JP2020000979A - Sprinkler nozzle - Google Patents

Abstract

To provide a sprinkler nozzle of which an occupied space of components can be compacted.SOLUTION: A sprinkler nozzle has: a nozzle body 6 in which a water flow channel 10 is formed; a control lever 15 which is so fitted as to be capable of approaching and separating from the nozzle body 6; an on-off valve 13 which opens/closes the flow channel 10; and an intermediate lever 16 which converts approaching/separating motion of the control lever 15 into opening/closing motion of the on-off valve 13. In the sprinkler nozzle, a lock mechanism, which comprises an engaging piece 18 provided on the nozzle body 6, and an engagement guide 19 which is provided on the control lever 15 and has an engagement recess 21 with which the engaging piece 18 is engaged and holds a positional relationship between the control lever 15 and the nozzle body 6, is provided, the intermediate lever 16 is located on a movement path of the engagement guide 19, and the engagement guide 19 has a notch 22 which accommodates at least a part of the intermediate lever 16 in approaching/separating motion of the control lever 15 to the nozzle body 6.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a watering nozzle mainly used for horticulture, cleaning, agriculture and the like at home and connected to the tip of a water supply facility such as a water supply through a hose to perform watering, and is particularly operated by a user in a hand. Watering nozzle.

  At home, a watering nozzle that is attached to the end of a hose and can arbitrarily switch between watering and water stopping is widely used for horticulture, agriculture, cleaning, and the like. Such a watering nozzle receives a supply of water from a water supply facility such as a water supply via a hose, and performs watering from a watering port formed at the tip.

In the conventional watering nozzle, as shown in FIG. 10 (a), a water flow path 10 connecting the inlet 2 at the base end to the watering port 5 at the tip is formed inside the nozzle body 6, and this flow path is formed. An opening / closing valve including an opening / closing valve seat 7a and an opening / closing valve body 13 is disposed therein, and an operation lever 15 is attached to the front of the nozzle body 6 so as to be able to approach and separate. Has been approached and separated from the on-off valve seat 7a to open and close the on-off valve.
In such a watering nozzle, there is a watering nozzle in which a middle lever 16 that converts the approaching / separating movement of the operation lever 15 into the opening / closing movement of the on-off valve is disposed between the operation lever 15 and the nozzle body 6.

  Further, in such a conventional watering nozzle, by locking the operation lever 15 with the open / close valve open, a lock that allows the user to maintain the watering state without continuing to hold the operation lever 15 is provided. Some were equipped with a mechanism.

As shown in FIG. 10B, a locking guide 19 having locking recesses 21 formed on both side surfaces, and a metal bar bent in a U-shape, and both ends bent inward to form locking pieces 18. There is a watering nozzle provided with a lock mechanism including the locking arm 17 which is provided.
When the operation lever 15 of the sprinkling nozzle is squeezed, the locking piece 18 of the locking arm 17 attached to the nozzle body 6 slides along the side surface of the locking guide 19 attached to the operation lever 15, and the locking recess is formed. The position of the operation lever 15 with respect to the nozzle main body 6 is fixed by being locked to the nozzle 21. When the position of the operation lever 15 is fixed, the position of the on-off valve body 13 is also fixed via the middle lever 16, so that the on-off valve can be locked in the valve open state.
Further, when the operating lever 15 is squeezed again from the locked state, the locking piece 18 is disengaged from the locking concave portion 21, and the locked state is released, so that the on-off valve can be closed again.

  In the conventional example of FIG. 10 and the conventional example of Patent Document 1, the middle lever 16 and the locking guide 19 are often arranged between the operation lever 15 and the nozzle body 6 due to their functions. In this case, since the position of the middle lever 16 and the position of the locking guide 19 were vertically separated from each other, the operation lever 15 was inevitably lengthened in the vertical direction, and the size of the watering nozzle was increased.

