JP4835945B2 - Jet bath equipment - Google Patents

Description

  The present invention relates to a jet bath apparatus that jets a jet into bathtub water.

  2. Description of the Related Art Conventionally, there is a type in which a jet nozzle is provided on a bathtub wall and a jet is jetted from the nozzle into the bathtub water. For example, Patent Document 1 discloses that a nozzle body in which a jet port of a jet hole provided inside is substantially circular and is eccentric from an axial center position and is rotatably accommodated in a unit jet cover, A nozzle device is disclosed that includes an orifice that injects water into a jet hole of a nozzle body at a predetermined pressure. Water in the bathtub is injected at a predetermined pressure into the jet hole of the nozzle body through the orifice, mixed with air to become a bubble mixed jet, and jetted into the bathtub from the jet port of the jet hole as a jet jet. At this time, since the jet port of the nozzle body is provided at a position eccentric with respect to the axial center position, the nozzle body is rotated by the jet flow from the orifice, and thereby the rotating jet flow in which the jet direction of the jet jet is changed. Is obtained.

  In the nozzle device disclosed in Patent Document 1, since the movement trajectory of the rotating jet is circular, a feeling of shiatsu massage cannot be obtained by locally concentrating the jet on a certain portion, and the curvature of the jet movement trajectory is not obtained. Is almost constant and habituates with little change.

Further, in Patent Document 1, a stopper that prohibits rotation of the nozzle body is provided, and this stopper can be operated manually or automatically to fix the nozzle body in a predetermined position and realize jet ejection in a state where rotation is stopped. Although it is also disclosed, it is easy to acclimatize when the rotation of the jet stops completely, and the skin may become itchy when the jet hits in one place.
JP 2001-62354 A

  The present invention provides a jet bath apparatus that provides a feeling of acupressure massage that moves on the surface of a human body while being naturally pressed by a finger rather than mechanically.

  According to one aspect of the present invention, a bathtub body having a bathtub water inlet formed in a bathtub wall, a pressurizer that sucks and pressurizes bathtub water from the inlet, and bathtub water sent from the pressurizer A jet nozzle having a jet outlet for jetting the water into the bathtub water stored in the bathtub body, and the jet nozzle is configured to draw a curve in which the center of the jet collision portion with respect to the bather changes in curvature. There is provided a jet bath apparatus characterized by jetting a jet so as to draw a trajectory that continuously and repeatedly moves the range and the second range surrounding the first range.

  ADVANTAGE OF THE INVENTION According to this invention, the jet bath apparatus which can obtain the acupressure massage feeling which moves on the human body surface while being pushed with a finger naturally not mechanically is provided.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic plan view illustrating a schematic configuration of a jet bath apparatus according to an embodiment of the present invention.
FIG. 2: is the schematic diagram which looked at the bathtub main body from the side surface direction in the same jet bath apparatus.

  The jet bath device according to the present embodiment includes a bathtub body 1, a pump 7 that is a pressurizing device, a jet nozzle 11, and the like.

  The bathtub main body 1 has a pair of long side bathtub walls 3a and 3b facing each other substantially in parallel and a pair of short side bathtub walls 4a and 4b facing each other substantially in parallel. A bathtub rim 2 is provided at the upper edge of the bathtub body 1 so as to project outwardly in a flange shape.

  A suction port 5 is formed in the long side bathtub wall 3b. When the pump 7 that is a pressurizing device is driven, the bathtub water (including hot water) stored in the bathtub body 1 is sucked into the flow path 13 through the suction port 5.

  One end of the flow path 13 is connected to the suction port 5, and the other end is connected to the suction port of the pump 7. The pump 7 sucks bathtub water into the flow path 13 from the suction port 5, pressurizes the sucked bathtub water, and discharges it to the flow path 14 connected to the discharge port of the pump 7. The pressurized bathtub water discharged from the pump 7 flows into the jet nozzle 11.

  When not in use, the pump 7 is desirably provided above the suction port 5 in order to drain residual water inside the pump 7. Further, the channel 13 is inclined downward from the pump 7 side toward the suction port 5 as shown in FIG. 2 so that the remaining water in the channel 13 can be drained through the suction port 5 when draining the bath water. It is desirable.

  The suction port 5 may be formed on the bottom surface of the bathtub body 1, but in this case, the suction port 5 is preferably formed on the bathtub wall because the drainage gradient of the flow path 13 described above is difficult to be provided. In general, a bather takes a bath with a posture in which the user leans back on one of the pair of short side bathtub walls and faces the other short side bathtub wall. When it is formed on the side bathtub wall, there is a concern that the suction port 5 is blocked by the bather's back and soles and an excessive load is applied to the pump 7. Therefore, it is desirable to form the suction port 5 in the long side bathtub wall that is not easily blocked by a part of the bather's body or the like.

  As shown in FIG. 1, for example, two jet nozzles 11 are provided on one short side bathtub wall 4 a. The two jet nozzles 11 are approximately the same height (in this embodiment, approximately 230 (mm) from the bottom surface of the bathtub body 1) at a predetermined distance (in this embodiment, the distance between the two jet nozzles 11 is approximately 160 (mm), and the center of the installation position of the two jet nozzles 11 and the central part in the direction of the short side bathtub wall 4a are provided. A bathtub faucet is provided on the other short side bathtub wall 4b side opposite to the one short side bathtub wall 4a provided with the jet nozzle 11. Therefore, the bather naturally takes a bath with the back facing the bathtub wall 4a on the short side where the jet nozzle 11 is provided.

