JP4760700B2 - Connecting member for circulation of jet bath - Google Patents

Description

  The present invention relates to a connection member for circulation of a jet bath (a bathtub with a bubble ejection function).

  As a connection member for circulation (see, for example, Patent Document 1) provided in a jet bath, that is, a bathtub provided with a bubble ejection device, for example, a member having a filter function for capturing hair loss or the like is known.

  Such a connection member for circulation forms a through hole in the bathtub wall, and the opening of the housing (pipe 19 for hot water suction 19 in Patent Document 1) having an opening from the outside of the tank of the through hole is formed in the through hole of the bathtub wall. In this state, the periphery of the opening of the housing is brought into contact with the outer surface of the tank around the through hole via a packing. From the inside of the tank of the through hole, the cylinder part of the flange member (bush 21 in Patent Document 1) including the cylinder part and the flange part is inserted into the opening of the housing through the through hole, and the inside of the cylinder part and the suction flow path And the flange portion is brought into contact with the inner surface of the tank around the through hole via the packing, and is fixed in a state where the bathtub wall is sandwiched between the housing and the flange member. The flange member is provided with a cap member (safety cover 23 in Patent Document 1) for preventing foreign matter from entering.

  The cap member is formed with a large number of fine holes (opening 27 in Patent Document 1) to prevent foreign matter from being mixed, and covers the flange member.

By the way, such a cap member is attached so as to cover the flange member. However, if a gap is formed between the edge of the cap member and the bathtub wall, a loss occurs in the suction function, and suction efficiency is increased. Was low.
JP 9-313372 A

  This invention is made | formed in view of said point, The place made into the objective makes it a subject to provide the connection member for the circulation of a jet bath with sufficient suction efficiency.

In order to solve the above problem, in the invention according to claim 1, the opening 10 of the housing 1 having the opening 10 communicating with the suction flow path 15 of the bath water 92 is communicated with the through hole 20 of the bathtub wall 2. A flange member comprising a cylindrical portion 41 and a flange portion 42 from the inner side of the bath wall of the bathtub wall 2 with the periphery of the opening 10 of the housing 1 being brought into contact with the outer surface of the bath 21 around the through hole 20 via the outer packing 3. The four cylindrical portions 41 are inserted into the opening 10 of the housing 1 through the through holes 20 to communicate the inside of the cylindrical portion 41 and the suction flow path 15, and the flange portion 42 is connected to the through hole 20 via the inner packing 5. A front lid 71 which is fixed in a state where the bathtub wall 2 is sandwiched between the housing 1 and the flange member 4 by being brought into contact with the inner surface 22 of the tank around the front, and the front lid formed with a discharge port 70 in a substantially central portion. Foreign matter provided continuously from the periphery of the portion 71 In the connection member for circulation of a jet bath in which the cap member 7 including the side cylinder portion 72 formed with a large number of fine holes 73 for preventing entry is placed on the flange portion 42 of the flange member 4, the bath water 92 is the cap member. 7. Inner packing that fills the gap S and prevents the bath water 92 from being sucked in order to prevent suction from the gap S between the cap member 7 and the bathtub wall 2 without passing through the fine holes 73 of the seventh. 5 is provided with a blocking member 8 different from 5 .

With such a configuration, the gap S between the cap member 7 and the bathtub wall 2 is filled by the blocking member 8 different from the inner packing 5, and the bath water sucked from the gap S with low efficiency. 92 is eliminated, and the suction efficiency can be improved by being sucked only through the fine holes 73, and when the gap S between the cap member 7 and the bathtub wall 2 has been formed, Foreign matter such as hair is prevented from being sucked and clogged.

In the invention according to claim 2, in the invention according to claim 1, the bath water 92 does not pass through the fine holes 73 of the cap member 7, and the side cylinder portion 72 of the cap member 7 and the flange member 4. The side tube portion 72 of the cap member 7 and the flange portion 42 of the flange member 4 are internally fitted to prevent inhalation from the gap S between the flange portion 42 and the flange portion 42. is there.

With such a configuration, the gap S between the side cylinder portion 72 of the cap member 7 and the flange portion 42 of the flange member 4 is filled by the inner fitting, and suction is performed from the gap S with low efficiency. The bath water 92 is eliminated, and the suction efficiency can be improved by being sucked only through the fine holes 73 .

