JP3057910U - Bathtub circulator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a sealing property between a discharge pipe or an introduction pipe and a pipe connection port, and to easily connect the discharge pipe or the introduction pipe to the pipe connection port with a reduced number of parts. And a bathtub circulator capable of reducing manufacturing costs. A pair of pipe connecting portions is integrally formed on a rear case made of synthetic resin, and pipe connecting ports are formed on the pair of pipe connecting portions. A first female screw portion 24 is formed in each of the pipe connection ports 23a and 23b. The pair of lock rings 25a, 25b are engaged on receiving surfaces 29 in the pipe connection ports 23a, 23b.
The pressing body 30 has a first male screw portion 33 formed therein.
By screwing the first male screw part 33 of the No. 0 into the first female screw part 24 of the pipe connection ports 23a and 23b, the bathtub circulating tool 11 including the one-touch joint 54 is configured.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 This invention relates to a bathtub circulating device that is attached to a side wall of a bathtub, sucks and moves bathtub water toward a heater, and discharges the bathtub water heated by the heater into the bathtub. is there.

[0002]

[Prior art]

 Normally, the bathtub circulating device is mounted on the side wall of the bathtub, and the bathtub circulating device is provided with a pair of openings that open into the bathtub, and is provided with a discharge pipe attached to a heater arranged outside the bathtub. It has a pair of pipe connection ports for connecting to a pipe. Further, an outflow passage and an inflow passage communicating with the both openings and the pipe connection ports are provided in the bathtub circulator.

When connecting a discharge pipe or an introduction pipe to a pipe connection port, a female screw formed in a separate joint is screwed into a male screw portion formed in each pipe connection port to pipe-connect the joint. Connect to mouth. And the discharge pipe or the introduction pipe was inserted into the pipe connection port through the inside of the joint. Alternatively, one end of a short cylindrical base is brazed to a pipe connection port, and a discharge pipe or an introduction pipe is connected to the other end of the base by brazing.

[0004]

[Problems to be solved by the invention]

 However, since the female thread of the separate joint is screwed into the male thread formed at the pipe connection port, the seal between the introduction pipe or discharge pipe and the pipe connection port is provided at the connection between the pipe connection port and the joint. There is a problem that the property is reduced. In addition, since a separate joint is required, the number of parts for connecting the pipes is increased, the manufacturing cost is increased, and connection of the introduction pipe or the discharge pipe is troublesome.

On the other hand, in the case of connection by brazing, brazing of a pipe connection port to a base and brazing of a base to a discharge pipe or an introduction pipe must be performed. There was a problem that the connection with the mouth was troublesome, and the number of connection portions increased, resulting in a decrease in sealing performance.

The present invention has been made by focusing on such problems existing in the prior art. The purpose is to improve the sealability between the discharge pipe or introduction pipe and the pipe connection port, and to easily connect the discharge pipe or introduction pipe to the pipe connection port by reducing the number of parts. An object of the present invention is to provide a bathtub circulator capable of reducing the production cost.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, a bathtub circulator according to claim 1 has a circulation port body attached to a side wall of the bathtub, and the circulation port body has a pair of openings that open into the bathtub. A pair of pipe connection ports for connecting a discharge pipe made of synthetic resin attached to the heater outside the bathtub and the introduction pipe are provided, and an outflow passage and an inflow passage which respectively communicate the opening portions with the pipe connection ports are provided. A part of a one-touch joint, which is provided and connected to each pipe connection port through a discharge pipe and an introduction pipe and has a restricting member for restricting escape from the position, is integrally processed.

According to a second aspect of the present invention, in the circulating device for a bathtub, in the device according to the first aspect, the regulating member is formed of a plurality of regulating pieces having an annular shape and projecting inward, and is provided in the pipe connection port. A pressing member for engaging with the receiving surface, forming a female screw or a male screw in the pipe connection port, and holding the regulating member engaged with the receiving surface in the pipe connection port is provided. And a male screw portion or a female screw portion to be screwed into the female screw or the male screw of the pipe connection port.

