JP2005138056A - Nozzle for water spray - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a nozzle for water spray capable of easily performing the operation of not only switching between water spray and dead water but also locking and lock releasing a water spray condition as the need arises by repeating the same operation one-handed due to the repetition of a tight grip and a loose grip on an operation member represented by a lever or the like. <P>SOLUTION: The nozzle for water spray is provided with an on-off-valve switching between water spray and dead water; and the operation member providing a body holding part with at least one end thereof so as to enable becoming close and apart, opening and closing the on-off-valve by close and apart action to the body holding part to switch between water spray and dead water, and also having operational options of the lock and the lock release of water spray for maintaining a valve opening condition of the on-off-valve by the close and apart action. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a nozzle for watering that incorporates an on-off valve that controls water stoppage in conjunction with the movement of an operation lever.

  Conventionally, a watering nozzle that is attached to the tip of a hose and can arbitrarily perform watering and water stopping has been widely used. The watering nozzle includes, for example, a watering device described in Japanese Utility Model Publication No. Hei 4-96557, a watering nozzle described in Japanese Patent Application Laid-Open No. 9-99257, and a watering device described in Japanese Patent Application Laid-Open No. 9-122538. There were some equipped with various water stoppage control mechanisms and lock mechanisms.

In a watering device such as that described in Japanese Utility Model Publication No. 4-96557, a grip portion is swingably attached, and a valve that opens and closes a shower discharge port is operated in conjunction with the movement of the water spray device. A locking mechanism is provided at a position so that the swinging operation of the grip portion and the locking / unlocking operation of the locking mechanism can be independently performed by fingers of the gripped hand.
In the watering nozzle as described in Japanese Patent Laid-Open No. 9-99257, the gripping lever that can be swung around one end of the gripping portion on the water outlet side of the gripping portion and the inner surface of the gripping lever is adjusted to the inner surface side A water flow lever that opens and closes the valve and a lock mechanism that locks the water flow through the adjustment valve by locking it to the free end of the grip lever. Then, the sprinkling state can be locked by locking the locking end of the lock mechanism to the free end of the gripping lever while the hand is still tightened.

  In a sprinkler as described in JP-A-9-122538, a connection lever that is connected to a spindle that opens and closes a water passage hole and moves the position of the spindle according to the operation of the operation lever, and a hung from the main body of the sprinkler. A locking member that locks the movement of the operating lever by engaging with a hanging member having a plurality of claws for setting the watering pattern, and presses one end of the connecting lever to make the water passage through the water passage and to the hanging member A lock release lever that includes an operation lever that locks the distal end portion of the lock member and a case body that is integrally formed, and that releases the locked state by pressing the non-locking side end portion of the lock member inside the case body. Incorporating water, watering is performed by operating the operation lever, the watering state is locked so that watering can be continued, and watering is performed by operating the lock release lever. The lock is released so that the water can be stopped.

Japanese Utility Model Publication 4-96557 JP-A-9-99257 JP 9-122538 A

〔problem〕
In these conventional technologies, both a mechanism for switching from water stop to water spray and a mechanism for locking the water spray state to lock the water continuously are provided. In order to perform locking and locking operations, it is necessary to perform each operation with both hands, or even with one hand operation, each finger must be used separately and watering and water stoppage etc. The inconvenience of the operation resulting from the difference in operation method between the operation and the lock / unlock operation cannot be eliminated, and the operation is not easy.

  The present invention is for solving the above-mentioned problems in the prior art, and the technical problem set for this purpose is to repeat sprinkling or tightening of an operation member represented by a lever or the like. An object of the present invention is to provide a watering nozzle that can be easily operated not only by switching the water stop but also by locking the watering state and releasing the lock as needed by simply repeating the same operation with one hand.

  A first problem-solving means that is specifically configured to achieve the above-mentioned problem with respect to the nozzle for watering is provided with an on-off valve that switches water spray stop and at least one end of the main body gripping part so as to be close to and away from the main body gripping part. The close / separate operation opens and closes the open / close valve to switch the water spray stop, and the close / separate operation allows the water spray lock to maintain the open state of the open / close valve and the release of the locked state to be selectively operated. And an operating member formed in the above.

  A second problem-solving means as described above includes a water flow operation mechanism interlocked with the on-off valve and a lock mechanism for maintaining the valve open state of the on-off valve between the main body gripping portion and the operation member. It is characterized by being arranged.

  In the third problem solving means, the operation member is formed as an operation lever having an upper end portion rotatably attached to the upper end portion of the main body gripping portion, and the water flow operation mechanism is formed on the inner surface of the central portion of the operation lever. The lock mechanism is disposed between the inner side of the lower end of the operation lever and the main body gripping portion between the side and the central portion of the main body gripping portion.

  The fourth problem-solving means is the same as that described above, wherein the water flow operation mechanism opens the valve against the closing-side biasing force of the valve opening / closing mechanism incorporated in the main body gripping part by pressing the operation lever in one direction. An opening / closing valve operating member that applies an operating force to the side is incorporated, and by releasing the pressing operation of the operating lever, the closing side biasing force of the valve opening / closing mechanism is recovered and the biasing force acts on the valve closing side. The opening / closing valve operating member is assembled to the above.

  The fifth problem solving means is characterized in that the lock mechanism is configured with an alternate conversion type lock mechanism in which a lock state and an unlock state are alternately switched by a pressing operation in one direction of the operation lever. To do.

With this configuration, the present invention has the following effects. That is,
In the first problem-solving means relating to the nozzle for watering, watering and water stopping can be switched by the approaching and separating operation of the operation member by grasping the operation member with one hand and performing a hand-tightening operation. Can be selectively locked and unlocked, and the operability of the watering nozzle operated with one hand is improved and the usability is improved.

  In the second problem solving means, the water flow operation mechanism and the lock mechanism provided between the main body gripping part and the operation member switch the water spray stoppage by the on-off valve in conjunction with the movement of the operation member. Since the locked state that maintains the state can be released and the locked state can be released, it is possible to easily select the watering state, the water stopping state, the locking state, and the unlocking state according to the gripping state of one hand. Therefore, the operability of the watering nozzle is improved and the usability is improved.

