JPH0451882Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention relates to a water sprinkling nozzle used for horticulture or agricultural purposes, 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. 4 has been known. This water nozzle includes an inner tube 52 fixed to the upper end of a grip part 51, an intermediate tube 58 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 cylinder 52 is closed and has a front projection 56 on the closing wall, and the front end side of the middle cylinder 52 has a water hole 57 communicating with the inner gap 55 between the cylinder 52 and the intermediate cylinder 53. It has been established.
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. 4, 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, some 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 D 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 cylinder 52 to move it backwards to stop normal water spouting, and further to rotate the outer cylinder 54 relative to the intermediate cylinder 53 to move it forward to perform shower water spouting, and also to switch the shower water spout to normal water spouting. In this case, contrary to the above, the intermediate cylinder 53 is moved forward 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.

Solution to the Problem As shown in the attached drawing, the water discharge switching mechanism of the water nozzle according to this invention has a main valve 5 and a switching valve 34 in front of the main valve 5 installed in the gun barrel 3, and the shaft 8 of the main valve 5 is connected to the gun barrel. The switching valve 34 has a switch piece 31 at its base end, and its rear end projecting backward is connected to the working end of the lever 12 which is pivoted to the back surface of the gripping part 2. In addition, a switching lever 33 having a spring accommodating portion 32 at its tip is swingably supported by the casing 35 in such a way that at least the outer side of the switch piece 31 comes out from the opening 44 of the casing 35 of the nozzle 1; A first water hole 38 communicating with a compartment 37 for normal water discharge and a second water hole 40 communicating with a compartment 39 for shower water discharge are provided at predetermined positions in a partition wall 36 provided vertically in front of the lever 33. are opened respectively, and the spring accommodating portion 32 is made to selectively face the water passage holes 38 and 40 by a switching operation, and the valve body 42 is opened by the spring 41 housed in the spring accommodating portion 32. It is urged against the partition wall 36.

In a preferred implementation mode of this invention, a connecting piece 46 is non-rotatably connected to the support shaft 45 of the switching lever 33 of the switching valve 34, and a switch piece 47 is rotatably connected to the outer end of the connecting piece 46. The both sides 47a of the switch piece 47 slide on the outer surface of the opening edge 35a of the casing 35 in the circumferential direction as the switching operation is performed. In this case, both sides 47a of the switch piece 47 cover the outer surfaces of both ends of the opening edge 35a of the casing 35, so that sand, dirt, etc. can enter the inside of the casing 35 from the opening 44 and the switching valve will not function. can be prevented as much as possible. Therefore, the nozzle in this mode is suitable for outdoor use.

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

In FIGS. 1 and 2, the water spray nozzle 1 according to this invention is roughly pistol-shaped and consists of a grip part 2 and a gun barrel part 3. A hose connection part 4 is provided at the lower end of the grip part 2, and a main valve 5 is installed in the rear part of the gun barrel part 3. The inside of the valve box of the main valve 5 is
It communicates with the hose connection part 4 via the water conduit 7 of the grip part 2 . The shaft 8 of the main valve 5 is disposed penetratingly through the axial center of the gun barrel 3, with both ends protruding from the gun barrel 3. The shaft 8 is biased forward by a spring 9 interposed between the valve body 10 of the main valve 5 and the rear end surface of the valve box, so that the valve body 10 comes into pressure contact with the valve seat 11. . Grip part 2
A lever 12 is pivotally attached to the back of the
5 is connected to the protruding rear end of the shaft 8. In this way, the shaft 8 is normally urged forward by the spring 9 to close the main valve 5, and is moved back by operating the lever 12 to open the main valve.

The gun barrel 3 includes the main valve 5 described above, the switching valve 34 in front of it, and the compartment 3 for normal water discharge in front of it.
7 and a compartment 39 for shower water discharge.

The switching valve 34 communicates with the inside of the valve box 6 of the main valve 5 via the main water passage hole 20 formed in the rear partition wall 26 having the valve seat 11, and is perpendicular to the front end of the switching valve 34. It communicates with the normal water discharge compartment 37 through a first water hole 38 formed in a front partition wall 36, and further through a second water hole 40 formed in the same partition wall 36. It communicates with a compartment 39 for shower water discharge. A shower plate 22 is provided at the front end of the compartment 39, and a normal water spout 23 that projects forward is provided at the front end of the compartment 37 for normal water discharge. and the shaft 8 of the main valve 5
extends forward in the compartment 37 through the switching valve 34, and its tip head 24 normally projects forward from the spout 23.

The switching valve 34 is configured as follows. In other words, the switching lever 33 has a switch piece 31 at its base end and a spring accommodating portion 32 at its tip.
is swingably supported by the casing 35 by inserting the cylindrical portion of the support shaft 45 into the bearing portion of the casing 35 of the nozzle 1 . By fitting the square hole of the switch piece 31 into the square column part of the support shaft 45, the switch piece 31 is non-rotatably connected to the switching lever 33. A long hole 6 is formed in the switching lever 33, and a shaft 8 is passed through this. The outer part of the switch piece 31 is the casing 3
It comes out from the opening 44 of 5. A first water passage hole 38 and a second water passage hole 40 are respectively opened at required positions in the front partition wall 36, and the spring accommodating portion 32 is selectively inserted into these water passage holes 38, 40 by a switching operation. It is designed to be attended to in a unified manner. A ball-shaped valve body 42 is urged against the front partition wall 36 by a spring 41 housed in the spring accommodating portion 32.

