JPH09166357A - Circulation port for bathtub - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make fitting operability excellent. SOLUTION: A sleeve 15 is fixed in a through hole 14 of the side wall 13 of a bathtub 12. A circulation port main body 17 is inserted and fixed to the inner periphery of the sleeve 15. The circulation port main body 17 has an opening for intake of bathtub water and an opening for discharge thereof. Between the sleeve 15 and the circulation port main body 17, pawls 49 and projecting threads 33 for positioning the circulation port main body 17 in the engaging relation of recessions with projections are provided. Between the sleeve 15 and the circulation port main body 17, besides, pawls 35 and grooves 36 for preventing slip-off of the circulation port main body 17 in the engaging relation of recessions with projections are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circulation port for connecting a pipe for circulating bath water through an external heater to the bath.

[0002]

2. Description of the Related Art As this type of circulation port, for example, a configuration disclosed in Japanese Patent Laid-Open No. 5-196295 is known. In this configuration, since the bath water can be sucked in and blown out of each other, a forward pipe for sending the bath water to the external heater and a return pipe for returning the bath water heated from the heater into the bath are provided. Can be connected without distinction.

[0003]

However, in the structure of the conventional structure, the circulation port is fastened and fixed near the bottom surface of the bathtub by a fastener such as a screw when the circulation port is mounted. For this reason, the construction worker is forced to have a cramped and troublesome work posture in the bathtub, and moreover, there is a risk that the screw or the like may drop into the drainage port.

The present invention has been made by paying attention to the problems existing in such conventional techniques. An object of the invention is to provide a bathtub circulation port having excellent mounting workability.

[0005]

In order to achieve the above-mentioned object, in the invention of claim 1, it is fixed through the side wall of the bathtub.
At a bathtub circulation port for circulating bathwater between an external heater and the inside of the bathtub, a sleeve fixed to a through hole in the side wall of the bathtub and inserted and fixed to the inner circumference of the sleeve, A circulation port main body having a water intake opening and a water discharge opening is provided, and a positioning means for positioning the circulation port main body in a concave-convex engagement relationship between the sleeve and the circulation port main body, and the same concave and convex. And a slip-out prevention means for preventing the circulation port main body from slipping out due to the engagement relationship of.

According to the second aspect of the present invention, in the first aspect,
The positioning means is composed of a protrusion formed on the inner peripheral surface of the sleeve and a claw formed on the back surface of the circulation port body. According to a third aspect of the present invention, in the first or second aspect, the slip-out preventing means includes a groove formed on the outer circumference of the sleeve and a claw formed on the circulation port main body.

According to the invention of claim 4, in claim 3,
The claws that constitute the slip-out preventing means are formed on the outer circumference of the circulation port main body, and the claws are located between the plurality of split grooves formed on the outer circumference of the circulation port main body.

Therefore, according to the inventions of claims 1 to 3, fastening work such as a screw is not required for installation work, and workability is improved. According to the invention of claim 4, the circulation port main body can be removed from the sleeve by bending the portion between the split grooves.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of the present invention will be described below with reference to FIGS. As shown in FIGS. 1 to 4, in the present embodiment, the circulation port 11 has a bathtub 12
A sleeve 15 fixed to the through hole 14 of the side wall 13 of
It includes a circulation port body 17 that is inserted and fixed in the sleeve 15 and is connected to the forced circulation pipe 16 of the heater, and a filter case 18 that is engaged with the circulation port body 17 in the bath 12.

A rear case 19, which is connected to the forced circulation pipe 16 on the outside of the bathtub 12 and is arranged in a watertight manner on the outside of the side wall 13 of the bathtub 12, is fixed to the sleeve 15. Further, the circulation port body 17 has a partition plate 21 having a water passage circuit 20 for sending bath water to the heater and returning it in the bathtub 12, and a partition cover 22 covering the front surface of the water passage circuit 20.

The rear case 19 is made of metal, and its rear end portion 23 has two pipe connection ports connected to the forward pipe 24a and the return pipe 24b of the forced circulation pipe 16 of the heater outside the bath 12. 25a and 25b are provided, and one of the pipe connection ports 25a is connected to the inner chamber 26 at the center and the other pipe connection port 25b is connected to the outer chamber 27 at the outer periphery. An O-ring 28 is fitted on the inner circumference of the inner chamber 26 on the opening side. On the inner peripheral surface of the rear case 19 on the opening side, a screw thread 29 that is fastened to the sleeve 15 is cut, and a flange portion 30 is formed. The packing 31 is covered with the flange portion 30 to ensure watertightness between the packing 31 and the outer surface of the side wall 13. The sleeve 15 is made of synthetic resin, and has a screw thread 3 that is fastened to the rear case 19 on the outer peripheral surface.
2 is cut, and a plurality of (a pair in the embodiment) protrusions 33 extending in the axial direction are formed to project on the inner peripheral surface. The flange 34 is formed at one end of the sleeve 15, and an engaging groove 36 is formed on the outer peripheral surface of the flange 34. The packing 37 ensures watertightness between the flange 34 and the inner surface of the side wall 13.

