JP7075755B2 - Nozzle device - Google Patents

Description

The present invention relates to a nozzle device that ejects a liquid into a bathtub.

Nozzle devices used in so-called jet baths mix air with water supplied by a circulation pump or eject it into a bathtub without mixing air. For example, Patent Document 1 describes a cylindrical nozzle holder provided inside a bathtub wall, a conical rotary nozzle body rotatably housed in the nozzle holder, and a disk for holding the rotary nozzle body in the nozzle holder. A nozzle device including a nozzle cover in the shape of a nozzle is disclosed. The nozzle cover is screwed onto the inner surface of the nozzle holder on the front opening side to cover the rotary nozzle body from the front side.

Japanese Unexamined Patent Publication No. 2013-132421

In the technique disclosed in Patent Document 1, the nozzle cover is screwed into the nozzle holder so as to cover the front side of the rotary nozzle body so as to prevent the rotary nozzle body from coming off the nozzle holder. Therefore, if the user comes into contact with the nozzle cover and unintentionally rotates the nozzle cover, the nozzle cover may come off. Such a problem is not limited to the technique disclosed in Patent Document 1, and is a common problem in restricting the detachment of the nozzle from the support member that rotatably supports the nozzle by the restricting member, and improvement thereof is desired. Is done.

The present invention has been made in view of such a situation, and a main object thereof is to provide a nozzle device that makes it difficult for a regulating member that regulates the movement of a nozzle to come off to come off.

In order to solve the above problems, in the nozzle device of one aspect of the present invention, a nozzle for ejecting a liquid into a bathtub, a support member for rotatably supporting the nozzle, and a nozzle in the rotation axis direction of the nozzle are support members. It is provided with a regulating member that regulates the movement in the detaching direction. The regulating member is provided on the side opposite to the detaching direction from the tip of the nozzle in the rotation axis direction of the nozzle.

According to the present invention, since it is difficult for the user to come into contact with the regulating member that regulates the movement of the nozzle to be detached, it is possible to prevent the regulating member from coming off.

It is a perspective view of the nozzle device of an Example. It is an exploded view of a nozzle device. It is a vertical sectional view of the nozzle device in a state attached to a bathtub. It is a vertical cross-sectional view of the nozzle device of the 2nd state which a jet flow comes out from a 2nd spout. It is a perspective view of the nozzle device which omitted the outer connecting member and the cover member. FIG. 5 is a cross-sectional view taken along the line segment AA of the nozzle device shown in FIG. It is a figure for demonstrating the process of forming a welded part.

FIG. 1 is a perspective view of the nozzle device 100 of the embodiment. The nozzle device 100 is attached to a mounting hole formed in the bathtub wall, is connected to a circulation pump (not shown) on the outside of the bathtub wall, and ejects the liquid supplied by the circulation pump into the bathtub. Further, the nozzle device 100 sucks the liquid in the bathtub and sends it to the circulation pump.

The nozzle device 100 has an outer connecting member 1 connected to a circulation pump, a nozzle 2 having a first ejection port 21a and a second ejection port 22a for ejecting a liquid into the bathtub, and a suction port 31 for sucking the liquid in the bathtub. The cover member 3 is provided with at least. The outer connecting member 1 has a supply port 12a to which a liquid is supplied from the circulation pump and a discharge port 13a to discharge the liquid to the circulation pump. The first spout 21a and the second spout 22a open in the bathtub.

FIG. 2 is an exploded view of the nozzle device 100. FIG. 2 shows the nozzle device 100 excluding the outer connecting member 1, the O-ring, the packing, and the like, and shows the members located inside the bathtub wall. The nozzle device 100 further includes a regulating member 20, a supporting member 24, and a fixing member 15. Further, the nozzle 2 is composed of a nozzle head 21 and a nozzle body 22.

The cover member 3 has an annular plate portion 3a, a side portion 3b, and a side hole portion 3c. The side portion 3b is formed in a cylindrical shape and has a plurality of side hole portions 3c constituting the suction port 31. The annular plate portion 3a projects radially inward from one end of the side portion 3b, is an annular plate surface, and covers at least a part of the regulating member 20. The side hole portion 3c is formed through the side hole portion to allow the liquid in the bathtub to pass through.