  FIG. 3A is a schematic view illustrating the configuration of a jet apparatus having a jet nozzle 11 and a mechanism for moving the position thereof. The moving mechanism of the jet nozzle 11 is a planetary gear mechanism, and a schematic plan view of the planetary gear mechanism is shown in FIG.

  The planetary gear mechanism has a sun gear 39, a planetary gear 38, and an outer gear 41. The planetary gear 38 performs a revolving motion around the sun gear 39, that is, a planetary motion, while rotating inside the outer gear 41.

  The outer gear 41 is formed in a circular ring shape, and teeth are formed on the inner periphery thereof. The outer gear 41 is held with respect to the casing 37, and the casing 37 is held by the short side bathtub wall 4a. Therefore, the outer gear 41 is fixed with respect to the stationary body and does not rotate.

  A water guide shaft 34 is passed through the casing 37 via a bearing 35, the tip of the water guide shaft 34 is located at the center of the outer gear 41, and a sun gear 39 is provided at the tip. The water guide shaft 34 is rotatably supported by a bearing 35 and is connected to the motor 31 via gears 33 and 32 outside the casing 37.

  The inside of the water guide shaft 34 is hollow, and a flow path of running water introduced through the pipe 42 is formed. The pipe 42 and the water guide shaft 34 are connected by a structure that allows the water guide shaft 34 to be rotated while maintaining a sealing property.

  The structure is shown in FIG. In FIG. 4, the water guide shaft 111 and the pipe 110 correspond to the water guide shaft 34 and the pipe 42 in FIG. 3, respectively.

  The water guide shaft 111 passes through the pipe 110, and a plurality of water guide holes 112 are formed through the pipe wall of the water guide shaft 111 facing the pipe 110. The flowing water flowing through the pipe 110 is introduced into the water guide shaft 111 through the conduction hole 112.

  A pair of O-rings 114 and 115 are held in a portion of the pipe 110 where the water guide shaft 111 enters. The pair of O-rings 114 and 115 sandwich the water guide hole 112 in the axial direction of the water guide shaft 111. It is provided at a position and is in contact with the outer peripheral surface of the water guide shaft 11. The O-rings 114 and 115 prevent the flowing water in the pipe 110 from leaking to the outside from the coupling portion with the water guide shaft 111. The water guide shaft 111 is rotatable while being in contact with the O-rings 114 and 115. The pipe 110 is positioned by regulating the axial displacement of the water guide shaft 111 by a pair of C-rings 113 attached to the outer peripheral surface of the water guide shaft 111.

  The sun gear 39 rotates together with the water guide shaft 34. Teeth are formed on the outer peripheral portion of the sun gear 39, and teeth are also formed on the outer peripheral portion of the disk-shaped planetary gear 38. The teeth of both gears 38 and 39 are engaged with each other. Further, the teeth of the planetary gear 38 mesh with the teeth formed on the inner peripheral portion of the outer gear 41.

  In the planetary gear 38, a cylindrical jet nozzle 11 is fixedly penetrated at a portion on the outer peripheral side. The tip of the jet nozzle 11 faces the inside of the bathtub body 1 and functions as the jet outlet 26. When the water guide shaft 34 is rotated by driving the motor 31, the jet nozzle 11 (jet port 26) performs planetary motion around the sun gear 39 inside the outer gear 41 together with the planetary gear 38.

  The jet nozzle 11 is connected to a flow path inside the water guide shaft 34 via a flexible hose 43 and a pipe 44 provided in the casing 37. The pipe 44 and the water guide shaft 34 are connected by a structure that allows the water guide shaft 34 to rotate while maintaining a sealing property. The structure is the same as the structure described above with reference to FIG. 4, the pipe 44 corresponds to the pipe 110 in FIG. 4, and the water guide shaft 34 corresponds to the water guide shaft 111 in FIG. 4.

  In the jet bath apparatus according to the present embodiment configured as described above, when a bather operates a switch of a controller (not shown) provided near the bathtub body 1, the pump 7 is activated and stored in the bathtub body 1. The bathtub water is sucked from the suction port 5 into the flow path 13. The sucked bathtub water is pressurized by the pump 7 and introduced into the jet nozzle 11 through the flow path 14, the pipe 42, the flow path inside the water guide shaft 34, the pipe 44 and the flexible hose 43. . The pressurized bath water introduced into the jet nozzle 11 is jetted from the jet nozzle 26 into the bath water stored in the bath main body 1.

  The jet outlet 26 performs a planetary motion that revolves around the sun gear 39 while rotating by driving the water guide shaft 34, and the jet outlet 26 is a surface substantially perpendicular to the water guide shaft 34 (centering on the water guide shaft 34). The circular moving surface) is also moved in the radial direction while moving in the circumferential direction. During the movement, the angle of the jet nozzle 11 relative to the moving surface, that is, the jet ejection angle is constant, for example, 90 °.

  FIGS. 5A and 5B show examples of movement trajectories of the ejection port 26. Depending on the ratio of the number of teeth (radius) of the planetary gear 38 and the number of teeth (radius) of the outer gear 41, the movement locus changes. (A) is when the ratio of the number of teeth (radius) of the planetary gear 38 to the number of teeth (radius) of the outer gear 41 is 20:47, and (b) is the number of teeth (radius) of the planetary gear 38 and the outer gear. Examples of movement trajectories when the ratio of 41 to the number of teeth (radius) is 13:47 are shown. In the case of (a), it is possible to concentrate the jet near the center of the moving range.

