JP5749661B2 - Watering nozzle - Google Patents

Description

  The present invention relates to a watering nozzle that is mainly used in gardening, cleaning, agriculture, etc. at home, etc., and is connected to the tip of a water supply facility such as a water supply via a hose, and is operated by a user in particular. It relates to a watering nozzle.

  At home, watering nozzles that are attached to the tip of a hose and can be arbitrarily switched between watering and water stopping are widely used for gardening, agriculture, cleaning, and the like. Such a watering nozzle receives water from a water supply facility such as a water supply via a hose and sprays water from a watering port formed at the tip.

In the conventional watering nozzle, as shown in FIG. 14, a water flow path 10 connecting the inlet port of the base end to the water sprinkling port 5a at the front end is formed inside the nozzle body 6, and an on-off valve is formed in this flow path. An opening / closing valve comprising a seat 7a and an opening / closing valve body 13 is disposed, and an operation lever 15 is attached to the front of the nozzle body 6 so as to be able to approach and separate. There was one that opened and closed the on-off valve by approaching and separating from 7a.
In addition, in such a conventional watering nozzle, the operation lever 15 is fixed in a state where the on-off valve is opened, so that the user can maintain the watering state without continuing to hold the operation lever 15. Some had a mechanism.

As shown in FIGS. 15 and 16, Patent Document 1 discloses that a locking receiving member 19 having a plurality of cam locking recesses 21 formed on both side surfaces and a metal bar bent in a U shape, The watering nozzle provided with the lock mechanism which consists of the latching arm 28 which bent inside and formed the latching piece 29 is described.
When the operation lever 15 of the watering nozzle is gripped, the locking piece 29 of the locking arm 28 attached to the nozzle body 6 slides along the side surface of the locking receiving member 19 attached to the operation lever 15 to engage the cam. The operation lever 15 was able to be fixed at the position where the on-off valve was opened by being locked by the stop recess 21.
Further, by grasping the operation lever 15 again from this locked state, the locking piece 29 was released from the cam locking recess 21, and the locked state was released and the on-off valve could be closed again.

  Furthermore, since this watering nozzle formed the several cam latching recessed parts 21 and 21 in the latching receiving member 19, the operation lever 15 was able to be locked in several positions, Therefore The opening-and-closing valve is different from several It was fixed at the opening, and the amount of sprinkling could be adjusted.

  However, in the conventional watering nozzle, the cam locking recess 21 is provided in the vertical direction (FIG. 16) or the front-rear direction (the approaching and separating direction of the operation lever) (see FIG. 15). Since the locking piece 29 is in contact with and slides on the upper and lower peripheral walls of the sliding path 20 and the heart cam portion 19c while the operation lever 15 is gripped, the locking piece 29 is biased toward the locking piece 29. There was a case where wear occurred and deformation occurred, and smooth sliding could not be performed as in the beginning.

Further, in the conventional watering nozzle, the locking piece 29 is released from the cam locking recess 21 and the locked state is released even when a slight force in the front-rear direction is applied to the operation lever 15 in the locked state. was there.
Furthermore, the conventional water spray nozzle locking mechanism has a design limitation because the heart cam portion 19c of the lock receiving member 19 must be provided with the cam lock recess 21 in the vertical direction or the front-rear direction. It was high.

No. 2011-050827

  The present invention has been made to solve the above problems, and in a watering nozzle having a lock mechanism that can fix the on-off valve of the flow path at the valve open position, the locking mechanism is reliably locked (locked). It is an object of the present invention to provide a watering nozzle including a lock mechanism that is improved, is less likely to cause uneven wear of members, and has improved design freedom.

In the present invention, means for solving the above problems are as follows.
A first invention includes a nozzle body in which a flow path of water connecting the inlet to the water spout is formed, an operation lever attached to the nozzle body so as to be able to approach and separate in the front-rear direction, and the flow path A watering nozzle that is disposed and interlocked with the operation lever, and having an on-off valve that opens and closes the flow path according to a positional relationship between the operation lever and the nozzle body, the nozzle body, the operation lever, A locking piece provided on one side of the sliding lever and a sliding path provided on the other side, wherein the locking piece slides while elastically deforming in the left-right direction as the operating lever approaches and separates. A locking mechanism is provided that includes a locking receiving member in which a locking recess is provided in the left-right direction to hold the positional relationship between the operation lever and the nozzle body by locking the locking piece in the movement path. It is characterized by that.

  According to a second aspect of the present invention, two or more locking recesses are provided in the slide path of the locking receiving member, and the locking piece is selectively engaged with one of the locking recesses. By being stopped, the lock mechanism capable of holding the operation lever at two or more positions with respect to the nozzle body is provided.

  The third invention is provided between the pair of locking pieces facing each other with a predetermined interval in the left-right direction and the pair of locking pieces, and the sliding paths are formed on both the left and right side surfaces, respectively. It has the above-mentioned latch receiving member which has at least a pair of latching crevice provided in the horizontal direction in the course of this slide way.