  In the third problem solving means, the operation member is formed as an operation lever that is pivotably assembled with the upper end portion of the operation member on the upper end portion of the main body gripping portion and swings about the upper end portion of the operation member as a fulcrum. By providing a water flow operation mechanism between the center side of the operation lever and the lock mechanism between the main body gripping part and the inner surface of the lower end of the operation lever, Depending on the number of times it is gripped with force, it is possible to select water sprinkling, locking and unlocking, etc., and the water spray nozzle body gripping part can be formed into a pistol grip shape that is easy to use and easy to use .

  In the fourth problem solving means, the on-off valve operating member incorporated in the water flow operating mechanism is resisted against the closing-side biasing force of the valve on-off mechanism incorporated in the main body gripping part by pressing the operation lever in one direction. By applying the operating force to the valve opening side or releasing the operation lever pressing operation, the closing side urging force of the valve opening / closing mechanism can be recovered, and the opening / closing valve can be operated easily. Improves.

  In the fifth problem solving means, the lock mechanism is formed as an alternate conversion lock mechanism, so that only the operation lever is pressed in one direction by a gripping operation that grips the main body gripping portion and the operation lever with an appropriate strength. Thus, it is possible to easily switch between the locked state and the unlocked state, and it becomes possible to easily perform the two operations of locking the watering by one-handed operation and releasing it, thereby improving the operability.

In the following embodiments of the present invention, a description will be given of a case where an alternating conversion lock mechanism is configured as the lock mechanism.
This embodiment is specifically described for better understanding of the gist of the invention, and does not limit the description of the claims unless otherwise specified.

[First Embodiment]
〔Constitution〕
As shown in the assembly drawings of FIGS. 1 to 6, the watering nozzle 1 includes a discharge-side main body 2 that performs water spraying in the form of a rod, cone, mist, etc. and shower watering from the hose side, A main body gripping part 3 serving as a receiving part for water supplied from the hose side, and a member capable of selectively operating sprinkling and water stopping by gripping the main body gripping part 3 by hand and performing a clamping operation. The operation lever 4 is attached to the main body gripping portion 3 so as to be rotatable about the upper end portion as a fulcrum, and the lower end portion is attached to the main body gripping portion side so as to be able to approach and separate.
The overall shape of the watering nozzle 1 is such that a watering port 5 having a large number of small holes formed at the distal end portion of the discharge side main body 2 is formed, and a hose for supplying water to the base end portion of the main body gripping portion 3 ( (Not shown) is formed, and the discharge-side main body 2 and the main body gripping portion 3 form a substantially letter shape. When the main body gripping portion 3 is gripped with the operation lever 4 attached thereto, A gripping portion having a shape similar to the shape formed on the palm side, a so-called pistol grip is formed.

The main body gripping portion 3 is provided with an opening / closing valve 7 in the middle of a water passage leading from the connection port 6 to the water spray port 5, and the upper end portion of the connection port 6 for connecting a hose to the lower end portion of the opening / closing valve 7 is screwed. Thus, a water passage on the grip portion side is formed.
The on-off valve 7 accommodates the valve body 7a coaxially with the substantially cylindrical valve body housing portion 7b and is slidable in the axial direction, and elastically biases the valve body 7a toward the valve seat 7c. The coil spring 7d for energizing the valve body is interposed in the gap between the outer peripheral side of the body of the valve body 7a and the inner surface of the body of the valve body housing 7b.
A valve opening / closing mechanism 8 and a lock mechanism 9 are provided as an operating mechanism for the opening / closing valve 7. The valve opening / closing mechanism 8 is provided with a valve opening / closing arm 8 a for connecting the operation lever 4 and the opening / closing valve 7. The valve body 7a can be moved in the axial direction according to the movement, and the lock mechanism 9 is provided with a valve body rotating arm 9a for connecting the operation lever 4 and the on-off valve 7 so that the operation lever 4 According to the movement, the valve body 7a is rotated around the axis so that an operation for suppressing the movement of the valve body 7a in the axial direction can be performed.
Further, a coil spring for biasing the operating lever as an elastic member that applies a biasing force in the direction of separating the operating lever 4 from the on-off valve 7 between the operating lever 4 and the on-off valve 7 at the lower end of the operating lever 4. 10 is inserted.

As shown in FIG. 7, the operation lever 4 is formed in a U-shaped cross section, and a pressing member 4a is provided on the inner side of the central portion so as to abut against the valve opening / closing arm 8a of the valve opening / closing mechanism 8 and press the valve side. The upper end portion is provided with holes 4b and 4b for inserting the rotation shaft, and the valve body rotating arm 9a having a rectangular cross section projects from the inner surface of the lower end portion toward the valve side. The distal end of the valve body rotating arm 9a is formed in a claw shape protruding to the side surface, the end surface forms a surface perpendicular to the longitudinal direction, and the inner (center side) side surface is 45 degrees from the side edge of the tip. An inclined surface reaching the side surface at an inclination angle is formed.
Inside the lower end of the operation lever 4 is formed a flat portion 4c that serves as a seat for the one end of the operation lever biasing coil spring 10 to come into contact with, and the lower end surface has a size that allows the valve body housing portion 7b to be inserted. A bottom plate 4d that is cut into a semicircular shape is provided so that an opening can be formed.
For this reason, when the operation lever 4 moves in the direction approaching the main body gripping portion 3, the pressing member 4a contacts the upper end of the valve opening / closing arm 8a to press the valve body 7a in the opening direction, and the valve body. The tip of the rotating arm 9a abuts on one tooth provided on the ratchet gear 18 of the valve body 7a, and presses the valve body 7a in the direction of rotating around the axis.