A circulating device for a bathtub according to a third aspect of the present invention is the device according to the second aspect, wherein the circulation port main body is formed of engineering plastic. According to a fourth aspect of the present invention, there is provided a bathtub circulator according to the third aspect, wherein the engineering plastic is polyacetal, polyphenylene sulfide, or polyamide, and glass fiber is blended.

[0010]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described in detail. As shown in FIGS. 1, 2 and 4, the bathtub circulator 11 is attached to a side wall 12 of the bathtub. A circulation port main body 13 constituting the bathtub circulation tool 11 is connected to a heater via an introduction pipe 14 for introducing bathtub water to a heater (not shown) and a discharge pipe 15 for discharging bathtub water from the heater to the bathtub. A rear case 16 to be connected, a cylindrical sleeve 18 fitted and fixed in a mounting hole 17 provided in the side wall 12 of the bathtub, and a substantially cylindrical base body 19 fitted in the sleeve 18. ing.

The rear case 16, the sleeve 18, and the base 19 are made of a synthetic resin material. Examples of the synthetic resin material include engineering plastics. Specifically, polyacetal (POM), polyphenylene sulfide (PPS) or polyamide (PA) is used. In addition, these engineering plastics contain glass fiber as a reinforcing material in a range of 20 to 40% by weight, and are excellent in strength and heat resistance. As shown in FIGS. 2 and 4, the rear case 16 is formed in a substantially cylindrical shape with a bottom, and an introduction passage 20 on the center side and a discharge passage 21 on the outer periphery are formed forward from the inner bottom surface.

As shown in FIG. 4, a pair of pipe connecting portions 22 a and 22 b constituting a one-touch joint are formed integrally with the rear end of the rear case 16 so as to extend in the longitudinal direction of the rear case 16. An annular pipe connection port 23a, 23b is formed at the center of each pipe connection portion 22a, 22b. A first female screw portion 24 is formed on the inner periphery of the open end of each of the pipe connection ports 23a and 23b.

One pipe connection port 23 a communicates with the introduction passage 20, and the other pipe connection port 23 b communicates with the discharge passage 21. The pair of pipe connection ports 23a and 23b are respectively connected to an introduction pipe 14 or a discharge pipe 15 extending from a heater (not shown), and bath water is supplied between the introduction passage 20 and the discharge passage 21 and the heater. It can be circulated. The introduction pipe 14 and the discharge pipe 15 are formed in a cylindrical shape from crosslinked polyethylene or polybutene.

As shown in FIG. 3, the pair of lock rings 25a and 25b as the regulating members are formed by pressing a stainless steel into a predetermined shape. The lock ring 25 is preferably formed to have a thickness in the range of 0.2 to 0.6 mm and to be formed in the range of 0.3 to 0.5 mm in order to maintain a predetermined strength. Is even more preferred.

The lock ring 25 includes an annular base ring 26 and a plurality of restricting pieces 27 projecting inward from the base ring 26 by the same length. The restricting piece 27 is bent and formed to extend at 45 degrees from the inner peripheral edge of the base ring 26 with respect to the base ring 26. The lock ring 25 facilitates the insertion of the introduction pipe 14 or the discharge pipe 15 from the base end side to the distal end side of the restriction piece 27, and prevents the inserted introduction pipe 14 or discharge pipe 15 from coming out. To control. The spacer 28 is interposed between the pair of lock rings 25a and 25b. The spacer 28 is formed in an annular shape having a thickness of 0.3 to 1.0 mm.

As shown in FIG. 1, in the pair of lock rings 25a, 25b, one of the lock rings 25a is engaged with a base ring 26 on a receiving surface 29 provided in the pipe connection portion 22a, 22b. Are combined. The spacer 28 is engaged on the receiving surface 29 via the base ring 26 of one lock ring 25a. The base ring 26 of the other lock ring 25b is engaged with the receiving surface 29 via the base ring 26 and the spacer 28 of the lock ring 25a.

