving of the pump 120, and the flow rate (strength) of hot water ejected from the front ejection nozzles 211 and 212 of the ejection port 210 and the hot water ejected from the rear ejection nozzles 213 and 214. The flow rate (strength) is switched alternately. Specifically, as shown in FIG. 4, the state of the front solenoid valve open and the back solenoid valve closed and the state of the front solenoid valve closed and the rear solenoid valve open are alternated every predetermined number of seconds. Repeatedly, hot water is alternately ejected from the front ejection nozzles 211 and 212 and the rear ejection nozzles 213 and 214 to the front and back of the sole, and the difference between the stimuli received by the front and back of the foot from these alternately ejected jets is calculated. It is designed to change alternately.

  Then, the actual usage method and effect | action of the bathtub apparatus 1 which has such a structure are demonstrated. First, the bather soaks in the hot water in the bathtub and places the sole on the sole positioning unit 220 (positions). At this time, the front ejection nozzles 211 and 212 of the ejection port 210 are made to coincide with the front side of the sole 210 by simply touching the sole positioning part 220 shown in FIG. 2 with the rear ejection nozzles 213 and 214. Can be matched to the back side of the sole.

  Next, the control unit 150 operates the pump 120 to supply hot water in the bathtub to the front hot water channel 132 and the rear hot water channel 133 via the common hot water channel 131.

  At the same time, the control unit 150 alternately opens and closes the front solenoid valve 142 and the rear solenoid valve 143 as shown in FIG. In the present embodiment, the front solenoid valve 142 and the rear solenoid valve 143 are opened and closed every 3 seconds, but are not necessarily limited to this time.

  By alternately opening and closing the front solenoid valve 142 and the rear solenoid valve 143 in this way, hot water is alternately ejected from the front ejection nozzles 211 and 212 and the rear ejection nozzles 213 and 214 every 3 seconds. As a result, the bather alternately receives a stimulus (see FIG. 3) from the hot water sprayed to the front side and the back side of the foot every 3 seconds.

  Due to the alternating stimulation of the warm water from the spout 210 to the front and back of the foot and the buoyancy that acts on the bather's whole body in the bathtub, the bather is subjected to a pseudo load as if standing in a bathing state. It can be received before and after the sole of the foot, and it is possible to perform a balance improvement exercise as described below despite being bathing.

  Subsequently, the reason why the applicant has obtained the knowledge that the balance feeling is improved by alternately receiving stimuli before and after the sole during bathing, which is a characteristic part of the present invention. As shown in FIG. 32, the balance ability takes external information through sensory organs (vestibular system, vision, somatosensory), integrates information in the central nervous circuit, and finally optimizes the body posture. Collectively refers to a series of functions that drive muscles to hold. Here, the functions of somatic sensations can be classified into two types: deep receptors and skin receptors. Here, the deep receptor detects movements of muscle tension such as muscle spindles and Golgi tendon organs and reacts to them to keep the muscle tension even. On the other hand, with regard to the skin receptor, a patina body for detecting the pressure of the sole is greatly related. Regarding the balance ability, it is known that the balance is maintained particularly by calculating the pressure difference of the sole that occurs when the body tilts forward and backward.

  Thus, the baroreceptor on the sole is greatly related to the balance ability. And it is said that elderly people become less sensitive to this baroreceptor, and it is difficult to recognize exactly what state their posture is.

  Next, the baroreceptor on the sole will be described in more detail. The sole baroreceptor is very sensitive in terms of balance ability. Specifically, as shown in FIG. 33, when a vibration stimulus is applied to the sole by four methods of the front part, the rear part, the right part, and the left foot, the baroreceptor responds to the vibration stimulus. When a vibration stimulus is applied only to the front part of the foot (the thumb ball), the sensory receptor has the illusion that the center of gravity is tilted to the front. In order to detect the inclination and to stabilize the posture, feedback is given so that the body falls down unconsciously later. Similarly, when a stimulus is applied to the rear, right foot, and left foot, a tilt is detected for each stimulus, and a reaction is shown in which negative feedback is given to the vibration stimulus.

  Further, when considering the center-of-gravity sway in a standing posture of a person, as shown in FIG. 34, one ankle joint fulcrum observed from the sagittal plane rather than the side sway of two fulcrums composed of both feet observed from the frontal plane The ankle joint is a uniaxial hinge joint, and it hardly moves to the side of the ankle joint due to its structure and mainly has the functions of dorsiflexion and plantar flexion. ing.

  Therefore, considering training for the purpose of functional recovery of sensory receptors associated with balance ability and activation of the nervous system, from the standing fulcrum and the characteristics of the ankle joint, FIG. 34 (a) and FIG. 34 (b) As shown in Fig. 3, when a stimulus that induces an activity in the longitudinal direction (front and back) observed from the sagittal plane is given, the fluctuation is increased, so that the effect of training is considered to be increased. In addition, the fact that the center of gravity moves much in the front-rear direction makes the center of gravity easy to collapse, and thus there is a high risk of falling, and the ability to recognize the pressure distribution in the front-rear direction is important.

  Therefore, in order to prevent falls and associated fractures in advance, pay attention to the pressure receptors on the soles of the feet, and alternately vary the difference in stimulation received from the jet before and after the soles during bathing to give a pressure distribution. Thus, the present applicant has thought that it is possible to maintain and improve the sense of balance by improving the function of the baroreceptor and enhancing the facilitation of the nervous system that conveys the response.