  As shown in FIGS. 8 and 9, the valve body 7a for opening and closing the flow path is formed in a hollow cylindrical member having an open lower end, and the upper end portion 11 has a number of rectangular grooves 11a parallel to the axial center at equal circumferential intervals. A reamer-type substantially cylindrical member formed with many thick ribs 11b (six in the figure) formed with engraved (six in the figure) and having a wide outer peripheral part is projected as a valve body positioning member, and this upper end A first O-ring groove 12 is formed on the upstream outer peripheral surface immediately adjacent to the portion where the valve body positioning member of the portion 11 is formed, and the inner peripheral surface of the hollow cylindrical member is formed on the upstream side closest to the O-ring groove cutting position. , 13 extending in a radial direction from the outer peripheral surface to the outer peripheral surface are opened as water outlets on the side opening 14 in which a large number (four in the figure) are provided at regular intervals on the periphery. A second O-ring groove 15 is formed on the upstream side, and the upstream side nearest to the position where the second O-ring groove 15 is formed. A large number (12 in the figure) of shallow grooves 16 having a substantially semicircular cross section parallel to the axial direction of the valve body 7a are formed at equal intervals on the circumference, and the groove 16 is shifted from the engraved position to the upstream side. The ring-shaped projecting member 17 having a rectangular cross section is provided on the outer peripheral side as an abutting portion where the end of the valve opening / closing arm 8a contacts and presses on the outer peripheral side. On the upstream side, a ratchet gear 18 having a saw-toothed cross section is formed (the number of teeth in the figure is 12), and the tip of the valve body rotating arm 9a is engaged with the ratchet gear 18 as a ratchet claw. A valve body rotation ratchet is formed. On the upstream side closest to the position where the ratchet gear 18 is formed, a locking projecting member 19 having a rectangular cross-section serving as a seat for the valve spring 7d for energizing the valve body is applied to the valve body 7a. Further, the downstream side diameter of the side opening 14 is formed smaller than the upstream side diameter so as to secure a necessary flow area when the valve is opened so that the flow resistance does not become unnecessarily large. It is formed in the shape. O-rings 33 and 34 are fitted into the respective O-ring grooves 12 and 15 according to the size of the grooves (FIGS. 2 and 5).

As shown in FIGS. 10 to 12, the valve body accommodating portion 7 b is a member in which both ends are opened and a hollow cylinder that is reduced in a multistage manner in which the diameter gradually decreases from the lower end portion toward the upper end portion. In order to make the thickness of the member substantially uniform, the inner diameter side is also reduced (expanded) in accordance with the reduced (expanded) portion of the outer diameter.
On the outer surface side of the valve body accommodating portion 7b, the tip of the valve body rotating arm 9a penetrates through the central cylindrical portion having the second largest diameter next to the lower end portion, and can be engaged with a ratchet gear 18 provided on the valve body 7a. For this purpose, an opening 23 is formed at a position corresponding to the position of the ratchet gear 18 when the valve body is fitted. In front of the opening 23, two valve opening / closing arm pivot brackets 25, 25 for pivotally supporting the valve opening / closing arm 8 a at the downstream end of the same cylindrical portion are arranged in front. The end of the valve opening / closing arm 8a on the valve element contact side abuts against the ring-shaped protruding member 17 between the two valve opening / closing arm pivot support brackets 25, 25. The opening 26 for penetrating the valve body accommodating part 7b is drilled so that it can do. At the upstream end of the same cylindrical portion, a cylindrical projection 27 is provided that serves as a seat for the operating lever biasing coil spring 10 that projects in the same direction as the projecting side of the valve opening / closing arm shaft support brackets 25, 25. To do. Further, on the outer peripheral side of the position where the valve seat 7c is formed, a flange 28 protruding in a ring shape serving as a stopper in the axial direction when fitted into a pipe 3a serving as a water passage provided in the main body gripping portion 3. The rotation stop rib 29 which contacts the flange 28 is provided on the downstream side.

  On the inner surface side of the valve body accommodating portion 7b, a female screw portion 21 is formed at the lower end portion (upstream end portion) to which the male screw portion of the connection port 6 of the hose is screwed, and the upper end portion (downstream end portion). Has a rectangular cross-section position restricting rib 7e that functions as a stopper for restricting the movement of the valve body 7a in the axially downstream side, and protrudes toward the center side. The reduced diameter portion 22 is formed. In addition, at the position corresponding to the position of the groove 16 when the valve body is fitted, a slit formed in a horizontally long U-shape is cut to form an elongated plate-like member whose one end is integrated with the wall surface. Then, a projection that protrudes inwardly and is formed so as to be able to engage with the groove 16 is provided at the front end portion of the plate material, and is locked to the shallow groove 16 so as to be able to bend in a direction perpendicular to the valve shaft. In this case, a click feeling is given to the rotation of the valve body 7a, and when the later-described valve body rotation arm 9a returns, both inclined surfaces of the valve body rotation arm 9a and the ratchet gear 18 come into contact with each other to disengage both. A locking member 7f having a function of preventing rotation against weak rotational force such as rotational force in the reverse direction acting during the above is formed.

The valve seat 7c is formed by forming the upstream end surface of the reduced diameter portion 22 formed on the inner surface of the downstream end portion of the valve body housing portion 7b on a surface perpendicular to the central axis of the valve body housing portion 7b. This is used as a valve seat, and the diameter-reduced portion 22 having one end face as a valve seat 7c passes through a reamer-type substantially cylindrical member provided at the upper end portion 11 of the valve body 7a, and the base of this member The O-ring 33 fitted in the first O-ring groove 12 engraved in is brought into contact with the valve seat 7c to seal the flow path.
On the downstream side of the reduced diameter portion 22, a plate-like position regulating rib 7 e is provided projecting from the inner surface toward the center side at the downstream end of the valve body housing portion 7 b.
This position restricting rib 7e is detachably combined with a groove carved in a reamer-type substantially cylindrical member formed in the upper end portion 11 of the valve body 7a, and an O-ring 33 provided on the valve body 7a. Is separated from the valve seat 7c, the position restricting rib 7e comes out of the rectangular groove 11a of the upper end portion 11, the valve body 7a rotates 1/12, and a thick rib 11b formed in a substantially cylindrical member is formed. When the position restricting rib 7e formed in the valve element accommodating portion 7b is turned around, the valve element 7a is moved downstream in the axial direction by the urging force of the valve urging coil spring 7d, and the position restricting rib 7e The thick rib 11b functions as a valve body positioning member that restricts the position of the valve body 7a so that it cannot move to the downstream side by contacting the end surfaces facing each other.
A flange 28 is provided on the outer peripheral side of the reduced diameter portion forming position of the valve body housing portion 7b, and the flange 28 has a length that reaches a substantially intermediate position from the flange 28 to the distal end portion on the downstream side. A plate-shaped anti-rotation rib 29 is projected outward in the radial direction.

