JPH0336607Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) This invention relates to a connection structure between a connection part of a faucet body and a water discharge pipe.

(Prior Art) Conventionally, when connecting a water discharge pipe to a faucet main body, a ring is used to prevent play in the water discharge pipe, as shown in Fig. 6 of Japanese Utility Model Publication No. 60-29510 (Fig. 6 of the drawing of the present application). Figure 5). To briefly explain the above FIG. Plug body mouth end surface 3
An uneven portion 34 intersecting the circumferential direction of the ring 31 is provided on the contact surface with the ring 31, and when the water discharge pipe 37 and the faucet main body 35 are connected by the cap nut 38, the uneven portion 3
4 generates a compressive deformation force in the direction of the center of the ring 31, which presses and clamps the water discharge pipe 37, thereby allowing the water discharge pipe 37 to rotate and at the same time preventing rattling during rotation. be.

In the case of the above, the contact area between the uneven part of the ring and the end face of the faucet body is small, so the adhesion is poor, and the looseness cannot be prevented unless the cap nut is firmly tightened. There was an inconvenience in that it was difficult to rotate the water pipe from side to side. Therefore, if the cap nut loosens even a little over time, it immediately becomes loose, which in turn causes water leakage.

(Problem to be solved by this invention) The problem to be solved by this invention is to tightly connect the discharge pipe to the connection part for attaching the discharge pipe of faucets, and prevent the frequent rotation of the discharge pipe. It is also important to ensure that it does not easily rattle or cause water leakage.

(Means for Solving the Problems) The technical means taken by the present invention to solve the above problems is that the ring, which is the main part of the connecting means for connecting the connecting part of the faucet body and the water discharge pipe, Molded from synthetic resin, the inner circumferential surface has an inner flange that fits into a ring groove provided at the base of the water discharge pipe, and the outer circumferential surface has an annular protruding flange that comes into contact with the opening side periphery of the connecting section. At the same time, a plurality of ribs are arranged at intervals on the circumferential surface of the flange, and a notch is provided across the annular part of the ring to provide flexibility in the circumferential direction, The ring is previously fitted into the ring groove of the water discharge pipe using the notch, and the base of the water discharge pipe is fitted into the base insertion hole of the connecting portion under pressure, thereby removing the rib. is tightly fitted into the base insertion hole, and is pressure-tightened via a cap nut so that the base flange is firmly pressed against the opening side periphery.

(Function) By fitting the inner flange of the ring into the ring groove of the faucet pipe in advance, and by fitting the base of the faucet pipe into the base insertion hole of the faucet body under pressure, the flange The multiple ribs arranged on the circumferential surface of the ring fit tightly together so as to be crushed inside the base insertion hole, and the inner flange of the ring strongly presses against the ring groove of the water discharge pipe. and pressurize the flange to the opening-side periphery of the connecting portion.

(Example) Hereinafter, an example of this invention will be described in detail based on the drawings.

As shown in FIGS. 2 to 4, the ring 1 of this invention has an annular shape formed by molding synthetic resin, and has a ring groove 8 formed in the base 9 of the water discharge pipe 7, which will be described later, fitted on the inner peripheral surface. The inner flange 2 has an annular protruding flange 5 on its outer circumferential surface that comes into contact with the opening-side periphery 3 of the connecting portion 11 of the faucet body 10, which will be described later. Slightly tapered multiple ribs 4
are arranged at intervals, and by cutting a part of the annular shape of the ring 1 in the axial direction, a notch 6 is provided to allow flexibility in expansion and contraction in the circumferential direction.

The faucet main body 10 is a single faucet, a mixed faucet, a branch faucet, etc., and in the embodiment, a mixed faucet is shown.
As shown in the figure, the connecting portion 11 of the faucet body 10 is provided with a base insertion hole 12 on the fluid outflow side leading to the mixing chamber 16, and an O-ring 17 is interposed in the base insertion hole 12. The water discharge pipe 7 has the connection part 11 at one end.
The base 9 is provided with a ring groove 8 that is diagonally fitted with the inner flange 2 of the ring 1, and the ring groove 8 is fitted with the inner flange 2 of the ring 1. The base 9 thus joined is fitted into the base insertion hole 12 with pressure, and the flange 5 of the ring 1 is inserted into the base insertion hole 12.
After contacting the peripheral edge 3 on the opening side of the nut 18,
is fastened to the threaded portion 15 of the faucet body 10 to constitute a coupling means A between the faucet body 10 and the water discharge pipe 7.