  Therefore, the present invention performs lymphatic massage by spraying warm water simultaneously before and after the sole of the foot, or by spraying warm water in one direction from the tip of the sole toward the heel, as in a conventional hot water spray massager in a bathtub. It is essentially different from what is achieved, the effect that these conventional bathtubs and hot water jet massagers do not have, that is, the state of stimulation alternately before and after the sole of the foot to the extent that the pressure distribution can be recognized in the front-rear direction By changing the function, a pseudo load equivalent to a standing position is alternately applied before and after the sole, enabling functional recovery of sensory receptors associated with balance ability and activation of neural circuits (feedback mechanism). Yes. Further, when the balance is lost, the pressure distribution of the sole changes instantaneously. However, the present invention can alternately switch the pressure distribution because the jet can be alternately applied. It is also possible to create a state in which the timing of front / rear switching is overlapped, and it is possible to reproduce a state in which pressure is simultaneously applied to the front and back of the foot for a moment when the balance moves back and forth. In this way, various controls such as overlap and instantaneous switching are possible by switching the front and rear jets, and balance training can be made more effective by reproducing a more realistic state.

  As is apparent from the above description, the bathtub device 1 according to the first embodiment of the present invention includes the sole positioning part 220 at a height slightly away from the bottom wall on the inner wall at one end in the longitudinal direction of the inner wall of the bathtub. And a jet outlet 210 having front jet nozzles 211 and 212 and rear jet nozzles 213 and 214 respectively corresponding to the front and rear sides of the sole positioned by the sole positioning unit 220, and the control unit 150 includes the pump 120 and the front The front solenoid valve 142 and the rear solenoid valve 143 are controlled in a predetermined pattern, and hot water is alternately ejected from the front ejection nozzles 211 and 212 and the rear ejection nozzles 213 and 214 to the front and back of the foot so Alternately, stimuli of different sizes can be applied, thereby improving the balance feeling of the bather.

  Especially for elderly people, for example, they may fall accidentally when riding a bus or when the road surface freezes, resulting in serious injury. ), It is possible to improve the balance sensation naturally without having the consciousness of performing the balance sensation training by carrying out such a balance sensation training together with daily bathing. The benefits are great because they can.

  In addition, the knee and ankle joints do not need to support weight during training, as in the case of balance training in a standing position. Sense improvement training can be performed every day without difficulty.

  In addition, as shown in FIG. 5, the sole positioning portion includes arc-shaped recess portions 231 and 232 having curvatures corresponding to the shape of the heel at positions where the left and right heels of the bather hit the rear nozzles 213 and 214. You may provide below. Since the sole positioning part 230 is formed of such recesses 231 and 232, the bather does not hit the toe positioning part 230 with the tip of the foot.

  Further, as shown in FIG. 6, the sole positioning portion 240 has a configuration in which the protrusion positioning portions 241 and 242 that abut against the toes of the bather's feet are provided above the front ejection nozzles 211 and 212 as shown in FIG. 6. Also good.

  Moreover, as shown in FIG. 7, the sole positioning part 250 of the form which provided the projection parts 251 and 252 in the position corresponding to the arch of a right and left foot may be sufficient. By providing such sole positioning part 250, the arch is pressed by the sole positioning part 250 simultaneously with the positioning of the sole, and in addition to improving balance sensation and walking ability, which are the main objects of the present invention, a massage effect Can be given to bathers.

  Further, as shown in FIG. 8, the foot side positioning protrusions 261 to 264 corresponding to the both sides of the left and right soles are connected to the front ejection nozzles 211 and 212 and the rear ejection nozzle 213 on the inner wall of the bathtub. , 214 may be used. By providing such sole side positioning projections 261 to 264, the position and orientation of the bather's sole can be positioned in an optimal state with respect to the jet outlet 210, and the front jet nozzles 211 and 212 are provided. Also, hot water can be ejected from the rear ejection nozzles 213 and 214 to appropriate places around the soles of the bathers.

  Moreover, as shown in FIG. 9, the sole positioning part 270 of the form made into the foot-shaped recessed part 271,272 corresponding to a bather's right and left sole shape may be sufficient as a sole positioning part. By forming the sole positioning part 270 with the dents 271 and 272 as described above, the bather does not inadvertently hit the toe positioning on the sole positioning part 270. In this case, instead of providing a recess on the inner wall of the bathtub, a seal corresponding to the foot shape of the bather may be applied to form the sole positioning portion.

  Moreover, as shown in FIG. 10, it is set as the shape of a bathtub provided with the step part 111 for lower limbs raising only a fixed height from a bather's buttocks only as for a lower limb part of a bather, and it mounts on this step part 111 for lower limbs placement. The jet outlet 210 including the front jet nozzles 211 and 212 and the rear jet nozzles 213 and 214 of the jet outlet 210 may be provided on the inner wall of the bathtub so as to correspond to the front and back of the sole of the foot.

