JP3374142B2 - Anti-freeze water tap orientation control device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for freely changing the direction of an antifreeze water tap which can freely change the directions of an inlet and an outlet. 2. Description of the Related Art Conventionally, since an antifreeze water faucet has a valve box portion buried underground, the convenience of freely changing the directions of an inlet and an outlet is required for construction work. Therefore, for example, as shown in FIGS. 1 and 2 of Japanese Utility Model Publication No. 6-1645 filed by the same applicant, both valve boxes are bagged via a metal circular ring or a plurality of square rings whose ends are cut off. The screw connection was made with a nut. For this reason, there is a disadvantage that the cost is inevitably increased, including the trouble of cutting and assembling. [0003] In view of the above, in the present invention, the cap nut is omitted, and both valve boxes are rotatably connected only by a circular ring whose end is cut off. In addition, not only one part can be omitted, but also cutting, especially assembling becomes easy, so that the cost can be remarkably reduced. Therefore, in the present invention, in one of the valve box on the inlet side and the outlet side, the diameter of a circular retaining ring having a cut end is made elastic. Make a ring receiving groove with a depth of about 2/5 to 3/5 of
At the same position as the above-mentioned accommodation groove of the other valve box, a ring relief groove slightly deeper than the retaining ring wire diameter was provided, and a tapered surface was formed below the ring accommodation groove. A stopper jig is applied to the lower end of the ring escape groove so that the retaining ring is smoothly elastically deformed in the radial direction along the tapered surface at that position. The boxes are connected. [0005] In the embodiment, the inflow side valve box is located below the outflow side valve box, but this may be reversed, and accordingly, the drain port is connected to the inflow port. It may be located below. Since the valve box is made of a bronze casting, if the retaining ring is made of phosphor bronze for a spring, there is an advantage that it can be melted without disassembly, but of course it can be made of stainless steel. [0007] The sealing between the two valve boxes is generally a method in which an O-ring is brought into close contact with the cylinder. However, the O-ring may be sealed so as to press the O-ring against a seat, or another packing may be used. Is also good. In order to prevent the retaining ring, the depth of the ring receiving groove is desirably set to at least 1/2 of the diameter of the retaining ring wire. For example, a tapered surface is formed at the upper end of the ring releasing groove to form the retaining ring. A pressing force in the direction of the ring accommodating groove is applied, and it is possible to set the pressing force to 1/2 or less, for example, 2/5. FIG. 1 shows an embodiment of a valve box according to the present invention. An inlet valve box 2 having an inlet 1 and an outlet valve box 4 having an outlet 3 above the inlet box. The outlet valve box 4 is provided with a drain port 5 above the outlet port 3. Inside, three cylinders 6, 7, and 8 are formed in the outflow side valve box 4 in order from the top, and one cylinder 9 is formed in the inflow side valve box 2, and four cylinders sliding on each of the above cylinders are formed. The piston 14 to which the annular packings 10, 11, 12, 13 are mounted is housed. The outflow side valve box 4 has a sealing surface 15 on the outer periphery at the lower end, and closely contacts the O-ring 16 housed in the inflow side valve box 2 to seal between the two valve boxes. A tapered surface 17 is formed at the upper end of the sealing surface 15, a ring receiving groove 18 is formed above the tapered surface 17, and a retaining ring 19 is mounted. The retaining ring 19 is formed of a circular phosphor bronze for a spring whose end is cut off.
Numeral 8 has a depth equal to or more than 1/2 of the wire diameter of the retaining ring 19, and about 3/5 in the present embodiment. A ring escape groove 20 slightly deeper than the diameter of the retaining ring 19 is provided at the upper end of the inlet side valve box 2 at a position slightly lower than the ring housing groove 18. Therefore, there is an effect that rattling between both valve boxes is reduced, but it is not always necessary to stick to the valve box, and it is also possible to make it correspond to the same position. Since the ring accommodating groove 18 is deeper than the radius of the retaining ring 19, the retaining ring 19 expands toward the ring relief groove 20 due to the pulling force acting between the two valve boxes, and the two valve boxes separate. It will not be lost. That is, the two valve boxes are irremovably connected to each other so as to rotate freely. Reference numeral 21 denotes two jig insertion holes formed at the lower end of the ring escape groove. If the holes are drilled in a cast state, the cost can be reduced. After assembly, the jig insertion hole 21 is usually made invisible by covering it with a seal, a rubber film, or the like, or injecting a filler. The outlet side valve box 4 is extended to the ground by a pipe 22 and connected to an operation unit main body (not shown). The piston 14 is also extended to the ground by a rod 24 via a piston joint 23, and a handle is provided. (Not shown). FIG. 2 shows a state diagram in the middle of assembling both valve boxes.
