JP2912321B1 - Watering nozzle - Google Patents

Abstract

An object of the present invention is to provide a watering nozzle capable of reducing a burden caused by a staying fluid in a water stop state. SOLUTION: A flow path 5 formed in a grip portion, and a flow path 5
The sheet portion 15 provided in the middle and the sheet portion 1 of the flow path 5
A valve member 8 slidably incorporated into the body 2 side from 5;
A valve member 26 provided at an end of the valve member 8 on the seat portion side; an elastic member 11 having an elastic force applied to the valve member 8;
And a regulating mechanism that keeps the position of the valve member 8 in a water-stop state in which the seat portion 15 is seated, and moves the valve member 8 against the elastic force of the elastic member 11, and moves the valve body 26 away from the seat portion 15. And an operation lever 23 for switching to a water state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a watering nozzle capable of switching between a water-passing state and a water-stopping state.

[0002]

2. Description of the Related Art As a watering nozzle capable of switching between a water-passing state and a water-stopping state, for example, those shown in FIGS. As shown in FIG. 5, a grip cover 3 is integrally formed with the main body 2 in which the flow path 1 is formed. A cylindrical sleeve 4 is integrally assembled in the grip cover 3. The inside of the cylindrical sleeve 4 is used as a flow path 5 and communicates with the flow path 1 in the main body 2. Further, a sheet portion 15 is integrally formed in the middle of the flow path 5 in the sleeve 4.

[0003] A hose connection joint 6 is connected to the rear end of the sleeve 4. Then, if a hose (not shown) is connected to the hose connection joint 6, the fluid supplied from the hose flows from the flow path 5 in the sleeve 4 to the flow path 1 in the main body 2.
Will be led to. A head body 7 is rotatably attached to the tip of the main body 2 as a fluid ejection port.
Then, although not specifically shown, by rotating the head body 7 with respect to the main body 2, the water shape ejected from the head body 7 is switched to shower, direct radiation, diffusion and the like.

[0004] In the sleeve 4, a tubular valve member 8 is slidably incorporated closer to the hose connection joint 6 than the seat portion 15 is. The cylindrical valve member 8 has a distal end closed, and the closed surface serves as a valve body 26. The O-ring 14 is fitted into the valve body 26. A pair of seal grooves 9 are formed around the valve member 8, and O-rings 10 are fitted into these seal grooves 9, respectively. The spring 11 is inserted from the rear end side of the sleeve 4, and a conical spring receiver 13 is attached to a tapered opening 12 formed at the rear end of the sleeve 4. Therefore, the elastic force of the spring 11 acts on the valve member 8 to press the O-ring 14 of the valve body 26 against the seat portion 15 to seat the seat portion 15.

In this state, the fluid supplied from the hose side is guided to the flow path 5 in the sleeve 4 → the inside of the valve member 8 → to the water passage hole 16 formed in the side surface of the valve member 8. Are not guided to the main body 2 side. On the other hand, if the valve member 8 is pressed down against the spring 11, the valve element 26 separates from the seat part 15 as shown in FIG. Therefore, the fluid supplied from the hose side is guided to the flow path 5 in the sleeve 4 → the inside of the valve member 8 → the water passage hole 16 → the flow path 1 in the main body 2, and from the head body 7 in a predetermined water form. Gushing.

Hereinafter, how to operate the valve member 8 will be described. A pair of sandwiching pieces 17 are integrally formed on the outer peripheral surface of the sleeve 4. Then, by inserting the shaft 18 of the L-shaped arm 19 into the holes formed in these sandwiching pieces 17, the L-shaped arm 19 is inserted.
Are rotatably supported. An insertion hole 20 is formed in the side surface of the sleeve 4, and one end of the L-shaped arm 19 is inserted into the insertion hole 20. One end of the L-shaped arm has a forked shape, and the valve member 8 is sandwiched by the forked shape, and is linked to a step 21 formed on the outer peripheral surface of the valve member 8. Further, a shaft 22 is provided on the main body 2 side of the sleeve 4, and an operation lever 23 is connected to the shaft 22. Then, the other end of the L-shaped arm 19 is
It is in contact with the slide surface inside the operation lever 23.

