JP5895516B2 - Nozzle device for jet bath - Google Patents

Description

  The present invention relates to a nozzle device for a jet bath for jetting while rotating a hot water jet into hot water in a bathtub.

  As this type of conventional jet bath nozzle device, the one described in Patent Document 1 is known.

Japanese Patent No. 3314161

  The nozzle device described in Patent Document 1 is a rotation in which the outer shape is substantially circular, a shaft is disposed at the axial center position thereof, and a jet hole is provided therein, and the jet port of the jet hole is eccentric from the axial position. A nozzle body, an orifice disposed behind the rotary nozzle body and spraying hot water in a bathtub into a jet hole of the rotary nozzle body at a predetermined pressure, and a jet port disposed in front of the jet port of the rotary nozzle body A cover, holding the shaft of the rotary nozzle body at least one of the orifice and the jet cover, and rotating the rotary nozzle body around the shaft with a water flow jetted from the orifice. It is comprised so that the injection direction of the water flow injected may be changed.

  The spout cover is formed of a ring-shaped base (outer ring portion) and three rod-shaped support portions (spoke portions) so as not to obstruct the jet of water from the spout on the front side of the nozzle body. A large opening is formed.

  In the conventional nozzle device described above, the water flow is ejected from the jet hole while the rotary nozzle body rotates, but by providing three support portions, the support portion is resistant to the water flow when the jet hole passes through the support portion. As a result, a temporal change is caused in the momentum of the water flow, and this makes it possible for the bather to feel a sense of intermittent water flow.

  However, since a large opening is formed between the three support portions so as not to interfere with the jetted water flow, the bather puts his / her finger through the opening during bathing to the rotating nozzle body that is rotating. It is easy to touch, especially when young infants and children with relatively small hands touch the rotating part, there is a risk that the finger may be caught between the rotating nozzle body and the jet cover.

  By covering a large opening with a metal mesh made of a relatively thin metal wire, the above-mentioned danger can be avoided so as not to cause resistance to water flow, but the increase in the number of parts and the assembling workability deteriorate, and the manufacturing cost is reduced. It will increase significantly.

  In addition, when a partition beam that simply subdivides the large opening of the spout cover is integrally formed, a certain cross-sectional area is required to ensure the strength of the partition beam above a certain level. Thus, the straightness and momentum of the water flow are reduced, and the intermittent hit feeling as described above disappears.

  Therefore, the present invention prevents the insertion of a finger up to the rotary nozzle body by subdividing the opening of the spout cover with the fin, and optimizes the cross-sectional shape of the fin to thereby reduce the thickness of the fin. It aims at providing the nozzle apparatus for jet baths which can reduce the resistance with respect to the water flow by and can ensure the touch feeling of an intermittent water flow.

  In order to achieve the above object, the present invention takes the following technical means.

That is, the present invention includes a rotary nozzle body provided with a jet hole and a nozzle cover disposed on the front side of the rotary nozzle body, and the axis of the jet hole is the axis of rotation of the rotary nozzle body. The jet hole is provided around the rotation axis of the rotary nozzle body and circulates around the rotation axis as the rotary nozzle rotates, and the nozzle cover extends from the jet hole. In the jet bath nozzle device, comprising: an opening for passing a jet of water flow; and a spoke part that divides the opening into a plurality of regions arranged around the rotation axis of the rotary nozzle body. includes a fin portion that further subdivide each divided region, the side surface of the fin portions of each divided region is made with the guide surface along the direction of the water flow ejected from the jet hole in a position corresponding to the divided region ,to this Directivity that guides the water flow in different directions is given to each divided region, and when the jet hole moves from one divided region to the adjacent divided region, the water flow injected from the jet hole has directivity. The current is divided into two divided regions different from each other (claim 1). Note that the fact that the jet hole is at a position corresponding to the divided area means that the axis is located near the center of the divided area in the circumferential direction, and the axis of the jet hole is located around the divided area. It is not always required that the side surface of the fin portion be in the direction of the axial center of the jet hole when positioned near the direction end. Further, the side surface of the fin portion is a plane parallel to the axis of the jet hole, and the jet hole in the cross-sectional shape of the fin portion having a plane including a straight line orthogonal to the direction in which the fin portion extends in a front view. It only has to be along the axis. Furthermore, the entire side surface of the fin portion does not need to be along the axis of the jet hole, and the side surface of the main portion of the fin portion may be configured as described above.