  According to a fourth aspect of the present invention, a cam portion is erected on the locking receiving member, and the locking piece is locked to the cam portion in the path of the sliding path so that the operation lever and the nozzle body are A cam locking recess that holds the positional relationship is recessed in the vertical direction or the front-rear direction, and the locking piece is selectively locked to the locking recess or the cam locking recess, thereby On the other hand, the lock mechanism capable of holding the operation lever at two or more positions is provided.

According to the first invention, the locking piece provided on one of the nozzle body and the operation lever and the locking piece provided on the other are elastic in the left-right direction as the operation lever approaches and separates. A sliding path that slides while deforming is formed, and the locking recess that holds the positional relationship between the operation lever and the nozzle body by locking the locking piece in the path of the sliding path By providing a lock mechanism comprising a latch receiving member that is recessed in the direction, the latch piece is reliably latched in the latch recess, and the on-off valve can be reliably locked in a water-filled state.
In addition, it is not necessary to slide the locking piece while making contact with the upper and lower peripheral walls and the heart cam portion of the sliding path. Therefore, compared to the case where the heart cam portion is provided with a cam locking recess recessed in the vertical direction or the front-rear direction. The uneven wear of the locking piece hardly occurs, and the product life can be prolonged.
Moreover, since the latching recessed part provided in the left-right direction can be easily formed in the path | route of a sliding path, manufacturing cost can be reduced.

  According to the second invention, two or more locking recesses are provided in the path of the sliding path of the locking receiving member, and the locking piece is selectively used as one of the locking recesses. By providing the lock mechanism that can hold the operation lever at two or more positions with respect to the nozzle body, the operation lever can be operated in two or more watering states with different water flow rates. The water flow rate can be maintained by locking.

  According to the third invention, the pair of locking pieces facing each other with a predetermined interval in the left-right direction and the pair of locking pieces are sandwiched between the pair of locking pieces, and the sliding paths are formed on both the left and right side surfaces, respectively. And the locking receiving member having at least a pair of locking recesses recessed in the left-right direction in the path of the sliding path, thereby firmly holding the locking receiving member between the pair of locking pieces. Since it can hold | maintain, a locking piece can be more reliably latched by a latching recessed part in a locked state.

  According to the fourth aspect of the invention, the cam portion is erected on the locking receiving member, and the locking piece is locked to the cam portion in the path of the sliding path, so that the operation lever and the nozzle body The cam locking recess that holds the positional relationship with the nozzle is provided in the vertical direction or the front-rear direction, and the locking piece is selectively locked to the locking recess or the cam locking recess, whereby the nozzle By providing the lock mechanism that can hold the operation lever at two or more positions with respect to the main body, the operation lever is locked to hold the water flow amount in two or more water spray states with different water flow amounts. Can do.

(A) is a partially cutaway side view (water stop 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 (water stop state) of the watering nozzle, and (b) is an enlarged view of a portion B in (a). (A) is a side view which shows the on-off valve body of the on-off valve of the watering nozzle, (b) is CC sectional drawing in (a). It is a figure which shows the latching arm of the watering nozzle, (a) is a front upper perspective view, (b) is a top view, (c) is a rear upper perspective view, (d) is a front view, (e) is a side view. (F) is a rear view, (g) is a front lower perspective view, (h) is a bottom view, and (i) is an enlarged view of part E in (b). (A) is explanatory drawing which shows the locking piece of the locking arm, (b) to (d) is explanatory drawing which shows the locking piece of another aspect, respectively, (e) is the locking piece of 1st embodiment, Explanatory drawing which shows latching with a latching recessed part, (f) is explanatory drawing which shows latching with the latching piece of another aspect, and a latching recessed part, (g) is the latching arm and latching of 1st embodiment. It is explanatory drawing which shows the clearance with a recessed part. It is a figure which shows the latching receiving member of the watering nozzle, (a) is front upper perspective view, (b) is a top view, (c) is back upper perspective view, (d) is a front view, (e) is a figure. (F) is a rear view, (g) is a front lower perspective view, (h) is a bottom view, and (i) is a rear lower perspective view. (A) is a side view of the same latch receiving member, (b) is an explanatory view in which a horizontal section by the S line in (a) is developed. (A) is a partially cutaway side view (water stop state) showing a weak water spray state of the water spray nozzle, and (b) is an enlarged view of an F portion in (a). (A) is a longitudinal cross-sectional view which shows the weak watering state of the watering nozzle, (b) is an enlarged view of the G section in (a). (A) is a partially cutaway side view (water stop state) showing a strong water spray state of the water spray nozzle, and (b) is an enlarged view of an H portion in (a). (A) is a longitudinal cross-sectional view which shows the strong water spray state of the water spray nozzle, (b) is an enlarged view of the I section in (a). It is a figure which shows the latching receiving member of the watering nozzle which concerns on 2nd embodiment of this invention, (a) is front upper perspective view, (b) is a top view, (c) is back upper perspective view, (d) (E) is a side view, (f) is a rear view, (g) is a front lower perspective view, (h) is a bottom view, and (i) is a rear lower perspective view. (A) is a side view of the same latch receiving member, (b) is an explanatory view in which a horizontal section taken along line S2 in (a) is developed. (A) is a longitudinal cross-sectional view which shows the conventional watering nozzle, (b) is an enlarged view of the on-off valve in (a). (A) is a partially cutaway perspective view showing a conventional watering nozzle, and (b) is an enlarged view of a portion J in (a). (A) is a partially cutaway perspective view showing another conventional watering nozzle, and (b) is an enlarged view of a portion K in (a).

