JPH0337724Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention relates to a water sprinkling nozzle used for horticulture or agriculture, and more specifically to a water spout switching mechanism that can switch between normal water spout and shower water spout with a simple operation. It is something.

BACKGROUND ART Conventionally, as a water spray nozzle equipped with a normal water spouting part and a shower water spouting part, the one shown in FIG. 3 has been known. This water spray nozzle includes an inner tube 52 fixed to the upper end of a grip part 51, an intermediate tube 53 screwed onto the outer surfaces of these tubes, and an outer tube 5 screwed onto the outer surface of the inner tube 52.
Mainly 4. The tip of the inner tube 52 is closed and has a front protrusion 56 on the closed wall, and a water hole 57 communicating with the inner gap 55 between the tube 52 and the intermediate tube 53 is provided at the front end side of the inner tube 52. has been done.
A water spout 58 is usually provided at the tip of the intermediate cylinder 53, and a water passage hole 60 communicating with the outer gap 59 between the intermediate cylinder 53 and the outer cylinder 54 is provided at the front end side. Furthermore, the front end of the outer tube 54 is shaped like a trumpet, and a shower plate 61 is provided at the tip.

In the water spray nozzle having this structure, first, the valve body 63 of the main valve is separated from the valve seat 64 by operating the lever 62 to open the main water passage hole 65. In the state shown in FIG. 3, water enters the inner gap 55 from inside the inner cylinder 52 through the water passage hole 57 as shown by arrow B, and is normally jetted from the water spout 58 as water. Further, a part of the water that has entered the inner gap 55 enters the outer gap 59 through the water passage hole 60 as shown by arrow C in FIG.
A shower of water comes out from 1. Normally, to stop the flow of water, the intermediate cylinder 53 is rotated and moved backward relative to the inner cylinder 52, and its front end seal 66 is pressed against the shoulder 67 of the inner cylinder 52, thereby closing the flow path indicated by arrow B. In addition, to stop the flow of shower water, rotate the outer cylinder 54 with respect to the intermediate cylinder 53 and move it back.
The front end seal portion 68 is pressed against the shoulder portion 69 of the intermediate cylinder 53 to close the flow path indicated by the arrow C.

Problems that the invention aims to solve: However, in the water nozzle with the above configuration, the normal water discharge and the shower water discharge are controlled to flow and stop separately as described above, so the normal water discharge is used as the shower water discharge. To switch, use the intermediate cylinder 5.
3 relative to the inner tube 52 to move it backwards to stop normal water spout, and then turn the outer tube 54 relative to the inner tube 53 to move it forward to perform shower water spouting. When switching, contrary to the above, the intermediate cylinder 53 is advanced relative to the inner cylinder 52, and the outer cylinder 54 is moved forward relative to the intermediate cylinder 53.
It is necessary to retreat against.

Therefore, the conventional water spray nozzle having such a structure has a complicated structure, which increases the risk of damage, and also has the disadvantage that switching operations are troublesome and difficult to use.

The purpose of this invention is to provide a water spray nozzle that can solve the above-mentioned problems.

Means for Solving Problems The water discharge switching mechanism of the water spray nozzle according to this invention, as shown in FIGS. A shaft 19 is provided in a forward-protruding manner and has a front seal member 20 attached to its tip, and an inner cylinder 1.
An outer cylinder 2 that is screwed onto the outer cylinder 2 and moves back and forth by forward and reverse rotation.
2, and a shower plate 2 provided at the front end of the outer cylinder 22.
3, a normal spout 24 provided in the center of the same plate 23 and passed through the front end of the shaft 19, and the same outlet 2.
4, and a small inner diameter water stop part 24a which is provided at the rear end of the water spout 24 and normally stops the water flow by fitting the front seal member 20; A water guide pipe 27 that is tightly fitted into the inner cylinder 12, and a rear seal member 28 that is attached to the rear end portion 27a and located forward of the water passage hole 16.
As a result, as the outer cylinder 22 retreats, the front seal member 20 comes out forward from the water stop part 24a and passes the normal water flow, and the rear seal member 28 closes to the water passage hole 1.
6 and is designed to stop the shower water flow by retreating to the rear.

Examples Examples of this invention will be described in detail below.

In Fig. 1, a water spray nozzle 1 according to this invention is shown.
is roughly pistol-shaped, with a grip part 2 and a gun barrel part 3.
It becomes more. A hose connection part 4 is attached to the lower end of the grip part 2.
is provided, and a main valve 5 is installed inside the upper end. The valve body 6 of the main valve 5 is provided at the rear end of the gun barrel 3, and the valve stem 7 is urged forward by a spring 8 interposed between the front end thereof and the inner surface of the rear end of the valve body 6. ,
The valve body 9 is in pressure contact with the valve seat 10. Further, the valve stem 7 is pulled rearward by a lever 11 provided on the rear end protrusion and supported by the grip portion 2 to open the main valve 5.