If no force is applied to the operation lever 23, the valve member 8 is pushed up by the elastic force of the spring 11 as shown in FIG. . At this time, one end of the L-shaped arm 19 is also pushed up through the step portion 21 of the valve member 8, so that the other end of the L-shaped arm 19 pushes the operation lever 23 from the inside, and pushes the operation lever 23 to the sleeve 4 side. Keep away from From this water stopped state, the operation lever 23
, The L-shaped arm 19 is pushed by the inner slide surface, and rotates in the direction of arrow k in FIG. Accordingly, as shown in FIG. 7, one end of the L-shaped arm 19 pushes down the valve member 8 via the step portion 21, and the valve body 26 is separated from the seat portion 15 to be switched to a water-permeable state.

[0008]

In the above-described conventional watering nozzle, the fluid supplied from the hose side stays upstream of the sheet portion 15 when the water is stopped. However, in the water stop state, the staying fluid has a high pressure, and the high pressure fluid acts on the O-ring 10 provided around the valve member 8 and the like. For this reason, the burden on the O-ring 10 and the like increases, and the sealing function is impaired.
In addition, the valve member 8 upstream of the seat portion 15 must be designed to withstand the high-pressure fluid that stays.

Furthermore, when used in the winter, if the water is left for a long time in the water-stop state, the fluid that stays may freeze. During the freezing, the volume of the stagnating fluid may expand and break the sleeve 4 and the valve member 8 from the inside. An object of the present invention is to provide a watering nozzle capable of reducing a burden caused by a staying fluid in a water stop state.

[0010]

According to the present invention, there is provided a body provided with a fluid ejection port, and a grip provided on the body. Fluid supplied from a rear end side of the grip is supplied to the grip and the body. It is assumed that the watering nozzle is configured to pass through the inside and be ejected from the fluid ejection port. According to a first aspect of the present invention, there is provided a flow passage formed in a grip portion, a seat portion provided in the middle of the flow passage, a valve member which is slidably incorporated in the main body side of the flow passage relative to the seat portion, A valve body fixed to the end of the member on the seat portion side, an elastic member that directly or indirectly exerts an elastic force on the valve body, and a valve body in a water-stop state in which the seat covers the seat portion. It is characterized in that it comprises a regulating mechanism for maintaining the position of the valve member, and an operating lever for moving the valve member against the elastic force of the elastic member, and for switching the valve body from the seat portion to a water-permeable state.

According to a second aspect, in the first aspect, a spring is interposed between the valve member and the seat portion as an elastic member, and when the operating lever is operated, the valve member is pushed down against the spring. The feature is that the valve body is configured to be separated from the seat portion to the rear end side of the grip portion to switch to a water-passing state.

[0012]

1 to 4 show an embodiment of a watering nozzle according to the present invention. In the watering nozzle of this embodiment, a seat portion 15 for switching between a water-passing state and a water-stopping state is disposed on the rear end side of the sleeve 4 to which the hose connection joint 6 is connected. In the following, the differences will be mainly described, and the same components as those of the conventional example will be denoted by the same reference numerals. As shown in FIGS. 1 to 4, the seat portion 15 is formed integrally with the flow path 5 in the sleeve 4, and the seat portion 15 is connected to the hose connection joint 6 instead of the main body 2 side. Is located on the rear end side.

In the sleeve 4, the seat portion 15 is provided.
A cylindrical valve member 8 is slidably incorporated in the main body 2 side. A rod portion 25 is integrally formed at an end of the valve member 8 on the seat portion 15 side with four pillar portions 24 interposed therebetween. Then, the space between the support portions 24 is opened, and the water passage hole 1 is opened.
6. Further, a circular plate-shaped valve body 26 is integrally formed at the tip of the rod portion 25, and the O-ring 14 is fitted around the valve body 26. Further, a spring 11 is interposed between the seat portion 15 and the valve member 8.