Hereinafter, the watering nozzle which concerns on 1st embodiment of this invention is demonstrated.
This watering nozzle 1 is an instrument that performs watering by being connected to the tip of a water supply facility such as water supply via a hose in horticulture, agriculture, cleaning, and other uses. It is.

As shown in FIG. 1, the watering nozzle 1 includes a grip portion 3 formed in a substantially cylindrical shape extending upward from a base end portion 3a that is connected to a hose or the like to form a connection port 2 for introducing water, and the grip. It has a nozzle body 6 that extends forward from the upper end of the portion 3 and has water spouts 5a and 5b formed at the tip, and is formed in a bent shape such as an L shape, a dogleg shape, or a pistol shape as a whole. doing.
As shown in FIG. 2, a water flow path 10 extending from the connection port 2 to the water spray ports 5 a and 5 b is formed inside the nozzle body 6.
The nozzle body 6 is formed by connecting a hose nipple 8 and a water discharge head 9 to a bent water pipe 7 and assembling a plurality of covers covering the outer periphery. Also good.

The grip part 3 is formed in a substantially cylindrical shape extending upward from the base end part 3a, and can be gripped and handled by the user.
At the base end portion 3a of the grip portion 3, a connection port for introducing water from a water supply facility at the center thereof is provided on an uneven surface or an O-ring outer peripheral surface for connection with a receiver (not shown) attached to a hose. A hose nipple 8 having an opening 2 is attached below the water pipe 7.
The direction of the grip part 3 may be vertical, but may be inclined upward from the vertical direction and extended upward in a direction intersecting with the extending direction of the grip part 3 as shown in FIG. .

The nozzle portion 4 is formed in a substantially cylindrical shape that extends forward from the upper end of the grip portion 3. At the tip of the nozzle part 4, a water discharge head 9 is attached to the tip of the water flow pipe 7.
The water discharge head 9 includes a fixing member 11 connected to the water flow pipe 7 and a screwing member 12 attached to the tip of the fixing member 11 and forming a shower water spout 5a and a straight water spout 5b.
A switching port 11a for flowing water supplied from the water flow pipe 7 to the screwing member 12 side is formed on the peripheral surface of the fixing member 11, and the screwing member 12 moves forward and backward by screwing with respect to the fixing member 11. Attached to be able to. Thereby, the switching port 11a can be selectively communicated with the shower sprinkling port 5a or the straight sprinkling port 5b depending on the position of the screwing member 12 with respect to the fixing member 11, and the shower watering and the straight watering can be switched.

The watering nozzle 1 has an open / close valve that switches between water flow and water stop in the flow path of the water flow pipe 7.
The on-off valve has an on-off valve body 13 disposed in the flow path 10 on the grip part 3 side of the water flow pipe 7. As shown in FIG. 3, the on-off valve body 13 is formed in a covered cylindrical shape inscribed in the water flow pipe 7, and a protruding valve body portion 13 a is formed on the top of the lid.
As shown in FIGS. 2B and 3, the valve body portion 13 a is formed in a stepped shape that gradually decreases in diameter as it approaches the tip. In addition to forming the valve body portion 13a in a stepped shape in this way, the valve body portion 13a may be formed in a substantially conical shape whose diameter gradually decreases as it approaches the tip.
As shown in FIG. 2 (b), an O-ring 13b is attached to the valve body portion 13a to contact the on-off valve seat 7a and close the flow path 10.
O-rings 13c and 13c are provided at two locations on the outer peripheral surface of the on-off valve body 13 so that water does not flow on the outer periphery of the on-off valve body 13, and the O-rings 13c and 13c pass through the outer peripheral surface. The water port 13d is opened. The water supplied from the base end (downward) of the water flow pipe 7 passes through the inside of the on-off valve body 13 and flows out to the outer periphery from the water flow port 13d and flows downstream.

As shown in FIG. 2 (b), the valve body 13 a of the on-off valve body 13 is formed with a larger diameter than the on-off valve seat 7 a provided on the water flow pipe 7, and the hose nipple 8, the on-off valve body 13, The coil spring 14 interposed between them is biased toward the on-off valve seat 7a side to close the flow path 10 (water-stopped state).
When the valve body 13a is separated from the opening / closing valve seat 7a against this urging force, the flow path 10 is opened, and water can be sprayed from the water spray ports 5a and 5b.
Since the valve body portion 13a of the on-off valve body 13 is formed in a step shape, the on-off valve body 13 is separated from the on-off valve seat 7a as shown in FIGS. 9B and 11B. Accordingly, the flow rate of water passing through the on-off valve gradually increases.