Now, in order to rotatably connect the water discharge pipe 7 to the faucet main body 10 via the connecting means A, first tighten the bag nut 1.
8 into the base 9 of the water discharge pipe 7 with a loose fit,
The O-ring 17 is inserted deep inside the base insertion hole 12 of the faucet body 10. Next, the ring 1 is fitted onto the base 9 of the water discharge pipe 7 while expanding in the circumferential direction due to the flexibility of the notch 6, and the inner flange 2 of the ring 1 is fitted into the ring groove 8 of the water discharge pipe 7. When the water discharge pipe 7 with the ring 1 attached to the ring groove 8 is inserted with pressure into the base insertion hole 12 of the faucet body 10, the tapered rib 4 provided on the ring 1 is inserted into the faucet body 10. comes into contact with the inner circumferential surface of the base insertion hole 12 and is gradually compressed, and at the same time, the inner flange 2 is strongly pressed against the ring groove 8 of the water discharge pipe 7. Next, insert the cap nut 18 that was loosely fitted into the base 9 in advance into the faucet main body 1.
Tighten it to the threaded part 15 of 0. This bag nut 18
By tightening the flange 5 of the ring 1, the connecting part 1
1, the water spout 7 and the ring 1 are tightly connected to each other, and there is no gap between them, thereby reliably preventing rattling of the water spout 7 and water leakage.

(Effects) Since this invention has the above configuration, it has the following advantages.

(1) A ring that connects the connection part of the faucet body and the water discharge pipe in a watertight and rotatable manner.
A ring-shaped flange that comes into contact with the opening side periphery of the connecting part is provided on the outer peripheral surface of the faucet, and a plurality of ribs are arranged at intervals on the periphery of the flange, so that the water discharge pipe can be connected to the faucet body. When inserted into the base insertion hole with pressure, the rib comes into contact with the inner peripheral surface of the base insertion hole so as to be crushed, and the inner flange of the ring fits strongly and tightly into the ring groove of the water discharge pipe, and the ring By strongly tightening the flange with the cap nut, the flange is firmly pressed against the opening side periphery of the connecting part.
Even when the water discharge pipe is rotated frequently, it does not easily rattle, and water leakage can be reliably prevented.

(2) Pressure-fit the base of the water pipe into which the ring is fitted into the base hole of the faucet body in one motion, crushing the rib of the ring into the base hole. At the same time, the inner flange of the ring is brought into close contact with the ring groove of the water pipe, so even if the cap nut loosens while rotating the water pipe frequently, there will be no play in the water pipe. There is no risk of water leakage.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway side view of the water discharge pipe connected to the faucet main body via the proposed connection means;
The figure is an enlarged plan view of the ring, FIG. 3 is a side sectional view taken along the line X-X in FIG. 2, FIG. The figure is an explanatory diagram of the prior art. Explanation of the symbols of the main parts, 1...Ring, 2...
Inner flange, 3...opening side periphery, 4...rib, 5...
Flange, 6... Notch, 7... Water pipe, 8... Ring groove, 9... Base, 10... Faucet body, 11...
Connecting portion, 12... Base insertion hole, 18... Cap nut,
A...Connecting means.

Claims (1)

[Scope of utility model registration request] Connecting portion 11 of faucet body 10 and base 9 of water discharge pipe 7
In the coupling means A, the ring 1 which constitutes the main part of the coupling means A has an inner flange part 2 formed by molding synthetic resin on its inner circumferential surface which fits into the ring groove 8 provided in the base part 9. On the outer circumferential surface, a collar portion 5 that comes into contact with the opening-side peripheral edge 3 of the connecting portion 11 is provided in an annular shape, and a plurality of ribs 4 are arranged at intervals on the circumferential surface of the collar portion 5. , a notch 6 is provided in an annular part of the ring 1 to provide flexibility in the circumferential direction, and the flexibility allows the ring 1 to be
is fitted into the ring groove 8 of the water discharge pipe 7 in advance, and the base 9 of the water discharge pipe 7 is fitted into the base insertion hole 12 of the connecting part 11 with pressure, thereby the rib 4 is inserted into the base part. The flange 5 is attached to the opening side periphery 3 via a cap nut 18 so as to tightly fit into the insertion hole 12 and firmly press the flange 5 against the opening side periphery 3.
A connecting structure for water discharge pipes in faucets, which is characterized by pressure tightening.