JPS6119814Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a gun-shaped nozzle for watering used for washing cars and watering flower beds.

In general, water hoses used for car washes, etc. only spray water, and are not capable of stopping the water or changing the shape of the water as needed, thus saving water. Another disadvantage was that it was difficult to do so, and the form of watering could not be changed.

A technique for opening and closing a passage by pressing a valve ball against a spring in order to change the flying distance of water is disclosed in, for example, Japanese Utility Model Application Publication No. 114615/1983. However, with such known technology, the form of water sprinkling cannot be changed, and water cannot be sprayed unless the lever is held down, which makes the user's hands tedious. On the other hand,
A method using a rotating pot to change the form of watering is described, for example, in Japanese Patent Application Laid-Open No. 53-31213. However, since the pressure of the pressure water supply source is not constant during water sprinkling work, the form of water sprinkling varies depending on the pressure of the pressure water supply source. For example, when a domestic well pump is used, this effect is significant. For this reason, using such known techniques results in a lot of wasteful water spraying work, which is undesirable from the point of view of saving water.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a water-saving gun for water spraying that can maintain a predetermined form of water spraying despite pressure fluctuations in a pressure water supply source and that does not require hands to be used when the valve is open.

According to the present invention, in a water-saving gun for watering, which is configured to be connectable to a water supply hose that supplies pressure water, has a handle, and has a pressure water passage inside.
a valve ball that can open and close the passage on the upstream side of the passage;
an opening/closing button for operating the valve ball, a ball pressing spring for pressing the valve ball to the closed position, and a holding member for holding the opening/closing button at the open position of the valve ball; and water spraying on the downstream side of the valve ball. A switching valve for changing the form of the switching valve and a switching handle of the switching valve are provided.

Therefore, although the switching valve is rotated to change the water sprinkling form in the same way as the known technology, the position of the valve ball can be controlled by operating the open/close button, and the water discharge pressure on the downstream side can be controlled by operating the open/close button. Since it can be controlled by operation, even if the pressure of the pressure water supply source fluctuates, water sprinkling in a predetermined form can be maintained by operating the open/close button. Therefore, the watering pattern can be maintained without the need for complicated operations such as turning the switching handle, so it is extremely suitable when using a pressure water supply source with large pressure fluctuations, such as a domestic well pump, for example.

In addition, since a holding member is provided to hold the opening/closing button in the open position of the valve ball, when water is to be discharged at the maximum pressure, the holding member eliminates the need to constantly press the opening/closing button by hand, so that hands are not tied up.

When carrying out the present invention, it is preferable that the holding member is composed of a protrusion provided on the opening/closing button and an engagement recess provided on the gun body to engage the protrusion.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is an overall sectional view of the water-saving gun according to the present invention, and the main body is roughly divided into a lower main body 1 and an upper main body 25.
and a connecting cylinder part 1 at the upper end of the lower body part 1.
a is inserted into the upper main body passage 26 of the upper main body 25, and the two are connected. Note that a handle O-ring 14 is arranged to keep both watertight.

An insert fitting 3 is inserted into the lower end of the lower part 1 of the main body, and a handle 2 is formed on the side surface of the insert fitting 3, and an inner handle passage 2 forming a pressure water passage is formed inside the center.
2 are formed above and below. A valve seat 4 is inserted above the lower part 1 of the main body. The valve seat 4 is formed in a cylindrical shape and is provided in the lower part 1 of the main body via two valve seat O-rings 5 and 6.

A valve stem 7 is inserted into the valve seat 4 via a valve stem O-ring 8 so as to be freely in and out within a certain range.
An opening/closing button 9 is attached to the outer end of the valve seat 4.
A spring 10 is interposed between the outer recess 4a and the open/close button 9, and the valve stem 7 is configured to be pushed outward. Note that 11 is a spring pin. Also, inside the valve seat 4 is a valve ball 15.
is installed internally, and the valve ball 15 is pressed toward the valve stem 7 by a ball presser spring 13. As shown in FIG. 1, unless the open/close button 9 is pulled toward the main body and the valve rod 7 is slid to the right, the valve ball 12 is pressed against the ball stopper 4b of the valve seat 4, blocking the passage of water. Note that 23 is a notch that allows communication between the handle inner passage 22 and the inside of the valve seat 4. Further, 15 is a valve ball holder formed on the inner surface of the lower part 1 of the main body to correspond to the valve ball 12. Furthermore, an upwardly protruding portion 9 is provided above the opening/closing button 9.
a is attached, and this protrusion 9a is configured to be able to engage with an engagement recess 25a formed on the side of the upper body 25, which will be described later.

Next, the structure of the main body upper part 25 side will be explained.