  As shown in FIG. 6, the center of the jet collision site where the jet jetted from the jet nozzle 26 moving as described above collides against the bather is the first range a and the first range. A trajectory L is drawn which continuously moves in a second range b surrounding the range a. The center of the jet collision site moves not on a circle with a constant curvature or on a trajectory L that draws a curve with a changing curvature, but on a linear zigzag trajectory.

  The first range a is within the circle of the first circle C1, and the second range b is the second circle C2 that shares the center with the first circle C1 and has a larger diameter than the first circle C. The range is inside and excludes the first circle C1 within the circle (first range a).

  The first range a corresponds to a range (for example, in a circle having a diameter of about 20 mm) that is desired to be pressed intensively (locally) in response to a jet collision on the back of the bather, for example. The bather feels like receiving a shiatsu massage with a jet.

  The movement trajectory L of the jet collision site does not draw a circular shape with a constant curvature, but moves along a curve with a changing curvature. Therefore, by appropriately setting the gear ratio in the planetary gear mechanism described above, In order to obtain a finger pressure feeling that is pressed by a finger, it is possible to apply a jet stream locally concentrated in a desired narrow range (first range a).

  As shown in FIG. 7, when the radius of the first circle C1 is R1, the radius of the second circle is R2, and the radius of the ejection port 26 is Rn, if R2−R1 <Rn, the thickness is about 2Rn. A part of the jet is always in the first range a, and the jet always hits the part (first range a) that the bather wants to hit, so the jet hits the part intensively. You can get a feeling of acupressure and do not feel frustrated because the jet does not hit the part you want to hit.

  If the jet continues to be received only in the same part, it will become accustomed and will remain pressed, so it will be less likely to get stuck. However, in this embodiment, since the jet nozzle 26 moves in the radial direction while moving in the circumferential direction of the first circle C1 and the second circle C2, the jet collision site with respect to the bather is the site to be pressed (first 1) a range of 1) as well as its surroundings (second range b), so that the feeling that the pressing force acts on the first range a and the feeling that the pressing force is released are repeated. Rhythm sensation similar to acupressure massage can be realized, and the jet collision part moves along a curved trajectory where the curvature changes, so it moves on the human body surface without being mechanically pressed with fingers. A shiatsu massage feeling is obtained. For this reason, even if you take a bath for a long time, you can relax and relax without getting bored. If the jet is moved in a very wide range, the jet does not readily reach the part (first range a) that the user wants to see, so the diameter of the second circle C2 that defines the outermost side of the second range b is 30 to 80 (Mm) is desirable.

  In order to realize the sensation of being massaged with a finger (especially a thumb often used for general acupressure), the second circle C2 having a diameter of 5 cm or more and 8 cm or less has a thickness of 1 cm or more and 3 cm or less. It is desirable to move while pushing with the jet flux. In order to realize a jet flux having a thickness of 1 cm or more and 3 cm or less, the diameter of the jet outlet 26 of the jet nozzle 11 is preferably 1 cm or more and 3 cm or less.

  In order to obtain a natural acupressure massage feeling that moves on the surface of the human body while being pressed by a finger, it is desirable that the moving speed of the jet collision site is 10 to 50 (cm / sec).

  FIG. 8A is a schematic diagram showing another specific example of the jet apparatus having the jet nozzle 11 and a mechanism for moving the position thereof. Also in this specific example, the moving mechanism of the jet nozzle 11 is a planetary gear mechanism, and a schematic plan view of the planetary gear mechanism is shown in FIG.

  In this specific example, an outer gear 41 and a planetary gear 47 having a diameter larger than the radius of the outer gear 41 are provided. The planetary gear 47 revolves around the center of the outer gear 41 while rotating inside the outer gear 41.

  The outer gear 41 is formed in a circular ring shape, and teeth are formed on the inner periphery thereof. The outer gear 41 is held with respect to the casing 37, and the casing 37 is held by the short side bathtub wall 4a. Therefore, the outer gear 41 is fixed with respect to the stationary body and does not rotate.

  A water guide shaft 34 is passed through the bearing 37 via a bearing 35, and the tip of the water guide shaft 34 is coupled to a disk-shaped rotating body 45 provided in the casing 37. The water guide shaft 34 is rotatably supported by a bearing 35 and is connected to the motor 31 via gears 33 and 32 outside the casing 37.

  The inside of the water guide shaft 34 is hollow, and a flow path of running water introduced through the pipe 42 is formed. The pipe 42 and the water guide shaft 34 are connected by a structure that allows the water guide shaft 34 to be rotated while maintaining a sealing property. This structure is the same as the structure described above with reference to FIG. 4, the pipe 42 corresponds to the pipe 110 in FIG. 4, and the water guide shaft 34 corresponds to the water guide shaft 111 in FIG. 4.

  Inside the rotation value 45, a flow path communicating with the flow path inside the water guide shaft 34 is formed. A water guide shaft 46 extending substantially parallel to the water guide shaft 34 is provided on the outer peripheral side portion of the rotating body 45. The inside of the water guide shaft 46 is hollow, and a flow path communicating with the flow path inside the rotating body 45 is formed.