In this specification, the difference between the movement amount of the active-side component and the movement amount of the passive-side component between the two attached components is referred to as a fitting gap. The fitting gap is generated due to play at the time of contact between two parts or play in design.
When the locking guide 19 is locked by the locking arm 17 when the conventional watering nozzle is locked in the valve open state, the fitting of the locking guide 19 and the operation lever 15 is 0.2 to 0.4 mm. Gap occurs. Also, a fitting gap of 0.2 to 0.4 mm is generated at the place where the operation lever 15 and the nozzle body 6 are attached. Then, the operation lever 15 positioned through these fitting gaps abuts on the middle lever 16 to hold the position of the on-off valve body 13. The range in which the operation lever 15 approaches and separates from the nozzle body 6 is 2 to 3 cm.

Since the engagement gap is generated in multiple stages as described above, after the locking guide 19 and the locking arm 17 are locked so as not to move at a certain position, the on-off valve body 13 is not immediately fixed in position. In some cases, it is fixed at a position slightly moved toward the on-off valve seat 7a.
Therefore, even if the operation lever 15 is brought close to the nozzle body 6 and locked by the lock mechanism, the opening / closing valve body 13 is held in a state relatively close to the valve closing, and the amount of water flow in the locked state is reduced. There was a problem.

Japanese Patent No. 4482832

The present invention has been made to solve the above problems, and has as its object to provide a watering nozzle that can reduce the space occupied by components.
Another object of the present invention is to provide a watering nozzle having a small gap (shift) between the locking of the lock mechanism and the opening and closing of the on-off valve.

Means for solving the above problems in the present invention are as follows.
According to a first aspect of the present invention, there is provided a nozzle main body in which a water flow path connecting an inlet to a water spout is formed, an operation lever attached to the nozzle main body so as to be able to approach and separate from the nozzle main body, and arranged in the flow path. An opening / closing valve that opens and closes the flow path in accordance with the positional relationship between the operating lever and the nozzle body, and converts an approaching / separating movement of the operating lever into an opening / closing movement of the opening / closing valve. A watering nozzle having a middle lever, a locking piece provided on the nozzle body, and a sliding path provided on the operation lever, wherein the locking piece slides as the operating lever approaches and separates from each other. And a locking mechanism comprising a locking guide having a locking recess for holding the positional relationship between the operating lever and the nozzle body by locking the locking piece in the path of the sliding path. Provided and above A lever is disposed on a movement path of the locking guide, and the locking guide accommodates at least a part of the middle lever at least at a point in time when the operating lever approaches and separates from the nozzle body. It is characterized by having a notch.

  According to a second aspect of the present invention, there is provided a nozzle main body in which a water flow path connecting an inlet to a water spout is formed, an operation lever attached to the nozzle main body so as to be able to approach and separate from the nozzle main body, and arranged in the flow path. An opening / closing valve that opens and closes the flow path in accordance with the positional relationship between the operating lever and the nozzle body, and converts an approaching / separating movement of the operating lever into an opening / closing movement of the opening / closing valve. A watering nozzle having a middle lever, a locking piece provided on the nozzle body, and a sliding path provided on the operation lever, wherein the locking piece slides as the operating lever approaches and separates from each other. And a locking mechanism including a locking guide having a locking recess for holding the positional relationship between the operation lever and the nozzle body by locking the locking piece in the path of the sliding path. Provided and above A lever is disposed on a movement path of the locking guide, and when the operating lever approaches the nozzle body, the middle lever is pressed by the locking guide to open the open / close valve. And

  According to the first invention, the middle lever is disposed on the movement path of the locking guide, and the locking guide is provided at least at a point in time when the operating lever approaches and separates from the nozzle body. By having a notch for accommodating at least a part of the middle lever, a space for disposing the middle lever and the locking guide can be made smaller than that of a conventional watering nozzle, and the whole watering nozzle can be downsized. Can be.

  According to the second invention, the middle lever is arranged on the movement path of the locking guide, and when the operating lever approaches the nozzle body, the middle lever is pressed by the locking guide. By opening the on-off valve, the gap between opening and closing of the on-off valve and locking and releasing of the lock mechanism can be reduced.