Further, in the invention according to claim 3, the opening 10 of the housing 1 having the opening 10 communicating with the suction flow path 15 of the bath water 92 is communicated with the through hole 20 of the bathtub wall 2, and the housing 1. The periphery of the opening 10 is brought into contact with the outer surface 21 of the tank around the through hole 20 via the outer packing 3, and the cylinder part 41 of the flange member 4 including the cylinder part 41 and the flange part 42 from the tank inner side of the bathtub wall 2. Is inserted into the opening 10 of the housing 1 through the through hole 20 to connect the inside of the cylinder portion 41 and the suction flow path 15, and the flange portion 42 is disposed inside the tank around the through hole 20 through the inner packing 5. The front lid 71 is fixed in a state in which the bathtub wall 2 is sandwiched between the housing 1 and the flange member 4 by being brought into contact with the surface 22 and the peripheral edge of the front lid 71 from which the discharge port 70 is formed at a substantially central portion. Eyes are connected to prevent contamination In the connection member for circulation of a jet bath in which the cap member 7 formed of the side cylinder portion 72 formed with a large number of paddle holes 73 is placed on the flange portion 42 of the flange member 4, the bath water 92 is a fine hole in the cap member 7. In order to prevent inhalation from the gap S between the cap member 7 and the bathtub wall 2 without passing through 73, a blocking member 8 is provided to fill the gap S and prevent the bath water 92 from being sucked. Serves as a blocking member 8 and is characterized in that the thickness of the portion contacting the cap member 7 is made thinner than the thickness of the portion contacting the flange member 4 of the inner packing 5.

With such a configuration, the gap S between the cap member 7 and the bathtub wall 2 is filled with the inner packing 5 that also serves as the blocking member 8, and the bath water 92 that is sucked in from the gap S with low efficiency. Is eliminated, and the suction efficiency can be improved by sucking only through the fine holes 73, and when the gap S between the cap member 7 and the bathtub wall 2 is formed, the hair is put into the gap S. It is possible to prevent clogging of foreign substances such as the like. Further, since the inner packing 5 also serves as the blocking member 8, the functions of the inner packing 5 and the blocking member 8 are achieved by a single member. Further, the thickness of the portion of the inner packing 5 that contacts the flange member 4 is made thinner than the portion of the inner packing 5 that contacts the flange member 4. Since it spreads, the sealing property with the cap member 7 is improved.

  In addition to the basic effect of preventing inhalation of foreign substances such as hair, the present invention prevents inhalation from other than the bath water suction port by the blocking member, so there is little loss during inhalation (loss of energy), The effect that the suction efficiency can be improved is obtained.

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

  First, the entire jet bath will be described. As shown in FIG. 3, there is a bathtub 91, and a pump 94 for sucking and discharging the bath water 92 in the bathtub 91 through a pipe 93 is installed outside the bathtub 91. One end of the pipe 93 is connected to the pump 94, and the other end is connected to a connection member for circulation installed in the bathtub 91. The pipe 93 includes a suction pipe 93a and a discharge pipe 93b, and the suction pipe 93a and the discharge pipe 93b constitute a circulation pipe 93. The connecting member for circulation of the jet bath according to the present invention is mainly composed of the housing 1, the packing, the flange member 4, and the cap member 7 provided at the connecting portion of the pipe 93 to the bathtub 91. The following description is based on each embodiment.

  A first embodiment will be described with reference to FIGS. 1 and 2.

  The connection member for circulation of the jet bath of this embodiment includes a housing 1, an outer packing 3, an inner packing 5, a blocking member 8, a flange member 4, a guide member 6, and a cap member 7.

  The housing 1 has a substantially cylindrical outer cylinder portion 11, and a flange-like portion 12 is continuously provided from the edge of the opening 10 at one end thereof, and the inner cylinder portion 13 is provided inside the outer cylinder portion 11. It has a double cylinder structure. The inside of this double cylinder structure, that is, the inside of the inner cylinder part 13 becomes the discharge flow path 14, and the outside of the double cylinder structure, that is, the outside of the inner cylinder part 13 and the inside of the outer cylinder part 11 is sucked. This is the flow path 15. An internal thread 11 a is formed on the inner surface of the outer cylinder portion 11. In addition, an air suction pipe 16 is provided to connect the outside and the suction flow path 15 in the inner cylinder portion 13, and air is mixed into the bath water 92 of the discharge flow path 14 via the air suction pipe 16. The bath water 92 in which bubbles are mixed is discharged from the downstream end of the discharge flow path 14.