The regulating member 20 is formed of a resin material in an annular shape, and is provided for attaching the nozzle body 22 to the support member 24. The regulating member 20 has a first screw portion 20a for screwing to the support member 24, and a notch portion 20b in which a part of the first screw portion 20a is cut out. The first screw portion 20a is formed in a spiral shape on the outer peripheral surface of the regulating member 20.

Although the details of the nozzle body 22 will be described later, the nozzle body 22 is rotatably supported by the support member 24, and has at least a second ejection port 22a and an operation unit 23. The second ejection port 22a is formed in an arc shape, and is provided in plurality on the surface of the nozzle body 22 on the distal end side facing the inside of the bathtub so as to be spaced apart in the circumferential direction. A plurality of operation units 23 are formed in a protruding shape on the surface of the nozzle body 22 on the tip side facing the inside of the bathtub so as to be separated in the circumferential direction, and are gripped by the user's fingers when the nozzle body 22 is rotated. A plurality of operation units 23 are provided between the plurality of second ejection ports 22a.

The rotation axis passing through the center of the nozzle body 22 is simply referred to as the rotation axis of the nozzle body 22, and the direction along the rotation axis of the nozzle body 22 is referred to as the rotation axis direction. Further, in the direction of the rotation axis, the direction from the outside to the inside of the bathtub wall is referred to as the inward direction in the rotation axis direction, and the direction from the inside to the outside of the bathtub wall is referred to as the outward direction in the rotation axis direction. The direction of rotation of the nozzle body 22 is along the direction perpendicular to the surface of the bathtub wall perpendicular to the bathtub wall on which the nozzle device 100 is provided. The nozzle body 22 faces inward in the rotation axis direction along the detachment direction in which the nozzle body 22 separates from the support member 24. The surface of the nozzle body 22 facing the inside of the bathtub is the inner surface in the rotation axis direction and the surface of the nozzle body 22 on the detachment direction side.

Since the nozzle head 21 is formed in a cylindrical shape and is provided so that the angle of the center line of the first jet outlet 21a can be changed with respect to the rotation axis of the nozzle body 22, the nozzle head 21 is provided in an arbitrary direction within a certain angle range. It can be tilted and the direction of the jet flow from the first ejection port 21a can be adjusted. The nozzle 2 ejects the liquid supplied from the circulation pump inward in the rotation axis direction from the first ejection port 21a and / or the second ejection port 22a.

The first ejection port 21a is provided at the central portion of the end surface of the nozzle device 100 when viewed from the direction of the rotation axis, that is, at the central portion of the end surface of the nozzle 2 and the cover member 3 facing the inside of the bathtub. The first spout 21a ejects a spot jet that has high straightness and suppresses expansion into the bathtub. The second spout 22a has a larger total opening area than the first spout 21a, is gentler than the first spout 21a, and ejects a wide jet inclined in a radial direction from the rotation axis of the nozzle 2 into the bathtub. ..

Although the details will be described later, the support member 24 is formed of a resin material in a circular shape, is fixed to the fixing member 15, and rotatably supports the nozzle body 22 inserted inside. A plurality of through holes functioning as suction ports 31 are formed on the outer surface of the support member 24.

The fixing member 15 has a cylindrical shape with both ends open, and has a flange 15a at one end. The fixing member 15 has a male screw formed on the outer peripheral surface of the other end portion, and the other end portion is inserted into a mounting hole provided in the bathtub wall and screwed into the outer connecting member 1. The nozzle device 100 is attached to the bathtub by sandwiching the edge of the attachment hole formed in the bathtub wall by the fixing member 15 and the outer connecting member 1. The flange 15a is formed with a protrusion 15b that stands upright toward the inside of the bathtub. The protrusions 15b are arranged in a circumferential shape to support the support member 24.

FIG. 3 is a vertical sectional view of the nozzle device 100 attached to the bathtub 9. The outer connecting member 1 has a body portion 11, a supply portion 12, a discharge portion 13, and an inner tubular portion 14. The body portion 11 has a cylindrical shape and has a flange 11a at one end on the bathtub wall 9a side. FIG. 3 shows an aspect in which the flange 11a abuts on the bathtub wall 9a of the bathtub 9, but packing may be provided between the flange 11a and the bathtub wall 9a.