  The water guide shaft 46 is connected to the rotating body 45 in a structure that allows the water guide shaft 46 to rotate while maintaining a sealing property. The structure is the same as the structure described above with reference to FIG. 4, and the rotating body 45 in which the flow path is formed corresponds to the pipe 110 in FIG. 4, and the water guide shaft 46 corresponds to the water guide shaft 111 in FIG. 4. Correspond.

  When the water guide shaft 34 is rotated by driving the motor 31, the rotating body 45 rotates together with the water guide shaft 34. As the rotating body 45 rotates, the water guide shaft 46 rotates and moves along a trajectory that draws a circle around the water guide shaft 34. The tip of the water guide shaft 46 that protrudes toward the planetary gear 47 is coupled to the planetary gear 47, and the planetary gear 47 can rotate by rotation around the axis center of the water guide shaft 46.

  Teeth are formed on the outer peripheral portion of the planetary gear 47, and the teeth mesh with the teeth formed on the inner peripheral portion of the outer gear 41. In the planetary gear 47, a cylindrical jet nozzle 11 is fixed to the outer peripheral portion of the planetary gear 47. The tip of the jet nozzle 11 faces the inside of the bathtub body 1 and functions as the jet outlet 26.

  The jet nozzle 11 is connected to a flow path inside the water guide shaft 46 via a pipe 48. The water guide shaft 46, the pipe 48, the jet nozzle 11 and the planetary gear 47 are integrally formed.

  When the water guide shaft 34 and the rotating body 45 are rotated by driving the motor 31, the water guide shaft 46 moves along a locus that draws a circle around the water guide shaft 34, so that the jet outlet 26 and the planetary gear 47 together with the outer gear. Perform planetary motion inside 41. That is, the spout 26 moves in the radial direction while moving in a circumferential direction on a surface (circular moving surface) substantially perpendicular to the water guide shaft 34. At this time, the angle of the jet nozzle 11 relative to the moving surface, that is, the jet jet angle is constant (for example, 90 °).

  FIGS. 5C and 5D show examples of movement trajectories of the ejection ports 26 in the case of the embodiment of FIG. Depending on the ratio of the number of teeth (radius) of the planetary gear 47 and the number of teeth (radius) of the outer gear 41, the movement locus changes. (C) is when the ratio of the number of teeth (radius) of the planetary gear 47 to the number of teeth (radius) of the outer gear 41 is 42:47, and (d) is the number of teeth (radius) of the planetary gear 47 and the outer gear. Examples of movement trajectories when the ratio of 41 to the number of teeth (radius) is 24:47 are shown. In the case of (d), the jet can be concentrated on the vicinity of the center of the moving range.

  As illustrated in FIG. 9, the center of the jet collision portion where the jet ejected from the jet nozzle 26 moving in this manner collides against the bather is the first range a and the first range. A trajectory L is drawn that continuously and repeatedly moves around the second range b surrounding the range a. The center of the jet collision site moves not on a circle with a constant curvature or on a trajectory L that draws a curve with a changing curvature, but on a linear zigzag trajectory.

  The first range a is within the circle of the first circle C1, and the second range b is a second circle C2 that shares the center with the first circle C1 and has a larger diameter than the first circle C1. Of the first circle C1 and excluding the inside of the first circle C1 (first range a).

  The first range a corresponds to a range (for example, in a circle having a diameter of about 20 mm) that is desired to be pressed intensively (locally) in response to a jet collision on the back of the bather, for example. The bather feels like receiving a shiatsu massage with a jet.

  The movement trajectory of the jet collision site does not draw a circular shape with a constant curvature, but moves along a curve with a changing curvature, so by setting the gear ratio in the planetary gear mechanism appropriately, In order to obtain a feeling of finger pressure such as being pressed, it is possible to concentrate the jet locally on a desired narrow range (first range a).

  Moreover, since the jet nozzle 26 also moves in the radial direction while moving in the circumferential direction of the first circle C1 and the second circle C2, the jet collision site for the bather is a site to be pressed (first range a). Since it moves not only to its surroundings (second range b), it also has a rhythm close to the actual acupressure massage that repeats the feeling that the pressing force acts on the first range a and the feeling that the pressing force is released Acupressure massage feeling that moves on the surface of the human body while being pressed naturally with a finger, not mechanically, because the jet collision part moves along a curved trace that changes curvature Is obtained. For this reason, even if you take a bath for a long time, you can relax and relax without getting bored.

  As shown in FIG. 10, when the locus L of the center of the jet collision part moves only in the second range b and does not fall within the first range a, it cannot hit the part to which the jet is to be applied. . Also, if the jet hits only the first range a, a natural acupressure massage feeling that the person moves on the surface of the human body while pressing with a finger is not obtained, and habituation by the same part being left pressed Much. Accordingly, it is necessary to design appropriately so that the center of the jet collision site draws a trajectory that repeatedly moves in the first range a and the second range b.

  As shown in FIG. 11, when the radius r1 of the planetary gear 38 is less than or equal to half the radius r2 of the outer ring 41 (r1 ≦ (r2 / 2)), the first circle C1, the second circle C2, and the outer ring 41 , The radius of the first circle C1 is R1, the radius of the second circle C2 is R2, and the distance between the center of the planetary gear 38 and the center of the spout 26 is rd. The condition for the center trajectory to repeatedly travel between the first range a and the second range b is R1> r2- (r1 + rd).