  In this case, since the step portion 111 for placing the lower limb also serves as a sole positioning portion, the sole so that the sole touches the spout 210 just by placing the lower limb on the step portion 111 for placing the lower limb. Can be positioned. In addition, by providing such a lower limb loading step 111, the bather's lower limb is maintained without being overwhelmed, so that the posture is maintained in a standing position (standing posture). It is easy to use, especially for elderly people with weak legs and bathers with impaired legs.

  Further, in this case, the sole is naturally positioned at the spout 210 just by placing the leg on the step part 111 for placing the leg, so that a special convex part of the sole positioning part is formed on the inner wall of the bathtub near the hot water spout. There is no need to provide a recess.

  Then, the bathtub apparatus concerning the 2nd Embodiment of this invention is demonstrated. In addition, since the basic structure of the bathtub apparatus concerning the 2nd Embodiment of this invention is the same as that of FIG. 1 except the control pattern of the control part 150, description about a common structure is abbreviate | omitted. In addition, FIG. 11 shows the area | region before and behind the sole which receives a stimulus with the bathtub apparatus concerning 2nd Embodiment, and it turns out that it is the same as that of the case of 1st Embodiment shown in FIG.

  As shown in FIG. 12, the bathtub device 2 according to the second embodiment is characterized by the opening / closing pattern of the front electromagnetic valve 142 and the rear electromagnetic valve 143 by the control unit 150.

  Specifically, as shown in FIG. 12, the opening time and closing time of the front solenoid valve 142 (upper stage in the figure) and the opening time and closing time of the rear solenoid valve 143 (lower stage in the figure) are the bathing elapsed time. It is designed to change accordingly.

  In FIG. 12, both the opening time and closing time of the front solenoid valve 142 and the rear solenoid valve 143 are increased according to the elapsed bathing time. However, unlike this, both the opening time and closing time of the front solenoid valve 142 and the rear solenoid valve 143 originally set to be long may be shortened according to the elapsed bathing time. That is, the opening time and closing time of the front solenoid valve 142 and the rear solenoid valve 143 may be repeated as appropriate depending on the elapsed bathing time.

  Further, as shown in FIG. 13, the opening time and closing time of the front solenoid valve 142 and the rear solenoid valve 143 may be changed irregularly according to the bathing elapsed time.

  The control unit 150 controls the opening and closing of the front solenoid valve 142 and the rear solenoid valve 143 with such a control pattern, thereby acclimatizing the bather's stimulus (being used to the stimulus by continuing to receive the same stimulus) Can be prevented from becoming a training for improving the sense of balance.

  In both the first embodiment and the second embodiment, as shown in FIG. 14, the control unit 150 closes both the front solenoid valve 142 and the rear solenoid valve 143 for a certain period of time and ejects the front. You may make it sometimes provide the time which does not eject warm water from the nozzles 211 and 212 and the rear ejection nozzles 213 and 214 at all.

  Occasional occurrence of this hot water-free jetting condition resets the bather's neurotransmission circuit so that when it is stimulated again, a new stimulus is efficiently transmitted to the neurotransmission circuit, and a sense of balance Can increase the effectiveness of training.

  Then, the bathtub apparatus concerning the 3rd Embodiment of this invention is demonstrated. The bathtub apparatus 3 according to the third embodiment of the present invention is related to the bathtub apparatus 2 according to the second embodiment, and the opening / closing pattern of the front electromagnetic valve 142 and the rear electromagnetic valve 143 by the control unit 150. It has characteristics. Therefore, the basic configuration common to the first embodiment and the second embodiment is the same as that in FIG. 1, and thus description of the common configuration is omitted.

  The specific opening / closing pattern of the front solenoid valve 142 and the rear solenoid valve 143 of the bathtub apparatus 3 according to the third embodiment is as shown in FIG. When the electromagnetic valve 142 is opened, hot water at a flow rate of 20 L / min is ejected from the front ejection nozzles 211 and 212, and when the rear solenoid valve 143 is closed, warm water at a flow rate of 5 L / min is ejected from the rear ejection nozzle 213. , 214. Then, from 4 seconds to 8 seconds after the start of use of the apparatus, the flow rate is reversed and the flow rate of the hot water ejected from the rear ejection nozzles 213, 214 is larger than the flow rate of the hot water ejected from the front ejection nozzles 211, 212. From 8 seconds to 15 seconds after the start of use of the apparatus, hot water with a flow rate of 30 L / min is ejected from the front ejection nozzles 211 and 212, and hot water is ejected from the rear ejection nozzles 213 and 214 in the closed state of the rear solenoid valve. No longer.

  As described above, the hot water having different flow rates depending on the elapsed bathing time is ejected from the front ejection nozzles 211 and 212 and the rear ejection nozzles 213 and 214, so that the stimulation received from each ejection port 210 changes alternately before and after the soles. And acclimatization to the stimulus can be prevented.