Inside the body portion 11, an internal tubular portion 14 is formed coaxially. The inner tubular portion 14 has one end on the bathtub 9 side open and the other end continuous with the supply portion 12. The piping of the circulation pump is connected to the supply port 12a located at the end of the supply unit 12. A liquid supply flow path 17 is formed inside the inner tubular portion 14.

The discharge flow path 18 is formed inside the body portion 11 and outside the inner tubular portion 14. The discharge flow path 18 communicates with the discharge unit 13. The piping of the circulation pump is connected to the discharge port 13a located at the end of the discharge unit 13. The flow portion 16 is connected to the internal tubular portion 14. The flow section 16 is used to take in air when external air is taken in and air bubbles are mixed in the jet. In the embodiment, the case where the open end of the flow portion 16 is closed and bubbles are not mixed in the jet will be described, but when the bubbles are mixed in the jet, the open end of the flow portion 16 is opened. At the same time, an ejector may be provided in the internal tubular portion 14.

The fixing member 15 is inserted through the mounting hole 9b of the bathtub 9 and is screwed into a female screw formed on the inner peripheral surface of the body portion 11 to be connected to the outer connecting member 1. A packing 34 for watertight sealing is sandwiched between the flange 15a and the bathtub wall 9a. A part of the discharge flow path 18 is formed inside the fixing member 15 and outside the supporting member 24.

The support member 24 has a base portion 24a, a step portion 24b, a diameter expansion portion 24c, a flange portion 24d, an annular portion 24e, a diameter reduction portion 24f, a recess portion 24g, a second screw portion 24h, and a through hole 24i. The circular tubular base portion 24a is inserted into and fitted into the inner tubular portion 14 of the outer connecting member 1 to form a part of the supply flow path 17. An annular packing is arranged on the outer periphery of the base portion 24a, and the supply flow path 17 and the discharge flow path 18 are watertightly sealed so as not to communicate with each other.

The step portion 24b is formed on the inner peripheral surface of the base portion 24a along the circumferential direction, and forms a step extending inward in the radial direction on the way from the outside to the inside in the rotation axis direction 42. The step portion 24b abuts on the end portion of the nozzle body 22 and functions as a stopper for restricting the nozzle body 22 from moving outward in the rotation axis direction 42, that is, toward the back side of the bathtub wall 9a.

The diameter-expanding portion 24c is provided so as to expand the diameter toward the inside of the bathtub from the end portion inside the rotation axis direction 42 of the base portion 24a. The flange portion 24d is formed by bending outward in the radial direction from the enlarged diameter portion 24c. The second screw portion 24h is formed on the inner peripheral surface on the tip end side of the enlarged diameter portion 24c, that is, on the inner peripheral surface on the opening end side to the bathtub 9. The second screw portion 24h is screwed with the first screw portion 20a of the regulating member 20.

The annular portion 24e is folded back from the outer peripheral edge of the flange portion 24d toward the outside of the bathtub wall 9a, that is, toward the outer connecting member 1, and engages with the fixing member 15. The annular portion 24e abuts on the flange 15a and is supported by the protrusion 15b, and the protrusion 15b suppresses rattling in the radial direction. The support member 24 is fixed to the fixing member 15 by fixing the annular portion 24e and the protrusion 15b, or by fastening the annular portion 24e and the protrusion 15b with screws. The annular portion 24e is provided with a plurality of through holes 24i penetrating inside and outside, and the inside of the bathtub 9 and the discharge flow path 18 communicate with each other through the through holes 24i.