(A) is a partially cutaway arrow view showing a valve closing state of the watering nozzle according to the first embodiment of the present invention, and (b) is an enlarged view of a portion A in (a). (A) is a longitudinal cross-sectional view which shows the valve closing state of the watering nozzle, (b) is an enlarged view of the B section in (a). It is a figure which shows the middle lever of the water sprinkling nozzle, (a) is a perspective view, (b) is a side view. It is a perspective view which shows the locking arm of the watering nozzle. It is a figure which shows the locking guide of the water sprinkling nozzle, (a) is a front perspective view, (b) is a rear perspective view, (c) is a top view, (d) is a side view. (A) is a partial cutaway arrow view showing a locked state of the watering nozzle, and (b) is an enlarged view of a portion C in (a). (A) is a longitudinal cross-sectional view showing the locked state of the watering nozzle, and (b) is an enlarged view of a D part in (a). It is a longitudinal section showing the watering nozzle concerning a second embodiment of the present invention. It is a longitudinal section showing the watering nozzle concerning a third embodiment of the present invention. (A) is a notched perspective view which shows the conventional watering nozzle, and is an enlarged view of the E section in (b) and (a).

Hereinafter, the watering nozzle according to the first embodiment of the present invention will be described.
This watering nozzle is a device that is connected to the tip of water supply equipment such as water supply via a hose to spray water in horticulture, agriculture, cleaning, and other uses, and is used by the user in hand. is there.

As shown in FIGS. 1 and 2, the sprinkling nozzle is formed in a substantially cylindrical shape extending upward from a base end formed with an inlet 2 that is connected to a hose or the like to introduce water. It has the formed linear nozzle body 6.
As shown in FIG. 2, a water flow path 10 extending from the inlet 2 to the sprinkler 5 is formed inside the nozzle body 6.
The nozzle body 6 is formed by assembling a plurality of covers that cover the outer periphery of the water pipe 7, the hose nipple 8, the water discharge head 9, and the like having the flow path 10 therein, and some of these are integrally formed. It may be.

The nozzle main body 6 is formed in a substantially cylindrical shape extending upward from the base end portion, so that a user can grip and operate the nozzle main body by hand.
At the base end of the nozzle body 6, an inlet 2 for introducing water from a water supply facility to the center thereof is provided on the outer peripheral surface of an O-ring and irregularities for connecting to a receiver (not shown) attached to a hose. A hose nipple 8 having an opening is attached below the water pipe 7.

As shown in FIG. 2, the watering nozzle has an on-off valve that switches between water passage and water stoppage in the flow path of the water passage pipe 7.
The on-off valve has an on-off valve body 13 arranged in the flow path 10 on the nozzle body 6 side of the water pipe 7. The on-off valve body 13 is formed in a cylindrical shape with a lid inscribed in the water pipe 7, and has a protruding valve body portion 13a formed on an upper portion of the lid.
As shown in FIG. 2 (b), the valve body portion 13a is formed in a step shape in which the diameter gradually decreases as approaching the distal end. The valve portion 13a may be formed in a stepped shape as described above, or may be formed in a substantially conical shape whose diameter gradually decreases as approaching the distal end.
The valve body 13a is provided with an O-ring 13b for closing the flow path 10 by contacting the on-off valve seat 7a.
As shown in FIG. 2A, O-rings 13c, 13c are provided at two places on the outer peripheral surface of the on-off valve body 13 so that water does not flow around the on-off valve body 13 and the O-ring is provided. 13c, a water passage 13d is opened in the outer peripheral surface above 13c. The water supplied from the base end (below) of the water flow pipe 7 passes through the inside of the on-off valve body 13, flows out to the outer periphery from the water flow port 13 d, and flows downstream.

As shown in FIG. 2B, the valve body portion 13 a of the on-off valve body 13 is formed to have a larger diameter than the on-off valve seat 7 a provided on the water pipe 7, and the hose nipple 8 and the on-off valve body 13 The flow path 10 is closed by being urged toward the on-off valve seat 7a by the coil spring 14 interposed therebetween (water-stop state).
As shown in FIG. 7, when the valve body 13 a is separated from the on-off valve seat 7 a against this urging force, the flow path 10 is opened, and water can be sprayed from the water spout 5.
Since the valve body portion 13a of the on-off valve body 13 is formed in a stepped shape, the flow rate of water passing through the on-off valve gradually increases as the on-off valve body 13 moves away from the on-off valve seat 7a.