  As shown in FIG. 12, when the radius r1 of the planetary gear 47 is larger than half the radius r2 of the outer ring 41 (r1> (r2 / 2)), the first circle C1, the second circle C2, and the outer ring 41 , The radius of the first circle C1 is R1, the radius of the second circle C2 is R2, and the distance between the center of the planetary gear 47 and the center of the jet outlet 26 is rd. The condition for the center trajectory to repeatedly travel between the first range a and the second range b is R1> rd− (r2 + r1).

  In the configuration described above, it is possible to provide a plurality of nozzles on the planetary gear and apply a plurality of jet fluxes to the first range a and the second range b, but a narrow portion is pushed by a plurality of jet fluxes. It is easier for the bather to recognize the point being pressed and the feeling that the pressing point moves on the surface of the human body than when pressed with a single (one) jet flux. Easy to feel. That is, in the human skin, it is easier to feel a change in stimulation by stimulating one part than by simultaneous stimulation to a plurality of parts that are close to each other. mm) It is easier to feel that there is another stimulus at two points if they are separated by more than. Therefore, when a plurality of jet nozzles 11 are provided on the back side (short-side bathtub wall 4a), the two jet nozzles 11 are provided at least 50 (mm) or more, preferably 100 (mm) or more apart. preferable.

  In addition, when the human body receives a jet with bubbles, the boundary between the part that the jet feels and the part that does not collide is ambiguous due to the collision of the bubbles at multiple points and the rising of the bubbles due to buoyancy. It was difficult to feel the movement of the water flow clearly. Therefore, the feeling of moving on the surface of the human body while being pressed by a water flow is not received, and it is difficult to obtain a feeling of shiatsu massage that moves on the surface of the human body while being pressed by a finger.

  Therefore, by not mixing bubbles in the jet, the movement of the water flow on the surface of the human body can be clearly felt without being affected by the bubbles, and the feeling of moving on the surface of the human body while being pushed by the water flow, that is, the finger A shiatsu massage feeling that moves on the surface of the human body while being pressed can be obtained. Note that bubbles (microbubbles, nanobubbles, etc.) having a diameter of several tens (μm) or less may be included in the jet. Even if such bubbles having a diameter of several tens (μm) or less are included in the jet, the movement of the water flow on the surface of the human body can be clearly felt.

  In the above-described embodiment shown in FIGS. 3 and 8, the extending direction of the ejection nozzle 11 is substantially parallel to the water guide shaft 34 which is the rotation axis, and is relative to the moving surface of the ejection nozzle 11 (ejection port 26). The jet angle is constant (about 90 °). That is, the spout 26 moves in position with the rotation of the planetary gear, but the spout jet direction is constant (substantially perpendicular to the moving surface of the spout 26), and the nozzle tip and the bather Even if the distance between them changes, the jet collision area on the human body surface does not change greatly, and the jet can be stably applied to almost the same range, so it is affected by the distance between the nozzle tip and the bather. It is easy to stably obtain a desired acupressure massage feeling.

  Here, as shown in FIG. 2, when the bather sits back on the short side bathtub wall 4 a and takes a relaxing bath, place the buttocks in a position slightly away from the short side bathtub wall 4 a, Since the bathing posture is such that the head is placed on the pillow for the bathtub or the neck, shoulder or part of the back is in contact with the short side bathtub wall 4a, the bather's upper body is naturally the short side bathtub wall At a height that is inclined with respect to 4a and the jet nozzle 11 is installed (230 mm from the bottom surface in the present embodiment), there is approximately 30 to 100 (mm) between the short side bathtub wall 4a and the bather. A gap of a degree is generated. On the other hand, the jet nozzle 11 is composed of at least two or more nozzle components that are detachable from each other. By these nozzle components, a hole or the like opens in the short side bathtub wall 4a. Therefore, the tip of the jet nozzle 11, that is, the jet outlet 26, is approximately 5 to 10 (relative to the short side bathtub wall 4 a. mm) Located inside the bathtub.

  That is, by disposing the jet nozzle 11 on the short side bathtub wall 4a, the distance from the jet outlet 26 to the human body is approximately 20 to 95 (mm), and the bather leans back on the short side bathtub wall 4a. The jet can be accurately applied to a part of the body of the person, and a sufficient acupressure can be given.

  In particular, when bubbles are not mixed in the jet, it becomes a soft stimulus, and the bather is more likely to approach the jet 26 than in the case of a jet with a bubble that gives a strong, linear stimulus. In some cases, the jet 26 is closed with the back. It can happen.

  Therefore, as shown in FIG. 2, if the tip of the jet nozzle 11 protrudes, for example, 10 (mm) from the inner surface of the short side bathtub wall 4a to which the jet nozzle 11 is attached, When the back is exactly along the inner surface of the short side bathtub wall 4a, the business trip part 11a of the jet nozzle 11 feels uncomfortable on the back, so the bather naturally leaves his back away from the short side bathtub wall 4a. It is possible to prevent the spout 26 from being blocked by the bather's back.

  When the protruding length of the tip of the jet nozzle 11 from the inner surface of the bathtub wall is 5 mm or less, the bather is less likely to feel the protruding of the jet nozzle 11 as a touch, and when the protruding length is 30 mm or more, the protruding is The part gets in the way while taking a bath, and the design is also impaired. Therefore, it is desirable to set the protruding length of the tip of the jet nozzle 11 from the inner surface of the bathtub wall between 5 and 30 (mm).

