JPH0429867Y2 - - 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. 4 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. 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. Also, 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 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 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.

Means for Solving Problems The water discharge switching mechanism of the water spray nozzle according to this invention, as shown in FIGS. is the valve body 1 of the shaft 8 that penetrates the valve body 6 in a watertight manner.
0 is pressed against the valve seat 11 by the urging force of the spring 9 interposed between the outside of the box of the shaft 8 and the inside of the casing 35, and the sliding guide frame 14 inside the casing 35 is brought into contact with the outside of the box of the shaft 8. A sliding piece 12 that slides and has a sawtooth portion 13 on the sliding surface is provided, and a rear protrusion 16 that has a sawtooth portion 15 that meshes with the sawtooth portion 13 of the sliding piece 12 is provided on the sliding guide frame 14. A disengagement lever 17 for disengaging the sawtooth sections 13 and 15 is pivotally mounted on the casing 35. On the other hand, the switching valve section 34 has a switch section 31 at its base end and a spring housing at its distal end. A switching lever 33 having a section 32 is swingably supported by the casing 35 so that only the switch section 31 is exposed outside the casing 35 of the nozzle 1, and a partition wall 3 is provided vertically in front of the lever 33.
6, a first water passage hole 38 communicating with the compartment 37 for normal water discharge, and a compartment 3 for shower water discharge.
A second water passage hole 40 leading to the second water passage hole 9 is 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 is housed in the spring accommodating part 32. A ball-shaped valve body 42 is urged against the partition wall 36 by a tabular spring 41.

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

1 to 3, the water spray nozzle 1 according to this invention is approximately pistol-shaped, and has a grip portion 2.
and 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 at the upper end. The valve body 6 of the main valve 5 communicates with the hose connection 4 via an inner conduit 7 . Further, the shaft 8 of the main valve 5 penetrates the rear wall of the valve box 6 in a watertight manner,
A spring 9 interposed between the rear end portion and the inner surface of the grip portion 2 urges the valve body 10 forwardly to press the valve body 10 against the valve seat 11 . A trigger-like sliding piece 12 is provided below the main valve 5 so as to be slidable back and forth with respect to the grip part 2, and the upper end 25 of the rising part
is connected to the rear end of the shaft 8. A sawtooth section 13 is provided on the lower surface of the sliding piece 12, and a rear protrusion 16 having a sawtooth section 15 on the upper surface is provided at the lower part of the sliding guide frame 14.
15 prevents the sliding piece 12 from moving forward. Further, an engagement release lever 17 is pivotally attached to the grip part 2 at the rear of the sliding piece 12, and when the horizontal part 18 protruding rearward from the casing 35 is pushed in the direction of arrow D, the lower end inclined part 19 of the lever 17 is moved rearward. By pushing the rear end of the protrusion 16 downward, as shown by the chain line in FIG. The main valve 5 is closed.

The gun barrel section 3 mainly consists of a switching valve section 34 on the rear side, a compartment chamber 37 for normal water discharge in front of it, and a compartment chamber 39 for shower water discharge in front of it. The switching valve section 34 communicates with the inside of the valve box 6 of the main valve 5 through a main water passage hole 20 formed in the rear partition wall 26 having the valve seat 11, and also communicates with the inside of the valve box 6 of the main valve 5. A first water passage hole 38 formed in a front partition wall 36 provided perpendicularly to the compartment 3 for normal water discharge is provided.
7, and further communicates with a compartment 39 for shower water discharge via a communication pipe 21 via a second water passage hole 40 formed in the partition wall 36. A shower plate 22 is provided at the front end of the compartment 39, and a normal water spout 23 that penetrates the compartment 39 and projects forward is provided at the front end of the compartment 37 for normal water discharge. The shaft 8 of the main valve 5 passes through the switching valve portion 34 and extends forward within the compartment 37, with its tip head 24 normally protruding forward from the spout 23.

The switching valve section 34, as shown in FIG. 3, is constructed as follows. That is, the switching lever 33 having the switch portion 31 at the base end and the spring accommodating portion 32 at the tip causes the casing 35 to swing by inserting its shaft portion 33a into the shaft support portion 35a of the casing 35 of the nozzle 1. Supported for free movement. The switch portion 31 is exposed outside the casing 35. 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. And a ball-shaped valve body 4
2 is biased 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, as shown in FIG. 1, the first water passage hole 38 is closed,
Moreover, the second water passage hole 40 is opened. To switch the shower water spouting state to normal water spouting, as shown in FIG.
Just close 0. In the case of reverse switching,
All you have to do is press the lower end 31b of the switch section 31.