The coil spring 7d for energizing the valve body is formed by the spring holding member 7g fixed in position by the attachment of the upstream end face of the locking projecting member 19 projecting from the outer peripheral side of the central part of the valve body 7a and the connection port 6. The valve body 7a is externally fitted between the downstream end face.
As shown in FIG. 13, the spring pressing member 7g is an annular member that forms a spring seat inserted on the inner surface side of the downstream end portion of the valve body housing portion 7b, and is in contact with the valve body biasing coil spring 7d. The end 31 on the opposite side is reduced in diameter, and the threaded portion side end of the connection port 6 is screwed into the valve body accommodating portion 7b, so that the end 31 is connected to the downstream end of the valve body accommodating portion 7b. It is molded so that it is fitted and fixed in position. The downstream end surface 32 of the spring pressing member 7g forms a surface perpendicular to the central axis of the valve body 7a as a contact surface of the valve body urging coil spring 7d.
The connection port 6 is formed with an end portion on the hose connection side as a nipple portion of the one-touch type hose connection device, and a male screw portion that is screwed into the female screw portion 21 of the valve body housing portion 7b is formed at the opposite end portion. And the flange of the shape matched with the lower end part of the main body holding part 3 is provided in the base part of the external thread part, and it forms so that the role of the bottom plate of the main body holding part 3 may be played.

As shown in FIGS. 1, 2, and 4 and 5, the valve opening / closing mechanism 8 has a valve opening / closing arm 8a (see FIG. 1) in which a pressing member 4a protruding from the central portion on the inner surface side of the operation lever 4 abuts one end. 14), and valve opening / closing arm pivot support brackets 25, 25 (see FIGS. 10 to 12) that project from the central portion of the valve body housing portion 7b to pivotally support the central portion of the valve opening / closing arm 8a. ) And a ring-shaped projecting member 17 (see FIGS. 8 and 9) of the valve body 7a that contacts the end of the valve opening / closing arm 8a opposite to the pressing member contact side.
As shown in FIG. 14, the valve opening / closing arm 8a is a member having an L-shaped side surface, and protrudes columns 8b and 8b outward from the end faces on both sides at the intersection, and the columns 8b and 8b respectively Each valve opening / closing arm shaft support bracket 25 is formed so as to be supported on the shaft. The long side of the L-shaped member is used as a portion that comes into contact with the pressing member 4 a of the operation lever 4. The short side of the L-shaped member protrudes from both side ends of the member, passes through the opening 26 of the valve body housing portion 7b and sandwiches the valve body 7a from both sides, and at the tip of the ring of the valve body 7a The two hook-shaped members 8d and 8d are formed so as to project the projecting portions that come into contact with the projecting projecting member 17.

[Function and effect]
In the first embodiment configured as described above, the main body gripping portion 3 and the operation lever 4 are squeezed in the water-stopped state shown in FIGS. 1 to 3, and the operation lever 4 is moved closer to the on-off valve 7 by increasing the gripping force. As a result, the valve opening / closing arm 8a of the valve opening / closing mechanism 8 is rotated around the axis of the cylinders 8b, 8b by the pressing member 4a of the operating lever 4, and the ring-shaped protruding member 17 is opened by the flange members 8d, 8d. And the tip of the arm 9a for rotating the valve body of the lock mechanism 9 approaches the vertical surface side of one tooth of the ratchet gear 18 provided around the valve body 7a of the on-off valve 7. Until the tip of the rotating arm 9a comes into contact with the vertical surface of the tooth shape of the ratchet gear 18, the water sprayed state (hereinafter referred to as the water flow initial state) in the case of not locking as shown in FIGS.
In this case, the position restricting rib 7e comes out of the rectangular groove 11a of the upper end portion 11 by the movement of the valve body 7a to the valve opening side, so that the valve body 7a is rotatable around the axis.
Further, until the valve body rotating arm 9a contacts the vertical surface of the tooth shape of the ratchet gear 18, the valve body 7a is rotated only by moving in the axial direction against the urging force of the valve body urging coil spring 7d. When the gripping force is loosened, the operating lever 4 is moved away from the on-off valve 7 by the biasing forces of the operating lever biasing coil spring 10 and the valve body biasing coil spring 7d and returned to the water stop position. .

After initializing the water flow, when the gripping strength is increased and the operation lever 4 is further moved in the direction approaching the on-off valve 7, the tip of the valve body rotating arm 9a is brought to the vertical surface of the tooth shape of the ratchet gear 18. The tip of the valve body rotating arm 9a moves in accordance with the amount of movement of the operation lever 4, presses one tooth of the ratchet gear 18, and the ratchet gear according to the amount of movement of the valve body rotating arm 9a. The valve body 7a is rotated at a rotation angle of 18 (FIGS. 15 and 16).
When the valve body 7a rotates, the protrusion of the locking member 7f falling into the shallow groove 16 is locked until the protrusion of the locking member 7f comes out to an intermediate position between the groove 16 and the groove 16 by the pressing force generated by the valve body rotation. The member 7f is bent (FIG. 16B), and the upper end 11 is rotated from the engraved position of the rectangular groove 11a to the formation position of the thick rib 11b at the position where the position restricting rib 7e is disposed (FIG. 16 ( A)).
After that, when the operating lever 4 is further moved in the direction approaching the on-off valve 7 and is pushed by the tip of the valve body rotating arm 9a to rotate the valve body 7a, the tip of the valve body rotating arm 9a is moved to the ratchet gear 18. When the rotation is made so that it deviates from the vertical surface of the tooth profile (FIG. 17C), the protrusion of the locking member 7f that has come out at the intermediate position between the groove 16 and the groove 16 falls into the groove 16 on the rear side in the rotation direction (FIG. 17 (B)), the thick rib 11b of the upper end 11 rotates to the position immediately below (the position immediately before the upstream side) at the position where the position restricting rib 7e is disposed (FIG. 17A).