In this manner, the valve body 42 is selectively brought into pressure contact with each valve seat 43 around the two water passage holes 38, 40 by the switching operation, and these water passage holes 38, 40 are opened and closed. In the state of shower water discharge, the first water passage hole 38 is closed and the second water passage hole 40 is opened. To switch the shower water spouting state to normal water spouting, as shown in FIG.
, and close the second water passage hole 40. In the case of reverse switching, the other end 31a of the switch section 31 may be pressed.

FIG. 3 shows a modification of the switch piece.

In this embodiment, the rectangular cylinder part of the connecting piece 46 is fitted into the square column part of the support shaft 45 of the switching lever 33 of the switching valve 34, so that the connecting piece 46 is attached to the switching lever 33 in a non-rotating state. is connected to. A switch piece 47 is rotatably attached to a support shaft 48 provided at the outer end of the connecting piece 46 . Then, both sides 47a of the switch piece 47 close to the opening edge 35a of the casing 35 as a result of the switching operation.
It is adapted to slide in the circumferential direction on the outer surface of. In this case, both sides 47a of the switch piece 47
covers the outer surface of both ends of the opening edge 35a of the casing 35, so that it is possible to prevent sand, dirt, etc. from entering the inside of the casing 35 from the opening 44 and causing the switching valve to malfunction as much as possible. .

The other configurations in FIG. 3 are substantially the same as the corresponding configurations in FIG. 2.

Effects of the invention According to this invention, the shaft 8 of the main valve 5 is connected to the working end of the lever 12 pivotally attached to the back surface of the grip part 2, so that it is biased forward by the spring 9. The shaft 8 can be easily moved backward by operating the lever 12, and the main valve 5 can be opened and closed without any trouble.

Further, the water spouting switching section 34 is connected to the switching lever 33.
However, the switch piece 31 is swingably supported by the casing 35 of the nozzle 1 so that only the switch piece 31 is exposed outside the casing 35 of the nozzle 1, and the first water passage hole 38 and the second water passage hole 40 are formed at required positions on the partition wall 36. are opened respectively, and the spring housing portion 3 is inserted into these water holes 38 and 40.
2 is made to face alternatively by a switching operation, and the spring 41 is accommodated in the spring accommodating portion 32.
Since the ball-shaped valve body 42 is urged against the partition wall 36 by the valve body 42, the structure is extremely simple and easy to manufacture, and there is no risk of damage during use. In addition, switching between normal water spout and shower water spout can be done simply by switching the switching lever, so the switching operation is much easier than with the conventional product explained at the beginning.
Extremely easy to use.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional view of the main part showing the shower water discharging state of a water spray nozzle showing an embodiment of this invention, Fig. 2 is an enlarged cross-sectional view along the - line in Fig. 1, and Fig. 3 shows a modified example. FIG. 2 is a sectional view corresponding to FIG. 2; FIG. 4 is a vertical cross-sectional view of a main part of a water spray nozzle showing the prior art. 1... Water nozzle, 2... Gripping part, 3... Gun barrel part, 5... Main valve, 8... Shaft, 9... Spring,
12...Lever, 31...Switch piece, 32...
Spring housing portion, 33...Switching lever, 34...Switching valve, 35...Casing, 35a...Opening edge, 36...Partition wall, 37, 39...Divided chamber, 3
8, 40... Water hole, 41... Spring, 42... Valve body, 43... Valve seat, 44... Opening, 45... Support shaft, 46... Connection piece, 47... Switch piece, 47
a... Both sides, 48... Support shaft.

Claims (1)

[Claims for Utility Model Registration] 1) Main valve 5 in gun barrel 3 and switching valve 3 in front of it
4 is installed inside, the shaft 8 of the main valve 5 passes through the gun barrel 3, and its rear projecting rear end is connected to the operating end of a lever 12 pivotally mounted on the back surface of the gripping part 2, The switching valve 34 has a switch piece 31 at the base end.
A switching lever 33 having a spring accommodating portion 32 at its tip connects at least the outer side of the switch piece 31 to the opening 4 of the casing 35 of the nozzle 1.
casing 3 so that it comes out from casing 4.
A first water passage hole 38 communicating with a compartment 37 for normal water discharging is provided at a predetermined position in a partition wall 36 which is swingably supported by the lever 33 and vertically provided in front of the lever 33.
and a second compartment leading to the compartment 39 for shower water discharge.
Water passage holes 40 are opened respectively, and the spring accommodating part 32 is made to selectively face these water passage holes 38 and 40 by a switching operation, and the spring 41 housed in the spring accommodating part 32 A water spray nozzle equipped with a water discharge switching mechanism in which a valve body 42 is biased against a partition wall 36. 2) Support shaft 4 of switching lever 33 of switching valve 34
5, the connecting piece 46 is connected in a non-rotatable manner, the switch piece 47 is rotatably attached to the outer end of the connecting piece 46, and both sides 47a of the switch piece 47 are connected to the casing 35 with the switching operation. Utility model registration claim 1, which is configured to slide on the outer surface of the opening edge 35a in the circumferential direction.
Nozzle as described in section.