If no force is applied to the operating lever 23, the valve member 8 is pushed up by the elastic force of the spring 11, as shown in FIGS. At this time, the valve member 8
The one end of the L-shaped arm 19 is also pushed up through the stepped portion 21, so that the other end of the L-shaped arm 19 pushes the operating lever 23 from the inside and tries to separate the operating lever 23 from the sleeve 4 side. Then, just at the position where the O-ring 14 of the valve body 26 seats the seat portion 15, the operation lever 2
The upper end of 3 is in contact with a regulating protrusion 27 protruding from the main body 2. Therefore, the operation lever 23 is not further separated from the sleeve 4 side, and the valve body 26 is maintained in a water-stop state in which the seat portion 15 seats.

When the operation lever 23 is grasped from the water stop state, the operation lever 23 is pushed by the inner slide surface thereof, and the L-shaped arm 19 is pushed.
Rotates in the direction of arrow k in FIG. Therefore, FIGS.
As shown in (1), one end of the L-shaped arm 19 pushes down the valve member 8, and the valve body 26 is separated from the seat portion 15 to the rear end side of the sleeve 4 to be switched to the water flowing state.

In this embodiment, the size of the valve body 26 is made substantially the same as the diameter of the seat portion 15 and the seat portion 15 is seated by an O-ring 14 provided around the valve portion 26. When the upper end of the operation lever 23 comes into contact with the regulating protrusion 27, the valve body 26 maintains the water-stop state in which the seat portion 15 seats against the spring 11. That is, the upper end of the operation lever 23 and the regulation protrusion 27 together constitute a regulation mechanism according to the present invention. In addition to this, in the water blocking state in which the valve body 26 seats the seat portion 15, the end of the valve body 8 may be just brought into contact with the main body 2 or one end of the L-shaped arm 19 may be just It may contact the side surface of the insertion hole 20.

Although not specifically shown, the size of the valve body 26 is controlled by the seat portion 15.
And the valve body 26 may be located on the rear end side of the sleeve 4 with respect to the seat portion 15. In this case, the valve body 26 itself comes into contact with the seat portion 15 and maintains a water-stop state against the spring 11, so that the valve body 26 and the seat portion 15 combine to form a regulating mechanism according to the present invention. Will do. However, in this case, the sheet portion 15
The valve member 8 and the valve element 26 which are larger than the diameter of the valve member must be located. Therefore, if the valve member 8 and the valve body 26 are integrally formed, they cannot be incorporated into the sleeve 4 and must be formed as separate members. On the other hand, if the size of the valve member 26 is made substantially the same as the diameter of the seat portion 15 as in this embodiment, even if the valve body 26 is formed integrally with the valve member 8, It becomes possible to be built in.

In the sprinkling nozzle of the embodiment described above, the fluid supplied from the hose stays upstream of the sheet portion 15 when the water is stopped. However, since the valve member 8 is located closer to the main body 2 than the seat portion 15, the retained high-pressure fluid does not act on the O-ring 10 provided around the valve member 8. Therefore, the load on the O-ring 10 and the like can be reduced, and the sealing function can be maintained even after long-term use. Further, since the retained high-pressure fluid does not act on the valve member 8, it is possible to design the durability with a margin.

Furthermore, the amount of fluid that stays on the watering nozzle side can be reduced as compared with the above-described conventional example, so that even if the staying fluid freezes, the overall expansion amount can be reduced. Therefore, the burden on the sleeve 4 and the valve member 8 can be reduced, and the sleeve 4 and the valve member 8 can be hardly broken. Further, in the watering nozzle of this embodiment, since the seat portion 15 is used as a spring receiver, the spring receiver 13 which is a separate member as in the above-described conventional example is unnecessary. Therefore, cost can be reduced by reducing the number of parts.

In this embodiment, the grip cover 3
The sleeve 4 and the sleeve 4 together constitute a grip portion according to the present invention.