  As shown in FIG. 2A, an operation lever 15 is attached in front of the grip portion 3 in order to operate the on-off valve body 13. This operation lever 15 is attached to the lower part of the grip part 3 with the lower end as a fixed end, and has an upper end as a free end, so that it can be rotated in the front-rear direction when the user holds it with a hand holding the grip part 3. It has become.

The water flow pipe 7 has an opening 7b on the front surface of the grip portion 3 side portion. A valve opening / closing arm 16 having an L-shaped longitudinal section contacts the operation lever 15 at one end, contacts the opening / closing valve body 13 through the opening 7b at the other end, and the water flow pipe 7 with the L-shaped bent portion as a fulcrum. Therefore, when the user grasps the water stop operation lever 15, the opening / closing valve seat 13a is opened via the valve opening / closing arm 16 against the urging force of the coil spring 14. It is possible to make the water-passing state by separating from the water.
Since the opening 7b of the water flow pipe 7 is always located between the two O-rings 13c and 13c of the on-off valve body 13, water does not leak from the opening 7b to the outside of the water flow pipe 7.

A lock mechanism is provided between the nozzle body 6 and the operation lever 15 for holding the open / close valve in a water state.
As shown in FIGS. 4 and 6, the locking mechanism includes a locking arm 17 attached to the water flow pipe 7 of the nozzle body 6 and a locking receiving member 19 attached to the operation lever 15.
As the material of the locking arm 17 and the locking receiving member 19, thermoplastic resins such as PP (polypropylene), POM (polyacetal), ABS (acrylonitrile butadiene styrene copolymer) can be used. Of these, POM, which is an engineering plastic, is particularly preferable because of its excellent wear resistance. Therefore, in the first embodiment, POM is used for the locking arm 17 and the locking receiving member 19.

As shown in FIG. 4, the locking arm 17 is formed in a substantially H shape in a plan view having a pair of left and right arm portions 17 a extending forward, and a small protrusion protruding inward at the tip of each arm portion 17 a. It has a pair of cylindrical locking pieces 18, 18. Each arm portion 17a is formed in a substantially triangular shape in side view to ensure strength.
In the present specification, the horizontal direction refers to the horizontal direction when the approaching / separating direction between the locking receiving member 19 attached to the operating lever 15 and the locking arm 17 attached to the nozzle body 6 is defined as the front-rear direction. It shall be said.

In the first embodiment, as shown in FIG. 5A, the tip of the locking piece 18 is formed in a flat shape, and the periphery of the tip is chamfered to a smooth R (curved surface).
In addition, the tip of the locking piece 18 may have a curved shape such as a spherical shape (FIG. 5B) or a substantially conical chamfered shape (FIG. 5C). The sliding path can be smoothly slid by forming in a shape.
In order for the locking piece 18 to slide smoothly on the sliding path, it is most preferable to form the locking piece 18 in a cylindrical shape as shown in FIG. Since it is difficult to manufacture the metal mold | die for shape | molding 18 by excavation, the necessity of the electrical discharge machining of a metal mold | die and the increase in the number of members arises, and a manufacturing cost will increase. Moreover, the corner | angular part of a front-end | tip periphery tends to be worn out or chipped, and there exists a possibility of causing trouble in the smooth sliding of the locking piece 18 by this.
Therefore, in the first embodiment, the chamfered columnar shape of FIG. 5A that is excellent in reduction of manufacturing cost and wear resistance is adopted.

As shown in FIG. 5A, the diameter W of the locking piece 18 is preferably set to 1 to 3 mm.
If W is less than 1 mm, the strength is insufficient, and the locking piece may be broken by sliding with the operation of the operation lever. If it is set larger than 3 mm, molding defects such as sink marks may occur when the locking piece is formed. is there. W is particularly preferably set to 1.5 mm or more, and particularly preferably set to 2.5 mm or less.
For these reasons, W is set to 1.8 mm in the first embodiment.

The ratio w / W between the diameter W of the locking piece and the diameter w of the flat portion excluding the peripheral R (curved surface) portion is preferably 0.20 to 0.95.
If w / W is set to less than 0.20, the locking piece may have a sharp shape and the wear resistance may be reduced. If it is set to be larger than 0.95, the R portion is too small and the locking piece is worn. There is a risk of causing chipping and hindering smooth sliding.
It is more preferable to set w / W to 0.50 or more, and it is particularly preferable to set w / W to 0.70 or more.
Further, w / W is more preferably set to 0.90 or less, and particularly preferably set to 0.85 or less.
For these reasons, w / W is set to 0.75 in the first embodiment.

The radius r of the R (curved surface) portion obtained by chamfering the peripheral edge at the tip of the locking piece 18 is preferably set to 0.1 to 0.4 mm.
If r is set to be less than 0.1 mm, the R portion is too small and the locking piece may be worn or chipped, which may hinder smooth sliding. If r is set to be larger than 0.4 mm, the locking piece 18 is set. However, there is a possibility that the nozzle body 6 and the operation lever 15 cannot be locked because it is easy to get over the step without being locked by the locking recess 22 described later. r is particularly preferably set to 0.15 mm or more, and particularly preferably set to 0.3 mm or less.
For these reasons, r is set to 0.2 mm in the first embodiment.