  As shown in FIGS. 1 and 2, an operation lever 15 is attached in front of the nozzle body 6 to operate the on-off valve body 13. The operation lever 15 has a lower end as a fixed end and is attached to a lower portion of the nozzle body 6 and has an upper end as a free end. Therefore, the operation lever 15 can be rotated in the front-rear direction when a user grips the nozzle body 6 with a hand. Has become.

As shown in FIG. 2, the water pipe 7 has an opening on the front surface. As shown in FIGS. 2 and 3, the middle lever 16 having an L-shaped vertical section abuts on one end (upper side) with a locking guide 19 integrally attached to the operation lever 15, and the other end (rear side). And enters the opening of the water flow pipe 7 to abut on the on-off valve 13 and is rotatably supported by the water flow pipe 7 with the L-shaped bent portion as a fulcrum 16a. Therefore, when the user squeezes the operation lever 15, the opening / closing valve body 13 is separated from the opening / closing valve seat 7 a via the middle lever 16 against the urging force of the coil spring 14, and can be brought into a water-permeable state.
Since the opening of the water passage pipe 7 is always located between the two O-rings 13c of the on-off valve body 13, water does not leak from the opening to the outside of the water passage pipe 7.

A lock mechanism is provided between the nozzle body 6 and the operation lever 15 for holding the on-off valve in a water-permeable state.
The locking mechanism includes a locking arm 17 attached to the water passage pipe 7 of the nozzle body 6 and a locking guide 19 attached to the operation lever 15, as shown in FIGS.

The locking arm 17 is formed of a rod made of a material such as an elastically deformable metal.
As shown in FIG. 4, the locking arm 17 is formed in a substantially U-shape in plan view having a pair of left and right arm portions 17a extending forward, and a pair of inwardly projecting tips is provided at the tip of each arm portion 17a. Locking pieces 18, 18.
Note that, in this specification, the left-right direction refers to the left-right direction when the approach / separation direction between the operation lever 15 and the nozzle body 6 is defined as the front-back direction.

  By fitting the locking arm 17 around the water pipe 7 (see FIG. 10), the locking arm 17 can be attached to the water pipe 7 as shown in FIG. ing.

As shown in FIG. 5, the locking guide 19 has a projecting portion 19 a protruding from an upper end thereof, which is assembled to an inner surface of the operation lever 15.
At the center of the height of the locking guide 19, sliding paths 20 on which the locking pieces 18 of the locking arm 17 slide are formed on both left and right side surfaces, respectively.
In the sliding path 20, a heart-shaped heart cam portion 19c turned upside down is erected from the side of the locking guide 19, and the locking piece 18 slides around the heart cam portion 19c. At the center of the heart cam portion 19c, a locking concave portion 21 for locking the locking piece 18 is formed to be recessed rearward.
The locking recess 21 may be recessed in the vertical direction in addition to being recessed in the front-rear direction on the heart cam portion 19c.
A ridge 19d for controlling the sliding direction of the locking piece 18 is provided in front of the heart cam 19c.

  As shown in FIGS. 5A and 5B, upper and lower walls are erected above and below the slideway 20 to limit the movable range of the locking piece 18, The front and rear are open. By opening the front as well as the rear of the slideway 20, even when the operation lever 15 is excessively pushed by some impact, the locking piece 18 can be released to the front to prevent breakage.

In the center of the rear surface of the locking guide 19, a housing portion 22, which is a large cutout for housing the middle lever 16, is provided (FIGS. 5B and 5C).
From the upper part of the locking guide 19, a pressing portion 19b for abutting against and pressing the middle lever 16 is provided to protrude rearward (FIGS. 5B and 5D).

  As a material of the locking guide 19, a thermoplastic resin having excellent wear resistance such as POM (polyacetal) and ABS (acrylonitrile butadiene styrene copolymer) can be used.

