JPS6313813Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention connects a water supply pipe and a shower head with a water-conducting spherical body, and allows the shower head to be manually rotated or swung in any direction. This invention relates to a shower head universal pipe joint that can be used as a shower head.

[Conventional technology]

Conventional shower head universal joints are
The structure shown in the partial sectional view in FIG. 5 was common. That is, the water-conducting spherical body 2 is firmly attached to the end of the water supply pipe 1 by welding or other means, and the female joint 3 is fitted to the neck D side of the spherical body 2. A male joint 6 integrated with the shower head 5 is fitted on the part C side, and the female and male joints 3 and 6 are screwed together 8 to form a ring-shaped packing 4 attached to the annular stepped part 3a in the female joint 3. The spherical body 2 is held under pressure by a ring-shaped packing 7 attached to the annular stepped portion 6a in the male joint 6.

[Problems with conventional technology]

The conventionally constructed universal pipe joint had two most serious problems. The first point is the spherical body 2 and the female
Looseness tends to occur between the male joints 3 and 6 due to misalignment or misalignment, and if you try to correct this by tightening the female and male joints 3 and 6, the packing 4 will tighten against the female joint 3.
The problem is that the shower head 5 may protrude from the spherical body 2 of the water supply pipe 1, and in extreme cases, the shower head 5 may fall off from the spherical body 2 of the water supply pipe 1. The main reason for this is that the packing 4 is attached to an annular stepped portion 3a inside the female joint 3 that is not visible to the naked eye, so that the packing 4 is displaced when the female and male joints 3 and 6 are screwed together. This state is shown in an enlarged view as shown in FIG. 6, where the center line E of the female joint 3 is indicated by a chain line.
This is because they intersect with each other, as shown by the center line F of the packing 4 shown by the two-dot chain line. The second problem is that the threaded end of the male joint 6 is close to the outer surface of the spherical body 2, and the inner surface of the male joint 6 may come into contact with the outer surface of the spherical body 2 when operating the shower head 5. As a result, the mirror-finished outer surface of the spherical body 2 is damaged, impairing the sealing performance.
This problem becomes even more serious when there is misalignment between the female/male joints 3, 6 and the spherical body 2.

[Means for problem solving]

The present invention was devised in view of the above-mentioned conventional problems and for the purpose of solving them. A female joint that encloses almost the entire spherical body is fitted into a cylindrical portion having an inner diameter approximately 1.5 times larger than the maximum outer diameter of the spherical body, and the spherical body is attached to the engaging edge of the female joint. An engaging packing having an inner diameter smaller than the maximum outer diameter of the fitting is held in a concave-convex fitting relationship so that its inner peripheral edge is visible, and the end side of the spherical body has a depth of screwing into the female joint. A male joint with a short shaft approximately 1/3 of the axial length of the female joint is fitted, a pressure receiving packing is held within the male joint, and when the female joint and male joint are in a screwed state. The spherical body is configured such that its neck side and end side are held between the engaging packing and the pressure receiving packing, and its maximum outer diameter is enclosed through the inner cavity of the cylindrical part of the female joint. At the point.

[Effect]

A ring-shaped engagement packing is held at the engagement edge of the female joint containing the water-conducting spherical body at the end of the water supply pipe in a convex-concave fitting relationship so that its inner peripheral edge can be seen. There is no fear that the engaging packing will become dislodged or fall off, and the center of the spherical body and the center of the female joint are always kept in alignment regardless of whether the shower head is being operated or not. Also, when the female joint and male joint are screwed together,
Since the water-conducting spherical body is held in line contact between the engaging packing on the neck side and the pressure-receiving packing on the end side, the swinging operation of the shower head is performed smoothly. Furthermore, the center of the water-conducting spherical body is enclosed by the female joint cavity, which is 1.5 times the maximum outer diameter of the spherical body, so even if the shower head is swung somewhat roughly, the female joint will not open. The inner surface of the sphere never contacts the outer surface of the spherical body, and the outer surface of the spherical body is not damaged.

〔Example〕

The present invention will be explained below based on embodiments shown in the drawings.