As shown in FIG. 4, a horizontal cylindrical spring support for contacting a leaf spring portion 7 c (see FIG. 2A) that protrudes forward from the water flow pipe 7 at the connecting portion of both arm portions 17 a. 17b is formed.
In addition, a pair of left and right attachment portions 17 c extending rearward is formed at the proximal end of the locking arm 17. Both attachment portions 17c have a wider interval than the arm portion 17a, and a rear end has a pair of left and right convex pieces 17d protruding inward.

  A pair of left and right concave portions (not shown) are formed on the side surface of the upper portion of the water flow pipe 7 on the grip portion 3 side. By fitting the convex pieces 17d of the locking arm 17 into the concave portions 7c, the locking arm 17 is moved. It is made to attach to the front side of the water flow pipe 7 so that rotation is possible (FIG. 2 (a)).

As shown in FIGS. 6 and 7, the latch receiving member 19 forms an elastic tongue piece 19b having a protruding portion 19a fitted to the inner surface of the operation lever at the upper end, and the inner surface of the operation lever at the lower end surface. A projecting portion 19a to be fitted on is projected.
In the center of the height of the locking receiving member 19, sliding paths 20 on which the locking pieces 18 of the locking arm 17 slide are formed on both the left and right side surfaces, respectively.
A heart-shaped heart cam portion 19c laid down from the side surface of the latch receiving member 19 is erected on the sliding path 20, and the latch piece 18 slides around the heart cam portion 19c. At the center of the heart cam portion 19c, a cam locking recess 21 that locks the locking piece 18 is provided rearward.
The cam locking recess 21 may be recessed in the vertical direction in addition to being recessed in the front-rear direction in the heart cam portion 19c (see FIG. 16B).

The sliding path 20 is also provided with a locking recess 22 that is recessed inward in the left-right direction in order to lock the locking piece 18. The locking recess 22 is a cam locking portion of the sliding path 20 in which the locking piece 18 circulates in order from the rear of the heart cam portion 19c to the upper side of the heart cam portion 19c, the cam locking recess 21 and the lower side of the heart cam portion 19c. The sliding path 20 is formed in front of the recess 21.
As shown in FIGS. 6A and 7B, the locking recess 22 is formed as a recess recessed inward in the left-right direction in the path of the sliding path 20, and the locking piece 18 is locked. A substantially vertical step is provided behind the flat portion to restrict the locked locking piece 18 from returning backward.
Further, as shown in FIG. 7B, a gentle inclined surface that widens from side to side from the rear to the front is formed behind the step, and when the user grasps the operation lever 15, the locking arm The 17 arm portions 17a are elastically deformed in the left-right direction so that the locking piece 18 is advanced forward along the slope.

The width (thickness) in the left-right direction of the portion where the locking recess 22 is provided in the locking receiving member 19 is set to be approximately equal to the distance between the pair of locking pieces 18, 18 of the locking arm 17.
Since the width of the sliding path 20 other than the locking recess 22 in the locking receiving member 19 is set to be larger than the distance between the locking pieces 18, the locking receiving member 19 is locked. By being sandwiched between the arms 17, reliable sliding and locking between the locking arm 17 and the locking receiving member 19 can be realized.

As shown in FIG. 5 (e), the depth d at which the locking piece 18 fits into the locking recess 22 is preferably set to 0.3 to 0.8 mm.
If d is set to be less than 0.3 mm, the locking piece 18 gets over the step and returns to the rear, so that the locked state cannot be maintained. If it is set to be larger than 0.8 mm, the sliding will occur as the operation lever 15 is operated. The amount of elastic deformation of the locking arm 17 when sliding along the moving path 20 increases, and the locking arm 17 may be damaged. It is particularly preferable to set d to 0.4 mm or more, and it is particularly preferable to set d to 0.6 mm or less.
For these reasons, d is set to 0.5 mm in the first embodiment.

  Further, as shown in FIG. 5 (f), the locking recess 22 may be formed with an inclined surface without providing a flat portion on the front side of the step, but the engagement of the locking piece 18 with respect to the depth D of the step. Since the amount of insertion d becomes small and may be detached from the locking recess 22, a flat portion is formed on the front side of the step as in the first embodiment shown in FIG. It is preferable to improve the certainty of locking (locking) by making the amount of insertion d equal to the depth D of the step.

Moreover, it is preferable to set the angle θ (FIG. 7B) of the inclined surface behind the step of the locking recess 22 to 10 to 60 degrees.
When the angle θ is set to be less than 10 degrees, it is necessary to lengthen the inclined surface in order to provide a step, and it is necessary to increase the size of the latch receiving member 19 and to increase the gripping amount of the operation lever 15. The operability of 15 deteriorates. On the other hand, when the angle θ is set to be larger than 60 degrees, the locking piece 18 gets over the inclined surface, so that the user needs to grip the operation lever 15 with a large force, and the operability is deteriorated. The angle θ is particularly preferably 30 degrees or more, and particularly preferably 50 degrees or less.
For these reasons, the angle θ is set to 45 degrees in the first embodiment.