Even if the clamping force is weakened from this state and the valve body 7a moves to the downstream side in the axial direction, the thick rib 11b of the upper end portion 11 comes into contact with the position restricting rib 7e, and the movement is restricted. 7a will maintain a valve open state, and will be in the locked state of watering (FIG. 18).
Further, when the operating lever 4 is moved away from the on-off valve 7 by the biasing force of the operating lever biasing coil spring 10 and the valve body biasing coil spring 7d, the gripping force is reduced. The slope portion formed at the tip of the arm 9a abuts on the slope side of the tooth positioned on the rear side in the rotation direction of the ratchet gear 18 to form the tip portion of the valve body rotating arm 9a and the tooth profile of the ratchet gear 18. When the two inclined surfaces move while being displaced, a component force in a direction perpendicular to the valve shaft acts to bend the tip of the valve body rotating arm 9a away from the valve body 7a (FIG. 19C). When the operating lever 4 further moves away from the on-off valve 7, the tip of the valve body rotating arm 9a moves toward the protruding end of the tooth shape of the ratchet gear 18 (FIG. 20C), and the protruding end of the tooth. Overcoming Tip of the valve body rotating arm 9a is disengaged from the teeth engaging in the ratchet wheel 18, back to the original position according to the movement of the operation lever 4 (Figure 21, 22).
At this time, the valve body 7a is prevented from moving by the position restricting rib 7e at the axial position (FIG. 22A), and the protrusion of the locking member 7f is engaged with the groove 16 at the rotational position. The rotation is stopped (FIG. 22B), the valve open state remains locked, and watering is continuously performed.

  In order to release the locked state of watering shown in FIGS. 21 and 22, the gripping force for tightening the main body gripping part 3 and the operation lever 4 is increased again, and the operation lever 4 is moved in a direction approaching the on-off valve 7. Then, the valve opening / closing arm 8a is rotated around the axis of the cylinders 8b, 8b by the pressing member 4a, and the flange-shaped members 8d, 8d press the ring-shaped protruding member 17 in the valve opening direction and the valve body of the lock mechanism 9 The rotating arm 9a approaches until the tip of the rotating arm 9a comes into contact with the vertical surface side of one tooth of the ratchet gear 18. Then, the contact of the position regulating rib 7e and the end face of the thick rib 11b is released by the movement of the valve body 7a to the valve opening side, and the valve bodies 7a are separated from each other so that the valve body 7a can be rotated around the axis. To do. When the gripping force is further increased and the operating lever 4 is moved in a direction approaching the on-off valve 7, the tip of the valve body rotating arm 9a abuts against the vertical surface of the tooth shape of the ratchet gear 18 to rotate the valve body 7a. The protrusion of the locking member 7f that is bent into the shallow groove 16 is bent to the middle position between the groove 16 and the valve body 7a is thick at the position where the position restricting rib 7e is disposed. The rib 11b is rotated from the position where the rib 11b is formed to the engraved position of the rectangular groove 11a so that the valve element 7a can move in the axial direction.

Further, the operation lever 4 is moved in a direction approaching the on-off valve 7 and is pushed by the distal end of the valve body rotating arm 9a so that the distal end of the valve body rotating arm 9a is disengaged from the vertical surface side of the teeth of the ratchet gear 18. When the valve body 7a rotates, the protrusion of the locking member 7f that has come out at the intermediate position between the groove 16 and the groove 16 falls into the groove 16 on the rear side in the rotation direction and engages, and at the position where the position restricting rib 7e is disposed. The engraved position of the rectangular groove 11a in the upper end portion 11 rotates to the position just below (the position just before the upstream side).
Thereafter, when the gripping force is loosened and the operating lever 4 is moved away from the on-off valve 7, the operating lever 4 is moved by the biasing forces of the operating lever biasing coil spring 10 and the valve body biasing coil spring 7d. The valve is moved away from the on-off valve 7 and returned to the original position, the valve body 7a moves in the axial direction, the position regulating rib 7e is inserted into the rectangular groove 11a of the upper end portion 11, and the O-ring 33 comes into contact with the valve seat 7c. It moves in the axial direction and the valve is closed.

  As described above, in the first embodiment, it is possible to arbitrarily and easily change the water spray state, the water spray lock state, and the water stop state by simply tightening the main body grip portion 3 and the operation lever 4 and strengthening or weakening the grip force. It can be selected and changed, and the operability of the watering nozzle can be improved and the one-handed operation can be easily performed and the usability can be improved.

[Second Embodiment]
Below, the case where a lock mechanism is comprised with the cam mechanism which has a substantially heart-shaped guide groove is demonstrated.
〔Constitution〕
As shown in the assembly drawings showing the respective cross sections of FIGS. 23 to 30, the sprinkling nozzle 61 has a sprinkling port 65 in which a large number of small holes are formed at the tip of the discharge side main body 62. The main body gripping part 63 is formed with a connection port 66 for connecting a hose (not shown) for supplying water to the base end part, and the discharge side main body 62 and the main body gripping part 63 are formed in a substantially letter shape. The main body gripping portion 63 forms a gripping portion having a shape similar to the shape formed on the palm side when gripped with the attached operation lever 64, that is, a so-called pistol grip.

