JPH057339Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field of the Invention) This invention relates to an improvement in a connection mechanism between a faucet body and a rotatable water discharge pipe.

This idea can be applied not only to ordinary household faucets, but also to connection mechanisms for water pipes used in water heaters, solar heaters, and other devices.

(Prior art) A conventional example of this type is as shown in FIG.
One side of the water discharge pipe 52 is inserted into the outlet end of the faucet main body 50, and a cap nut 54 is screwed onto the outer periphery of the connecting portion.

More specifically, a packing groove 56 is formed on the inner periphery of the outlet end of the faucet body 50, and a packing 58 is attached to the packing groove 56.

An annular recess 60 is formed in the axial direction of the outer periphery near one end of the water discharge pipe 52, and a ring 62 is attached to this recess 60 to prevent the water discharge pipe 52 from slipping out from the faucet body 50. ing.

In this type of conventional technology, a packing 58 and a ring 62 are installed between the cap nut 54 and the water discharge pipe 52 at the connecting portion between the faucet body 50 and the water discharge pipe 52 to prevent water leakage and to connect the faucet body 50 and the water discharge pipe 52. The connection of the water discharge pipe 52 is designed to be rotatable.

(Problems with the prior art) On the other hand, in the prior art described above, the faucet main body 50
Although the circular hole 64 into which the mounting side of the water discharge pipe 52 is inserted, which is provided inside the packing groove 56, is formed into a substantially perfect circle by cutting during production of the faucet body 50, the water discharge pipe 52 Since the pipe itself is usually made of a relatively thin metal pipe, when cutting the pipe, machining the recess 60 for attaching the ring, etc., the side where the water discharge pipe 52 is attached to the faucet main body 50 is particularly The reality is that it is easily deformed, and its cross-sectional form is usually no longer a perfect circle.

Therefore, the diameter of the circular hole 64 of the faucet main body 50 is set to be larger than the outer diameter of the water spout 52 in anticipation of the deformation on the mounting side of the water spout 52 and with some allowance. That was normal.

Therefore, although it is possible to insert the attachment side of the water spout 52 into the circular hole 64 of the faucet body 50 and rotatably attach the water spout 52 to the faucet body 50, the outer periphery of the water faucet 52 and the water The occurrence of a gap between the plug body 50 and the circular hole 64 could not be avoided.

In other words, when a slight stress is applied during use, the faucet main body 50 and the water discharge pipe 52 are
A ring 6 attached to an annular recess 60 formed in
2. Since the result is that it is only connected and supported at one place, use this connected and supported part as a fulcrum,
The spouting pipe 52 crosses the axis of the faucet main body 50 by the amount of the gap created between the circular hole part 64 and the outer periphery of the spouting pipe 52, and the tip of the spouting pipe 52 on the discharge side Furthermore, a bad phenomenon occurred in which side contact became more intense.

For this reason, the water discharge pipe 52 has a poor usability and cannot be used smoothly, resulting in the problem of water leakage.

(Technical problem of the invention) Therefore, in order to solve the problems of the prior art described above, this invention has been developed to connect the water discharge pipe inserted into the circular hole in the faucet body to the side of the circular hole in the faucet body. By controlling the spout pipe so that it can rotate freely at two points on the annular recess side of the spout pipe provided near the outlet end of the faucet body, it is possible to suppress the accidental movement of the spout pipe during use. It is intended to.

Furthermore, the purpose is to eliminate the discomfort of using the water discharge pipe, reduce failure of the connection part of the water discharge pipe, and prevent water leakage from easily occurring.