Then, the bathtub apparatus concerning the 4th Embodiment of this invention is demonstrated. As shown in FIG. 16, the bathtub apparatus 4 according to the fourth embodiment of the present invention includes hot water jetted from the jet outlet 210 with air at a predetermined frequency of, for example, about 20 Hz to 100 Hz, and is bathed as foam hot water. It is designed to stimulate the soles of the feet. Here, the frequency of the jet including air can be changed by opening and closing the solenoid valve, and the stimulation can be changed by the frequency of the pulsating flow of an electromagnetic pump or the like without using air, Can be periodically interrupted to generate a pulsating flow.
Then, the frequency of the air added to the warm water ejected from the front ejection nozzles 211 and 212 and the frequency of the air added to the warm water ejected from the rear ejection nozzles 213 and 214 are always made different from each other, and the bather is sent from the front ejection nozzles 211 and 212. The intensity of the stimulus from the warm water received by the front and back of the foot and the intensity of the stimulus from the warm water received by the back of the bather's sole from the rear ejection nozzles 213 and 214 are alternately changed. This also exhibits an effect equivalent to the effect described above. In other words, it is possible to stimulate the sole of the feet with foam hot water that alternately changes the stimulus to the front and back of the bather's sole in the bathtub, coupled with making the nerve sensitive by the thermal effect during bathing. In addition, sensory receptors related to the sense of balance and recovery of the function of the nervous system leading to this can be achieved.

  As is clear from the various embodiments described above, the intensity of the stimulation received by the bather's soles from the hot water jetted from the jet outlet 210 is the magnitude of the flow rate, flow velocity, frequency, etc. of the hot water jetted out. Even if any of these is used, the action of the present invention can be exhibited.

  In FIG. 17, the size of the circle represents the diameter of each ejection nozzle, and the flow rate is changed by changing the diameter before and after, whereby the state of stimulation received by the sole changes. That is, the flow velocity is increased by narrowing the aperture, and the magnitude relationship of the state of stimulation is alternately switched by repeating the flow alternately. Here, the aperture is narrowed by blocking a part of the opening using a shielding plate.

  Then, the bathtub apparatus concerning the 5th Embodiment of this invention is demonstrated. As shown in FIG. 18, the bathtub apparatus 5 according to the fifth embodiment includes a sole positioning part 520 provided on one end inner wall of the bathtub in the longitudinal direction, front ejection nozzles 511 and 512, and rear use. It has jet nozzles 513 and 514, the sole positioning part 520 is provided considerably above the bottom of the bathtub, and when the bather puts the sole on the sole positioning part 520, the knee joint is bent more than in the above embodiment. The front ejection nozzles 511 and 512 and the rear ejection nozzles 513 and 514 are respectively positioned on the front and back of the sole while maintaining the above state. Since other configurations are the same as those in FIG. 1, the corresponding reference numerals are assigned and detailed description is omitted.

  In this embodiment, by having the sole positioning part 520 and the hot water spout 510 at a position relatively distant from the bottom wall of the bathtub inner wall, each of the hot water spouts 510 is in a state where the lower limb of the bather is considerably bent. The magnitude of the stimulus that the bather receives before and after the sole of the foot from the hot water that spouts alternates, and when the bather is closer to the standing position, such a special pattern of stimulation, i.e., the pseudo load in the standing position is applied. It becomes possible to receive on the sole of the foot, and even in the same bathing time, the sense of balance can be improved more than in the above-described embodiment.

  In other words, by providing the sole positioning part at such a position, the lower limb muscles are stretched while the foot is placed on the sole positioning part, and the lower limb muscles are always activated during bathing to stand in a more upright position. You can take a bath in a close state. That is, in the sitting position, the central nervous system that is active in the motored state is in a resting state, and even if the somatic sensation is given a vibration stimulus, the facilitating effect of the neural circuit related to the balance sensation is not perfect, but such a foot The central nervous system can be activated by applying a vibration stimulus while stretching the lower limb muscles during bathing by the positioning means of the bath. Can be carried out effectively.

  Then, the bathtub apparatus concerning the 6th Embodiment of this invention is demonstrated. In describing the bathtub device 6 according to the sixth embodiment, as shown in FIG. 19, the relationship between the impact force and time received by the forefoot during walking of the elderly and adults, and the impact and time received by the buttocks. And the relationship between the impact force applied to the entire sole and time.

References regarding FIG. 19 and the description related thereto are as follows.
Authors: Ryuta Tomita, Katsuo Inoue, Shuta Kawamata Title: Examination of floor finishing structure from the viewpoint of walking characteristics and walking feelings of elderly and adults Architectural Institute of Japan Environmental Studies No. 569, 7-14, 2003 Issued in July As can be seen from FIG. 19, adults first receive a large impact force on the buttocks for a short time during one-step walking, and then the front foot receives a large impact for a short time when the foot kicks back. I understand that On the other hand, elderly people receive a small impact force on the entire sole during walking for a long time and become walking like a so-called foot, which is different from walking with a sharpness like an adult I understand. That is, while an adult is walking, the heel contact and the toe kick are clearly performed, but the elderly person walks like a foot so that no pressure distribution occurs. In this way, elderly people can no longer feel the pressure distribution of their soles in their daily lives, and the tempo of walking has deteriorated. Therefore, when the bather is an elderly person, a pattern of a pseudo load resembling the walking pattern of an adult is added to the left and right soles in a specific order, and this pattern is applied to the elderly's central nervous system and the neural circuit leading to it. The applicant considered that it is possible to train an adult to walk in a walking pattern that is similar to an adult's walking pattern.