  In the specific example described above, in order to realize a trajectory in which the center of the jet collision portion with respect to the bather moves continuously and repeatedly between the first range a and the second range b while drawing a curve whose curvature changes. The structure in which the spout 26 is moved in a planetary motion is adopted, but the present invention is not limited to this, and the trajectory can also be realized by changing the jet spout angle (spout direction).

  As an example of the configuration for changing the jetting jet angle, there is a configuration in which the jet nozzle 60 is connected to the biaxial stage 53 and swung as shown in FIG.

  The jet nozzle 60 is held by the support body 51 so as to be swingable in two orthogonal axial directions (for example, a vertical direction in FIG. 13 and a direction penetrating the paper surface), and has flexibility to allow the swing. It is connected to the supply flow path of the pressurized bath water through the hose 52. In the jet nozzle 60, a portion in the vicinity of the connection portion with the flexible hose 52 is connected to the biaxial stage 53 via the shaft 56, and the biaxial stage 53 moves in the biaxial direction described above. It swings in the biaxial direction around the portion held by 51.

  When the biaxial stage 53 is moved along a locus that draws an elliptical curve while changing the curvature as illustrated in FIG. 14, the discharge tip locus of the jet nozzle 60 is also as shown in FIG. It moves along a trajectory, and the jet direction from the jet outlet 26 continuously changes accordingly.

  The center of the jet collision part where the jet ejected from the jet port 26 that behaves like this collides against the bather is a trajectory that draws an elliptical curve as illustrated in FIG. The first range a and the second range b are moved continuously repeatedly.

  Also in this specific example, the jet collision part with respect to the bather moves not only to the part to be pushed (first range a) but also to the surrounding area (second range b). A rhythmic feeling that is similar to an actual acupressure massage that repeats the feeling that the pressure acts and the feeling that the pressing force is released, and the jet collision part may move along a trajectory that draws a curved curve It provides a feeling of acupressure massage that moves on the surface of the human body while being pressed naturally with fingers rather than mechanically.

  In addition, when a person actually performs acupressure massage, since the load position is moved while applying a load to the human body surface, the load acting direction on the human body surface is substantially oblique to the human body surface. By changing the jet jet angle as in this specific example, the jet collision point can be moved while applying a jet bundle obliquely to the human body surface, and a shiatsu massage sensation close to the feeling of being actually pressed by a human finger Easy to get.

  FIG. 15 shows another specific example of the configuration for changing the jetting jet angle.

  This jet flow device has a chamber 66 surrounded by a cylindrical body 64, a disk-shaped rotating body 71, and a sealing body 72, and the inside of the chamber 66 is supplied with pressurized bathtub water via a pipe 65. Connected to the road.

  A rotation shaft 62 is passed through the chamber 66 through a bearing seal 63 while ensuring the watertightness of the interior, and the rotation shaft 62 is coupled to the center of the rotating body 71. The rotating shaft 62 is rotatably supported by the bearing seal 63, and the other end side of the rotating shaft 62 is connected to the motor 61 outside the chamber 66.

  The jet nozzle 70 is provided on the outer peripheral side of the rotator 71, and the tip side where the jet port 26 is formed protrudes on the opposite side of the chamber 66. The jet nozzle 70 is provided so as to be swingable with its root portion 67 as a fulcrum. The jet nozzle 70 is connected to a driving device 69 such as an electric motor or an actuator driven by fluid pressure via a connecting member 68 such as a wire or a rod. The driving device 69 is held with respect to the rotating body 71.

  When the connecting member 68 is expanded and contracted by driving the driving device 69, the jet nozzle 70 is drawn toward or away from the driving device 69 via the connecting member 68, so that the jet nozzle 70 has the root portion 67 as a fulcrum. Swing.

  Further, when the rotating body 71 is rotated by driving the motor 61, the jet nozzle 26 moves in a circumferential direction so as to draw a circle on a surface (circular moving surface) substantially perpendicular to the rotating shaft 62. During this movement, the jetting jet angle with respect to the moving surface is changed by the aforementioned swing mechanism.

  The center of the jet collision site where the jet ejected from the jet port 26 which has such behavior collides against the bather is a trajectory that draws a curve with a change in curvature, and the first range a and the first range described above. The range b of 2 is moved continuously and repeatedly.

  When the ejection angle (ejection direction) is changed, the jet flow is caused by a variation in the distance between the jet nozzle and the human body as compared with the case where the ejection angle (ejection direction) is constant as in the configuration shown in FIGS. There is a case where a range of hitting the human body (collision range) is easily changed and a desired acupressure feeling cannot be obtained. Therefore, by measuring the distance between the jet nozzle and the bather and appropriately setting the jet jet angle according to the distance, even when the jet jet angle is changed, the desired acupressure feeling is reliably and stably obtained. It becomes possible.

FIG. 16 shows a jet bath apparatus provided with a distance measuring means and a jet angle setting means.
A distance measuring means 75 such as a laser distance meter, an ultrasonic distance meter, an infrared distance meter, or the like is provided near the jet nozzle 11 in the short side bathtub wall 4a where the jet nozzle 11 is provided.