The water discharge switching mechanism according to this invention is provided at the front part of the gun barrel part 3. In front of the main valve 5, an inner cylinder 12 is provided integrally with the main valve 5, with a stepped part 13 for a stopper at the rear end, an O-ring 14 in front of it, a male threaded part 15 in front of it, and water through the side part in front of it. A cap nut 17 for a stopper is provided at the front end of the hole 16, respectively. A water passage member 25 holding the valve seat 10 of the main valve 5 is provided inside the rear end of the inner cylinder 12 via an O-ring 26. A shaft 19 is provided at the front end axis of the inner cylinder 12 via a fixing member 18, and a front O-ring 20 and a head 21 are provided at the tip and the tip, respectively.

The inner cylinder 12 is covered with an outer cylinder 22, and the external cylinder 22 can be moved back and forth with respect to the inner cylinder 12 by screwing the male threaded part 32 of the external cylinder 22 with the male threaded part 15. A donut-shaped shower plate 23 is provided at the front end of the outer cylinder 22, and a water spout 24 is usually provided at the center of the plate 23. Normally, a water stop part 24a with a small inner diameter is provided at the end of the spout 24, and a water conduit 27 is provided on the outer surface of the spout 24 in a rearwardly extending shape, and the rear end 27a is tightly inserted into the inner cylinder 12. It is embedded. A pair of rear O-rings 28 are attached to the rear end portion 27a, and the water passage hole 1 of the inner cylinder 12
It is located in front of 6. The water guide pipe 27 is supported by the outer cylinder 22 by a support member 29, and the rear end step 31 of the pipe 27 comes into contact with the cap nut 17, so that it is prevented from moving any further. The tip of the shaft 19 is normally disposed within the spout 24, and a sliding member 30 is provided at the center of the length of the shaft 19.
is slidably disposed within the water guide pipe 27, and the front O-ring 20 is tightly fitted into the water stop portion 24a to normally stop the flow of water.

In this way, as shown in FIG. 1, by advancing the outer cylinder 22 with respect to the inner cylinder 12, the normal water flow is stopped, and the opening of the water passage hole 16 allows the shower water flow X to flow. be given

Next, as shown in FIG. 2, when the outer cylinder 22 is moved backward with respect to the inner cylinder 12 until its rear end touches the stepped part 13, the front O-ring 20 moves to the water stop part 2.
4a to the front to allow the normal water flow Y to flow, and the rear O-ring 28 moves to the rear of the water passage hole 16 to stop the shower water flow.

In this way, normal water spouting and shower water spouting can be switched only by forward and reverse rotation, that is, forward and backward movement, of the outer cylinder 22 relative to the inner cylinder 12.

Effects of the invention The water discharge switching mechanism of the water spray nozzle according to this invention is constructed as described above, so it has an extremely simple structure and is easy to manufacture, and there is no risk of damage during use. . In addition, switching between normal water spout and shower water can be done by simply rotating the outer cylinder forward and backward relative to the inner cylinder, i.e. by moving it back and forth.
Compared to the conventional product explained at the beginning, the switching operation is much easier and it is extremely easy to use.

[Brief explanation of drawings]

Fig. 1 is a vertical cross-sectional view of a main part showing a shower water discharging state of a water spray nozzle showing an embodiment of this invention, Fig. 2 is a longitudinal cross-sectional view of a main part showing a normal water discharging state of the same nozzle, and Fig. 3 shows a conventional technology. FIG. 3 is a vertical cross-sectional view of a main part of the water spray nozzle shown in FIG. 12...Inner cylinder, 16...Water hole, 19...Shaft, 20...Front O-ring (front seal member),
22...Outer tube, 23...Shower plate, 24...Normal spout, 24a...Water stop part, 27...Water pipe,
27a... Rear end portion, 28... Rear O-ring (rear seal member).

Claims (1)

[Scope of utility model registration request] An inner cylinder 12 having a water passage hole 16 on the side, and an inner cylinder 1
The shaft 19 is provided in a forwardly protruding manner at the front end shaft center of the shaft 19 and has a front seal member 20 attached to the tip end thereof.
, an outer cylinder 22 that is screwed to the inner cylinder 12 and moves back and forth by forward and reverse rotation; a shower plate 23 provided at the front end of the outer cylinder 22; and a shower plate 23 provided at the center of the plate 23 and the front end of the shaft 19. Normal water spout 24 through
, a small inner diameter water stop part 24a that is provided at the rear end of the spout 24 and that normally stops the water flow by fitting the front seal member 20; It consists of a water guide pipe 27 whose end 27a is tightly fitted into the inner cylinder 12, and a rear seal member 28 attached to the rear end 27a and located forward of the water passage hole 16. The front seal member 20 comes out forward from the water stop part 24a and passes the normal water flow, and the rear seal member 28
A water spouting switching mechanism in a water sprinkling nozzle, which is configured to retreat backward from the water passage hole 16 and stop the shower water flow.