As shown in FIGS. 6A, 6C, 6G, and 6I, an upper wall and a lower wall are provided on the upper and lower sides of the sliding path 20 to limit the movable range of the locking piece 18. The front and rear of the sliding path 20 are open. Since not only the rear side but also the front side of the sliding path 20 is opened, even when the operation lever 15 is excessively pushed by some impact, the locking piece 18 can be released forward to prevent damage.
As shown in FIGS. 6C, 6F, and 6I, a guide path 23a that is a slope inclined downward is formed at the rear end of the upper wall, and a slope that is inclined upward is formed at the rear end of the lower wall. A certain guiding path 23b is formed.
In addition, a guide path 23c is formed at the rear end of the cam portion 19c. The guide path 23c is an inclined surface that is inclined in the left-right direction and connected to the sliding path 20.
By forming the guide paths 23a, 23b, and 23c, the user can grasp the operation lever 15 even if the locking piece 18 is detached from the sliding path 20 of the locking receiving member 19 due to an impact such as dropping. For example, the locking piece 18 can be slid along the guiding paths 23 a, 23 b, and 23 c and returned to the sliding path 20.

When the water catching nozzle 1 is assembled by attaching the lock receiving member 19 to the operation lever 15, as shown in FIG. 1B, the lock pieces 18 and 18 sandwich the lock receiving member 19 in the water stop state of the on-off valve. It is located in the sliding path 20 behind the dent, heart cam portion 19 c and the locking recess 22.
According to the operation of the operation lever by the user, the locking piece 18 slides on the sliding path 20 as shown by line S in FIG.
When the user grasps the operating lever 15 and opens the on-off valve, the locking piece 18 slides forward on the sliding path 20 on the upper side of the heart cam portion 19c as the operating lever 15 approaches the nozzle body 6. Then, due to the elastic deformation of the locking arm 17, it climbs over the inclined surface and reaches the locking recess 22, and the locking arm 17 returns to its original shape (FIG. 8B).

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 tries to move away from the nozzle body 6. However, as shown in FIG. 8B, the locking piece 18 is locked by the step of the locking recess 22, thereby preventing the operation lever 15 and the nozzle body 6 from being separated from each other and allowing the on-off valve to flow. Hold in the state (locked state).
At this time, as shown in FIG. 9B, the gap between the valve body portion 13a of the on-off valve body 13 and the on-off valve seat 7a is small, and a relatively small amount of water passes through the flow path 10 (weak watering). State).

In this locked state, as shown in FIG. 5G, a clearance is preferably provided between the arm portion 17a of the locking arm 17 excluding the locking piece 18 and the locking receiving member 19. The minimum value Cl of this clearance is preferably 0.1 to 1.5 mm.
If Cl is less than 0.1 mm, the arm 17a may come into contact with the latch receiving member 19 and wear when the latch piece 18 slides. If the Cl is larger than 1.5 mm, the operation lever 15 moves in the left-right direction. Due to the increase in size, it is difficult for the user to operate with a finger. Cl is particularly preferably 0.5 mm or more, and particularly preferably 1.2 mm or less.
For these reasons, Cl is 0.9 mm in the first embodiment.

  When the user further grips the operating lever 15 from this locked state, the locking piece 18 moves from the locking recess 22 to the sliding path 20 on the upper side of the heart cam portion 19c as the operating lever 15 approaches the nozzle body 6. It slides forward and reaches the front of the heart cam portion 19c.

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 tries to move away from the nozzle body 6. However, as shown in FIG. 10 (b), the locking piece 18 slides along the heart cam portion 19c and is locked in the cam locking recess 21. And the on-off valve is kept in a water state (locked state).
At this time, as shown in FIG.11 (b), the clearance gap between the valve body part 13a of the on-off valve body 13 and the on-off valve seat 7a is large, and comparatively much water passes through the flow path 10 (strong water spray state). .

When the user grips the operation lever 15 again in this locked state, the locking piece 18 enters the sliding path 20 on the lower front side of the heart cam portion 19c as the operation lever 15 approaches the nozzle body 6. Next, when the user opens the operation lever 15, the on-off valve is returned to the water-stopped state by the coil spring 14, and the locking piece 18 moves along the sliding path 20 below the heart cam portion 19 c as the operation lever 15 is separated. Slide to return to the original position behind the heart cam portion 19c.
As shown in FIGS. 6 (e), (g), (i), and FIG. 7 (b), a step portion 19d is formed between the cam locking recess 21 and the lower sliding path 20 of the heart cam portion 19c. The locking piece 18 is formed and guided to the lower sliding path 20 of the heart cam portion 19c while being in contact with the stepped portion 19d, so that it does not go back to the cam locking recess 21.

As shown in FIG. 2A, a flow rate adjusting valve that rotates the rotary valve body 25 by rotating the flow rate operation member 24 is provided on the downstream side of the on-off valve in the watering nozzle.
In this flow regulating valve, the area where the notch formed in the cylindrical rotary valve body 25 and the flow path 10 on the nozzle part 4 side are increased or decreased to increase or decrease the lock in the weakly sprayed state or the strongly sprayed state. The amount of water spray can be finely adjusted in the state.

