JPH0312329Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application and overview of the invention] The present invention relates to a type of heater that circulates and heats the inside of a bathtub, that is, a filter device that is attached to the mouth of the bathtub on the bathtub side. By improving the mounting structure, the filter device can be easily installed.

[Prior art and its problems] This type of filter device has already been developed in 1983.
-There is one described in Publication No. 11916.

This product is adopted in a bathtub as shown in FIG. 6, and is attached to the bathtub side opening of a pair of communication pipes 1, 1 below which connect bathtub A and bathtub B.

For this reason, in this conventional method, as shown in Fig. 7,
The filter device 2 is composed of a net 21, a disk 22, and a case 23, and a fixing ring 24 is attached between the cylindrical screw 12 screwed into the mouth of the communication pipe 1 and the side wall of the bathtub A. , the bent end portions 20 of the engaging legs 25, 25 protruding from the case 23 of the filter device 2 are engaged with the ring 24.

In this case, a ring 24 is fixed by a cylindrical screw 12 that is screwed into the connecting pipe 1, and this ring 24
Since the engagement relationship between the filter device 2 and the engagement legs 25, 25 is secure, the attachment state of the filter device 2 is secure, and there is no fear that the filter device 2 will easily come off. As long as the screw 12 is present, it can be attached and removed as necessary, regardless of the type of thread.

However, with this conventional filter device, the installation work of the filter device 2 is troublesome.

As a solution to this inconvenience, the Jikoko 52-
Publication No. 44217 proposes a structure in which a plurality of elastic claws are provided on the outer periphery of the body of a cylindrical body provided in a filter. When press-fitted, since the elastic claw is configured to extend from the tip of the cylindrical body toward the filter device 2, the tip of the elastic claw engages with the inner circumferential surface of the cylindrical screw 12 to prevent it from coming out. will be held.

Therefore, in this prior art, the filter device 2 can be assembled by simply press-fitting the cylindrical body into the cylindrical screw 12.
This has the advantage that it can be attached and fixed to the open end of the cylindrical screw 12.

However, in this prior art, the cylindrical body and the elastic claw are joined by welding, so
Assembling this part is troublesome, and the filter device 2 is easily disengaged because it is engaged in a retaining state by a long and thin band-shaped elastic claw and is disengaged when a certain external force is applied. There is a problem.

The present invention is a filter device 2 that is attached to a cylindrical screw 12 screwed into the bathtub side opening of a communication pipe 1 connecting a bathtub B and a bathtub A.
A plurality of elastic claws 3, 3 are attached to the outer periphery of a cylindrical body extending from one side, and the cylindrical body equipped with these elastic claws 3, 3 is press-fitted into the cylindrical screw 12 to complete the filter device. 2 is installed and fixed on the cylinder screw 12. In the filter device for the bathtub,
The object is to make the assembly of elastic claws 3, 3 easy and to prevent a filter device from easily coming off.

[Means] The technical means of the present invention taken to solve the above problems are as follows: A cup-shaped case body 32 made of synthetic resin, and a dish-shaped synthetic resin case body 32 that is removably attached to the open end of the cup-shaped case body 32. The lid body 31 and the case body 3
The filter device 2 is composed of a dust removal net 21 that closes a window provided in the lid 31, and a concentric water inlet 34 is provided in the center of the lid 31.
A plurality of legs 26, 26 are made to protrude from the back surface of the body, these legs 26, 26 are arranged on a circumference concentric with the water inlet 34, and each leg 26 is opened at its outer peripheral surface and tip. A T-shaped dovetail groove 35 is formed, and a bent tip 36 having a width narrower than the width of the open part of the dovetail groove 35 on the body side extends from the tip of the substantially rectangular plate portion in an inclined state. The claws 3 are accommodated in each dovetail groove 35, and the plate-shaped portion of the elastic claw 3 is press-fitted between the bottom side walls of the dovetail groove 35, and the bent tip portion 36 is bent obliquely from the tip side to the base end side of the leg body 26. make it stand out,
The length of the bent tip 36 is set relatively short, and the diameter of the cylindrical shape constituting the outer peripheral surface of the legs 26, 26 is set slightly smaller than the inner diameter of the cylindrical screw 12.

[Effect] The technical means of the present invention works as follows.

Combining the lid 31 and the case body 32 forms the filter device 2, and when the legs 26, 26 group provided on the lid 31 are press-fitted into the cylindrical screw 12,
The tips of the bent tips 36 of the elastic claws 3 provided in the dovetail grooves 35 of the legs 26, 26 engage in one-way engagement with the inner wall of the cylindrical screw 12, and the filter device 2 is held by the cylindrical screw 12 in a state where it is prevented from coming off. The Rukoto. In this holding state, the elastic claw 3 is engaged and held in such a manner that both side edges of its plate-like portion are press-fitted between both side edges in the dovetail groove 35, so that the elastic claw 3 and the leg body 2
The bonding strength with 6 is sufficient. Further, since the bent tip 36 provided at the tip of the elastic claw 3 is set relatively short, the engagement strength between the bent tip 36 and the inner circumferential chamfer of the cylindrical screw 12 is sufficient. Further, since the width of the bent tip portion 36 is set smaller than the width of the open portion on the outer circumferential side of the leg body 26 of the dovetail groove 35, the diameter of the cylindrical shape constituting the outer circumferential surface of the leg bodies 26, 26 Even if the diameter of the legs 26 and 26 group is set to approximately match the inner diameter of the cylindrical screw 12,
2, each bent tip 36
is bent into the dovetail groove 35, and the bent tip portions 36, 36 are firmly engaged with the inner circumferential surface of the cylindrical screw 12.