The support member 24 has a reduced diameter portion 24f that projects inward from the inner surface of the base portion 24a inside the bathtub wall 9a to the stepped portion 24b. The support member 24 is formed with an outlet 17a of the supply flow path 17 at an eccentric position inside. The outlet 17a has an inner diameter of about half or slightly smaller than the inner diameter of the base 24a, is formed in a circular shape, an oval shape, an elliptical shape, or the like, and is eccentric with respect to the central axis of the support member 24. It is in the same position. That is, the outlet 17a is an opening in which the inner diameter of the base portion 24a is reduced by about half by the diameter reduction portion 24f. On the side of the outflow port 17a, a recessed portion 24g recessed toward the outside of the bathtub wall 9a is formed in the support member 24. When the nozzle body 22 rotates, foreign matter and dust contained in the flowing liquid enter the recessed portion 24g, so that the biting between the rear end portion 22d of the nozzle body 22 and the outlet 17a can be reduced.

The nozzle body 22 has a second ejection port 22a, a first inlet 22b, a second inlet 22c, a partition wall 22e, a regulated portion 22f, an outer cylinder portion 22g, a flange portion 22h, and a tubular portion 22i. The flange portion 22h is formed by bending outward in the radial direction from the tip inside the rotation axis direction 42 of the tubular portion 22i. A plurality of second ejection ports 22a are formed on the flange portion 22h.

The outer cylinder portion 22g is bent so as to be folded back toward the outer connecting member 1 from the outer peripheral edge of the flange portion 22h. The regulated portion 22f projects radially outward from the outer cylinder portion 22g. The regulated portion 22f engages with the regulating member 20 to regulate the movement of the nozzle body 22 inward in the rotation axis direction of the nozzle body 22, that is, in the direction toward the inside of the bathtub 9. The movement in the direction toward the inside of the bathtub 9 is a movement in the direction from the outside to the inside of the bathtub wall 9a, and is a movement in the direction away from the inner surface of the bathtub wall 9a. Further, the regulated portion 22f receives the elastic force of the annular seal member 27 arranged on the support member 24, and is pressed against the support member 24 by the restricting member 20. By pressing the regulated portion 22f against the seal member 27, the watertightness of the flow path of the first ejection port 21a and the flow path of the second ejection port 22a is maintained.

The nozzle body 22 has a partition wall 22e that separates a flow path toward the first ejection port 21a and a flow path toward the second ejection port 22a. The partition wall 22e forms the first inflow port 22b and the second inflow port 22c at the rear end portion 22d of the nozzle body 22. The first inlet 22b communicates with the first outlet 21a, and the second inlet 22c communicates with the second outlet 22a. Due to the rotation of the nozzle body 22, one of the first inflow port 22b and the second inflow port 22c is in a state of communicating with the supply flow path 17, and the other is in a state of blocking communication.

The nozzle device 100 shown in FIG. 3 is in a state in which the supply flow path 17 and the first inflow port 22b communicate with each other, and is in the first state in which a jet flow is emitted from the first ejection port 21a. The first inflow port 22b is covered with the reduced diameter portion 24f, and the communication with the supply flow path 17 is cut off. When the user grips the operation unit 23 and rotates the nozzle body 22 from the first state in which the jet flow is emitted from the first ejection port 21a, the second state shown in FIG. 4 below is obtained.

FIG. 4 is a vertical cross-sectional view of the nozzle device 100 in the second state in which a jet flow is emitted from the second ejection port 22a. As shown in FIG. 4, the first inflow port 22b is blocked from communicating with the supply flow path 17 by the reduced diameter portion 24f, and the second inflow port 22c faces the outflow port 17a and communicates with the supply flow path 17. It is in a state. In the second state, the plurality of second jets 22a generate a wide jet inclined in a direction extending in the radial direction from the central axis of the nozzle 2.

The regulating member 20 is provided in the rotation axis direction 42 of the nozzle body 22 on the opposite side of the nozzle body 22 from the tip of the nozzle 2 in the detachment direction (outside the rotation axis direction 42), and is from the nozzle body 22 to the nozzle body 22 in the detachment direction. It is installed so that it does not stick out. That is, the regulating member 20 is positioned so as not to protrude into the bathtub from the surface of the nozzle body 22 exposed in the bathtub. The tip of the nozzle 2 is a portion of the nozzle 2 located at the end on the most detaching direction side. Further, the regulating member 20 is located at a position recessed from the operation unit 23 toward the bathtub wall 9a. That is, the regulating member 20 is located outside the rotation axis direction 42 from the operation unit 23. Further, the regulating member 20 is located at a position deeper on the bathtub wall 9a side than the opening surface where the second ejection port 22a is exposed in the bathtub, that is, the surface of the flange portion 22h. As a result, it is difficult for the user's finger to hit the regulating member 20 during the rotation operation of the nozzle body 22, and it is difficult for the user to come into contact with the regulating member 20 even if the user leans against the nozzle device 100 during bathing. As a result, the restricting member 20 screwed to the support member 24 can be configured so as not to be easily removed.