(Technical means of the invention) In order to achieve the above object, this invention provides a thread on the outer periphery of the outlet end of the faucet body, and a packing groove and a packing groove on the inside of the end. A circular hole portion with a diameter slightly larger than the outer diameter of the water discharge pipe is provided inwardly and continuous with the packing groove, and the packing is installed in the packing groove, and the water discharge pipe is attached to the faucet body on the installation side. An annular recess is formed on the outer periphery of the faucet, a ring is supported in the recess, and the mounting side of the water discharge pipe supporting the ring is inserted from the outlet end of the faucet body into the circular hole. , the ring supported in the recess faces the packing installed in the packing groove, and a tightening nut is screwed onto the screw of the faucet body surrounding the ring to connect the water discharge pipe to the faucet body. In a water discharge pipe connection device for a faucet, which is rotatably installed in a faucet, the cylindrical pipe has an outer surface over at least part of its entire length, the diameter of the outer periphery of which corresponds to the diameter of a circular hole provided in the faucet main body. A sleeve is provided, and the sleeve is inserted outside or inside the distal end of the installation side of the water discharge pipe,
By rotatably fitting the outer surface of the sleeve into the circular hole, the water discharge pipe can be inserted into the faucet body by the ring support of the annular recess mentioned above and the position where the outer surface of the sleeve contacts the circular hole. It is designed to be able to freely rotate and restrict unnatural movement, and by restricting the water discharge pipe at two positions, one on the circular hole side and the other on the annular recess side, the accidental movement of the water discharge pipe, such as lateral vibration, is restricted.

(Function of the device) In this device, by using the above-described means, the outlet end side of the faucet body forms a fulcrum in a state where it is rotatably restricted by the fitting of the ring and the annular recess of the water discharge pipe. , the outer surface of the sleeve attached to the insertion end of the spout pipe, which is the point of action even when the discharging tip side of the spout pipe is applied with vertical swinging force, is in sliding contact with the circular hole without any gap, so the discharge The water pipe is rotated freely and smoothly without any movement.

(Embodiment 1 of the invention) To explain Embodiment 1 of this invention with reference to the drawings below (see Figures 1 to 3), the faucet body 1
A screw 12 is provided on the outer periphery of the outlet end of 0,
A tightening nut 14 is configured to be screwed onto this screw 12, and a faucet main body 10 of a water discharge pipe 16, which will be described later.
The ring 24 is configured to be supported within an annular recess 26 provided on the outer periphery of the attachment side to be attached to.

The mounting side of the water discharge pipe 16 with the ring 24 supported in the recess 26 is inserted into the faucet body 10, and the tightening nut 14 is screwed onto the screw 12 of the faucet body 10 so as to surround the ring 24. As a result, the water discharge pipe 16 is provided so as to be connectable to the faucet main body 10, but the configuration thereof is as known.

The inside of the outlet end of the faucet body 10 is designed to suppress water leakage, similar to known ones.
A packing groove 20 for accommodating the packing 18 is provided.

Although the packing groove 20 is not necessarily large as shown in the drawings and is omitted from the drawings, it may be a relatively small groove for a so-called O-ring.

Furthermore, as will be described later, it is conceivable that an annular groove for an O-ring is provided on the outer periphery of the water discharge pipe 16 in the axial direction thereof, and the above-mentioned packing groove 20 is not provided in the faucet body.

Inside this packing groove 20, a circular hole portion 22 having a diameter slightly larger than the outer diameter of the water discharge pipe 16 is provided continuously to the packing groove 20.

As is well known, an annular recess 26 is formed on the outer periphery of the water discharge pipe 16 at a certain distance inward from the distal end on the installation side in order to allow a circular ring 24 to be mounted in the axial direction. It is formed.

By attaching the ring 24, this recess 26 is formed at the connecting part of the water spout 16, that is, when the mounting side of the water spout 16 is connected to the faucet main body 10.
This is intended to prevent the movement of the concave portion 26, which serves as a fulcrum during use, of the faucet main body 10. Water pipe 1
A sleeve 28 is adopted to suppress the movement of the distal end on the installation side of the holder 6 during use.
Its structure is shown in FIG.

The entire body is cylindrical, has a water passage hole 38, and has a flange-like flange 30 protruding from one side, and the diameter of the outer surface 31 of this flange 30 is equal to
This corresponds to the diameter of the circular hole 22 provided inside the hole.

When the sleeve 28 is inserted into the faucet main body 10 together with the water discharge pipe 16 as described later, this flange 30
The outer surface 31 of is rotatably inscribed in the circular hole 22.

A cylindrical guide portion 32 is formed on the other side of the flange portion 30, and the outer diameter of this guide portion 32 is made to substantially match the inner diameter of the water discharge pipe 16 on the attachment side.

In other words, when the guide portion 32 of the sleeve 28 is inserted inside the attachment side of the water discharge pipe 16, the inner surface of the water discharge pipe 16 is configured to follow the outer surface of the guide portion 32 of the sleeve 28.