The main body gripping portion 63 is provided with an on-off valve 67 (see FIGS. 26 to 28) in the middle of the water passage leading from the connection port 66 to the sprinkling port 65, and a connection for connecting a hose to the lower end of the on-off valve 67. The upper end portion of the mouth 66 is screwed to form a water passage on the grip portion side.
The on-off valve 67 accommodates the valve element 67a coaxially with the substantially cylindrical valve element accommodating portion 67b and is slidable in the axial direction. The valve element 67a is spring-loaded toward the valve seat 67c (see FIG. 25). A valve spring urging coil spring 67d, which is an elastic member to be urged, is interposed in the gap between the outer periphery of the body of the valve body 67a and the inner surface of the body of the valve body housing 67b.
A valve opening / closing mechanism 68 as an operation mechanism for the opening / closing valve 67 is provided at a substantially central portion of the valve body housing portion 67b, and a lock mechanism 69 for fixing the valve opening / closing mechanism 68 by stopping the movement of the operation lever 64 is provided on the operation lever 64. A locking piece mounting bracket 67e is provided on the lower end portion of the valve body housing portion 67b to support the locking piece 69a of the locking mechanism 69, and is locked by the locking piece mounting bracket 67e. It supports so that the piece 69a can bend in the longitudinal direction of the valve body accommodating part 67b.

  As shown in FIG. 31, the valve element 67a for opening and closing the flow path is formed in a hollow cylindrical member having an open lower end, the upper end portion is formed in a truncated cone shape, and the portion closest to the place where the truncated cone shaped upper end portion 71 is formed. A first O-ring groove 72 is formed on the upstream outer peripheral surface, and ribs 73,..., 73 extending radially from the inner peripheral surface to the outer peripheral surface of the hollow cylindrical member on the upstream side closest to the O-ring groove cutting position. Are provided with a plurality of (four in the figure) standing side openings 74 at equal intervals on the circumference, and a second O-ring groove 75 is formed on the upstream side immediately adjacent to the side opening 74 to form a hollow cylindrical member. A ring-shaped projecting member 76 having a rectangular cross section is projected on the outer peripheral side of the central portion of about 1/3 from the upper end of the upper end of the valve as a locking projecting portion of the valve spring urging coil spring 67d. The diameter is made smaller than the diameter on the upstream side to secure the required flow area when the valve is open and flow resistance Formed into a shape so as not to unnecessarily increase.

As shown in FIGS. 32 to 34, the valve body accommodating portion 67b is a member formed with a hollow cylinder that is open at both ends and is reduced in multiple stages with the outer diameter gradually decreasing from the lower end portion toward the upper end portion. In order to make the thickness of the member substantially uniform, the inner diameter side is also reduced (expanded) in accordance with the reduced (expanded) portion of the outer diameter.
On the inner surface side of the valve body housing portion 67b, a female screw portion 81 for screwing the male screw portion of the connection port 66 of the hose is formed at the lower end portion, and a reduced diameter portion that becomes the valve seat 67c is formed at the upper end portion.
On the outer surface side of the valve body accommodating portion 67b, an opening 83 for preventing the locking mechanism interference is formed at the center portion of the cylindrical portion having the largest diameter at a position corresponding to the proximity position of the locking body. A pair of members separated into two upper and lower portions are protruded as a pair of locking piece position restricting members 67g and 67h of the locking mechanism on both side circumferential surfaces at substantially the same position in the axial direction as the opening 83, and the axial position Two brackets 67e, 67e for supporting the locking pieces protrude from the rear side where the two are substantially the same, and a locking member 67f that presses the upper side of the locking piece protrudes at the center between the brackets.
The valve opening / closing arm pivot brackets 85 and 85 for pivotally supporting the valve opening / closing arm 68a protrude from the downstream end of the same cylindrical portion, and the two valve opening / closing arm pivot brackets 85 and 85 An opening 86 for penetrating the valve body housing portion 67b is formed so that one end of the valve opening / closing arm 68a is in contact with the valve body 67a.

The valve seat 67c has an end face on the upstream side of the reduced diameter portion formed on the inner surface of the downstream end portion of the valve body housing portion 67b formed on a surface perpendicular to the central axis of the valve body housing portion 67b. The valve seat 67c is used as a valve seat 67c, and an O-ring 77 provided on the upper end 71 of the truncated cone shape of the valve body 67a is brought into contact with the valve seat 67c to seal the flow path. On the downstream side of the valve seat 67c, a large number (eight in the figure) of rectangles that are in contact with the downstream end surface of the reduced diameter portion 82 and extend to the vicinity of the downstream end surface of the valve body housing portion 67b are equally spaced on the circumference. The ribs 87,... 87 of the cross section are erected to rectify the flow on the downstream side of the on-off valve 67.
The flange 88 protruding to the outer peripheral side of the reduced diameter portion 82 is formed in a rectangular shape having a length in which the axial length reaches an intermediate position from the downstream surface to the downstream end of the valve body housing portion 67b. The anti-rotation rib 89 is projected.

The coil spring 67d for energizing the valve body is downstream of the upstream end surface of the locking projection provided on the outer peripheral side of the central portion of the valve body 67a and the spring pressing member 70 fixed in position by the attachment of the connection port 66. The valve body 67a is externally fitted between the side end surfaces.
As in the first embodiment, the spring pressing member 70 is an annular member that forms a spring seat inserted on the inner surface side of the downstream end portion of the valve body housing portion 67b, and is pressed against the valve spring urging coil spring 67d. The end 31 on the side opposite to the contact side is reduced in diameter so that the end on the threaded portion side of the connection port 66 can be externally fitted, and the position is fixed by screwing the connection port 66 into the valve body housing portion 67b. The The downstream end surface 32 of the spring pressing member 70 forms a surface perpendicular to the central axis of the valve body 67a as a contact surface of the valve body urging coil spring 67d.