The regulating member 20 is provided at a position where it overlaps the nozzle body 22 in the radial direction. Specifically, the regulating member 20 is arranged radially outside the outer cylinder portion 22g of the nozzle body 22 and faces the outer cylinder portion 22g in the radial direction, and the entire regulating member 20 overlaps the nozzle body 22. The regulating member 20 is arranged outside the nozzle body 22 in the radial direction while preventing the regulating member 20 from coming out of the bathtub from the tip of the nozzle body 22. As a result, the dimension of the nozzle device 100 protruding from the bathtub wall 9a, that is, the dimension of the nozzle device 100 in the rotation axis direction 42 can be reduced. The surface inside the rotation axis direction 42 of the regulating member 20 is provided so as to be substantially flush with the surface inside the rotation axis direction 42 of the support member 24.

By the way, if the regulating member 20 is rotated around when the nozzle body 22 is rotated, the screwing may be released and the regulating member 20 may be disengaged from the support member 24, and the nozzle body 22 may be detached from the support member 24. Therefore, the regulating member 20 is fixed to the support member 24 so as not to rotate with respect to the support member 24 in a state of being screwed to the support member 24. As a result, it is possible to prevent the restricting member 20 from being twisted and disengaged during the rotation operation of the nozzle body 22. For example, a rotation restricting member such as a screw or a pin is inserted into a screwed portion of the regulating member 20 and the supporting member 24, or an adhesive is poured between the regulating member 20 and the supporting member 24 to fix the regulating member 20 and the supporting member 24. By welding or welding the regulating member 20 and the supporting member 24, the regulating member 20 screwed to the supporting member 24 can be prevented from rotating.

FIG. 5 is a perspective view of the nozzle device 100 excluding the outer connecting member 1 and the cover member 3. In FIG. 5, a welded portion 40 is formed by welding the outer peripheral portion of the regulating member 20 and the inner peripheral portion of the supporting member 24, fixing the regulating member 20 and the supporting member 24, and the regulating member 20 is the nozzle body 22. It is prevented from turning around due to the rotation of. Since the outer peripheral portion of the regulating member 20 is welded, the nozzle body 22 located on the inner peripheral side of the regulating member 20 is maintained rotatably.

The welded portion 40 is formed on the inner side of the hole portion 44. The hole portion 44 is located on the boundary between the first screw portion 20a and the second screw portion 24h, and the hole portion 44 is formed from the regulating member 20 to the support member 24. A part of the boundary between the first screw portion 20a and the second screw portion 24h forms the hole portion 44. The hole 44 is formed so that the outer peripheral portion of the regulating member 20 and the inner peripheral portion of the support member 24 are recessed in the rotation axis direction 42, and are open in the detaching direction of the nozzle body 22. A plurality of welded portions 40 may be formed on the regulating member 20 and the supporting member 24.

FIG. 6 is a cross-sectional view taken along the line segment AA of the nozzle device 100 shown in FIG. 5, showing a state before forming the welded portion 40. At the planned welding position 40a, a first recess 20c in which the outer peripheral portion of the regulating member 20 is recessed and a second recess 24j in which the inner peripheral portion of the support member 24 is recessed are formed, and the first recess 20c and the first recess 20c are formed. The two recesses 24j are combined to form an insertion hole portion 45 for inserting the iron tip of a heating tool for welding. The insertion hole portion 45 is open in the detaching direction of the nozzle body 22, that is, inward in the rotation axis direction 42. The insertion hole portion 45 is formed by aligning the first recess 20c and the second recess 24j when the regulating member 20 is screwed and attached to the support member 24.