  In the watering nozzle 1 of the first embodiment, the locking recess 22 that is recessed inward in the left-right direction for locking the locking piece 18 is provided in the sliding path 20 of the locking receiving member 19. When the user grasps the operation lever 15 in the front-rear direction, the locking piece 18 is reliably locked in the locking recess 22 and can be reliably locked in a water-flowing state.

Further, the provision of the locking recess 22 provided inward in the left-right direction eliminates the need to slide the locking piece 18 in contact with the upper and lower peripheral walls of the sliding path 20 and the heart cam portion 19c. Compared with the case where the cam locking recess 21 that is recessed in the up-down direction or the front-rear direction is provided in the portion 19c, uneven wear of the locking piece 18 is less likely to occur, and the product life can be prolonged.
Moreover, since the latching recessed part 22 recessed in the left-right direction can be easily formed in the path | route of the sliding path 20 without providing the heart cam part 19c etc., manufacturing cost can be reduced.

  Further, a pair of locking pieces 18, 18 facing each other with a predetermined interval in the left-right direction are provided on the locking arm 17, and both left and right side surfaces of the locking receiving member 19 sandwiched between the pair of locking pieces 18 The sliding path 20 is formed in the sliding path 20, and a pair of locking recesses 22 and 22 are formed in the path of the sliding path 20 in the left-right direction. Since the member 19 can be held firmly, the locking piece 18 can be more reliably locked by the locking recess 22 in the locked state.

  Further, a locking recess 22 that is recessed in the left-right direction on the sliding path 20 of the locking receiving member 19 and a cam mechanism that is recessed in the vertical direction or the front-rear direction on a heart cam portion 19 c that is erected on the sliding path 20. By providing the stop recess 21, it is possible to select a water stop state, a weak water spray state, and a strong water spray state by simply repeating the operation of grasping the operation lever 15 and the operation of loosening the grip. In any case, the operation lever can be locked to maintain the water flow rate.

<Second embodiment>
The watering nozzle 1 of the first embodiment is provided with a pair of locking recesses 22 recessed in the left-right direction in the sliding path 20, but the watering nozzle 1 of the second embodiment has a plurality of pairs of the locking recesses. It is provided.
As shown in FIG. 12, in the watering nozzle 1, two pairs of locking recesses 26 and 27 that are recessed in the left-right direction are formed in the sliding path 20 of the locking receiving member 19 side by side. Both of the two pairs of locking recesses 26 and 27 are formed in the sliding path 20 on the upper side of the heart cam portion 19c, and the locking piece 18 passes through the sliding path 20 before the cam locking recess 21. ing.

When the watering nozzle 1 of the second embodiment is assembled, the locking pieces 18, 18 sandwich the locking receiving member 19 in the water stop state of the on-off valve, and slide behind the heart cam portion 19 c and the locking recesses 26, 27. It is arranged on the road 20.
According to the operation of the operation lever by the user, the locking piece 18 slides on the sliding path 20 as shown by line S2 in FIG.
When the user grasps the operating lever 15 and opens the on-off valve, the locking piece 18 slides forward on the sliding path 20 on the upper side of the heart cam portion 19c as the operating lever 15 approaches the nozzle body 6. Then, due to the elastic deformation of the locking arm 17, it climbs over the inclined surface and reaches the rear locking recess 26, and the locking arm 17 returns to its original shape (see FIG. 13B).

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 tries to move away from the nozzle body 6. However, since the locking piece 18 is locked by the step of the locking recess 26, the operation lever and the nozzle body 6 are prevented from being separated from each other, and the open / close valve is held in the water state (locked state).
At this time, the gap between the valve body portion 13a of the on-off valve body 13 and the on-off valve seat 7a is small, and a relatively small amount of water passes through the flow path 10 (weakly sprayed state).

  When the user further grips the operating lever 15 from this locked state, the locking piece 18 slides forward on the sliding path 20 from the locking recess as the operating lever 15 approaches the nozzle body 6, The elastic deformation of the locking arm 17 overcomes the inclined surface and reaches the front locking recess 27, and the locking arm 17 returns to its original shape (see FIG. 13B).

Here, when the user loosens the grip of the operation lever 15, the locking piece 18 is locked by the step of the locking recess 27, thereby preventing the operation lever 15 and the nozzle body 6 from being separated from each other, and Keep it in a water-permeable state (locked state).
At this time, an intermediate gap is provided between the valve body portion 13a of the on-off valve body 13 and the on-off valve seat 7a, and an intermediate amount of water passes through the flow path 10 (medium watering state).

  When the user further grips the operating lever 15 from this locked state, the locking piece 18 slides forward on the sliding path 20 from the locking recess as the operating lever 15 approaches the nozzle body 6, It reaches the front of the heart cam portion 19c.