The pressing body 30 includes a cylindrical portion 31 formed of brass or bronze, and a grip portion 32 having a larger outer diameter than the cylindrical portion 31. The first male screw portion 33 is formed on the outer peripheral surface of the cylindrical portion 31, and can be screwed into the first female screw portion 24 of each of the pipe connection ports 23a and 23b. Then, the first male screw portion 33 of the pressing body 30 is screwed into the first female screw portion 24 of each of the pipe connection ports 23a and 23b. A pair of locking rings 25a, 25b are positioned and fixed in the pipe connection ports 23a, 23b so as to be immovable in the axial direction and the circumferential direction by the tip of the cylindrical portion 31 of the pressing body 30.

Then, the inlet pipe 14 or the discharge pipe 15 is connected to the pipe connection port 23a or the pipe connection by the lock rings 25a, 25b, the spacer 28, the pressing body 30, etc. in the pipe connection portions 22a, 22b, the pipe connection ports 23a, 23b. A one-touch joint 54 that can be connected simply by inserting it into the opening 23b is configured in the rear case 16.

The core ring 34 includes a cylindrical portion 35 made of brass or bronze, and a flange portion 36 formed at one end thereof. The cylindrical portion 35 is fitted into the introduction pipe 14 or the discharge pipe 15, and the inner end surface of the flange 36 engages with the end surface of the introduction pipe 14 or the discharge pipe 15.

As shown in FIG. 4, the annular flange 37 is formed on the opening-side end surface of the rear case 16, and has a U-shaped cross section made of synthetic rubber or the like on the entire peripheral surface. A packing 38 is fitted. The second female screw portion 39 is threaded on the inner peripheral surface of the flange 37 at the opening end of the rear case 16.

As shown in FIGS. 2 and 4, the sleeve 18 is formed in a cylindrical shape, and a second external thread portion 40 is threaded on the outer peripheral surface thereof. Then, the sleeve 18 is inserted into the mounting hole 17 provided in the side wall 12 of the bathtub, and the second male screw portion 40 and the second female screw portion 39 of the rear case 16 are screwed together to be attached to the bathtub. I have. The annular fitting flange 41 is formed at one end of the sleeve 18. The annular packing 42 is attached to the sleeve 18 so as to be sandwiched between the side wall 12 of the bathtub and the fitting flange 41 when the rear case 16 and the sleeve 18 are screwed together via the side wall 12 of the bathtub. Fitted outside.

As shown in FIG. 2, at the center of the back surface of the base 19, a cylindrical water pipe 43 is formed so as to protrude, and at a position near the base end of the water pipe 43, the inside of the base 19 is formed. A communicating water opening 44 is provided. A substantially annular concave portion 45 is formed on the inner peripheral side of the surface of the base 19. The plurality of partition walls 46 as the separating means partition the recess 45 into a pair of left and right water-passing recesses 47 and two pairs of upper and lower separating recesses 48 at predetermined intervals.

One of the water-recessed recesses 47 is opened on the peripheral wall side of the base 19, and the other is opened on the surface side, so that bathtub water can flow into the inside from the peripheral wall and the surface of the base 19. ing. Each of the isolation recesses 48 is formed at a regular interval between the pair of water passage recesses 47 so as to form a fan shape, and serves to mix the bathtub water flowing into the pair of water passage recesses 47 with each other. To prevent it.

A pair of cylindrical openings 49 a and 49 b are provided so as to extend from the inner peripheral wall of the water passage recess 47 to the outer peripheral wall of the base 19 in the pair of water passage recesses 47. The extending directions are formed so as to form a C shape. One opening 49a is formed so as to communicate with the water passage pipe 43, and the other opening 49b is formed so as to communicate with the water passage opening 44 formed in the back surface of the base 19. Have been.

Then, the base 19 is attached to the rear case 16 via the sleeve 18 to form the circulation port main body 13. At this time, the water pipe 43 is inserted into the introduction passage 20 and communicates with the introduction passage 20 of the rear case 16. That is, the one opening 49a communicates with the one pipe connection port 23a via the water pipe 43 and the inflow passage 20 of the rear case 16. An inflow passage is constituted by the water pipe 43 and the introduction passage 20. The bathtub water sucked into the circulation port main body 13 passes through one opening 49a, the water pipe 43, the introduction passage 20, and the one pipe connection port 23a.