  More specifically, a pressure distribution is generated on the sole during walking, and pressure is applied in the order of the heel of one foot, the toe, the heel of the other foot, and the toe. A signal input from the pressure distribution to the central nerve via a neural circuit is considered as one information source for measuring the timing of walking. On the other hand, when actually walking, the central nervous system is equipped with a pattern generator that indicates the walking timing, whereby walking is performed with a good tempo. At this time, the pressure applied to the sole differs between adults and elderly people.

  Therefore, by switching the magnitude relationship of the stimulus applied to the front and back of the foot in this order, the pressure distribution of the normal walking pattern, that is, the pseudo load related to walking can be positively applied to the sole. It is possible to improve the sensitivity of baroreceptors important for walking and enhance the facilitation of neural circuit during bathing, make the central nervous system recognize the normal walking pattern, and remember the walking tempo while bathing, and correct walking It can be so.

  To achieve this, a special pattern of warm water squirts before and after the sole, that is, from the back of the sole to the front of the sole, and then from the back of the other foot to the front of the sole. The present applicant has come up with the idea that the walking pattern of the elderly can be brought closer to the walking pattern of an adult by ejecting hot water one after another. And I thought that it would be possible to help fall prevention and the like during the walking of the elderly by bringing the walking pattern of the elderly closer to that of the adult.

  FIG. 20 individually shows regions where hot water sprayed from the hot water spray nozzles 211 to 214 shown in FIG. FIG. 21 is a timing chart showing the size of the hot water jets before and after the bather's left and right soles from the start of use of the apparatus for each region shown in FIG. As can be seen from these drawings, the control unit 150 of the bathtub device according to the present embodiment is configured such that the one foot rear side (the heel portion is A in FIG. 20 and FIG. 21) to the front side (the toe side and FIG. FIG. 21B), and each corresponding to the rear side of the other sole (the heel portion and C of FIGS. 20 and 21) to the front side (the toe side and FIGS. 20 and 21D). Hot water is sequentially ejected from the warm water ejection nozzles 213, 211, 214, 212 to the front and rear areas A to D of the left and right soles at regular intervals.

  Thereafter, warm water is repeatedly ejected from each warm water ejection nozzle so as to correspond to the user's continuous walking form in this order.

  Normal walking does not end with one step or two, but continues. Therefore, by repeatedly giving a pseudo walking pattern by hot water jetting, it is possible to reproduce walking that is close to normal and effectively perform walking training.

  By ejecting warm water in this way, the actual load that adults receive on the soles during walking can be applied to the soles of elderly bathers as simulated loads with warm water stimulation. Nevertheless, it is possible to reinvigorate the bather's central nervous system and the neurotransmission circuit leading to it as if it were an adult, and to train the actual walking pattern closer to that of the adult.

  Subsequently, a modification of the sixth embodiment using the above-described knowledge of the present applicant will be described. As shown in FIG. 22, the bathtub device 6 ′ according to the modification of this embodiment has areas A, B, C, and D for the left foot bather's heel, the side of the foot, the base of the thumb, and the thumb. E, F, G, and H of the bather's heel, foot side, thumb base, and thumb regions, and the hot water jet nozzles 611 to 614 and 615 to 618 corresponding to the respective hot water jet nozzles 610 are illustrated. As shown in 23, it is provided corresponding to the sole positioning part (not shown) of the inner wall of the bathtub. Since the other components shown in FIG. 23 are the same as those in the above-described embodiment, the corresponding reference numerals are assigned and detailed description is omitted. FIG. 24 is a diagram corresponding to FIG. 22 showing each region of the sole where pressure distribution occurs during actual walking.

  In this modification, opening and closing of the electromagnetic valves 641 to 644 and 645 to 648 is sequentially switched through the control of the control unit, and the hot water in the bathtub circulated by the pump 120 corresponds to each hot water jet nozzle 611 accordingly. The stimuli received by the soles are changed in the order of the regions A to H as shown in FIG.

  More specifically, in the case of this modification, as shown in FIG. 25, the left foot heel (A in FIGS. 22 and 25), the outer side (B in FIGS. 22 and 25), and the base of the thumb (see FIG. 25). 22 and C in FIG. 25), hot water is ejected from each of the hot water ejection nozzles 611 to 614 in the order of thumb (D in FIGS. 22 and 25), and then the right foot heel (E in FIGS. 22 and 25), Warm water is supplied from each of the hot water jet nozzles 615 to 618 in the order of the outer portion (F in FIGS. 22 and 25), the base of the thumb (G in FIGS. 22 and 25), and the thumb (H in FIGS. 22 and 25). It erupts and stimulates the soles in this order.

  Thereafter, warm water is repeatedly ejected from each warm water ejection nozzle so as to correspond to the user's continuous walking form in this order.

  Normal walking does not end with one step or two, but continues. Therefore, by repeatedly giving a pseudo walking pattern by hot water jetting, it is possible to reproduce walking that is close to normal and effectively perform walking training.

  This makes it possible to apply a simulated load that approximates the actual walking pattern of an adult with a so-called tilt using the side of the sole of the foot while walking to the sole of the elderly during bathing. It is possible to train an adult's gait pattern into the nerve during bathing and to approach the adult's gait pattern during actual walking.