The upper part 25 of the main body is mainly connected to the lower part 1 of the main body by the connecting cylinder part 1a, and both are connected with the nut 1.
6, it is securely connected. In the center of the upper part 25 of the main body is an upper main body passage 2 which is a water passage.
6 and a distal end passage 27 are formed substantially coaxially, and a switching stopper chamber 28 is formed in the intermediate portion thereof. The switching stopper chamber 28 has a substantially circular planar shape, and a stopper post 29 is arranged in the center.
9 is connected to a tap screw 21 through a washer 20 with an upper O-ring 18 and a lower O-ring 19 interposed therebetween.
The main body upper part 25 is rotatably attached to the main body upper part 25 around the axis α, and the switching stopper is constituted as a whole.
Reference numeral 17 denotes a switching handle fixed to the upper end of the stopper post 29 and provided with an angle display marker 17a. Directly below the handle 17 is a large diameter portion 31 of the stopper post 29. The rotation β is regulated to approximately 90° by a stopper (not shown). On the other hand, a water passage hole 30 is drilled in the center of the stopper post 29 in the horizontal direction.
In the state shown in the figure, pressure water flows to the stopper post 2 as shown by arrow A.
It ejects without hitting 9, but the plug pillar 29
In the state shown in FIG. 4, the pressurized water hits the stopper 29, becomes a turbulent flow as shown by arrow B, and is ejected from the water saving gun. In addition, an extension part 32 is formed on the back surface of the main body upper part 25, and a hole part 33 is provided in the center of the extension part 32. This hole 33 can be used for hanging the water saving gun.

When using the water saving gun in the above configuration, a water supply hose (not shown) is connected to the insert fitting 3, and the main valve (not shown) is opened. In this state, water does not spout from the water saving gun, but by grasping the handle 2 and pulling the open/close button 9 as shown in FIG.
Pressure water flows as shown by the arrow γ and is ejected through the upper body passage 26, the switching valve chamber 28, and the tip passage 27.

When you want to stop watering, simply release your finger from the open/close button 9, that is, open the open/close button 9 and return to the state shown in Figure 1, and the valve ball 12 closes the water passage and the water stops. Realize. In addition, if you want to continue watering for a long time in the watering state shown in FIG.
5a, even if you release your finger from the opening/closing button 9, the opening/closing button 9 will not return and watering can be continued. In this state, when it is desired to stop water sprinkling, the opening/closing button 9 returns to its original position by releasing the protruding portion 9a from the engagement recess 25a, thereby stopping the water sprinkling. Also, when you want to spray water in a direct jet state, you just need to align the water passage hole 30 of the switching valve with the axes of the upper body passage 26 and the tip passage 27, as shown in FIG. As shown in FIG. 4, the water passage hole 30 of the switching plug may be oriented perpendicular to the passages 26, 27. Of course, the water passage hole 30 may be arranged at an intermediate angle between the state shown in FIG. 3 and the state shown in FIG. 4.

As described above, according to the present invention, even if pressure water is supplied to the pressure water supply hose, water will not be sprinkled unless the open/close button is pulled, so only the minimum required amount of water is used, so there is no waste of water. Furthermore, since the water supply passage can be kept open as needed, the operability of watering is extremely good. Furthermore, the shape of the sprayed water jet can be changed as necessary, making it easier to use.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a sectional view thereof, FIG. 2 is a sectional view showing the watering state of the embodiment, FIG. 3 is a sectional view taken along the line of FIG. 1, and FIG.
This figure is a sectional view showing the same part as FIG. 3 and showing a different usage state. DESCRIPTION OF SYMBOLS 1...Bottom part, 1a...Connecting tube part, 2...Handle, 3...Insert fitting, 4...Valve seat, 4a...
...Outer surface recess, 4b... Ball stopper, 5... Valve seat O-ring, 6... Valve seat O-ring, 7... Valve stem,
8... Valve stem O-ring, 9... Open/close button, 9a...
...Protrusion part, 10...Spring, 11...Spring pin, 12...Valve ball, 13...Ball holding spring, 14...Handle O-ring, 15...
Valve ball receiver, 16...Nut, 17...Switching handle, 17a...Angle display marker, 18...O-ring on top of the stopper, 19...O-ring under the stopper, 20...Washer, 21...Tap screw, 22... ... Passage in the handle, 23... Notch, 24... Second passage, 25...
... Upper part of main body, 26 ... Upper main body passage, 27 ... Tip passage, 28 ... Switching stopper chamber, 29 ... Stopper pillar, 30 ...
...Water hole, 31...Large diameter part, 32...Extension part, 3
3... Hole.

Claims (1)

[Scope of utility model registration request] A water-saving gun for water sprinkling that is configured to be connectable to a water supply hose that supplies pressurized water, has a handle, and has a pressure water passage inside, a valve ball that can open and close the passage on the upstream side of the passage; an opening/closing button for operating the valve ball; a ball pressing spring for pressing the valve ball to a closed position; and a holding member for holding the opening/closing button to the open position of the valve ball; A water-saving gun for water sprinkling characterized by being provided with a switching valve for changing the form of water sprinkling and a switching handle for the switching valve.