In this embodiment, as the elastic member,
Although the spring 11 is interposed between the valve member 8 and the seat portion 15, the shape and the installation position are not limited. For example, the spring may be provided outside the sleeve 4 instead of inside the sleeve 4 and the elastic force may be applied to the L-shaped arm or the operation lever 23. In short, the elastic force of the spring
Act directly or indirectly on the valve body 26
I just need. Moreover, when the valve member 8 is pressed down to switch to the water passing state as in this embodiment, the spring 11 may have a natural length while the valve body 26 is in the water blocking state in which the seat portion 15 seats. In this state, the water pressure acts and the valve element 26 seats the seat portion 15.

Further, in this embodiment, the operation lever 23
Is operated, the valve member 8 is pushed down to switch to the water-passing state. Conversely, the valve member 8 may be pushed up to switch to the water-passing state. In this case, the L-shaped arm 19 is turned upside down and the spring 11
Will act in the direction of pushing down the valve member 8. However, applying the elastic force in the direction in which the valve member 8 is pushed down is in the opposite direction to the flow of the fluid, so that the spring 11 has an elastic force enough to maintain the water stop state against the fluid pressure. Required. Therefore, the size of the spring 11 is increased, and when switching to the water-flowing state, the operation lever 23 must be strongly gripped against its elastic force, and the operability may be deteriorated.

[0023]

According to the first aspect of the present invention, since the valve member is located closer to the main body than the seat portion, the retained high-pressure fluid is reduced.
Does not act on the valve member. Therefore, the burden on the seal member provided on the valve member can be reduced, and the valve member can be designed with a sufficient durability when designing the valve member. Further, since the valve member is located closer to the main body than the seat portion, the seat portion can be arranged as close to the rear end of the grip portion as possible. Therefore, the amount of fluid that stays in the watering nozzle can be reduced, and even if the fluid freezes, the watering nozzle can be prevented from breaking from inside. Moreover, the valve element is used as a valve member.
Because it is fixed, the elastic member to be acted on the valve
The degree of freedom can be given to the placement position. For example, elastic
Even if the elastic force of the member acts on the valve member,
Sexual force can be applied to the dialect indirectly.

According to the second aspect, in the first aspect, since the seat portion is used as a spring receiver, the number of parts can be reduced and cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view of a watering nozzle according to an embodiment, showing a water stop state.

FIG. 2 is a perspective view of a main part of the watering nozzle of the embodiment, showing a water stop state.

FIG. 3 is a cross-sectional view of the watering nozzle according to the embodiment, showing a water flowing state.

FIG. 4 is a perspective view of a main part of the watering nozzle according to the embodiment, showing a water flowing state.

FIG. 5 is a cross-sectional view of a watering nozzle of a conventional example, showing a water-stop state.

FIG. 6 is a perspective view of a main part of a watering nozzle of a conventional example, showing a water stop state.

FIG. 7 is a cross-sectional view of a watering nozzle of a conventional example, showing a water-passing state.

[Explanation of symbols]

 2 Body 3 Grip cover 4 Sleeve 5 Flow path 6 Hose connection joint 7 Head body 8 Valve member 11 Spring 15 Seat part 23 Operation lever 26 Valve body 27 Regulation protrusion

Claims (2)

(57) [Claims] A body provided with a fluid ejection port, and a grip provided on the body, and a fluid supplied from a rear end side of the grip passes through the grip and the body to form a fluid jet. In a watering nozzle configured to be ejected from an outlet, a flow passage formed in a grip portion, a seat portion provided in the middle of the flow passage, and a valve member which is slidably incorporated in the main body side of the flow passage toward the main body side relative to the seat portion. A valve element fixed to the end of the valve member on the seat portion side ; an elastic member that directly or indirectly applies an elastic force to the valve element; and a valve in a water-stop state in which the valve element seats the seat portion. A water spray nozzle, comprising: a regulating mechanism for maintaining the position of the member; and an operation lever for moving the valve member against the elastic force of the elastic member and switching the valve body to a water-permeable state by separating the valve body from the seat portion. . 2. When the operating lever is operated by interposing a spring between the valve member and the seat portion as an elastic member, the valve member is pushed down against the spring, and the valve body is moved from the seat portion to the grip portion. 2. The watering nozzle according to claim 1, wherein the watering nozzle is configured to be switched to a water-passing state by separating to a rear end side.