On the other hand, the water passage opening 44 communicates with the discharge passage 21 of the rear case 16. That is, the other opening 49 b communicates with the other pipe connection port 23 b via the water passage opening 44 and the discharge passage 21 of the rear case 16. An outflow passage is constituted by the water passage opening 44 and the discharge passage 21. The bathtub water heated by the heater passes through the discharge pipe 15, the other pipe connection port 23b, and the discharge passage 21.

As shown in FIGS. 2 and 4, the filter case 50 has a bottomed cylindrical metal case 51 fitted on the surface of a synthetic resin base 55 formed in a bottomed cylindrical shape. It is formed by doing this. A plurality of substantially triangular water holes 52 are provided on the surface of the filter case 50 at equal intervals in the circumferential direction, and a pair of openings 49a and 49b corresponding to the pair of openings 49a and 49b of the base body 19 are provided on the peripheral wall. Through holes 53a and 53b are provided.

Next, the operation of the bathtub circulator 11 of the present embodiment will be described. When the bathtub circulating device 11 of the present embodiment is mounted on a bathtub, first, the sleeve 18 is fitted into the mounting hole 17 provided in the side wall 12 of the bathtub, and the rear surface of the sleeve 18 is inserted into the second male screw portion 40 of the sleeve 18. The sleeve 18 and the rear case 16 are attached by screwing the second female screw portion 39 of the case 16.

Next, the back surface of the base 19 is fitted into the fitting flange 41 of the sleeve 18. At this time, the base 19 is attached while being positioned so that the pair of openings 49a and 49b face obliquely downward. Subsequently, the filter case 50 is fitted to the base 19.

Next, one lock ring 25a is fitted into each of the pair of pipe connection ports 23a and 23b of the rear case 16, and the base ring 26 is engaged with the receiving surface 29 in the pipe connection ports 23a and 23b. I do. Subsequently, a spacer 28 is superimposed on the base ring 26 of the lock ring 25a. Then, the base ring 26 of the other lock ring 25b is engaged with the receiving surface 29 via the base ring 26 and the spacer 28. Then, the first male screw portion 33 of the pressing body 30 is screwed into the first female screw portion 24 of each of the pipe connection ports 23a and 23b. At this time, the lock rings 25a and 25b are positioned and fixed immovably in the axial and circumferential directions by the distal end of the cylindrical portion 31 of the pressing body 30 with the spacer 28 interposed therebetween. As a result, the bathtub circulator 11 including the one-touch joint 54 is configured.

Subsequently, the cylindrical portion 35 of the coring 34 is fitted into the introduction pipe 14 or the discharge pipe 15 connected to the heater, and the inner end face of the flange 36 is engaged with the end face of the introduction pipe 14 or the discharge pipe 15. Push until it fits. Then, the end of the introduction pipe 14 or the discharge pipe 15 on the side where the coring 34 is fitted is inserted into the pipe connection ports 23a, 23b via the pressing body 30, and the outer end face of the flange 36 is connected to the pipe. It is brought into contact with the contact surface 56 provided in the connection ports 23a and 23b. As a result, the end of the introduction pipe 14 or the discharge pipe 15 is connected to the rear case 16 via the one-touch joint 54.

When the bathtub water is heated using the heater, the bathtub water is sucked into the one opening 49 a from the water passage 52 corresponding to the one through hole 53 a and the water passage recess 47. You. Subsequently, the bathtub water is sent to the introduction passage 20 of the rear case 16 via a water pipe 43 as an inflow passage, and is transferred from one of the pipe connection ports 23a into the heater via the introduction pipe 14. You. The bathtub water heated by the heater flows from the discharge pipe 15 into the other pipe connection port 23b, and through the discharge passage 21 of the rear case 16 and the sleeve 18 as an outflow passage, the water passage opening of the base 19 is formed. It flows into 44. Then, the heated bathtub water is discharged from the other opening 49b that functions as a discharge port through the inside of the base 19.