With the retaining ring 19 in the escape groove 20,
Insert two stopper jigs 25 into the jig insertion holes 21,
In this state, the inlet valve box 4 is pushed. At this time, the retaining ring 19 receives the lowering force and the expanding force by the tapered surface 17, but does not move further downward by the stopper jig 25, which is combined with the circular shape of the retaining ring, It smoothly expands into the ring escape groove 20 and the tapered surface 17 is
The outflow side valve box 4 stops entering the inflow side valve box 2 when it comes into contact with. At this time, since the retaining ring 19 is held in a state where the tapered surface 17 is removed, the stopper jig 25 is pulled out, and the outflow side valve box 4 is further pushed in, and the state shown in FIG. I do. At this time, the retaining ring 19 is restored by the elastic force, and fits into the ring accommodating groove 20 and makes a clicking sound, so that it can be confirmed whether or not the ring is properly inserted. In any case, the portion of the retaining ring 19 locked on the side of the ring escape groove 20 is close to 1/2 of the wire diameter, so if the stopper jig 25 is not used, the tapered surface 17 When pressed, the retaining ring 19 receives a strong descending force and is pressed against the lower end of the ring relief groove 20, so that it is not expanded and accommodated in the relief groove 20, so that both valve boxes can be connected. It will not be possible. FIG. 3 shows another embodiment of the valve box of the present invention. In contrast to the embodiment of FIG. 1, a ring housing groove 18 is formed in the outflow side valve box 4 and a retaining ring 19 is housed. A ring escape groove 20 is formed in the inflow-side valve box 2. Inside, a cylinder 8 is formed in the inflow-side valve box 2. When connecting the two valve boxes, an O-ring 16 and a retaining ring 19 are attached to the inflow-side valve box 2 in advance.
The stopper jig 25 having a U-shaped tip is located at the lower end of the ring receiving groove 20 as shown in FIG.
Is housed in the ring housing groove 18 after being pressed toward the ring escape groove 20 side. The dimensions and positional relationship of the ring receiving groove 18 and the ring relief groove 20 are the same as those in FIG. In the present embodiment, since the jig insertion hole 21 of FIG. 1 can be omitted, there is an advantage that it is not necessary to attach a seal, attach a rubber film, or inject a filler. As described above, according to the present invention, a circular metal retaining ring whose end is cut off and has elasticity is fixedly attached to a stopper using a stopper jig. As a result, the cap nut can be omitted, and therefore, in addition to the cost, the cutting time for screwing the valve box, the assembling time for screwing and tightening can be shortened, and there is an effect that the cost is greatly reduced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view of a valve box showing one embodiment of the present invention. FIG. 2 is a longitudinal sectional view of a main part of the valve box, showing an assembly state of the present invention. FIG. 3 is a longitudinal sectional view of a main part of a valve box, showing another embodiment of the present invention. FIG. 4 is a plan view of a main part of a stopper jig used in assembling the embodiment of FIG. 3; [Description of Signs] 1 Inlet 2 Inlet side valve box 3 Outlet 4 Outlet side valve box 5 Drain port 6, 7, 8, 9 Cylinder 10, 11, 12, 13 Annular packing 14 Piston 15 Sealing surface 16 O-ring 17 Taper surface 18 Ring receiving groove 19 Retaining ring 20 Ring escape groove 21 Jig insertion hole 22 Pipe 23 Piston joint 24 Rod 25 Stopper jig

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E03B 7/10 F16L 37/10

Claims (1)

(57) [Claims] 1. The valve box is divided into two parts, an inlet side and an outlet side, and the end is cut off to use a circular retaining ring having elasticity. In the antifreeze water faucet in which the directions of both valve boxes can be freely changed without detachment, the one valve box accommodates a ring having a depth of approximately 2/5 to 3/5 of the diameter of the retaining ring. At the same position as the above-mentioned ring housing groove of the other valve box, a ring escape groove slightly deeper than the retaining ring wire diameter is provided, and a tapered surface is formed below the ring housing groove. An antifreeze water tap that connects both valve boxes without using cap nuts by applying a stopper jig to the lower end of the ring escape groove so that the retaining ring does not descend further even if it is pushed on the surface Orientable device.