  A jet angle setting means having a controller 76 and a nozzle angle varying device 77 is provided outside the bathtub body 1. Distance data measured by the distance measuring means 75 is input to the controller 76, and the controller 76 drives the nozzle angle varying device 77 in accordance with the distance data. The nozzle angle varying device 77 is, for example, an electric motor, a fluid pressure driven actuator, or the like, and moves the jet nozzle 11 to change the jet jet angle (jet jet direction).

  If the distance between the inner surface of the short side bathtub wall 4a (the jet nozzle of the jet nozzle 11) and the bather (the distance in the direction substantially parallel to the bottom surface of the bathtub body 1) is X, this distance X is It is obtained by measurement by the distance measuring means 75.

  The jet angle when a line (length X) that is substantially parallel to the bottom surface of the bathtub body 1 and connects the jet port and the bather is used as a reference can be represented by θ in FIG. The first range and the second range, which represent the movement range of the jet collision portion on the human body surface, are defined by the size of (X × tan θ). Assuming θ0 <θm, the ejection angles θ0 and θm in the radius (X × tan θ0) defining the first range and (X × tan θm) defining the second range are appropriately set according to the distance X. Thus, even if the distance X varies, the jet flux can be applied while moving a desired range (first range, second range) on the human body surface, and the human body surface remains pressed with a human finger. A natural acupressure massage feeling that moves up can be surely obtained.

  Further, as shown in FIG. 2, the portion on the front end side of the jet nozzle 11 is protruded from the inner surface of the bathtub wall 4a into the bathtub, and the protruding length of the business trip part 11a is appropriately set, so that the outlet 26 The natural distance between the body and the human body can be made natural to a desired distance (for example, 30 to 80 (mm)), and a natural acupressure massage feeling that moves on the surface of the human body while being pressed by a human finger Obtainable. In this specific example, the business trip part 11a of the jet nozzle 11 functions as an attitude | position control means.

  The posture regulating means for regulating the bather's posture is not limited to the business trip part 11 a of the jet nozzle 11. For example, as shown in FIG. 17, a pillow 101 or spine protruding toward the inside of the bathtub on the upper part of the short side bathtub wall 4a to which the jet nozzle 11 is attached (the part above the jet nozzle 11 attachment position). By providing the abutment 102, the bather is regulated in a desired posture, and a desired interval is naturally formed between the spout 26 and the back or waist of the bather, and the spout 26 is blocked. It is possible to keep a suitable distance to prevent or obtain a feeling of shiatsu.

  FIG. 18 is a schematic diagram showing still another specific example of the posture regulating means.

  In this specific example, the other short-side bathtub wall 4b is opposed to the upper side of the one-side bathtub wall 4a on which the jet nozzle 11 is provided, and the lower side (tub bottom) is opposed to the upper part. An inclined surface 104 that is inclined so as to shorten the distance is provided as a posture regulating means. When the bather leans back on the inclined surface 104, a gap is naturally formed between the tip of the jet nozzle 11 and the bather, and the jet nozzle 26 is prevented from being blocked, and a sense of acupressure is felt. You can keep the proper distance to get.

  According to the study by the present inventors, the lower end of the inclined surface 104 is positioned at a height of about 50 (mm) from the center of the ejection port 26, and the angle θ = 10 to 15 with respect to the vertical line Z passing through the lower end. When the inclined surface 104 is inclined to the outside of the bathtub wall 4a by about °, if the bather leans back along the inclined surface 104, the distance between the tip of the jet nozzle 11 and the back of the bather is 20 to 95 ( mm). The inclined surface 104 is not limited to a flat surface, but may be a curved surface.

  FIG. 19 shows a configuration for realizing the movement trajectory illustrated in FIG. 14 by moving the jet nozzle 80 (jet port 26) using the biaxial stage 53 in a state where the jet jet angle is kept constant. .

  A biaxial stage 53 is provided inside a casing 85 held by the bathtub wall 4 a, and a jet nozzle 80 is connected to the biaxial stage 53 via a shaft 54 and a pipe 83. A jet nozzle 80 is provided at the tip of the pipe 83, and the jet outlet 26 faces the inside of the bathtub. The other end side of the pipe 83 is connected to the flexible hose 82, and the flexible hose 82 is connected to the water conduit 81 of the pressurized bathtub water sent from the pump 7 described above.

  The jet nozzle 80 and the pipe 83 are moved integrally with the biaxial stage 53 in the casing 85. In order to allow this movement, the jet nozzle 80 and the pipe 83 are provided outside the casing 85 via the flexible hose 82. Connected to the water guide pipe 81. The angle of the jet nozzle 80 relative to the moving surface, that is, the jet jet angle θ is kept constant.

  In FIG. 19, the trajectory of the biaxial stage 53 viewed from the lateral direction is a trajectory that draws an elliptical curve as illustrated in FIG. 14, and therefore the jet outlet 26 also moves along the trajectory shown in FIG. As a result, the center of the jet collision part where the jet ejected from the jet outlet 26 collides with the bather is the locus shown in FIG. 14, and the first range a and the second range are the same as in the above-described embodiment. The range b is continuously and repeatedly moved.