In this guide part 32, several elongated slits 34 are formed on the side opposite to the flange part 30, extending from approximately the center of the guide part 32 to the other end thereof and running parallel to the axis.

By providing this slit 34, an elastic action can be produced on the guide portion 32 side of the slit 28.

This is because the guide portion 32 between adjacent slits 34 is weak against stress, and there is an advantage that the water spout 16 and the sleeve 28 can easily fit together when the water spout 16 is inserted into the faucet body 10.

Furthermore, an annular recess 36 is provided on the outer periphery of the guide portion 32 in a direction perpendicular to the slit 34 in the axial direction.

This recess 36 corresponds to the inner shape of the recess 26 provided in the water discharge pipe 16.

Therefore, when the sleeve 28 is inserted inside the water discharge pipe 16, the recess 36 of the sleeve 28 is reliably fitted inside the recess 26 of the water discharge pipe 16.

Although not shown, the sleeve 28
Providing the recess 36 may be omitted.

The material of this sleeve 28 may be metal or hard plastic, but especially nylon, fluorine, acetal, polyethylene, etc., which have an excellent low coefficient of friction,
Plastics such as polybutylene terephthalate are preferred.

The flange 30 of the sleeve 28 is positioned outside the distal end on the installation side of the water discharge pipe 16, and the guide portion 32 of the sleeve 28 is
is inserted into the inside of the water discharge pipe 16 and fixed.

It goes without saying that the means for fixing is not limited to simply press-fitting, but may also be fixed by applying an adhesive to the guide portion 32.

When the guide part 32 is provided with a slit 34, an elastic action is generated in the guide part, and the guide part 32 is connected to the water discharge pipe 1.
As mentioned above, it has the advantage of being easy to insert into the tube.

Further, when a recess 36 is provided in the guide portion 32, the sleeve 28 is inserted into the water discharge pipe 1 by fitting the recess 36 inside the recess 26 provided in the water discharge pipe 16.
There are profits that are difficult to escape from 6.

In this way, the sleeve 2 is attached to the installation side of the water discharge pipe 16.
8 is fixed, the side of the flange 30 of the sleeve 28 of the water discharge pipe 16 faces the circular hole 22 of the faucet main body 10, and the outer peripheral surface 31 of the flange 30 of the sleeve 28 is rotated into the circular hole 22. The faucet body 10 can be attached freely.
Attach the tightening nut 14 to the screw 12 provided at the outlet end of the
The faucet main body 10 and the water discharge pipe 16 are connected by screwing them together.

(Example 2) This example is shown in FIG. 4, and is essentially unchanged from the idea of Example 1.

The structures of the faucet main body 10 and the water discharge pipe 16 are the same as in the first embodiment.

As for the faucet main body 10, a screw 12 is provided around the outlet end, and a packing groove 20 and a circular hole portion 22 are provided.

Regarding the water discharge pipe 16, an annular recess 26 is formed in the axial direction of the outer periphery near the attachment side.

Tightening nut 14, packing 18 and ring 24
It is also the same that they are adopting .

This second embodiment differs from the previous example in the assembly structure of the sleeve 28a and sub 28a.

The sleeve 28 of the first embodiment has a structure in which the guide portion 32 thereof is inserted into the inside of the water discharge pipe 16, but in this example, the guide portion 32a of the sleeve 28a
is inserted to the outside of the water discharge pipe 16.

As shown in FIG. 4, the structure of the sleeve 28a in this example has a generally bottomed cylindrical shape, although the height is low, and there are water holes 3 on the bottom side.
8a is formed, and the inner part of the part protruding from the bottom functions as the guide part 32 of the first embodiment, and the outer part is rotated into the circular hole part 22 provided in the faucet body 10. It constitutes the outer circumferential surface 31a of the collar portion 30a that is freely inscribed.

The diameter of the inner circumference of this collar portion 30a, that is, the guide portion 3
2a is made to match the outer diameter of the attachment side of the water discharge pipe 16 connected to the faucet main body 10.

As with the sleeve 28 of the first embodiment, the material of the sleeve 28a in this second embodiment is not only metal but also preferably plastics having a low coefficient of friction such as nylon, fluorine, acetal, polyethylene, and polybutylene terephthalate.

The assembly procedure of this second embodiment will be explained, but the procedure is basically the same as that of the first embodiment.