When assembling the elastic claws 3 to each of the legs 26, the plate-shaped portions of the elastic claws 3 are press-fitted from the openings on the distal ends of the legs 26, so that the elastic claws 3 are attached and held in the manner detailed above.

[Effects] Since the present invention has the above configuration, it has the following unique effects.

Since the engagement strength between the tips of the bent tip portions 36, 36 and the inner circumferential surface of the cylindrical screw 12 is sufficient, the attachment strength of the filter device 2 is sufficient and it will not come off easily.

Since the elastic claw 3 is attached to the leg body 26 by simply press-fitting the elastic claw 3 having the bent tip 36 into the dovetail groove 35, assembly of the elastic claw 3 is easy.

[Example] Next, an example of the present invention described above will be described in detail with reference to the drawings.

As shown in FIG. 1, the case 23 includes a case body 32 and a lid 31 that covers the opening of the case body 32.

1 and 4 on the peripheral side wall of the case body 32.
As shown in the figure, windows 27, 27 are cut and covered with dust removal nets 21, 21. Further, the periphery of the open end of the case body 32 is deformed outward to form a large diameter portion 28, and a plurality of engagement protrusions 29 are provided on the inner peripheral wall of the large diameter portion 28. There is.

On the other hand, a flange 33 that engages with the engagement protrusions 29, 29 projects from the case body 32 side of the lid 31.

Further, the central portion of the lid 31 is hollowed out in a circular shape to form a water inlet 34, and leg bodies 26, 26 are arranged and protruded from the periphery of the water inlet 34. The legs 26, 26 groups arranged in a cylindrical shape correspond to the cylindrical body described in the above-mentioned technical means section.

On the outer surfaces of the legs 26, 26, elastic claws 3, 3, as shown in FIG. A dovetail groove 35 as shown in FIG.
, and projecting portions 30 , 30 located on both sides of the elastic claw 3 are fitted into the dovetail groove 35 .

The elastic claw 3 is installed in the dovetail groove 35 of the leg body 26, and the lid body 31 is further fitted into the case body 32 so that its collar 33 engages with the engagement protrusions 29, 29 of the case body 32. Then, the filter device 2 of the embodiment of the present invention is completed, in which the opening of the case body 32 is covered with the lid 31 as shown by the imaginary line in FIG.

To attach the filter device 2 to the bathtub-side opening of the communication pipe 1, as shown in FIG. Just push it in.

Connect the legs 26, 26 of the filter device 2 to the cylindrical screw 1.
2, the bent tips 36, 36 of the elastic claws 3, 3 disposed on the outer surface of each leg 26, 26
is in pressure contact with the inner circumferential surface 13 of the cylindrical screw 12, thereby fixing the filter device 2.

In this installed state, the water circulating between the bathtub A and the bathtub B is filtered by the net 21 disposed in the peripheral window 27 of the filter device 2 and enters the filter device 2. The filtered water is sent to the bathtub B through the communication pipe 1 from a water inlet 34 formed by hollowing out the center of the lid 31.

In the above embodiment, the legs 26, 26 are arranged in a circle, but instead of the legs 26, 26, a single cylindrical body is formed, and elastic claws 3, 3 are provided on the outer peripheral surface of the cylindrical body.
may be placed. In this case, this cylindrical body corresponds to the cylindrical body described in the above-mentioned technical means section.

[Brief explanation of drawings]

FIG. 1 is an exploded sectional view of the embodiment of the present invention, FIG. 2 is a perspective view of the elastic claw 3, and FIG. 3 is a front view of the lid 31.
4 is a front view of the case body 32, FIG. 5 is an explanatory diagram of the installation of the filter device 2, FIG. 6 is an explanatory diagram of the piping between the bathtub and the bath pot, and FIG. 7 is an explanatory diagram of a conventional example. Inside, 1...Connection pipe, 2...Filter device, 3...
Elastic claw, 12... cylinder screw, 26... leg body, A...
Bathtub, B...bath pot.

Claims (1)

[Scope of utility model registration request] A filter device 2 is attached to a cylindrical screw 12 screwed into the bathtub side opening of a communication pipe 1 connecting a bathtub B and a bathtub A, and is attached to the outer periphery of a cylindrical body extending from one side of the filter device 2. A bathtub in which a plurality of elastic claws 3, 3 are attached, and the cylindrical body equipped with these elastic claws 3, 3 is press-fitted into the cylindrical screw 12 to fix the filter device 2 to the cylindrical screw 12. The filter device for a pot includes a cup-shaped case body 32 made of synthetic resin, and a dish-shaped lid body 31 made of synthetic resin that is removably attached to the open end of the case body 32.
and a dust removal net 21 that closes the window provided in the case body 32. A concentric water passage hole 34 is provided in the center of the lid 31, and a plurality of water holes are provided on the back surface of the lid 31. leg body 26,
26 protrudes, these legs 26, 26 are arranged on a circumference concentric with the water inlet 34, and each leg 26 is formed with an inverted T-shaped dovetail groove 35 that is open on its outer peripheral surface and tip. The elastic claw 3 has a bent tip 36 having a width narrower than the width of the open portion of the body side of the dovetail groove 35 extending in an inclined state from the tip of the substantially rectangular plate portion.
are housed in each dovetail groove 35, the plate-shaped portion of the elastic claw 3 is press-fitted between the bottom side walls of the dovetail groove 35, and the bent tip 36 projects diagonally from the tip side to the base end side of the leg body 26. The length of the bent tip 36 is set relatively short, and the diameter of the cylindrical shape formed by the outer peripheral surface of the legs 26, 26 is set slightly smaller than the inner diameter of the cylindrical screw 12. filter device.