FIG. 1 is a sectional view showing the main parts of a showerhead universal pipe joint according to a first embodiment of the present invention. In the figure, reference numeral 10 denotes a water supply pipe, and a spherical body 11 whose outer surface is mirror-finished is provided at the end of the water supply pipe 10. 12 is a female joint. The axial length of the female joint 12 is approximately equal to the bulging length of the spherical body 11, and its inner diameter is approximately 1.5 times the maximum outer diameter J of the spherical body 11. There is enough room to include it.
An annular or intermittent convex edge 12a is provided on the inner periphery of the engagement edge of the female joint 12, and the inner diameter K of the convex edge 12a is larger than the maximum outer diameter J of the spherical body 11. Reference numeral 13 denotes a ring-shaped engagement packing, and the engagement packing 13 has an annular engagement groove 13a provided on its outer circumferential surface that connects to the female joint 12.
It is engaged and held by the convex edge 12a of. Since the inner diameter of the engaging packing is smaller than the maximum outer diameter of the spherical body 11, the lower edge 13c on the inner circumferential side thereof is connected to the spherical body 1.
It comes into contact with the neck H side of 1. Further, since the inner peripheral edge of the engagement packing 13 held by the female joint 12 can be seen, it is possible to clearly recognize whether or not misalignment has occurred between the engagement packing 13 and the spherical body 11. The lower part of the outer circumferential surface of the engagement packing 13 is formed into a tapered surface 13b, which facilitates engagement with the engagement edge of the female joint 12, as will be described later. In order to facilitate the engagement, it is of course possible to provide cuts 13d in the lower half of the engagement packing 13 at appropriate pitches, as shown in FIG.

In FIG. 1, 14 is a male joint provided at the inlet 15a of the shower head 15. The axial length of the male joint 14 is short, and a through hole 14a for inflow is provided near the center thereof. Further, a ring-shaped pressure receiving packing 16 is held on the inner annular stepped portion 14b of the male joint 14. A female threaded portion 1 has a male threaded portion 14c carved on the outer peripheral surface of the male joint 14 and a female threaded portion 14c carved on the lower side of the inner peripheral surface of the female joint 12.
2b, the pressure receiving packing 1
6 is brought into contact with the outer surface of the spherical body 11 on the end G side. At this time, female joint 1
Since the second engagement packing 13 is in contact with the neck H side of the spherical body 11, the spherical body 11 is held between the engagement packing 13 and the pressure receiving packing 16. Therefore, the shower head 15 connected to the outlet end of the water supply pipe 10 can be rotated in any direction. The screwing depth of the male joint 14 into the female joint 12 is limited to approximately 1/3 of the axial length of the female joint 12. this is,
This is to allow the spherical body 11 to be contained within the cavity of the female joint 12 with sufficient space.

FIG. 3 shows a second embodiment of the shower head universal joint according to the present invention. The difference from the first embodiment shown in FIG.
3e or C type (see Figure 4) engaging packing 1
3g is engaged and held. Other aspects are almost the same as in the first embodiment.

Next, a procedure for assembling the shower head universal pipe joint according to the present invention will be explained. In the case of the first embodiment shown in FIG. 1, first, the ring-shaped engagement packing 13 is expanded and pressed into the spherical body 11 provided in the water supply pipe 10 from the end G side to the neck H side. do. Next, while fitting the female joint 12 from the end G side to the neck H side of the spherical body 11, the tapered surface 13b of the engaging packing 13 is pressed with the convex edge 12a on the engaging edge of the female joint 12. Press upward to engage and pack 1
The upper surface 13d of 3 is brought into contact with the flat surface 10a formed on the neck H side of the water supply pipe 10, and the female joint 12 is further pressed upward so that the convex edge 12a is inserted into the groove 13a of the engagement packing 13. engage. Subsequently, after fitting the ring-shaped pressure receiving packing 16 to the annular stepped portion 14b of the male joint 14 provided at the inlet 15a of the shower head 15, the male joint 14 is screwed onto the female joint 12, and the spherical body 11 is held by the upper and lower engaging packings 13 and the pressure receiving packings 16 to complete the assembly of the shower head universal pipe joint.