As shown in FIGS. 24 to 27, the valve opening / closing mechanism 68 is provided with a plate-like pressing member 64a projecting from the central portion on the inner surface side of the operation lever 64, and one end of the valve opening / closing mechanism abutting on the pressing member 64a. 68a, valve opening / closing arm pivot brackets 85 and 85 that pivotally support the valve opening / closing arm 68a, and a valve that contacts the end of the valve opening / closing arm 68a opposite to the pressing member contact side It consists of the ring-shaped protrusion member 76 of the body 67a.
Of these, the valve opening / closing arm 68a is a member having an L-shaped side surface as shown in FIG. 35, and the cylinders 68b and 68b protrude outward from the end faces on both sides at the intersection, respectively. Each valve opening / closing arm shaft support bracket 85 is formed so as to be supported by the shaft. The long side of the L-shaped member is used as a portion that abuts against the pressing member 64a of the operating lever 64, and an elastic contact portion 68c that is used as a spring that is notched in a gate shape and the remaining portion is curved and protrudes outward at the center portion. Form. The short side of the L-shaped member protrudes from both side ends of the member, passes through the opening 86 of the valve body accommodating portion 67b, and sandwiches the valve body 67a from both sides, and at the tip of the ring of the valve body 67a Two hook-shaped members 68d and 68d are formed with protruding portions that contact the protruding members 76.

As shown in FIGS. 23 and 27, the lock mechanism 69 forms a cam having a substantially heart-shaped guide groove, and includes a locking body 69b fitted on the inner surface side of the lower end portion of the operation lever, and a metal bar. Bending is formed into a substantially portal shape, and a cam follower that engages with a cam guide groove formed in the locking body 69b with its tip end inward is formed as a locking member formed in the valve body housing portion 67b. A proximal end side is fitted into a shaft support gap formed between the single mounting brackets 67e, 67e and the locking member 67f, and a distal end portion serving as a free end and a base end fitted into the shaft support gap are provided. It consists of a locking piece 69a formed in the shape of a flexible elongated bar.
As shown in FIGS. 36 and 37, the locking body 69b is provided with a tongue piece 41 for locking to a locking body mounting bracket 64b protruding from the inner surface side of the operation lever 64 at the upper part of the cam component. A plate-like projecting piece 42 for projecting and penetrating through a through hole 64c formed at the lower end of the operation lever 64 is suspended below the cam component.

The cam portion formed in the locking body 69b constitutes a substantially heart-shaped cam groove having a different shape on each side surface of the cam constituting portion.
The cam portion on the left side when viewed from the entrance side of the locking piece 69a has a reduced portion 43 in which the interval between the peripheral walls is reduced until the area becomes a predetermined size, and an area enlarged portion in which the interval between the peripheral walls is subsequently increased. 44, a cam center portion 45 projecting in the shape of a substantially heart-shaped island with the pointed portion facing the inlet side at the center of the portion having an enlarged area (left side), and a substantially heart-shaped cam center The cam follower moving direction restricting member 46 is provided at the innermost portion with the inclined surface facing the recess 45a formed on the opposite side of the sharpened portion formed in the portion 45. A guide groove 47 serving as a substantially heart-shaped circulation path is formed by the movement direction regulating member.

The cam portion on the right side as viewed from the inlet side of the locking piece 69a has a peripheral wall 51 whose interval is reduced in two steps until the area reaches a predetermined size, and a cam central portion 45 formed on the left cam portion. A substantially heart-shaped circulation path is formed by forming a different shape at a position corresponding to the shape and projecting in a substantially heart-shaped island shape (right side) with the pointed portion facing the inlet side (right side). A guide groove 53 is formed.
(Right side) The cam center portion 52 has a small extent extending to the back of the convex portions 52b and 52c formed on the side of the substantially heart-shaped recess 52a on the peripheral wall 51 at a position where the interval formed on the back side is reduced. It arrange | positions so that the one convex part 52b may oppose.
With the configuration of the left and right cam portions, the movements of the distal end portions of the cam followers that move relative to each other along the left and right cam portions are intentionally different, and the movement of each rod-like portion of the locking piece 69a is caused by the twist of the base portion. It is possible to prevent the cam follower moving along the cam portion from moving in the forward direction and the reverse direction.

[Function and effect]
In the second embodiment configured as described above, when the main body gripping part 63 is squeezed from the water-stopping state shown in FIGS. 23 and 24 and the operation lever 64 is moved in the direction close to the on-off valve 67, as shown in FIG. Around the axis of the cylinders 68b and 68b, the pressing member 64a of the operating lever 64 causes the valve opening / closing arm 68a of the valve opening / closing mechanism 68 to approach the opening / closing valve 7 side against the spring biasing force of the elastic contact portion 68c. The ring-shaped projecting member 76 is pressed in the valve opening direction by the hook-shaped members 68d, 68d, and water is sprayed.

  At this time, the locking body 69b of the locking mechanism 69 is close to the on-off valve 67 side, and the free end of the locking piece 69a is inserted into the guide grooves 47 and 53 of the locking body 69b (FIG. 38A). . The amount of movement (distance) of the operation lever 64 close to the on-off valve 67 is determined according to the degree of strength of the main body gripping part 63, and the guide grooves 47, 53 into which the free ends of the locking pieces 69a are inserted. The amount of entry (position) is determined (FIGS. 38 (B), (C), (D)). In a state where the tightening is strengthened, the free end of the locking piece 69a moves to the back of the arrangement position of the cam center portions 45 and 52 (FIGS. 38C and 38D), and then a slight force is applied. When loosened, the elastic force due to the bending of the locking piece 69a generated by moving the inclined surfaces of the cam central portions 45 and 52 acts, and the free end of the locking piece 69a moves in a direction to return to the neutral position. Therefore, the return position of the free end moves in a direction to be locked to the recesses 45a and 52a of the cam center portions 45 and 52. Thus, the locking piece 69a is locked to the recesses 45a and 52a formed on the inner side of the cam central portions 45 and 52 of the locking body 69b (FIG. 38E). Thereafter, unless this locking is released, the movement in the direction of returning the operation lever 64 to the original position is stopped, the locked state continues, and watering can be maintained without any particular operation.