When the watering nozzle is assembled by attaching the locking guide 19 to the operation lever 15, as shown in FIG. 1B, the locking pieces 18, 18 sandwich the locking guide 19 from the left and right when the on-off valve is in the water stopped state. Are located on the slideway 20 behind the heart cam portion 19c and the locking recess 21.
As shown in FIGS. 1B and 2B, in the watering nozzle, the middle lever 16 and the locking guide 19 are arranged at the same height. The middle lever 16 is disposed immediately behind the locking guide 19, and a portion above the fulcrum 16 a (rotation axis) of the middle lever 16 is housed in a housing portion 22 at the center of the locking guide 19. That is, when viewed from the left and right as shown in FIG. 1, the portion above the fulcrum 16 a of the middle lever 16 appears to overlap with the formation location of the slide path 20 of the locking guide 19.
The upper part of the middle lever 16 is in contact with the pressing portion 19b of the locking guide 19.

When the user squeezes the operation lever 15 to approach the nozzle body 6, the pressing portion 19b of the locking guide 19 pushes the upper part of the middle lever 16 backward to rotate, so that the rear end of the middle lever 16 is opened and closed. The valve body 13 is pushed down, the on-off valve is opened, and water is discharged from the water spout 5 (FIG. 7).
The locking piece 18 slides on the slide path 20 in accordance with the rotation of the operation lever 15 by the user.
When the operation lever 15 approaches the nozzle body 6 and opens the on-off valve, the locking piece 18 slides forward on the slide path 20 above the heart cam portion 19c, and is forward of the locking recess 21 and is located on the crest 19d. Reach the upper side.

  Here, when the user loosens the grip of the operation lever 15, the on-off valve tries to return to the water stop state by the coil spring 14, and the operation lever 15 is separated from the nozzle body 6 via the middle lever 16 and the locking guide 19. Pushed in the direction. However, as shown in FIG. 6B, the locking piece 18 enters the locking recess 21 and is locked with the heart cam portion 19c, thereby preventing the operation lever 15 from separating from the nozzle body 6, and The open / close valve is kept in a water-permeable state as described above (locked state).

When the user further squeezes the operation lever 15 from this locked state, the locking piece 18 slides forward along the slide path 20 from the locking recess 21 as the operation lever 15 approaches the nozzle body 6. Into the heart cam portion 19c and below the mountain portion 19d.
Next, when the user releases the operation lever 15, the locking piece 18 slides on the sliding path 20 below the heart cam portion 19c and returns to the initial position behind the heart cam portion 19c, whereby the lock is released. At this time, the open / close valve returns to the water stop state by the coil spring 14, and the operation lever 15 is pressed forward via the middle lever 16 and the locking guide 19, and is separated from the nozzle body 6 (FIGS. 1 and 2). .

In the watering nozzle according to the first embodiment, the middle lever 16 is disposed on the movement path of the locking guide 19, and the cut lever for accommodating at least a part of the middle lever 16 when the operation lever 15 approaches the nozzle body 6. Since the locking guide 19 has the recessed accommodation portion 22, the space for disposing the middle lever 16 and the locking guide 19 can be reduced.
Therefore, the shape of the operation lever 15 can be made compact, and as a result, the whole watering nozzle can also be made compact.

Further, when the watering nozzle of the first embodiment is locked in the valve open state, when the locking guide 19 is locked by the locking arm 17, the pressing portion 19 b of the locking guide 19 fixed in position is directly connected to the middle lever 16. The position of the on-off valve body 13 is kept in contact therewith. Therefore, it is possible to reduce the fitting gap generated in the conventional watering nozzle, to reduce the gap between the locking of the lock mechanism and the opening and closing of the on-off valve, and to lock the state with a large amount of water flow. Can be.
For example, a fitting gap of 0.2 to 0.4 mm between the locking guide 19 and the operating lever 15 and a fitting gap of 0.2 to 0.4 mm between the operating lever 15 and the nozzle body 6 which have occurred conventionally. As a result of both reductions, the on-off valve body 13 is locked at a position far from the valve seat. As a result, the minimum flow path cross-sectional area of the on-off valve is increased by 5.6 to 7.1 mm ² from the related art, and is 1.2 times that of the related art. As a result, the flow rate (water spray rate) under the use condition of the hydrostatic pressure of 0.3 MPa was improved from the conventional 6 liters per minute to 7 liters per minute.