The difference from Embodiment 1 is that in Embodiment 1, the connection between the water discharge pipe 16 and the faucet body 10 is such that the inner periphery of the water discharge pipe 16 is fitted onto the outside of the guide portion 32 of the sleeve 28; On the other hand, in this example, the water discharge pipe 1 is installed inside the guide portion 32a of the sleeve 28a.
6 is inserted and rotatably abuts on the circular hole 22 of the outer peripheral surface 31a of the flange 30a protruding from the sleeve 28a.

The means for connecting the sleeve 28a to the water discharge pipe 16 is as follows:
It may be press-fitted as in the first embodiment, or the water discharge pipe 16
The sleeve 28a is coupled to the water discharge pipe 16 by applying adhesive to the inside of the guide portion 32a on the outer periphery of one side end of the sleeve 28a.

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

(1) The tip of the water pipe on the side where it is attached to the faucet body is
While it is regulated via a sleeve inscribed in the circular hole, the outlet end side of the faucet body is regulated by a recess provided in the water discharge pipe and a ring fitted into the recess.
It is regulated by two places.

Conventionally, the movement of the spout pipe was limited to only one place on the outlet side of the faucet body, so the distal end of the faucet where it was installed was prone to movement, giving it a poor feel when rotating. In the design, as mentioned above, the side where the spout pipe is attached to the faucet body is regulated by two places, so that it does not move uncontrollably.

Therefore, the rotation feel during use is extremely good.

(2) In the past, the restriction on unintentional movement of the spout pipe was limited to only one location on the outlet end side of the faucet body, so unavoidable movement of the spout pipe could not be avoided, and water leakage easily occurred from the connection point, resulting in a relatively short period of time. Although there were drawbacks that required repair or replacement, this design was implemented at two points, with the point of action being near the insertion end farthest from the ring support, which serves as the fulcrum, to restrict the rotation of the water discharge pipe. As a result, runout around the fulcrum is minimized with only a slight dimensional error gap, resulting in less water leakage and no need for repair or replacement after short-term use.

[Brief explanation of drawings]

Fig. 1 is a sectional view of the main parts according to the first embodiment of this invention, Fig. 2 is a perspective view of the sleeve, Fig. 3 is a side view of this invention, and Fig. 4 is a main part according to the second embodiment of this invention. FIG. 5 is a longitudinal sectional view of the main part of the prior art. Explanation of symbols of main parts, 10...faucet body, 1
2...Screw, 14...Tightening nut, 16...Water pipe, 22...Circular hole, 24...Ring, 26...
Annular recess, 28... sleeve, 28a... sleeve, 30... flange, 30a... flange, 31...
Outer peripheral surface of the collar, 31a...outer peripheral surface of the collar.

Claims (1)

[Claims for Utility Model Registration] A screw 12 is provided on the outer periphery of the outlet end of the faucet body 10, a packing groove 20 is provided inside the end, and a water discharge pipe 16 is provided inside the packing groove 20.
A circular hole 22 with a diameter slightly larger than the outer diameter of the packing groove 20 is provided continuously with the packing groove 20, and the packing 18 is installed in the packing groove 20, and the water discharge pipe 16 is attached to the faucet main body 10. An annular recess 26 is formed on the outer periphery of the faucet body 10, the ring 24 is supported in the recess 26, and the installation side of the water discharge pipe 16 supporting the ring 24 is connected from the outlet end of the faucet body 10 to the circular hole. The packing 1 is inserted into the packing groove 22 and the ring 24 supported by the recess 26 is installed in the packing groove 20.
8, a faucet is formed by enclosing the ring 24 and screwing a tightening nut 14 onto the screw 12 of the faucet body 10, so that a water discharge pipe 16 is rotatably provided on the faucet body 10. In the water discharge pipe connection device, the diameter of the outer circumference is a circular hole 22 provided in the faucet main body
A cylindrical sleeve having at least part of its entire length an outer surface corresponding to the diameter of By rotatably disposing the water discharge pipe 16 inside the faucet main body 10, the supporting part of the ring 24 of the annular recess 26 and the outer surface of the sleeve are connected to the circular hole part 22.
A spout pipe connection device for faucets, characterized in that the spout pipe connection device for faucets is rotatably controlled by the position in contact with the water faucet.