As shown in FIGS. 2 and 3, the partition plate 2
A plurality of split grooves 38 are cut to a predetermined depth on the outer periphery of the groove 1, and recesses 40 are formed between the split grooves 38 to which the partition plate mounting projections 39 of the filter case 18 are engaged. Between the split grooves 38 in the upper part on the front side of the partition plate 21,
Recess 4 for accommodating the position control piece 41 of the partition cover 22
2 are provided. The partition plate 21 has a partition cover 2
A plurality of fastening holes 43 for fastening 2 are formed, and the water passage circuit 20 is provided as a recess. on the other hand,
On the back side of the partition plate 21, a tubular insertion portion 44 that is inserted into the inner chamber 26 of the rear case 19 and that allows passage of bath water is formed in a protruding manner.

As shown in FIG. 4, the pair of water passages 45a, 45b constituting the water passage circuit 20 are recessed in the front surface of the partition plate 21, and the opening 4 provided in the side edge of the partition plate 21.
It is bent in a substantially V shape toward 6a and 46b. The auxiliary openings 47a and 47b are opened forward at the lower portions of both of the bent portions and communicate with the water passages 45a and 45b. The auxiliary openings 47a and 47b are arranged at positions slightly lower than the openings 46a and 46b, respectively.

The one side edge opening 46a is communicated with the water passage 45a through the inside of the insertion portion 44 to the inner chamber 26 of the rear case 19, and the other side edge opening 46b is connected to the water passage 45a.
hole 48 formed near the outer periphery of the insertion portion 44 through b
To the outer chamber 27 of the rear case 19.

As shown in FIG. 3, on the back side of the partition plate 21, a plurality of rotation preventing tabs 49 which are engaged with the protrusions 33 of the sleeve 15 in a concave-convex relationship, and an engaging groove 36 of the flange 34.
A pull-out preventing tab 35 that is engaged with is formed to project.

Then, the insertion portion 44 is inserted into the inner chamber 26, the ridge 33 and the rotation prevention tab 49 and the engagement groove 36 and the removal prevention tab 35 are engaged with the partition plate 21 of the circulation port body 17, respectively. It is attached to the sleeve 15. Also,
When removing the partition plate 21 from the sleeve 15, the portion between the split grooves 38 may be curved forward to prevent the slip-out preventing tab 35.
Is disengaged from the engagement groove 36.

As shown in FIG. 3, water passage ridges 50 for forming water passages 45a and 45b are formed on the back surface of the disk-shaped partition cover 22, and both auxiliary openings 4 are formed.
A pair of openings 51 for opening 7a and 47b to the front
a and 51b are opened. In addition, the partition cover 22
An arc-shaped position regulating piece 41 that engages with the concave portion 42 of the partition plate 21 is formed on the upper portion so as to project, and a plurality of notches 52 for avoiding interference with the partition plate mounting projection 39.
Is provided.

Then, the partition cover 22 is engaged so as to cover the front surface of the partition plate 21, and is fastened to the fastening hole 43 with a screw or the like to define both water passages 45a and 45b and to form the side edges. Opening 46 and front auxiliary opening 47
Is formed. The partition cover 22 is fastened before the partition plate 21 is engaged with the sleeve 15.

As shown in FIGS. 3 and 5, the filter case 18 has a plurality of triangular openings 53 arranged on the front surface.
A pair of matching openings 54 are provided to face the side edge openings 46, and a net 55 is fitted in all the openings. The partition plate mounting projections 39 are bent and formed at a plurality of locations on the inner circumference of the side surface.
While aligning the notch 52 of the partition cover 22 with the partition plate 2
The filter case 18 is attached by engaging with the recess 40 of No. 1.

Based on the above configuration, for example, the pipe connection port 25a is connected to the outflow pipe 24a, and the pipe connection port 25b is connected to the return pipe 24b. Then, when the bath water is circulated by the heater outside the bath 12, the bath water is filtered by the net 55 of the filter case 18, and the opening 46 on one side is formed.
a and an auxiliary opening 47a communicating therewith to a water passage 45a
Is sucked into and is sent from the inside of the insertion portion 44 through the inner chamber 26 of the rear case 18 into the forward pipe 24a of the forced circulation pipe 16. The bath water heated by the heater is returned to the forced circulation pipe 16 again and returned to the rear case 1 through the return pipe 24b.
9 flows into the outer chamber 27 and the water passage 45b, and is discharged into the bathtub 12 through the opening 46b and the auxiliary opening 47b.