  According to the jet bath nozzle device of the present invention, since the divided region between the spoke portions is further subdivided into smaller slits by the fin portions, the bather's finger is drawn from the subdivided slits. Insertion into the heel side can be prevented by the fin portion. Further, since the side surface of the fin portion facing each slit is inclined along the direction of the water flow from the jet hole when the jet hole circulates at a position corresponding to the divided region, the jet is injected from the jet hole. The water flow is smoothly guided by the fin portion, the resistance to the water flow due to the provision of the fin portion can be reduced as much as possible, and the straightness and momentum of the water flow from the jet hole at the position corresponding to the divided area Can be secured. In addition, the inclination directions of the fin portions of the adjacent divided areas are different directions, and the directivity for guiding the water flow in the different directions is given to the adjacent divided areas, but the divided areas having the jet holes are provided. Since the water flow injected from the jet hole is divided into two divided regions with different directivities when moving from one to the adjacent divided regions, the water flow momentum is reduced as a whole, and thus the water flow momentum is reduced. It is possible to give a moderate intermittent hit feeling to the bather.

  The spoke portion can extend radially outward from the rotational axis position of the rotary nozzle body in the radial direction. It is preferable that the fin portion extends in a direction intersecting with the direction facing radially outward from the rotational axis position of the rotary nozzle body.

In the nozzle device for a jet bath according to the present invention, the side surface facing the divided region adjacent to the opposite side of the rotation direction of the rotating nozzle body of each spoke portion is in the axial direction of the jet hole in a position corresponding to the divided region And an inclined surface with respect to the axial direction of the jet hole located on the back side of the spoke portion . According to this, it becomes possible to further reduce the resistance to the water flow injected from the jet holes located at the positions corresponding to the respective divided regions. On the other hand, since the width of the spoke portion becomes relatively large due to the presence of the inclined surface, when the jet hole is located on the back side of the spoke portion, the resistance to the water flow of the spoke portion increases, and a more intermittent contact feeling is obtained. Can be improved.

  The nozzle cover further includes a fulcrum portion that contacts and supports the rotation center point of the rotary nozzle body, and a ring portion that defines an outer periphery of the opening, and the spoke portion includes a fulcrum portion and a ring portion. It is preferable that the fin portion is constructed between the spoke portion and the ring portion (Claim 3). According to this, a fulcrum part, a ring part, a spoke part, and a fin part can be provided, and it can be integrally formed with a resin material, and it can aim at cost reduction and can provide a structure excellent in design nature. In addition, it is preferable that a spoke part divides the opening part of a nozzle cover at equal intervals.

  In addition, an even number of the jet holes may be provided, and an odd number of the divided regions may be provided. According to this, when one jet hole is located at a position corresponding to one divided area, another jet hole is located at a position not corresponding to the divided area. It is possible to give a pleasant touch of water flow. The jet holes and the divided regions are preferably provided at equal intervals in the circumferential direction.

  As described above, according to the jet bath nozzle device according to claim 1 of the present invention, the divided region between the spoke portions is further subdivided into smaller slits by the fin portions. The fin portion can prevent the bather's finger from being inserted into the heel side through the formed slit. Further, since the side surface of the fin portion facing each slit is inclined along the direction of the water flow from the jet hole when the jet hole circulates at a position corresponding to the divided region, the jet is injected from the jet hole. The water flow is smoothly guided by the fin portion, the resistance to the water flow due to the provision of the fin portion can be reduced as much as possible, and the straightness and momentum of the water flow from the jet hole at the position corresponding to the divided area Can be secured. In addition, the inclination directions of the fin portions of the adjacent divided areas are different directions, and the directivity for guiding the water flow in the different directions is given to the adjacent divided areas, but the divided areas having the jet holes are provided. Since the water flow injected from the jet hole is divided into two divided regions with different directivities when moving from one to the adjacent divided regions, the water flow momentum is reduced as a whole, and thus the water flow momentum is reduced. It is possible to give a moderate intermittent hit feeling to the bather.

  Moreover, according to the nozzle apparatus for jet baths concerning Claim 2 of this invention, it becomes possible to further reduce the resistance with respect to the water flow injected from the jet hole in the position corresponding to each division area. On the other hand, since the width of the spoke portion becomes relatively large due to the presence of the inclined surface, when the jet hole is located on the back side of the spoke portion, the resistance to the water flow of the spoke portion increases, and a more intermittent contact feeling is obtained. Can be improved.

  Moreover, according to the nozzle apparatus for jet baths concerning Claim 3 of this invention, it can be integrally formed with a resin material provided with a fulcrum part, a ring part, a spoke part, and a fin part, and it can aim at cost reduction. At the same time, a structure with excellent design can be provided.