As described above, according to this embodiment, the following effects are exhibited. According to the bathtub circulating tool 11 of this embodiment, the rear case 16 is formed integrally with the pair of pipe connecting portions 22a and 22b that constitute the one-touch joint 54. Pipe connection ports 23a and 23b are formed in the pair of pipe connection sections 22a and 22b, respectively, and first female screw portions 24 are formed in the pipe connection ports 23a and 23b, respectively. By screwing the first male screw portion 33 of the pressing body 30 into the pipe connection ports 23a and 23b, a one-touch joint 54 having a regulating member is formed in the circulation port body 13. Therefore, the number of connection points between the introduction pipe 14 or the discharge pipe 15 and the pipe connection ports 23a and 23b is reduced, and the sealing performance of the transport fluid can be improved.

A restricting member 25 is provided in each of the pipe connection ports 23a and 23b. Therefore, a separate joint can be omitted, the number of parts can be reduced, the introduction pipe 14 or the discharge pipe 15 can be easily connected to the pipe connection ports 23a and 23b, and the manufacturing cost can be reduced. Can be.

According to the bathtub circulating device 11 of this embodiment, when the introduction pipe 14 or the discharge pipe 15 is connected to the pipe connection ports 23 a and 23 b via the one-touch joint 54 formed in the circulation port main body 13, The introduction pipe 14 or the discharge pipe 15 is firmly connected to the pipe connection ports 23a, 23b by lock rings 25a, 25b as regulating members, and can be prevented from falling out of the pipe connection ports 23a, 23b.

According to the bathtub circulating tool 11 of this embodiment, a pair of lock rings 25 a and 25 b as restricting members are provided on the receiving surfaces 29 in the pipe connection ports 23 a and 23 b via the spacers 28. Is engaged. Therefore, the plurality of restricting pieces 27 of the lock rings 25a and 25b engage with the outer surface of the introduction pipe 14 or the discharge pipe 15 to restrict the introduction pipe 14 or the discharge pipe 15 from coming out of the pipe connection ports 23a and 23b. ing. Further, a first female screw portion 24 is formed in the pipe connection ports 23a and 23b, and a first male screw portion 33 formed on the pressing body 30 constituting the one-touch joint 54 can be screwed. Then, the first male screw portion 33 of the pressing body 30 is screwed into the first female screw portion 24 in the pipe connection ports 23a and 23b, respectively, thereby forming a pair of lock rings 25a and 25b in the pipe connection ports 23a and 23b. Can be immovably positioned and fixed by the pressing body 30. As a result, the lock rings 25a, 25b can reliably prevent the introduction pipe 14 or the discharge pipe 15 from falling out of the pipe connection ports 23a, 23b.

According to the bathtub circulator 11 of this embodiment, the circulation port main body 13 is formed of polyacetal (POM), polyphenylene sulfide (PPS) or polyamide (PA) as engineering plastic, Glass fiber is blended in the range of 20 to 40% by weight. Therefore, required strength and heat resistance can be imparted to the circulation port body 13. Further, the circulation port main body 13 can be easily formed.

According to the bathtub circulating tool 11 of this embodiment, the pressing body 30 is screwed into the pipe connection ports 23a and 23b, and the end of the introduction pipe 14 or the discharge pipe 15 is inserted through the pressing body 30. The insertion pipe 14 or the discharge pipe 15 can be connected to the pipe connection ports 23a and 23b only by inserting. Therefore, the work can be easily performed and the work time can be reduced.

The above embodiment can be embodied by being modified as follows. A male screw is formed on the outer periphery of the opening end of each of the pipe connection ports 23a and 23b, and a female screw portion that can be screwed to the male screw is formed on the inner peripheral surface of the cylindrical portion 31 of the pressing body 30. Also in the case of such a configuration, the one-touch joint 54 can be formed in the circulation port main body 13 by screwing the female screw portion of the pressing body 30 to the male screw of the pipe connection ports 23a and 23b. Then, the lock ring 25 in the pipe connection ports 23a, 23b is positioned and fixed immovably, so that the introduction pipe 14 or the discharge pipe 15 can be prevented from falling out of the pipe connection ports 23a, 23b.