  The housing 1 communicates an opening 10 at one end of the outer cylinder portion 11 with a through hole 20 formed in the bathtub wall 2, and a flange-like portion 12 around the opening 10 of the housing 1 is connected to a tank of the bathtub wall 2. The outer surface 21 is brought into contact with the portion around the through hole 20 via the outer packing 3. The outer packing 3 has an annular shape arranged around the through hole 20 of the bathtub wall 2, and a protrusion 31 having a deformability for improving the sealing performance is projected on the surface in contact with the bathtub wall 2. In addition, a cover locking portion 32 having an L-shaped cross section that covers the peripheral edge of the flange-shaped portion 12 of the housing 1 is formed on the side that contacts the housing 1.

  In this manner, the flange member 4 is inserted into the housing 1 arranged outside the tank wall 2 from the inside of the tank wall 2. The flange member 4 is composed of a cylindrical portion 41 and a flange portion 42. The cylindrical portion 41 is formed in a size to be inserted into the outer cylindrical portion 11 of the housing 1, and a male screw 41a is formed on the outer surface. is there. A flange portion 42 is connected to the end portion of the tubular portion 41 inside the tank. The flange portion 42 is in contact with the inner surface 22 of the tank around the through hole 20 of the bathtub wall 2 via the inner packing 5. Further, a taper-shaped annular rib 43 whose diameter increases toward the inner side of the tank is formed on the surface opposite to the surface of the flange part 42 that contacts the bathtub wall 2 (inner side of the tank). The peripheral edge itself is a tapered portion 44 whose diameter increases as it goes to the inside of the tank, and these annular rib 43 and tapered portion 44 serve as locking portions for the guide member 6 and the cap member 7, as will be described later. . The inner packing 5 has an annular shape arranged around the through hole 20 of the bathtub wall 2, and is provided on both sides, that is, the side that contacts the bathtub wall 2 and the side that contacts the flange portion 42 of the flange member 4. A protrusion 51 having a deformability for improving the sealing performance is provided on the surface. Further, in the present invention, the blocking member 8 is interposed together with the inner packing 5, which will be described later.

  The flange member 4 is inserted into the through hole 20 from the inside of the bath wall 2 of the bathtub wall 2 by screwing the male screw 41a of the cylindrical portion 41 into the female screw 11a formed in the outer cylindrical portion 11 of the housing 1. Then, the bathtub wall 2 is sandwiched between the flange portion 42 and the flange-shaped portion 12 of the housing 1 via the inner packing 5 (and the blocking member 8 described later) and the outer packing 3, and the housing 1 and the flange member 4 Is fixed to the bathtub wall 2. Here, by fixing the housing 1 and the flange member 4 by screw fitting, even if the thickness of the bathtub wall 2 varies, it can be absorbed.

  A guide member 6 is attached to the flange member 4 fixed to the bathtub wall 2 from the inside of the tank. The guide member 6 includes a side tube portion 61, a lid portion 62, and a discharge pipe 63. The side cylinder part 61, one end edge (end edge which becomes the opening side outside the tank) comes into contact with the inner surface of the flange part 42 of the flange member 4 fixed to the bathtub wall 2, and the flange is formed on the inner peripheral surface. An annular engagement rib 64 that engages with the annular rib 43 of the portion 42 protrudes inward, and the engagement between the engagement rib 64 and the annular rib 43 of the flange portion 42 results in a flange member. 4 is fixed. The side tube portion 61 is provided with a lattice-like bath water inlet 65.

  A lid 62 is formed at the other end edge (the inner edge of the tank) of the side cylinder 61, and a discharge pipe 63 is connected to and opened at a substantially central portion of the lid 62. This opening is a bathtub. A jet outlet 66 is jetted into 91. One end side (outer side of the tank) of the discharge pipe 63 is inserted into the cylindrical portion 41 of the flange member 4 from the inner side of the tank and communicates with the discharge flow path 14 of the housing 1, and the other end side (inner side of the tank) is the lid. Connected to the unit 62. The guide member 6 is covered with a cap member 7.

  The cap member 7 includes a front lid portion 71 having a discharge port 70 formed at a substantially central portion, and a side tube portion 72 provided continuously from the periphery of the front lid portion 71. A discharge port 70 formed at a substantially central portion of the front lid portion 71 is formed so as to correspond to a portion where the discharge pipe 63 of the guide member 6 is connected and opened, and is discharged from the discharge pipe 63. This is for discharging the bath water 92 in which bubbles are mixed. In addition, the side cylinder portion 72 has a large number of fine holes 73 for preventing foreign matter from entering, and in this embodiment, the eyes are closer than the lattice-shaped bath water inlet 65 formed in the guide member 6. The fine holes prevent foreign matter such as hair from being inhaled from the bath water inlet 65.