  Finally, the modification of the basic composition of the bathtub apparatus concerning the above embodiment is demonstrated. 26 to 30 are diagrams showing such modifications. In FIG. 26, instead of providing solenoid valves for the front hot water channel 132 and the rear hot water channel 133, respectively, a front pump 122 and a rear pump 123 are provided for the hot water channels 132 and 133, respectively. Any of the flow rate, flow velocity, and frequency of the hot water jetted out is alternately changed to alternately change the intensity of stimulation received by the front and back of the sole (pseudo load during walking).

  27 uses the front nozzle pumps 125 and 126 in which the front pump and the front ejection nozzle of FIG. 26 are integrated, and the rear pump with the nozzle in which the rear pump and the rear ejection nozzle are integrated. The bathtub apparatus using 127,128 is shown. Even in such a configuration, stimulations of different strengths can be applied alternately before and after the sole of the bather, that is, a pseudo load during standing or walking, and balance training and walking training can be performed. You will be able to do it inside.

  In FIG. 28, the hot water jet nozzles 212 and 214 corresponding to the front and back of the right foot sole of the bather are provided with jet nozzle covers 282 and 284, and the jet nozzle covers 282 and 284 are rotated to change the hot water jet position. The configuration is shown. As is apparent from the figure, the hot water jet nozzles 212 and 214 are provided in the jet nozzle covers 282 and 284 having a cup shape slightly bulging toward the inside of the bathtub, and the jet nozzle covers 282 and 284 rotate on the inner wall of the bathtub. Fits freely. The hot water jet nozzles 212 and 214 are provided so as to be biased in the radial direction from the center of the jet nozzle covers 282 and 284, and the bather supplies hot water from the hot water jet nozzles 212 and 214, for example, at the tips of the fingertips of the soles of the feet When the jet nozzle covers 282 and 284 are rotated and positioned as shown in FIG. 28 (a), the hot water from the hot water jet nozzles 212 and 214 is allowed to flow out. If it is desired to spray further inside and the inside of the ridge, conversely, the spray nozzle covers 282 and 284 are rotated by 180 ° and positioned as shown in FIG.

  In addition, although the average size of the foot differs depending on whether the bather is male or female, the position of the hot water jet nozzles 212 and 214 is finely adjusted by the jet nozzle covers 282 and 284 as described above. Regardless of the difference in foot size with gender and age, it is possible to always spray the optimal warm water before and after the sole.

  Further, as a modification of the ejection nozzle covers 282 and 284, ejection nozzle covers 292 and 294 as shown in FIG. 29 may be used. The jet nozzle covers 292 and 294 have a cup shape that bulges toward the inside of the bathtub, and is rotatably fitted to the inner wall of the bathtub. The hot water jet nozzles 212 and 214 have long holes 292a and 294a extending in the diameter direction of the jet nozzle covers 292 and 294 and in the vertical direction of the bathtub, and the hot water jet nozzles 212 and 214 are the long holes 292a. , 294a so as to be slidable.

  Accordingly, the hot water jet nozzles 212 and 214 are adjusted by moving along the long holes 292a and 294a of the jet nozzle covers 292 and 294 so as to match the size of the foot according to the sex, age, and physique of the bather. It becomes possible. Even with such a configuration, the hot water from the hot water jet nozzles 212 and 214 can always be jetted to the optimum positions before and after the soles, and the effects of the present invention can be sufficiently exerted regardless of the size of the foot of the bather. It becomes possible to do.

  In addition to being able to cope with the difference in the size of the user's foot by providing the above-described ejection nozzle cover, even when the foot is properly applied to the ejection nozzle, By adjusting the position, it is possible to reliably give a jet to the front and back of the sole.

  FIG. 30 shows an example of a jet outlet provided with a single hot water jet nozzle in which the jet direction is variable, instead of separately providing a front jet nozzle and a rear jet nozzle as in the above-described embodiment. It is a specific configuration. The jet nozzle 900 includes a jet nozzle 901, a throat 902 that changes the jet direction of hot water jetted from the jet nozzle 901, a pump 903 and a motor 904 that supply hot water to the jet nozzle 901, and air to the hot water of the jet nozzle 901. An air hose 905 that gives a stimulus to the soles by mixing it and a decorative cover 906 in which the tip of the throat 902 protrudes into the bathtub and hot water in the bathtub can be introduced into the pump, and is formed on the inner wall of the bathtub It is liquid-tightly attached to the hole.

  Even if the spout 900 has such a configuration, the above-described embodiment relating to balance training is performed by selectively orienting the throat 902 toward the front side or the rear side of the sole positioned by the sole positioning unit. With the special hot water spray pattern similar to the above, it is possible to spray hot foam water alternately before and after the sole of the foot, and it is possible to perform training for improving the sense of balance of bathers at the same time as bathing. In addition, by applying a hot water foam jet in a specific order as in the above-described embodiment related to walking training before and after the left and right soles, a walking pattern closer to an adult is made to the bather's central nerve and a nerve transmission circuit leading to this It can be engraved into the gait pattern and can be brought closer to the adult walking pattern during actual walking.

  As described above, by using the bathtub device according to the present invention, stimulation can be given to the front and back of the foot by a jet flow in which the magnitude of stimulation to the front and back of the bather alternately changes in the bathtub. Combined with the sensitivity of the nerves due to the thermal effect, the sensory receptors related to balance and the functional recovery of the nervous system can be achieved. In addition, since buoyancy acts on the bather in the bathtub, extraneous input due to gravity, etc. to each sensory receptor can be blocked, and the nervous system can be concentrated only on the stimulus received from the sole of the foot, promoting the neural circuit It becomes possible to increase the faculty.