The schematic plan view showing schematic structure of the jet bath apparatus which concerns on embodiment of this invention. The schematic diagram which looked at the bathtub main body from the side surface direction in the same jet bath apparatus. The schematic diagram which illustrates the structure of the jet apparatus which has a mechanism which moves the jet nozzle and its position in the jet bath apparatus which concerns on embodiment of this invention. The schematic diagram which shows the detail of the connection structure part of the water guide shaft and piping in the structure of FIG. The schematic diagram which illustrates the movement locus | trajectory of the planetary gear (jet outlet) in the structure of FIG. The schematic diagram which illustrates the movement locus | trajectory of the center of the jet collision site | part in the structure of FIG. In the jet bath apparatus concerning the embodiment of the present invention, the mimetic diagram for explaining the conditions where a part of jet having a thickness of about 2 Rn is always within the first range. The schematic diagram showing the other specific example of the jet apparatus which has a mechanism which moves the jet nozzle and its position in the jet bath apparatus which concerns on embodiment of this invention. The schematic diagram which illustrates the movement locus | trajectory of the center of the jet collision site | part in the structure of FIG. The schematic diagram showing the case where the movement locus | trajectory of the center of a jet collision site | part does not enter in the 1st range. When the radius r1 of the planetary gear in FIG. 3 is less than or equal to half the radius r2 of the outer ring (r1 ≦ (r2 / 2)), the locus of the center of the jet collision site repeats the first range and the second range. The schematic diagram for demonstrating the conditions to come and go. When the radius r1 of the planetary gear in FIG. 8 is larger than half the radius r2 of the outer ring (r1> (r2 / 2)), the locus of the center of the jet collision site repeats the first range and the second range. The schematic diagram for demonstrating the conditions to come and go. The schematic diagram showing the structure which changes a jet jet angle in the jet bath apparatus which concerns on embodiment of this invention. The schematic diagram which illustrates the movement locus | trajectory of the center of the jet collision site | part in the structure of FIG. The schematic diagram showing the other specific example of the structure which changes a jet jet angle in the jet bath apparatus which concerns on embodiment of this invention. The schematic diagram showing the structure which provided the distance measurement means and the ejection angle setting means in the jet bath apparatus which concerns on embodiment of this invention. The schematic diagram showing the structure which provided the attitude | position control means in the jet bath apparatus which concerns on embodiment of this invention. The schematic diagram showing the structure which provided the other attitude | position control means in the jet bath apparatus which concerns on embodiment of this invention. The schematic diagram showing the specific example which moved the jet nozzle using the biaxial stage in the state which kept the jet jet angle constant in the jet bath apparatus which concerns on embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Bathtub main body, 5 ... Inlet, 7 ... Pressurization apparatus (pump), 11 ... Jet nozzle, 26 ... Jet, 11a, 101, 102, 104 ... Posture control means

Claims (13)

A bathtub body having a bath water inlet formed in the bathtub wall;
A pressurizing device for sucking and pressurizing bath water from the suction port;
A jet nozzle having a jet outlet for jetting the bathtub water sent from the pressurizing apparatus into the bathtub water stored in the bathtub body;
The jet nozzle moves the first range and the second range surrounding the first range in a repeated manner while the center of the jet collision portion with respect to the bather draws a curve with a changing curvature. A jet bath apparatus characterized by jetting a jet to draw a trajectory. The first range is within a circle of a first circle;
The second range is a range that is inside the second circle that shares the center with the first circle and has a larger diameter than the first circle, and excludes the inside of the circle of the first circle. The jet bath apparatus according to claim 1.   The jet bath according to claim 2, wherein R2-R1 <Rn, where R1 is the radius of the first circle, R2 is the radius of the second circle, and Rn is the radius of the outlet. apparatus.   The jet nozzle is provided so as to be movable within a preset circular moving surface, and the jet port moves in the circumferential direction within the moving surface in a state in which the jet angle relative to the moving surface is kept constant. The jet bath device according to any one of claims 1 to 3, wherein the jet bath device also moves in a radial direction.   The ejection port is provided so as to be movable within a preset circular moving surface, and the ejection port moves in the circumferential direction within the moving surface while changing a jet ejection angle with respect to the moving surface. The jet bath apparatus according to any one of claims 1 to 3.   The said jet nozzle is provided so that rocking | fluctuation is possible, and a jet stream is jetted from the said jet outlet, changing a jet jet angle by rocking | fluctuation of the said jet nozzle. Jet bath equipment.   The jet port is provided so as to be movable in a preset moving plane, and the jet port moves in the moving plane in a state where a jet jet angle with respect to the moving plane is kept constant. Item 4. A jet bath apparatus according to any one of Items 1 to 3.   Distance measuring means for measuring the distance between the bath wall inner surface provided with the jet nozzle and the bather, and a jet angle setting means for setting the jet jet angle according to the measurement result of the distance measuring means. The jet bath apparatus according to claim 5 or 6, wherein   The jet bath apparatus according to claim 5 or 6, further comprising a posture regulating means for regulating a bather's posture, which is provided on a bathtub wall provided with the jet nozzle.   The jet bath device according to claim 9, wherein the posture regulating means is a business trip part of the jet nozzle protruding from the inner surface of the bathtub wall into the bathtub.   The said attitude | position control means is an inclined surface provided in the upper part rather than the said jet nozzle installation site | part in the said bathtub wall, and was inclined so that the distance with the opposing bathtub wall might become short as it went below. The jet bath apparatus according to 9 or 10.   The jet bath apparatus according to claim 9 or 10, wherein the posture regulating means is a backrest provided on the bathtub wall.   The jet bath apparatus according to claim 9 or 10, wherein the posture regulating means is a pillow provided on the bathtub wall.

Images