The restricting member 20 is formed with a notch 20b in which all the first screw portions 20a at the planned welding position 40a are cut out in the rotation axis direction 42. On the other hand, the second screw portion 24h of the support member 24 remains. Since the insertion hole 45 at the planned welding position 40a includes the notch 20b, the second screw portion 24h is separated from the outer peripheral portion of the regulating member 20. The insertion hole portion 45 is located at the boundary between the first screw portion 20a and the second recess 24j, in other words, a part of the boundary between the first screw portion 20a and the second recess 24j forms the insertion hole portion 45. The cutout portion 20b functions as a space in which the resin material melts and moves when the second screw portion 24h is melted.

FIG. 7 is a diagram for explaining a process of forming the welded portion 40. FIG. 7A shows a state in which the rod-shaped iron tip 50 located at the tip of the welding tool is moved toward the insertion hole 45 at the planned welding position 40a in a heated state. The operator aims at the insertion hole portion 45 formed in a circle by the first recess 20c and the second recess 24j, and moves the iron tip 50. The iron tip 50 may be moved by a manufacturing device that holds the heating tool instead of the operator. The insertion hole portion 45 formed at the planned welding position 40a has a diameter larger than that of the iron tip 50.

FIG. 7B shows a state in which the iron tip 50 is pushed into the planned welding position 40a. Although the bottom side of the insertion hole portion 45 is melted by the iron tip 50, the side surface on the front surface side is hardly melted because the diameter is larger than that of the iron tip 50. It is the second screw portion 24h that is mainly melted by the iron tip 50, and then the side surface of the notch portion 20b that is behind the first recess 20c. Since the resin material melted by the iron tip 50 is on the inner side of the first recess 20c and the second recess 24j, it is possible to prevent the melted resin material from coming out to the surfaces of the regulating member 20 and the support member 24.

The regulated portion 22f of the nozzle body 22 is provided at a position that does not overlap with the planned welding position 40a in the rotation axis direction, and is located radially inside the first recess 20c, that is, radially inside the insertion hole portion 45. .. As a result, when the iron tip 50 is pushed in too much, the possibility that the iron tip 50 melts the regulated portion 22f can be reduced.

FIG. 7C shows a state in which the iron tip 50 is pulled out from the insertion hole portion 45 to form the welded portion 40. Since the second screw portion 24h is crushed by the welding portion 40, the regulating member 20 cannot rotate with respect to the supporting member 24, and the welding portion 40 prevents the regulating member 20 from rotating with respect to the supporting member 24. The peripheral part is fixed. This can limit the rotation of the regulating member 20 and prevent the regulating member 20 from coming off the support member 24. By fixing the regulating member 20 to the support member 24 by the welding portion 40, it can be easily fixed without using other members. Further, as compared with the case where a metal screw is used to fix the regulating member 20 to the support member 24, it is possible to avoid the possibility that the screw will loosen due to the difference in the expansion coefficient between the metal material and the resin material.

Since the first recess 20c, the notch 20b, and the second recess 24j are formed at the planned welding position 40a, a space for the molten resin to collect is secured. As a result, the welded portion 40 is formed on the inner side of the hole portion 44, and it is possible to prevent the welded portion 40 from being formed so as to bulge on the surfaces of the regulating member 20 and the supporting member 24. A part of the notch portion 20b may remain after welding.

As shown in FIG. 7A, the cutout portion 20b is formed so as to cut out the first screw portion 20a at the scheduled welding position 40a, and the second screw portion 24h at the scheduled welding position 40a is left. That is, the support member 24 is mainly configured to be melted by heating with the iron tip 50. As a result, it is possible to reduce the possibility that the regulating member 20 is deformed when it is melted by the iron tip 50 and becomes a resistance to the rotation of the nozzle body 22. Further, by leaving the second screw portion 24h, it is possible to secure the resin material to be melted.

It should be noted that the examples are merely examples, and it is understood by those skilled in the art that various modifications are possible for the combination of each component, and that such modifications are also within the scope of the present invention.