In the case of the second embodiment shown in FIG. 3, first, the O-shaped engagement packing 13e (or C-shaped engagement packing 13g) is pressed into the neck H side of the spherical body 11, and then Next, the female joint 12 is fitted onto the spherical body 11. Continuously, in the case of the O-shaped engagement packing 13e, a part of the engagement packing 13e is bent inward to reduce the outer circumferential diameter, and is engaged with the groove 12c on the engagement edge of the female joint 12. The fitting packing 13e is engaged. In addition, in the case of the C-shaped engagement packing 13g shown in FIG.
The outer diameter of the engaging packing 13g is reduced by inserting the tip thereof, and the engaging packing 13g is engaged with the groove 12c on the engaging edge of the female joint 12. Finally, the male joint 14 is screwed onto the female joint 12, and the spherical body 11 of the water supply pipe 10 is sandwiched between the upper and lower engaging packings 13e (13g) and the pressure receiving packing 16, completing the assembly of the shower head's flexible pipe joint. do.

[Effect of idea]

Since the present invention is constructed as described in detail above, it achieves the effects listed below.

A ring-shaped engagement packing is held in a convex-concave fitting relationship on the engagement edge of the female joint that is provided at the end of the water supply pipe and includes a water-conducting spherical body, so that the engagement packing is not dislocated. The center of the spherical body and the center of the female joint remain aligned at all times, regardless of whether the shower head is being operated or not.

The engaging packing is held so that its inner peripheral edge is visible on the engaging edge of the female joint, so even if an inconvenient holding state such as misalignment occurs, this can be easily confirmed. Therefore, countermeasures such as repairs can be taken quickly and easily.

When the female joint and the male joint are screwed together, the water-conducting spherical body is held between the engaging packing on the neck side and the pressure-receiving packing on the end side in a linear contact manner and in a cushioning manner. The swinging operation of the shower head is extremely smooth.

The middle part of the water-conducting spherical body sandwiched between the engagement packing on the neck side and the pressure-receiving packing on the end side is
Since it is enclosed by the cavity of the female joint, which is 1.5 times the maximum outer diameter of the spherical body, and the screwing depth of the male joint is only 1/3 of the axial length of the female joint,
Even if the shower head is swung somewhat roughly, the inner surfaces of the female and male joints will not come into contact with the outer surface of the spherical body, and there is no risk of water leakage due to damage to the mirror-finished spherical surface.

[Brief explanation of the drawing]

1 to 4 illustrate the shower head universal pipe joint according to the present invention, in which FIG. 1 is a sectional view of the main part showing the first embodiment, and FIG. 2 is a sectional view of the main part used in the first embodiment. FIG. 3 is a sectional view of the main part showing the second embodiment, FIG.
The figure is a perspective view of the engagement packing used in the second embodiment. FIGS. 5 and 6 relate to a conventional shower head universal pipe joint.
The figure is a cross-sectional view of the main part of the entire shower head with the middle part omitted, and FIG. 6 is an enlarged cross-sectional view of the main part of the universal joint. 10... Water supply pipe, 11... Spherical body, 12... Female joint, 13, 13e, 13g... Engagement packing, 14... Male joint, 15... Shower head,
16...Pressure packing.

Claims (1)

[Scope of utility model registration request] A female joint that encloses almost the entire spherical body is engaged with the neck side of the water-flowing spherical body provided at the end of the water supply pipe by a cylindrical portion having an inner diameter approximately 1.5 times larger than the maximum outer diameter of the spherical body. An engaging packing having an inner diameter smaller than the maximum outer diameter of the spherical body is held at the engaging edge of the female joint in a concave-convex fitting relationship so that the inner peripheral edge thereof can be seen. A male joint with a short shaft is fitted onto the end side of the spherical body, and the depth of screwing into the female joint is approximately 1/3 of the axial length of the female joint, and a pressure receiving packing is held within the male joint. When the female joint and the male joint are in a screwed state, the spherical body has its neck side and end side sandwiched by the engaging packing and pressure receiving packing, and its maximum outer diameter part is A flexible pipe joint for a shower head, characterized in that the female joint is enclosed through a hollow space within a cylinder portion of the female joint.