Furthermore, in the watering nozzle of the first embodiment, since the locking guide 19 comes into contact with and presses the middle lever 16, the operation lever 15 does not directly contact the middle lever 16.
Since friction occurs in a contact portion between the middle lever 16 and a member that presses and rotates the same, the conventional watering nozzle has a high abrasion resistance such as ABS on the operation lever 15 that contacts the middle lever 16. Materials had to be used. However, since the operation lever 15 does not contact the middle lever 16 in the watering nozzle of the first embodiment, an inexpensive material such as PP (polypropylene) having low abrasion resistance is used for the operation lever 15 which is relatively large and requires a large amount of material. Can also be used, and material costs can be reduced. Instead, a high abrasion resistance is required for the locking guide 19. However, since the locking guide 19 has conventionally been made of a material having abrasion resistance for sliding the locking piece 18, this is because There is no increase in material costs.

<Second embodiment>
In the watering nozzle according to the second embodiment shown in FIG. 8, similarly to the first embodiment, an accommodation portion 22 which is a cutout for accommodating the middle lever 16 is provided in the center of the back surface of the locking guide 19. . When the watering nozzle is assembled, the middle lever 16 is disposed immediately behind the locking guide 19, and the portion above the fulcrum 16 a (rotation axis) of the middle lever 16 is housed in the housing portion 22 of the locking guide 19. I have. That is, when viewed from the left and right, the portion above the fulcrum 16a of the middle lever 16 appears to overlap with the position where the sliding path 20 of the locking guide 19 is formed.
On the other hand, unlike the first embodiment, the locking guide 19 does not have the pressing portion, and therefore does not press the middle lever 16. When the operating lever 15 is squeezed to approach the nozzle body 6, the operating lever 15 comes into contact with the upper part of the middle lever 16 to be pressed and rotated to open the on-off valve.

  In the watering nozzle according to the second embodiment as well, the middle lever 16 is arranged on the movement path of the locking guide 19 and houses at least a part of the middle lever 16 when the operation lever 15 approaches the nozzle body 6. Since the locking guide 19 has the recess 22, the space for disposing the middle lever 16 and the locking guide 19 can be reduced.

In the first embodiment and the second embodiment, when the operation lever 15 rotates from the state farthest from the nozzle body 6 to the state closest to the nozzle body 6, the middle lever 16 consistently moves the locking guide 19. It is housed in the housing part 22.
However, as a modified example, in a state where the operation lever 15 is farthest from the nozzle body 6, the middle lever 16 is arranged behind the locking guide 19 and is not housed in the housing portion 22. 6 may be accommodated in the accommodating part 22 (not shown).

Further, as another modified example, the middle lever 16 is housed in the housing portion 22 in a state where the operation lever 15 is farthest from the nozzle body 6, but in a state where the operation lever 15 is closest to the nozzle body 6, A part of the middle lever 16 may be formed so as to move forward from the locking guide 19 so as not to be housed in the housing part 22 (not shown).
In this case, not only the accommodation portion 22 is provided in the locking guide 19, but also a central portion connecting the left and right side walls having the sliding path 20 is appropriately notched (not shown), and the middle lever 16 is moved forward. Make sure it can be passed.

<Third embodiment>
The watering nozzle according to the third embodiment shown in FIG. 9 includes a grip portion 3 formed in a substantially cylindrical shape extending upward from a base end portion formed with an inlet 2 for introducing water by being connected to a hose or the like. A nozzle portion 4 extending forward from the upper end of the grip portion 3 and having a sprinkling port 5 formed at the distal end; ing.
The orientation of the grip part 3 may be vertical, but may be one that is inclined upward from the vertical direction and extends upward as shown in FIG.
The nozzle part 4 is formed in a substantially cylindrical shape extending forward from the upper end of the grip part 3. A water discharge head 9 is attached to a tip of the nozzle unit 4, and a water spout 5 is formed at a tip of the water discharge head 9.