  The cap member 7 covers the guide member 6 and the flange portion 42 of the flange member 4, and an annular engagement rib 74 formed on the inner peripheral surface of the side cylinder portion 72 is connected to the peripheral edge of the flange portion 42. By being engaged with the taper portion 44, the flange portion 42 is attached.

  Next, the blocking member 8 will be described. The blocking member 8 fills the space surrounded by the bathtub wall 2, the inner packing 5, the flange member 4, and the cap member 7, or is formed between the cap member 7 and the bathtub wall 2 as shown in FIG. An annular plate portion 81 that contacts the edge of the side cylinder portion 72 of the cap member 7 on the side close to the bathtub wall 2 and the outer peripheral edge of the annular plate portion 81 are continuously provided from the outer peripheral edge to the inside of the tank. It is formed with the material similar to the packing which consists of the cylindrical part 82 to be formed.

  In this embodiment, as shown in FIG. 2, the blocking member 8 is arranged so as to be fitted on the outer side of the outer packing 3, and the engaging rib 74 of the cap member 7 is connected to the tapered portion 44 of the flange member 4. When it is engaged and attached, it is interposed between the edge of the side cylinder portion 72 of the cap member 7 and the bathtub wall 2 to fill the gap S in this portion.

  When the blocking member 8 is not provided, a gap S is formed between the end edge of the side cylinder portion 72 of the cap member 7 and the bathtub wall 2, and the bath water 92 sucked in the guide member 6 is The original path through the fine hole 73 of the cap member 7 from the inside of the bathtub 91, the taper portion 44 of the flange member 4 and the engagement rib 74 of the cap member 7 through the gap S from the inside of the bathtub 91. There are two paths through the gap S of the engaging portion. That is, a small gap S (not shown) is formed in the engagement portion between the taper portion 44 of the flange member 4 and the engagement rib 74 of the cap member 7, so that this small gap S is formed. When the bath water 92 passes, the suction energy generated by the pump 94 is lost, and the suction efficiency is deteriorated. However, the blocking member 8 fills the gap S between the cap member 7 and the bathtub wall 2, The bath water 92 that is sucked in from the gap S with low efficiency is eliminated, and the sucking efficiency can be improved by sucking only through the fine holes 73. Further, foreign matter such as hair is prevented from being sucked and clogged from the gap S between the cap member 7 and the bathtub wall 2.

  The operation of this jet bath will be described below.

  First, the bathtub 91 is filled with the bath water 92 enough to immerse the circulation connecting member. When the pump 94 is driven, a fine hole provided in the side tube portion 72 of the cap member 7 located so as to correspond to the bath water suction port 65 provided in the side tube portion 61 of the guide member 6. From 73, bath water 92 is inhaled. At this time, since the blocking member 8 fills the gap S formed between the bathtub wall 2 and the cap member 7, the bath water 92 is sucked only through the fine holes 73 of the cap member 7 and sucked in as described above. Efficiency can be improved and foreign matter such as hair can be prevented from being sucked into the gap S.

  The bath water 92 sucked from the bath water suction port 65 of the guide member 6 flows into the cylindrical portion 41 of the flange member 4, passes through the suction pipe 93 a from the suction flow path 15 in the outer cylindrical portion 11 of the housing 1. Inhaled into pump 94. The bath water 92 pressurized by the pump 94 flows into the discharge flow path 14 in the inner cylinder portion 13 of the housing 1 through the discharge pipe 93b. At this time, the throttle portion 17 is formed in the inner cylindrical portion 13 of the housing 1 whose diameter gradually decreases in the discharge flow path 14, and the throttle portion 67 is formed in the discharge pipe 63 of the guide member 6. The flow rate of 92 increases extremely. Further, the air sucked from the air suction pipe 16 is mixed into the bath water 92 flowing through the discharge flow path 14 and ejected from the ejection port 66.

  In this way, the bath water 92 can be circulated while repeating the suction and ejection of the bath water 92, and the bath water 92 containing bubbles can be supplied to the bather.