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 tries to move away from the nozzle body 6. However, as a result, the locking piece 18 slides along the heart cam portion 19c and is locked by the cam locking recess 21 to prevent the operation lever 15 and the nozzle body 6 from being separated from each other. The water passage state is maintained (locked state) (see FIG. 13B).
At this time, a large gap is provided between the on-off valve body and the on-off valve seat, and a relatively large amount of water passes through the on-off valve (strong water spray state).

  When the user grips the operation lever 15 again in this locked state, the locking piece 18 enters the sliding path 20 on the lower front side of the heart cam portion 19c as the operation lever 15 approaches the nozzle body 6. Next, when the user opens the operation lever 15, the on-off valve is returned to the water-stopped state by the coil spring 14, and the locking piece 18 moves along the sliding path 20 below the heart cam portion 19 c as the operation lever 15 is separated. Slide to return to the original position behind the heart cam portion 19c.

In the watering nozzle 1 of the second embodiment, by providing two pairs of locking recesses 26 and 27 in the path of the sliding path 20, the operation of holding the operation lever 15 and the operation of loosening the grip are repeated repeatedly. A water state, a weak water spray state, and a medium water spray state can be selected, and the operation lever 15 can be locked and the water flow rate can be maintained in any of the weak water spray state and the medium water spray state.
The number of the locking recesses provided in the locking receiving member 19 is not limited to two pairs, and three or more pairs may be provided.

  Further, since two or more locking recesses 26 and 27 that are recessed in the left-right direction can be easily formed in the path of the sliding path 20, the heart cam portion 19c is recessed in the up-down direction or the front-rear direction. Compared with the case where two or more cam locking recesses 21 are formed (see FIGS. 15 and 16), the manufacturing cost can be reduced.

<Another aspect>
In the first embodiment and the second embodiment, the heart cam portion 19c is erected on the locking receiving member 19 and the cam locking recess 21 is provided on the heart cam portion 19c. Only one or more locking recesses 22 recessed in the left-right direction may be provided.
Further, it is not always necessary to provide the locking recesses 22 on both side surfaces of the locking receiving member 19, and one or more locking recesses 22 may be provided only on the sliding path 20 on either the left or right side.
Further, in the first embodiment and the second embodiment, the locking arm 17 is attached to the nozzle body 6 and the locking receiving member 19 is attached to the operation lever 15. The latch receiving member 19 may be attached to the nozzle body 6 by being attached to the operation lever 15.

DESCRIPTION OF SYMBOLS 1 Sprinkling nozzle 2 Connection port 3 Grip part 3a Base end part 4 Nozzle part 5a (Shower) Sprinkling port 5b (Straight) Sprinkling port 6 Nozzle body 7 Water flow pipe 7a Opening and closing valve seat 7b Opening 7c Plate spring part 13 Opening and closing valve body 13a Valve body portion 13b O-ring 13c O-ring 13d Water inlet 14 Coil spring 15 Operation lever 16 Valve opening / closing arm 17 Locking arm 17a Arm portion 17b Spring receiver 17c Mounting portion 17d Protruding piece 18 Locking piece 19 Locking receiving member 19a Projection Part 19b elastic tongue piece 19c heart cam part 19d step part 20 sliding path 21 cam locking recess 22 locking recess 26, 27 locking recess

Claims (4)

A nozzle body in which a flow path of water connecting from the inlet to the water spout is formed,
An operation lever attached to the nozzle body so as to be able to approach and separate in the front-rear direction;
A watering nozzle that is disposed in the flow path and interlocks with the operation lever, and has an open / close valve that opens and closes the flow path according to the positional relationship between the operation lever and the nozzle body,
A locking piece provided on one of the nozzle body and the operation lever;
Provided on the other, with the toward and away from the operating lever to form a slideway for sliding while the locking piece is elastically deformed in the lateral direction, the locking pieces in the path of the slideway A locking mechanism is provided that includes a locking receiving member that is recessed in the left-right direction to lock and hold the positional relationship between the operation lever and the nozzle body .
The water spray nozzle is characterized in that the locking piece is locked to the locking recess by abutting against a step portion between the locking recess and the other part of the sliding path . While providing two or more locking recesses in the path of the sliding path of the locking receiving member,
By selectively locking the locking piece to one of the locking recesses,
The watering nozzle according to claim 1, wherein the lock mechanism capable of holding the operation lever at two or more positions with respect to the nozzle body is provided. A pair of locking pieces facing each other with a predetermined interval in the left-right direction; and
The latch having the at least one pair of latch recesses formed in the left and right directions in the path of the slide path while being sandwiched between the pair of latch pieces and forming the slide paths on the left and right side surfaces, respectively. The watering nozzle according to claim 1, further comprising a receiving member. A cam in which a cam portion is erected on the locking receiving member, and the locking piece is locked to the cam portion in the path of the sliding path to maintain the positional relationship between the operation lever and the nozzle body The locking recess is recessed in the vertical direction or the front-rear direction,
By selectively locking the locking piece to the locking recess or the cam locking recess,
The watering nozzle according to any one of claims 1 to 3, wherein the lock mechanism capable of holding the operation lever at two or more positions with respect to the nozzle body is provided.

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