  Further, according to the nozzle device for a jet bath according to claim 4 of the present invention, when one jet hole is at a position corresponding to one divided area, the other jet hole is at a position not corresponding to the divided area. Therefore, variations occur in the water flow as a whole, and it is possible to give the bather a comfortable feeling of water flow.

It is a whole perspective view of the nozzle apparatus for jet baths concerning one embodiment of the present invention. It is a disassembled perspective view of the same nozzle device. It is AA arrow sectional drawing of FIG. It is a BB arrow directional cross-sectional view of FIG. It is a front view of the nozzle cover of the nozzle device. It is CC sectional view taken on the line of FIG. It is DD sectional view taken on the line in FIG.

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

  FIGS. 1-7 has shown the nozzle apparatus 1 for jet baths concerning one Embodiment of this invention, this nozzle apparatus 1 is attached to the side wall of a bathtub, and circulates the hot water in a bathtub with a suitable pump apparatus. While generating a jet in the bathtub.

  The nozzle device 1 of the present embodiment includes a discharge pipe 4 provided with an orifice 3 disposed on the back side of a side wall of a bathtub, a nozzle holder 5 attached and fixed to the front side of the discharge pipe 4, and the nozzle A rotating nozzle body 6 accommodated in the holder 5 and a nozzle cover 7 for holding the rotating nozzle body 6 in the nozzle holder 5 are provided.

  The discharge pipe 4 includes a cylindrical outer cylinder portion 8 that is open on the front side and closed on the back side, an inner cylinder portion 9 that is concentrically disposed on the outer cylinder portion 8 and has a smaller diameter than the outer cylinder portion 8; A hot water supply pipe section 10 communicating with the inner cylinder section 9 and an air supply pipe section 11 provided in the outer cylinder section 8 so as to communicate with the space between the outer cylinder section 8 and the inner cylinder section 9 are provided. It is integrally formed of a resin material. The hot water supply pipe part 10 and the inner cylinder part 9 present an elbow pipe connected at a substantially right angle. The orifice 3 is composed of a cylindrical member and is detachably screwed to the inner cylinder portion 9, and the front side end portion of the outer cylinder portion 8 extends to the front side rather than the front side end portion of the orifice 3. Has been.

  The nozzle holder 5 is provided with a cylindrical accommodating cylinder portion 12 that covers the outer peripheral side of the rotary nozzle body 6, and the accommodating cylinder portion 12 is inserted into an attachment hole provided in the bathtub side wall from the side wall front side, and the discharge pipe 4. The outer cylinder portion 8 is screwed. Further, the nozzle holder 5 includes a flange portion 12a provided at the front side end portion of the accommodating cylinder portion 12, while the flange portion 8a is similarly provided at the front side end portion of the outer cylinder portion 8, The nozzle device 1 is configured to be attached and fixed to the side wall by sandwiching the side wall between the flange portions 8a and 12a via the packing 14 and the gasket 15. A receiving portion 16 having a diameter larger than that of the orifice 3 and having a concentric flow hole with respect to the orifice 3 is provided at the rear side end portion of the housing cylinder portion 12. A gap for air introduction is formed between the receiving portion 16 and the orifice 3 and is supplied from the air supply pipe portion 11 by the negative pressure of the hot water jet injected from the orifice 3 into the nozzle holder 5. The air is drawn through the space between the outer cylinder portion 8 and the inner cylinder portion 9 and can be injected as a mixed jet mixed with air.

  The rotary nozzle body 6 has a truncated cone shape as a whole, is rotatably accommodated in the accommodating cylinder portion 12 of the nozzle holder 5, and is provided concentrically with the orifice 3. On the back surface of the rotary nozzle body 6, a recess 6a into which a jet flow ejected from the orifice 3 is introduced is formed. The rotating nozzle body 6 is provided with a jet hole 17 that communicates from the back side to the front side. A plurality of jet holes 17 are provided, particularly two in this embodiment, and each jet hole 17 is formed in the recess 6a on the back side. The two jet holes 17 are provided at symmetrical positions with respect to the axial center of the rotary nozzle body 6, and the axial center X of each jet hole 17 is directed outward in the axial direction from the back side to the front side. (Refer to FIG. 3) Further, the rotation nozzle body 6 is formed so as to face in the direction opposite to the rotation direction from the rear side to the front side (see FIG. 4). The back surface of the rotary nozzle body 6 is supported from the back side by the receiving portion 16 of the nozzle holder 5, and the inner peripheral edge of the receiving portion 16 protrudes from the front side, and the protruding portion 16a is formed in the recess 6a. It is fitted. A concave portion 6 b is formed in the axial center portion of the front surface of the rotary nozzle body 6.