  In addition, since buoyancy always acts during bathing, bathers can take a bathing posture that is close to standing, and the sensation of the sensory receptors and nervous system is as if they were standing only by stimulation from the soles of the feet. Thus, functional recovery of sensory receptors and nervous system can be achieved.

  In addition, by switching the magnitude relationship of the stimulus applied to the front and back of the foot in order, the pressure distribution of a normal gait pattern can be simulated in the back of the foot, which is an important baroreceptor for walking. In addition to improving the sensitivity of the neural network and enhancing the facilitation of the neural circuit during bathing, the normal nervous pattern is recognized by the central nervous system, and the walking tempo is learned during bathing so that correct walking can be performed.

  In addition, although each embodiment mentioned above demonstrated as a type of the circulation type bathtub apparatus in which the bathtub apparatus circulates the hot water in a bathtub to a jet nozzle via a pump, it is not necessarily in this type of a circulation type bathtub apparatus. Is not limited, and hot water from the hot water heater is jetted from the hot water jet nozzle through the solenoid valve to the front and back of the bather in the special pattern described above, and the remaining hot water in the bathtub is appropriately drained from the drain outlet. You may do it.

It is a schematic block diagram which shows the bathtub apparatus concerning the 1st Embodiment of this invention with a bather. It is sectional drawing which cuts and shows the part of the bathtub of the bathtub apparatus shown in FIG. 1 along the longitudinal direction. It is explanatory drawing which shows the positional relationship of the hot water ejection nozzle of the bathtub apparatus shown in FIG. 1, and a bather's sole. It is a timing chart which shows the flow volume of the hot water which ejects from the front ejection nozzle and the rear ejection nozzle of the bathtub apparatus shown in FIG. 1 along the elapsed time from apparatus use start. It is a partial cross section figure of the bathtub which shows the modification of the sole positioning part of the bathtub apparatus shown in FIG. It is a partial cross section figure of the bathtub which shows the modification of the sole positioning part different from FIG. The partial sectional view (FIG. 7A) of the bathtub showing a modified example of the sole positioning part different from FIGS. 5 and 6 and the bathtub showing a state where the bather puts his foot on the sole positioning part. It is a partial cross section figure (Drawing 7 (b)). Partial sectional view of the bathtub (FIG. 8 (a)) showing a modification of the sole positioning part different from FIGS. 5 to 7 and a partial cross section of the bathtub showing a state where the foot is applied to the sole positioning part It is a figure (FIG.8 (b)). FIG. 9 is a partial cross-sectional view of a bathtub showing a modified example of a sole positioning part different from those in FIGS. 5 to 8. It is a schematic block diagram which shows the modification of the bathtub apparatus provided with the leg mounting part in the bathtub of the bathtub apparatus shown in FIG. It is explanatory drawing which shows the positional relationship of the hot water ejection nozzle of the bathtub apparatus concerning the 2nd Embodiment of this invention, and a bather's sole. FIG. 12 is a timing chart showing the flow rate of hot water ejected from the front ejection nozzle and the rear ejection nozzle of the bathtub apparatus according to the second embodiment shown in FIG. 11 along the elapsed time from the start of use of the apparatus. FIG. 13 is a timing chart showing the flow rate of hot water ejected from the front ejection nozzle and the rear ejection nozzle of the bathtub apparatus according to the modification of the second embodiment shown in FIG. 12 along the elapsed time from the start of use of the apparatus. FIG. 13 is a timing chart showing the flow rate of hot water ejected from the front ejection nozzle and the rear ejection nozzle of the bathtub apparatus according to a further modification of the second embodiment shown in FIG. 12 along the elapsed time from the start of use of the apparatus. is there. It is a timing chart which shows the flow rate of the warm water spouted from the front ejection nozzle and the rear ejection nozzle of the bathtub apparatus concerning the 3rd Embodiment of this invention along the elapsed time from apparatus use start. It is a timing chart which shows the frequency of the foam warm water spouted from the front ejection nozzle and the rear ejection nozzle of the bathtub apparatus concerning the 4th Embodiment of this invention along the elapsed time from apparatus use start. It is explanatory drawing which shows the positional relationship of the hot water ejection nozzle of the bathtub apparatus of the bathtub apparatus concerning the 3rd and 4th embodiment of this invention, and a bather's sole with the aperture of each hot water ejection nozzle. It is a schematic block diagram which shows the bathtub apparatus concerning the 5th Embodiment of this invention with a bather. It is a figure explaining the relationship between the impact force and time which a forefoot part receives at the time of walking of an elderly person and an adult, the relationship between the impact and time which a buttocks receives, and the relationship between the impact force and time which the whole sole receives. It is a figure explaining the walking pattern of an elderly person and an adult in relation to each area | region of a sole in relation to the bathtub apparatus concerning the 6th Embodiment of this invention. It is a timing chart which shows the jet of warm water which hits a bather's right and left sole before and after use of an apparatus for every area | region shown in FIG. It is a figure explaining the walking pattern of an elderly person and an adult in relation to each area | region of a sole in relation to the bathtub apparatus concerning the modification of 6th Embodiment. It is a schematic structure which shows the bathtub apparatus concerning the modification of 6th Embodiment with a bather. It is a figure corresponding to FIG. 22, and is a figure explaining each area | region of the sole which a pressure distribution produces at the time of an actual walk. It is a timing chart which shows the jet of the warm water which hits a bather's right and left sole front side, a side, and a back side for every area | region shown in FIG. It is a schematic structure which shows the modification of the basic composition of the bathtub apparatus concerning each embodiment with a bathing person. It is a schematic structure which shows the modification regarding the basic structure of the bathtub apparatus different from FIG. 26 with a bathing person. It is a figure explaining the modification which provided the ejection nozzle cover in each ejection nozzle, and changed the warm water ejection position by rotating the ejection nozzle cover, and shows the state where the interval between the front ejection nozzle and the rear ejection nozzle is widened The perspective view (FIG. 28 (a)) shown with the partial cross section of FIG. 28 and the perspective view (FIG. 28 (b)) which shows the state which narrowed the space | interval of the front ejection nozzle and the rear ejection nozzle with the partial cross section of the bathtub. is there. It is a figure which shows the further modification corresponding to FIG. 28, and is the perspective view (FIG. 29 (a)) which shows the intermediate state of the space | interval of the front ejection nozzle and the rear ejection nozzle with the partial cross section of a bathtub, and front use It is a perspective view (Drawing 29 (b)) which shows the state where the interval of the ejection nozzle and the back ejection nozzle was narrowed with the partial section of a bathtub. It is sectional drawing of the jet nozzle which has the single hot water jet nozzle which made the jet direction variable. It is a figure which shows the change accompanying aging of a muscular strength and balance power. It is a figure explaining the factor of a balance feeling. It is a figure explaining posture control by baroreceptor stimulation. It is explanatory drawing of the gravity center fluctuation in a person's standing posture, The figure (FIG. 34 (a)) explaining the force which acts on a frontal surface, a sagittal surface, and a horizontal surface of a standing person, and the figure explaining a gravity center fluctuation range ( FIG. 34 (b)).