  Next, 2nd embodiment is described based on FIG. 4, FIG. Since the second embodiment is mostly the same as the first embodiment, the same parts are denoted by the same reference numerals, the description thereof is omitted, and different parts are mainly described.

  In the second embodiment, the inner packing 5 also serves as the blocking member 8. That is, in the first embodiment, the inner packing 5 and the blocking member 8 are separate members, whereas the second embodiment is characterized in that they are the same member.

  The inner packing 5 has an annular shape arranged around the through hole 20 of the bathtub wall 2, and the diameter of the hole at the center is substantially the same as the diameter of the through hole 20 of the bathtub wall 2, and the diameter of the outer periphery. Is substantially the same as the outer diameter of the side cylinder portion 72 of the cap member 7. The inner packing 5 has a deformable protrusion 51 for improving the sealing performance on both surfaces, that is, the surface that contacts the bathtub wall 2 and the surface that contacts the flange portion 42 of the flange member 4. Is protruding.

  As shown in FIG. 5, the inner packing 5 seals the contact portion between the bathtub wall 2 and the flange portion 42 of the flange member 4 and the contact portion between the bathtub wall 2 and the cap member 7.

  With such a configuration, only the inner packing 5 seals the contact portion between the bathtub wall 2 and the flange portion 42 of the flange member 4 and the contact portion between the bathtub wall 2 and the cap member 7. The gap S formed between the cap member 7 and the bathtub wall 2 can be filled, and the bath water 92 sucked from the gap S with low efficiency disappears. Efficiency can be improved. Further, foreign matter such as hair is prevented from being sucked and clogged from the gap S between the cap member 7 and the bathtub wall 2.

  Next, a third embodiment will be described with reference to FIGS. Since this third embodiment is similar to the second embodiment for the most part, the same parts are denoted by the same reference numerals, description thereof is omitted, and different parts are mainly described.

  In the third embodiment, the inner packing 5 also serves as the blocking member 8, and the thickness of the portion that contacts the cap member 7 is made thinner than the thickness of the portion that contacts the flange member 4 of the inner packing 5. .

  The inner packing 5 has an annular shape arranged around the through hole 20 of the bathtub wall 2, and the diameter of the hole at the center is substantially the same as the diameter of the through hole 20 of the bathtub wall 2, and the diameter of the outer periphery. Is substantially the same as the outer diameter of the side cylinder portion 72 of the cap member 7. The inner packing 5 has a deformable protrusion 51 for improving the sealing performance on both surfaces, that is, the surface that contacts the bathtub wall 2 and the surface that contacts the flange portion 42 of the flange member 4. Is protruding.

  And since the edge of the side cylinder part 72 of the cap member 7 is closer to the bathtub wall 2 than the outer surface 21 of the flange part 42 of the flange member 4, as described above, as shown in FIG. The thickness of the portion in contact with the cap member 7 is made thinner than the thickness of the portion in contact with the flange member 4 of the inner packing 5.

  As shown in FIG. 7, the inner packing 5 seals the contact portion between the bathtub wall 2 and the flange portion 42 of the flange member 4 and the contact portion between the bathtub wall 2 and the cap member 7. By reducing the thickness of the portion that contacts the cap member 7 rather than the thickness of the portion that contacts the flange member 4 of the inner packing 5, it is easy to mount at the time of attachment, and the thick portion is compressed and spreads outward. The degree of adhesion with the cap member 7 is increased (sealability is increased).

  With such an inner packing 5, the contact portion between the bathtub wall 2 and the flange portion 42 of the flange member 4 and the contact portion between the bathtub wall 2 and the cap member 7 are sealed, and the cap member 7 and the bathtub wall 2 are sealed. Can be filled, and the bath water 92 sucked from the gap S with low efficiency is eliminated, and the suction efficiency is improved by sucking only through the fine holes 73. . Further, foreign matter such as hair is prevented from being sucked and clogged from the gap S between the cap member 7 and the bathtub wall 2.

  Next, a fourth embodiment will be described with reference to FIGS. In the fourth embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, description thereof is omitted, and different parts are mainly described.

  In the fourth embodiment, the bath water 92 is sucked from the gap S between the side tube portion 72 of the cap member 7 and the flange portion 42 of the flange member 4 without passing through the fine holes 73 of the cap member 7. In order to prevent this, the side tube portion 72 of the cap member 7 and the flange portion 42 of the flange member 4 are characterized by being internally fitted.