  As shown in detail in FIG. 5 to FIG. 7, the nozzle cover 7 is screwed into the front side end portion of the accommodating cylinder portion 12 of the nozzle holder 5 and has an opening through which the water flow ejected from the rotating nozzle body 6 flows out. An annular mounting ring portion 20 to be formed, a fulcrum portion 21 that abuts and supports the rotation center point of the rotary nozzle body, and is constructed between the fulcrum portion 21 and the mounting ring portion 20 and is radially extending from the fulcrum portion 21. Five long frame-like spoke portions (support portions) 22 that extend radially outward and the openings partitioned into a plurality of divided regions by the plurality of spoke portions 22 into smaller slits. A plurality of long cross-shaped fin portions 23 that are subdivided are integrally formed of a resin material. With the nozzle cover 7, the opening is partitioned by five spoke portions 22 into five fan-shaped divided regions arranged around the rotation axis of the rotary nozzle body 6 at equal intervals. In addition, the inscribed circle of each divided region has substantially the same size as the jet hole 17.

  The fulcrum part 21 is constituted by a convex part protruding toward the back side, and the fulcrum part 21 abuts in a concave part 6 b provided at the front center of the rotary nozzle body 6.

  Each fin portion 23 is laid between the spoke portion 22 and the ring portion 20 that define the opposite end of the nozzle rotation direction R of the divided region to which the fin portion 23 belongs, and the nozzle rotation of the divided region to which the fin portion 23 belongs. It is disposed in parallel to the spoke portion 22 that defines the positive end of the direction R.

  Moreover, the both sides | surfaces which face the said slit of the fin part 23 of each division area are guide surfaces along the direction of the water flow ejected from the jet hole 17-A (refer FIG. 5) in the position corresponding to the said division area, and Has been made. That is, as described above, the jet hole 17 of the rotary nozzle body 6 is formed so as to face outward in the axial direction from the back side to the front side and in the direction opposite to the rotation direction of the rotary nozzle body 6. However, the cross-sectional shape of the fin part 23 is made into a shape with little resistance with respect to the water flow injected from the jet hole 17. The direction of the inclination of the guide surface is such that the jet hole 17-located in the center of the divided area is such that the resistance of the fin portion 23 to the water flow becomes the smallest when the jet hole 17 is located in the center of the divided area. In the cross-sectional shape of the fin portion 23 having a plane parallel to the axis of A and including a straight line extending in a direction perpendicular to the longitudinal direction (extending direction) of the fin portion 23, the fin portion 23 The inclination direction of the side surface of the portion 23 is substantially parallel to the axial direction of the jet hole 17-A.

  The spoke part 22 has a comparatively larger cross-sectional area than the fin part 23, and as shown in FIG. 6, the side surface 22a which faces the division area adjacent to the rotation direction main body 6 reverse side of each spoke part 22 is shown. Is an inclined surface along the axial direction of the jet hole 17 at a position corresponding to the divided region. On the other hand, the side surface 22 b opposite to the side surface 22 a is formed in parallel to the rotational axis of the rotary nozzle body 6.

  In addition, the side surface of the longitudinal direction both ends of the fin part 23 and the spoke part 22 is made into the circular arc surface connected smoothly to the inner surface of the ring part 20. FIG. Further, the tightening rotation direction when the nozzle cover 7 is screwed and the rotation direction of the rotary nozzle body 6 during operation of the apparatus are made to coincide with each other, thereby preventing the nozzle cover 7 from loosening and falling off during operation. doing.

  Next, operation | movement of the nozzle apparatus 1 for jet baths of this embodiment is demonstrated. By operating a pump device (not shown), a predetermined flow rate of hot water supplied to the hot water supply pipe section 10 of the discharge pipe 4 becomes a predetermined pressure at the orifice 3 and is discharged into the back side recess 6 a of the rotary nozzle body 6. The At this time, it is mixed with the air supplied from the air supply port 11 to the space between the outer cylinder part 8 and the inner cylinder part 9 to become a mixed jet, and this mixed jet further passes through the jet hole 17 of the rotary nozzle body 6. It is injected into the bathtub through.