The pair of pipe connecting portions 22 a and 22 b are formed so as to extend in a direction orthogonal to the rear case 16. -The number of the lock rings 25 as the restricting member is one or three to five. Also in the case of such a configuration, one or three to five lock rings 25 can restrict the introduction pipe 14 or the discharge pipe 15 from coming out of the pipe connection ports 23a and 23b.

[0041]

[Effect of the invention]

 The present invention has the following effects because it is configured as described above. According to the bathtub circulator of the present invention, the sealability between the discharge pipe or the introduction pipe and the pipe connection port can be improved, and the discharge pipe or the introduction pipe can be formed by reducing the number of parts. The connector can be easily connected to the connection port, and the manufacturing cost can be reduced.

According to the bathtub circulating device of the present invention, in addition to the effects of the present invention, the pipe is controlled by the pressing member so as to be immovably positioned in the pipe connection port by the pressing body. It is possible to reliably prevent the introduction pipe or the discharge pipe from falling out of the connection port.

According to the circulating device for a bathtub according to the third aspect of the present invention, in addition to the effects of the second aspect, required strength and heat resistance can be imparted to the circulation port main body. According to the circulating device for a bathtub of the invention described in claim 4, the effect of the invention described in claim 3 can be further exhibited.

[Brief description of the drawings]

FIG. 1 is a fragmentary front view showing a part of a one-touch joint of a bathtub circulator.

FIG. 2 is an exploded perspective view showing the bathtub circulator of the embodiment.

FIG. 3 is an exploded perspective view showing a one-touch joint and a pipe.

FIG. 4 is a cross-sectional view showing the bathtub circulator of the embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 11 ... Circulating device for bathtub, 12 ... Side wall of bathtub, 13 ... Circulation port main body, 14 ... Introduction pipe, 15 ... Discharge pipe, 20 ... Introduction passage forming an inflow passage, 21 ... Discharge passage forming a outflow passage, 22a .., 22b... Pipe connecting portions constituting a one-touch joint, 23a, 23b.
1st internal thread portion, 25a, 25b ... lock ring as a regulating member, 28 ... spacer forming a one-touch joint,
29: receiving surface, 30: pressing body constituting a one-touch joint, 33: first external thread portion, 43: water passage pipe constituting an inflow passage, 44 ... water passage opening constituting an outflow passage, 49
a, 49b: Opening, 54: One-touch joint.

Claims (4)

[Utility model registration claims] 1. A circulation port main body is attached to a side wall of a bathtub, the circulation port main body is provided with a pair of openings that open into the bathtub, and a synthetic resin discharge pipe attached to a heater outside the bathtub is introduced. A pair of pipe connection ports for connecting the pipes is provided, an outflow passage and an inflow passage are provided to communicate the two openings with the two pipe connection ports respectively, and a discharge pipe and an introduction pipe are inserted into each pipe connection port. A bathtub circulator in which a part of a one-touch joint having a restricting member connected thereto and restricting slipping out of the position is integrally processed. 2. The regulating member comprises a plurality of regulating pieces that are annular and protrude inward, engage with a receiving surface provided in the pipe connection port, and form a female screw or a male screw in the pipe connection port. Provided with a pressing body for holding the regulating member engaged with the receiving surface in the pipe connection port,
The bathtub circulator according to claim 1, wherein a male screw portion or a female screw portion to be screwed with the female screw or the male screw of the pipe connection port is formed on the pressing body. 3. The bathtub circulation device according to claim 2, wherein the circulation port main body is formed of engineering plastic. 4. The bathtub circulator according to claim 3, wherein the engineering plastic is polyacetal, polyphenylene sulfide, or polyamide, and contains glass fiber.