When attaching the circulation port 11 of this embodiment, the sleeve 15 is passed through the through hole 14 of the side wall 13 of the bathtub 12, the sleeve 15 and the rear case 19 are screwed together, and the packings 31, 37 are attached. Watertightness is maintained by pressure welding. Then, the partition plate 21 with the partition cover 22 assembled therein is inserted into the sleeve 15, and the partition plate 21 is positioned so that the openings 46a and 46b on both sides are located on the horizontal line. Engage with the claw 49. Therefore, in this state, the partition plate 2
1, that is, the circulation port body 17 is positioned.

At the same time as positioning the circulation port body 17,
The slip-out preventing tab 35 of the partition plate 21 is engaged with the engagement groove 36 of the sleeve 15 by the elasticity of the portion between the split grooves 38, and the circulation port main body 17 is prevented from slipping off. Finally, the filter case 18 is attached to the circulation port body 17.

In order to remove the circulation port body 17 from the sleeve 15 for cleaning the circulation port 11 or the like, the filter case 18 is removed and the portion between the split grooves 38 of the partition plate 21 is curved toward you. For example, the slip-out preventing tab 35 is disengaged from the engaging groove 36, so that it can be easily removed.
According to this embodiment configured as described above, the following effects are achieved.

(A) The circulation port body 17 can be attached to the sleeve 15 with one touch without using attachment parts such as screws and screws, and the attachment is easy. Further, even when detaching, it is easy because the portion between the split grooves 38 may be curved.

(B) Since the mounting parts such as screws and screws are not used as described above, the number of parts is reduced,
Product cost can be reduced, and inconvenience due to loss of parts can be prevented.

(C) After the circulation port body 17 is attached, the partition plate 21 does not naturally bend, and the engaging groove 3 is carelessly formed.
The disengagement prevention tab 35 is prevented from coming off from 6. The present invention can be embodied in the following modes.

(1) The partition plate 21 and the partition cover 22 are integrally formed. (2) The rotation preventing tabs 49 and the protrusions 33 that form the positioning means are provided on the outer peripheral portions of the partition plate 21 and the sleeve 15, respectively.

[0028]

As described above, according to the present invention, the following excellent effects can be obtained. According to the inventions of claims 1 to 3, the mounting work can be facilitated, the product cost can be reduced, and the loss of parts can be prevented.

According to the fourth aspect of the invention, the circulation port main body can be easily removed for cleaning or the like.

[Brief description of the drawings]

FIG. 1 is an exploded sectional view showing a circulation port.

FIG. 2 is an exploded perspective view of the same.

FIG. 3 is an exploded perspective view of the same.

FIG. 4 is a front view of a partition plate.

FIG. 5 is a rear view showing the filter cover.

[Explanation of symbols]

11 ... Circulation port, 12 ... Bathtub, 13 ... Side wall, 15 ... Sleeve, 16 ... Forced circulation piping, 17 ... Circulation port main body, 19 ... Rear case, 35 ... Pull-out prevention claw, 36 ... Engagement groove, 41 ...
Position control pieces, 42 ... Recesses, 49 ... Rotation prevention tabs.

Claims (4)

[Claims] 1. A sleeve fixed to a through hole of a side wall of a bathtub, which is fixed to a side wall of the bathtub by penetrating and fixing the side wall of the bathtub to circulate bath water between an external heater and the inside of the bathtub. And a circulation port body inserted into and fixed to the inner periphery of the sleeve and having a suction opening and a discharge opening for bath water, and the sleeve and the circulation opening body circulate in a concave-convex engagement relationship. A circulation port for a bath provided with positioning means for positioning the mouth body and withdrawal prevention means for preventing the circulation port body from coming off due to the engagement relationship of the concave and convex portions. 2. The bath circulation port according to claim 1, wherein the positioning means includes a protrusion formed on the inner peripheral surface of the sleeve and a claw formed on the back surface of the circulation port main body. 3. The circulation port for a bathtub according to claim 1, wherein the slip-out preventing means includes a groove formed on the outer periphery of the sleeve and a claw formed on the circulation port body. 4. The claw forming the slip-out preventing means is formed on the outer periphery of the circulation port main body, and the claw is located at a portion between a plurality of split grooves formed on the outer periphery of the circulation port main body. Circulation opening for bathtub.