The watering nozzle according to the third embodiment is different from the first embodiment in that the middle lever 16 is disposed vertically away from the location where the sliding path 20 of the locking guide 19 is formed. Does not have a housing portion 22 for housing the middle lever 16. The locking arm 17 is arranged at the same height as the locking guide 19 and is attached to the nozzle body 6.
On the other hand, in the watering nozzle of the third embodiment, a plate-shaped pressing portion 19b projecting upward from the locking guide 19 is provided, and this is in contact with the upper portion of the middle lever 16 from the front.
Also, unlike the first embodiment, the operation lever 15 is attached to the upper part of the grip part 3 with the upper end as a fixed end and the lower end as a free end, so that the user can squeeze with the hand holding the grip part 3. , So that it can rotate in the front-rear direction.

  When the user squeezes the operation lever 15 to approach the nozzle body 6, the pressing portion 19b of the locking guide 19 pushes the upper part of the middle lever 16 backward to rotate, so that the rear end of the middle lever 16 is opened and closed. The valve 13 is pushed down, the on-off valve is opened, and the water is discharged from the water spout 5.

  Also in the watering nozzle of the third embodiment, when the locking concave portion 21 of the locking guide 19 is engaged with the locking piece 18 of the locking arm 17, the pressing portion 19b of the locking guide 19 whose position is fixed directly contacts the middle lever 16. To maintain the position of the on-off valve body 13. Therefore, it is possible to reduce the fitting gap generated in the conventional watering nozzle, to reduce the gap between the locking of the lock mechanism and the opening and closing of the on-off valve, and to lock the state with a large amount of water flow. Can be.

Reference Signs List 5 water spout 6 nozzle main body 7 water passage pipe 7a on-off valve seat 10 flow path 13 on-off valve 13a valve 13b O-ring 14 coil spring 15 operating lever 16 middle lever 16a fulcrum 17 locking arm 17a arm 18 locking piece Reference Signs List 19 locking guide 19a projecting portion 19b pressing portion 19c heart cam portion 19d mountain portion 20 sliding path 21 locking concave portion 22 housing portion

Claims (2)

A nozzle body internally formed with a water flow path connecting the inlet to the sprinkler,
An operation lever attached to the nozzle body so as to be capable of approaching and separating;
An on-off valve arranged in the flow path and interlocked with the operation lever to open and close the flow path in accordance with a positional relationship between the operation lever and the nozzle body;
A watering nozzle having a middle lever that converts the approaching / separating movement of the operation lever into the opening / closing movement of the on-off valve,
A locking piece provided on the nozzle body,
The sliding lever is provided on the operating lever, and forms a sliding path on which the locking piece slides with the approach and separation of the operating lever. A lock mechanism comprising an operation lever and a locking guide having a locking recess for maintaining a positional relationship between the nozzle body and the nozzle body is provided, and
The middle lever is arranged on the movement path of the locking guide, and the locking guide houses at least a part of the middle lever at least at a point in time when the operating lever approaches and separates from the nozzle body. A sprinkling nozzle having a notch formed therein. A nozzle body internally formed with a water flow path connecting the inlet to the sprinkler,
An operation lever attached to the nozzle body so as to be capable of approaching and separating;
An on-off valve arranged in the flow path and interlocked with the operation lever to open and close the flow path in accordance with a positional relationship between the operation lever and the nozzle body;
A watering nozzle having a middle lever that converts the approaching / separating movement of the operation lever into the opening / closing movement of the on-off valve,
A locking piece provided on the nozzle body,
The sliding lever is provided on the operating lever, and forms a sliding path on which the locking piece slides with the approach and separation of the operating lever. A lock mechanism comprising an operation lever and a locking guide having a locking recess for maintaining a positional relationship between the nozzle body and the nozzle body is provided, and
The middle lever is arranged on the movement path of the locking guide, and when the operating lever approaches the nozzle body, the middle lever is pressed by the locking guide to open the on-off valve. Watering nozzle.

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