Explanation of symbols

1-6, 6 'Bathtub apparatus 110 Bathtub 111 Steps for placing lower limbs 120 Pump 122 Front pump 123 Rear pump 125, 126 Front nozzle pump 127, 128 Rear nozzle pump 130 Circulation channel 131 Common hot water flow Path 132 Front hot water flow path 133 Back hot water flow path 140 Solenoid valve 142 Front solenoid valve 143 Rear solenoid valve 150 Control section 210 Spout 211, 212 Front ejection nozzle 213, 214 Rear ejection nozzle 220 Foot positioning 221, 222 Protrusion part 230 Foot positioning part 231, 232 Recess part 240 Foot sole positioning part 241, 242 Projection part 250 Foot positioning part 251, 252 Projection part 260 Foot positioning part 261 -264 Foot side positioning protrusion 270 sole positioning part 271 272 dent part 282 284 Spout nozzle cover 292, 294 Spout nozzle cover 292a, 294a Long hole 510 Hot water spout 520 Foot positioning part 511, 512 Front spout nozzle 513, 514 Back spout nozzle 610 Warm water spout 611-618 Hot water spout nozzle 641- 648 Solenoid valve 900 Spout 901 Spout nozzle 902 Throat 903 Pump 904 Motor 905 Air hose 906 Cosmetic cover

Claims (3)

Ejection and the right foot spout having a bather right foot corresponding to the jetting nozzle for right before a jet nozzle and right back to eject jets around the back of the corresponding to jet around the left back of the bather a left foot spout having a left front for ejecting nozzles and ejection nozzles for left behind that, the a bathtub apparatus comprising a bath inner wall,
The right foot jets, switches back and forth ejection timing of the jet, as the magnitude relationship of the right foot before and after undergoing stimulus alternately changed by the jet for ejecting the right front for ejecting nozzle and for jetting right behind Nozzle or al And
The left foot spout is configured to switch the jetting timing of the jets back and forth so that the magnitude relationship of the stimulation received by the front and back of the left foot is alternately changed by the jets ejected from the left front foot jet nozzle and the left foot back jet nozzle,
The bathtub device characterized in that the front-rear switching timing at the right foot spout is different from the front-back switching timing at the left foot spout . Two rows of left and right are provided on the inner wall of the bathtub so as to correspond to the left and right feet of the bather, and jets are jetted from one of the left and right front jet nozzles to the front side of the foot at the same time as the rear of the left and right sides. Jetting a jet from one of the other jet nozzles to the back of the sole, and jetting a jet from the other of the left and right front jet nozzles to the front of the sole, simultaneously with the left and right rear jet nozzles. The bathtub apparatus according to claim 1, wherein jetting of jets from one side to the rear side of the sole is alternately performed . Two rows of left and right sides are provided on the inner wall of the bathtub so as to correspond to the left and right feet of the bather, and the front jet nozzle from the rear jet nozzle on either the left or right side of the jet port, The control is performed so as to switch the magnitude relationship of the stimulus that the jet stream gives to the front and back of the foot in the order from the rear jet nozzle on the left or right side of the jet outlet to the front jet nozzle. The bathtub apparatus as described in.

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