  At this time, since the jet hole 17 shifts the opening position of the opening on the back side and the opening on the front side in the circumferential direction and provides a twist with respect to the surface of the rotating nozzle body 6, hot water passes through the jet hole 17. When injected into the bathtub, a moment for rotating the rotary nozzle body 6 is applied by the reaction force of the injection. Further, the center of the front surface of the rotary nozzle body 6 is pressed against the fulcrum portion 20 by the pressure of the jet flow from the orifice 3 acting on the back side of the rotary nozzle body 6, and thus the rotary nozzle body 6 is point-supported from the front surface. In this state, the pressure of the jet is applied to the back surface, and the rotating nozzle body 6 is aligned by rotating the rotating nozzle body 6 by the above-described moment. Therefore, the axial center position where the rotating nozzle body 6 is fixed. The rotating nozzle body 6 can be smoothly rotated with a constant axis by the pressure balance of the jet flow, etc., without having to provide a shaft to be held at. It can be rotated. Further, since the shaft support structure is not required on the orifice 3 side, the structure of the orifice 3 can be simplified, and the jet flow injected from the orifice 3 can be made uniform.

  Further, both side surfaces of the fin portion 23 and one side surface of the spoke portion 22 constituting each divided region are configured by inclined surfaces that are inclined in a direction along the axis of the jet hole 17 at a position corresponding to the divided region. Therefore, when the jet hole 17 is at a position corresponding to the divided region, the resistance of the water flow injected from the jet hole 17 is small, and the straightness and the momentum of the water flow can be secured, while the two jet holes 17 are adjacent to each other. When located between the divided regions, the water flow from the jet holes 17 is divided into two divided regions having different guide directions, and the spoke portion 22 having a relatively large cross-sectional area acts as a resistance against the water flow, As a result, the momentum and straightness of the water flow are greatly reduced, so that the strength of the water flow can be clearly expressed over time, and the bather can be given a sense of intermittent water flow.

<Other embodiments>
The present invention is not limited to the above-described embodiment, and the design can be changed as appropriate. For example, in the above embodiment, the fulcrum part is a convex part and the concave part corresponding to the convex part is provided in the rotary nozzle body, but the convex part corresponding to the fulcrum part may be provided in the rotary nozzle body. Moreover, in the said embodiment, although the nozzle apparatus which injects a mixed jet with air was illustrated, the nozzle apparatus which injects the jet of only the hot water which does not mix air may be sufficient. In addition, each fin portion may be installed between a spoke portion and a ring portion that define an end portion on the positive side in the nozzle rotation direction of a divided region to which the fin portion belongs, and extends in a direction parallel to the diameter direction. It may be provided, and may be circular arc shape extended in the peripheral direction in front view.

DESCRIPTION OF SYMBOLS 1 Nozzle apparatus for jet baths 6 Rotating nozzle body 7 Nozzle cover 17 Jet hole 20 Ring part 21 Support point part 22 Spoke part 23 Fin part

Claims (4)

A rotary nozzle body provided with a jet hole, and a nozzle cover disposed on the front side of the rotary nozzle body, the axis of the jet hole being inclined with respect to the rotation axis of the rotary nozzle body The jet hole is provided around the rotation axis of the rotary nozzle body and circulates around the rotation axis as the rotary nozzle rotates, and the nozzle cover allows the water flow ejected from the jet hole to pass therethrough. In a jet bath nozzle device comprising an opening and a spoke that divides the opening into a plurality of regions arranged around the rotation axis of the rotary nozzle body,
The nozzle cover includes a fin portion that further subdivides each divided region, and a side surface of the fin portion of each divided region is a guide surface along a direction of water flow ejected from the jet hole located at a position corresponding to the divided region. As a result, directivity for guiding the water flow in different directions is given to the adjacent divided regions, and when the jet hole moves from one divided region to the adjacent divided region, the jet is injected from the jet hole. A nozzle device for a jet bath, wherein the water flow is divided into two divided regions having different directivities . 2. The jet bath nozzle device according to claim 1, wherein the side surface of each spoke portion facing the divided region adjacent to the rotation direction opposite side of the rotating nozzle body is located at a position corresponding to the divided region. A nozzle device for a jet bath characterized by being a surface along the center direction and an inclined surface with respect to the axial direction of the jet hole located on the back side of the spoke portion .   3. The jet bath nozzle device according to claim 1, wherein the nozzle cover further includes a fulcrum portion that contacts and supports a rotation center point of the rotary nozzle body, and a ring portion that defines an outer periphery of the opening portion. A nozzle for a jet bath, wherein the spoke part is constructed between a fulcrum part and a ring part, and the fin part is constructed between the spoke part and the ring part apparatus.   4. The nozzle device for a jet bath according to claim 1, 2, or 3, wherein the even number of the jet holes are provided and the odd number of the divided regions are provided.

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