In the embodiment, the mode in which the regulating member 20 is formed in a ring shape is shown, but the present invention is not limited to this mode, and for example, the regulating member 20 may be formed in a C shape. By forming the regulating member 20 in a C shape, the diameter of the regulating member 20 can be increased, and it can be easily attached to the outer periphery of the nozzle body 22. Further, the regulating member 20 may be composed of a plurality of arcuate members.

Further, in the embodiment, an embodiment in which the regulating member 20 and the support member 24 are welded by heating is shown, but the embodiment is not limited to this. For example, the adhesive may be poured into the planned welding position 40a to fix the regulating member 20 to the support member 24. Further, the regulating member 20 may be fixed to the support member 24 by screwing a screw into the insertion hole portion 45.

Further, in the embodiment, the aspect in which the notch portion 20b is formed in the regulating member 20 and the second screw portion 24h of the support member 24 is left is shown, but the present invention is not limited to this embodiment. For example, a notch portion may be formed so as to cut out the second screw portion 24h of the support member 24, and the first screw portion 20a of the regulation member 20 may be left.

In the first aspect, the nozzle device of the second aspect may be provided at a position where the restricting member radially overlaps with the nozzle.
As a result, the size of the nozzle device protruding from the bathtub wall can be reduced.

In the first aspect or the second aspect, the nozzle device of the third aspect may be fixed to the support member so that the restricting member does not rotate with respect to the support member.
As a result, it is possible to prevent the restricting member from moving around and coming off during the rotation operation of the nozzle.

In the nozzle device of the fourth aspect, a part of the restricting member may be welded to the support member in the third aspect.
By fixing the regulating member to the support member by welding, it can be easily fixed without using other members.

In the nozzle device of the fifth aspect, in the third or fourth aspect, the restricting member has a first screw portion, and the support member has a second screw portion screwed to the first screw portion. However, the boundary portion between the first screw portion and the second screw portion may form at least a part thereof, and a hole portion opened in the detachment direction may be formed.
By screwing the regulating member into the support member so as to align the positions of the first recess and the second recess, the degree of tightening of the regulating member can be set. Further, it is possible to easily provide a configuration for restricting the rotation of the restricting member in the hole formed by combining the first recess and the second recess.

In the fifth aspect of the nozzle device of the sixth aspect, a welded portion in which the support member and the restricting member are welded may be formed on the side of the hole portion opposite to the detaching direction.
The holes make it easier to insert the iron tip of the heating tool during welding, and it is possible to prevent the molten resin material from rising on the front side of the regulating member and the support member.

In the nozzle device of the seventh aspect, in the fifth or sixth aspect, the hole portion is a notch portion in which either the first screw portion or the second screw portion is cut out along the rotation axis direction. May include.
As a result, it is possible to secure an escape space for the resin material melted during the welding process.

2 Nozzle, 20 regulation member, 20a 1st thread part, 20b notch part, 24 support member, 24h 2nd thread part, 40 welding part, 100 nozzle device.

Claims (6)

A nozzle that ejects liquid into the bathtub and
A support member that rotatably supports the nozzle and
A regulating member that regulates the movement of the nozzle in the direction of the rotation axis of the nozzle in the direction in which the nozzle separates from the support member is provided.
The regulating member is provided on the side opposite to the detaching direction from the tip of the nozzle in the rotation axis direction of the nozzle, and is fixed to the support member so as not to rotate with respect to the support member. Device. The nozzle device according to claim 1, wherein the regulating member is provided at a position where the nozzle is radially overlapped with the nozzle. The nozzle device according to claim 1 or 2 , wherein a part of the regulating member is welded to the support member. The regulating member has a first screw portion and has a first screw portion.
The support member has a second screw portion that is screwed into the first screw portion.
Any of claims 1 to 3, wherein the boundary portion between the first screw portion and the second screw portion forms at least a part thereof, and a hole portion opened in the detaching direction is formed. Nozzle device described in. The nozzle device according to claim 4 , wherein a welded portion in which the support member and the restricting member are welded is formed on the side of the hole portion opposite to the detaching direction. The nozzle device according to claim 4 or 5 , wherein the hole portion includes a notch portion in which either one of the first screw portion and the second screw portion is cut out along the rotation axis direction. ..

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