Effects of the invention The water discharge switching mechanism of the water spray nozzle according to this invention is as described above, in which the switching lever 33 is attached to the casing 35 of the nozzle 1 so that only the switch part 31 is exposed to the outside of the casing 35. supported, and a first water passage hole 38 and a second water passage hole 40 are respectively opened at predetermined positions of the partition wall 36,
The spring accommodating portion 32 is made to selectively face these water passage holes 38 and 40 by a switching operation, and a ball-shaped valve body 42 is moved against the partition wall 36 by a spring 41 housed in the spring accommodating portion 32. Since it is biased, 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 spout can be performed simply by switching the switching lever, so compared to the conventional product described at the beginning, the switching operation is much easier and extremely easy to use.

In the switching valve unit 34 configured as described above, when the water pressure inside the valve is high, the water pressure presses the valve body 42 against the valve seat 43, making switching difficult. Therefore, it is necessary to reduce the water pressure inside the valve before switching and to return the water pressure to its original level after switching.

According to this invention, the water spouting switching mechanism consists of the main valve 5 housed in the casing 35 and the switching valve part 34 on the front side thereof. is lowered, and in this state, the switching valve section 34 is operated as described above to switch the water discharge, and after switching, the main valve 5 is opened to return the water pressure to the original level. In this way, the water discharge can be easily switched.

Further, in the main valve 5, the valve body 10 of the shaft 8, which penetrates the valve box 6 in a watertight manner, is pushed against the valve seat 11 by the biasing force of the spring 9 interposed between the outside of the box of the shaft 8 and the inner surface of the casing 35. A sliding piece 1 is pressed into contact with the box of the shaft 8, slides on the sliding guide frame 14 inside the casing 35, and has sawtooth portions 13 on the sliding surface.
2 is provided, the sliding guide frame 14 is provided with a rear protrusion 16 having a sawtooth part 15 that engages with the sawtooth part 13 of the sliding piece 12, and the casing 35 is provided with a sawtooth part 1.
Since the engagement release lever 17 for releasing the engagement between the parts 3 and 15 is pivotally mounted, the sliding guide frame 14
The main valve 5 is opened by pulling the sliding piece 12 against the biasing force of the spring 9, and the engagement of the sawtooth portions 13 and 15 is released by operating the engagement release lever 17. The main valve 5 can be closed. In this way, the main valve 5 can be opened and closed very easily.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal 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 is the same as Fig. 1. FIG. 2 is an enlarged cross-sectional view taken along the line - inside. FIG. 4 is a vertical cross-sectional view of a main part of a water spray nozzle showing the prior art. DESCRIPTION OF SYMBOLS 1... Water nozzle, 2... Gripping part, 3... Gun barrel part, 5... Main valve, 8... Shaft, 31... Switch part, 32... Spring housing part, 33... Switching lever, 34 ...Switching valve part, 35...Casing, 36...Partition wall, 37, 39...Division chamber, 3
8, 40...Water hole, 41...Spring, 42...Valve body, 43...Valve seat.

Claims (1)

[Claims for Utility Model Registration] Consisting of a main valve 5 housed in a casing 35 and a switching valve section 34 on the front side thereof, the main valve 5 includes a valve body 1 of a shaft 8 that penetrates a valve body 6 in a watertight manner.
0 is pressed against the valve seat 11 by the urging force of the spring 9 interposed between the outside of the box of the shaft 8 and the inside of the casing 35, and the sliding guide frame 14 inside the casing 35 is brought into contact with the outside of the box of the shaft 8. A sliding piece 12 that slides and has a sawtooth portion 13 on the sliding surface is provided, and a rear protrusion 16 that has a sawtooth portion 15 that meshes with the sawtooth portion 13 of the sliding piece 12 is provided on the sliding guide frame 14. A disengagement lever 17 for disengaging the sawtooth sections 13 and 15 is pivotally mounted on the casing 35. On the other hand, the switching valve section 34 has a switch section 31 at its base end and a spring housing at its distal end. A switching lever 33 having a section 32 is swingably supported by the casing 35 so that only the switch section 31 is exposed outside the casing 35 of the nozzle 1, and a partition wall 3 is provided vertically in front of the lever 33.
6, a first water passage hole 38 communicating with the compartment 37 for normal water discharge, and a compartment 3 for shower water discharge.
A second water passage hole 40 leading to the second water passage hole 9 is 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 is housed in the spring accommodating part 32. A water discharge switching mechanism in a water spray nozzle, in which a ball-shaped valve body 42 is urged against a partition wall 36 by a tabular spring 41.