  In the fourth embodiment, the fitting recess having the same shape as the tapered portion 44 in which the tapered portion 44 of the flange portion 42 of the flange member 4 is fitted into the inner peripheral surface of the side cylindrical portion 72 of the cap member 7. 75 is formed, and the taper portion 44 of the flange member 4 is fitted into the fitting recess 75 for sealing.

  With such a configuration, the blocking member 8 fills the gap S between the side cylinder portion 72 of the cap member 7 and the flange portion 42 of the flange member 4, and the air is sucked from the gap S with low efficiency. The bath water 92 is eliminated, and the suction efficiency can be improved by sucking only through the fine holes 73.

  The connection member for circulation of the jet bath of the present invention can be applied to various connection members for circulation such as a circulation device using a liquid as a medium.

It is an exploded sectional view of a first embodiment. (A) is an assembly sectional view same as the above, (b) is an enlarged view of the main part of (a), and (c) is an enlarged view of the main part when no blocking member is provided. It is a whole block diagram of a jet bath. It is an exploded sectional view of a second embodiment. (A) is an assembly sectional view same as the above, (b) is an enlarged view of the main part of (a). It is an exploded sectional view of a third embodiment. (A) is an assembly sectional view same as the above, (b) is an enlarged view of the main part of (a). It is an exploded sectional view of a fourth embodiment. (A) is an assembly sectional view same as the above, (b) is an enlarged view of the main part of (a).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Housing 10 Opening 15 Suction flow path 2 Bathtub wall 20 Through-hole 21 Tank outer surface 22 Tank inner surface 3 Outer packing 41 Tube part 42 Flange part 4 Flange member 5 Inner packing 6 Guide member 63 Discharge pipe 66 Spout 7 Cap Member 70 Discharge port 71 Front lid part 73 Fine hole 72 Side cylinder part 8 Blocking member 92 Bath water S Crevice

Claims (3)

The opening of the housing having an opening communicating with the bath water intake passage is communicated with the through hole of the bathtub wall, and the periphery of the opening of the housing is brought into contact with the outer surface of the tank around the through hole through the outer packing. The tube portion of the flange member consisting of the tube portion and the flange portion is inserted into the opening of the housing through the through hole from the inside of the bath wall of the bathtub wall so that the inside of the tube portion communicates with the suction flow path, and the flange portion is A front lid portion which is fixed in a state where the bathtub wall is sandwiched between the housing and the flange member by being brought into contact with the inner surface of the tank around the through-hole through the packing, and the front lid is formed with a discharge port at a substantially central portion. In the connection member for circulation of the jet bath in which a cap member comprising a side cylinder portion formed continuously from the periphery of the portion and formed with a large number of fine holes for preventing foreign matter mixture is placed on the flange portion of the flange member, Cap part Preventing inhalation of the bath water fills the gap to prevent from being sucked from the gap between the eyes of the cap member without passing through the small holes and tub wall, another blocking member from the inner packing A connection member for circulation of a jet bath, characterized by being provided. In order to prevent the bath water from being sucked from the gap between the side tube portion of the cap member and the flange portion of the flange member without passing through the fine holes of the cap member, the side tube portion of the cap member and the flange member The connecting member for circulating a jet bath according to claim 1, wherein the flange portion is fitted into the inner portion . The opening of the housing having an opening communicating with the bath water intake passage is communicated with the through hole of the bathtub wall, and the periphery of the opening of the housing is brought into contact with the outer surface of the tank around the through hole through the outer packing. The tube portion of the flange member consisting of the tube portion and the flange portion is inserted into the opening of the housing through the through hole from the inside of the bath wall of the bathtub wall so that the inside of the tube portion communicates with the suction flow path, and the flange portion is A front lid portion which is fixed in a state where the bathtub wall is sandwiched between the housing and the flange member by being brought into contact with the inner surface of the tank around the through-hole through the packing, and the front lid is formed with a discharge port at a substantially central portion. In the connection member for circulation of the jet bath in which a cap member comprising a side cylinder portion formed continuously from the periphery of the portion and formed with a large number of fine holes for preventing foreign matter mixture is placed on the flange portion of the flange member, Cap part In order to prevent inhalation from the gap between the cap member and the bathtub wall without passing through the fine holes, a blocking member is provided to block the suction of bath water by filling the gap, and the inner packing is a blocking member. together serving as a circulating connecting member features and to distearate Ettobasu that formed by reducing the thickness of the cap member abutting portion than the thickness of the flange member abutting portion of the inner packing.

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