After locking, when the gripping strength of the body gripping part 63 is slightly increased and then the gripping is loosened again, the valve body 67a is closed by the spring biasing force of the valve body biasing coil spring 67d incorporated in the on-off valve 67. In conjunction with this, the position of the operation lever 64 also moves in a direction away from the on-off valve 67, and the free end of the locking piece 69a moves further to the back than the recesses 45a, 52a (see FIG. 38 (F)), the movement of the cam follower is restricted by the movement direction restricting member 46, and the cam follower moves in a direction passing the convex portion on the opposite side to the entry side of the concave portions 45a and 52a (FIG. 38 (G)). When the free end of the stop piece 69a moves to the far side from the arrangement position of the cam center portions 45 and 52, it enters the return side passage of the guide grooves 47 and 53, and the locked state is released (FIG. 38 (H)).
When the grip is further loosened after the locked state is released, the valve body 67a further moves in the valve closing direction by the spring biasing force of the valve body biasing coil spring 67d incorporated in the on-off valve 67 (FIG. 38 (I At the same time, the position of the operation lever 64 is also moved to the water stop side, and the free end of the locking piece 69a passes through the return side passage of the guide grooves 47, 53 and passes through the contraction portion 43 and the peripheral wall 51, and returns to the original position. At the same time, the valve body 67a returns to the valve closed position (FIG. 38A), and the operation lever 64 also returns to the water stop position to stop watering.

  In this second embodiment, it is possible to arbitrarily and easily select the sprinkling state, the sprinkling lock state, and the water stopping state by simply tightening the main body gripping part 63 and the operation lever 64 and strengthening or weakening the gripping force. Thus, the operability of the watering nozzle can be improved, and the one-handed operation can be easily performed to improve the usability.

It is a partial fracture perspective view which fractures | ruptures and shows 1st Embodiment in the nozzle for water spraying of this invention partially per grip part. It is a partial longitudinal cross-section explanatory drawing which shows a longitudinal cross-section partially about the holding part at the time of the water stop of 1st Embodiment same as the above. It is explanatory drawing which shows the cross section of each position in FIG. 2, (A) is explanatory drawing which shows AA cross section, (B) is explanatory drawing which shows BB cross section, (C) is CC cross section. It is explanatory drawing shown. It is a partially broken perspective view which shows partially broken about a grip part at the time of water passing of a 1st embodiment same as the above. It is a partial longitudinal cross-section explanatory drawing which shows a longitudinal cross-section partially about the holding part at the time of water flow of 1st Embodiment same as the above. It is explanatory drawing which shows the cross section of each position in FIG. 5, (A) is explanatory drawing which shows an AA cross section, (B) is explanatory drawing which shows a BB cross section, (C) is CC cross section. It is explanatory drawing shown. It is explanatory drawing which shows the operation lever of 1st Embodiment same as the above, (A) is the perspective view seen from the right front, (B) is the perspective view seen from the left rear, (C) is a rear view, (D) is ( (C) The longitudinal cross-sectional view which shows the AA cross section, (E) is explanatory drawing which shows the BB cross section of (D). It is explanatory drawing which shows the valve body of 1st Embodiment same as the above, (A) is a perspective view, (B) is a front view, (C) is a top view. It is sectional drawing which shows the valve body of 1st Embodiment same as the above, (A) is explanatory drawing which shows the AA cross section shown to (C) of FIG. 8, (B) is explanatory drawing which shows a BB cross section, ( (C) is an explanatory view showing the CC cross section of (B), (D) is an explanatory view showing the DD cross section of (B), (E) is an explanatory view showing the EE cross section of (B), (F) is explanatory drawing which shows the FF cross section of (B). It is a perspective view which shows the valve body accommodating part of 1st Embodiment same as the above, (A) is the perspective view seen from the lower right side surface, (B) is the perspective view seen from the upper left side surface. It is explanatory drawing which shows the valve body accommodating part of 1st Embodiment same as the above, (A) is a front view (B) is a right view. It is sectional drawing which shows the valve body accommodating part of 1st Embodiment same as the above, (A) is sectional drawing shown by the AA line of FIG. 11 (A), (B) is the BB line of FIG. 11 (B). FIG. 13C is a cross-sectional view taken along line CC of FIG. 12B, and FIG. 13D is a cross-sectional view taken along line DD of FIG. It is a perspective view which shows the spring holding member of 1st Embodiment same as the above, (A) is a perspective view which shows the surface by the side of a spring contact, (B) is a perspective view which shows the surface by the side of a connection port fitting. It is a perspective view which shows the valve opening-closing arm of 1st Embodiment same as the above, (A) is the perspective view seen from the operation lever side, (B) is the perspective view seen from the valve body accommodating part side. It is state explanatory drawing which shows the rotation start of the valve body in 1st Embodiment same as the above. It is a state explanatory view showing the start of rotation of the valve body in the first embodiment, wherein (A) is a cross-sectional view taken along line AA in FIG. 15, (B) is a cross-sectional view taken along line BB in FIG. (C) is sectional drawing shown by the CC line of FIG. It is a state explanatory view showing the valve body locked state setting in the first embodiment same as above, (A) is a cross-sectional view at the same position as the cross-sectional view taken along line AA in FIG. 15, (B) is in FIG. Sectional drawing in the position similar to sectional drawing shown by a BB line, (C) is sectional drawing in the same position as the sectional view shown in CC line of FIG. It is a state explanatory drawing which shows during the lock state setting of the valve body in 1st Embodiment same as the above. It is a state explanatory view showing that the valve body is locked in the first embodiment, wherein (A) is a cross-sectional view taken along line AA in FIG. 18, and (B) is a cross-sectional view taken along line BB in FIG. FIG. 14C is a cross-sectional view taken along line CC in FIG. The state explanatory drawing which shows the state just before the lock state setting completion of the valve body in 1st Embodiment same as the above, (A) is sectional drawing in the position similar to sectional drawing shown by the AA line of FIG. 18, (B) is FIG. 18C is a cross-sectional view at the same position as the cross-sectional view taken along the line BB in FIG. 18, and FIG. 18C is a cross-sectional view at the same position as the cross-sectional view taken along the line CC in FIG. It is state explanatory drawing which shows the lock setting completion state of the valve body in 1st Embodiment same as the above. The state explanatory drawing which shows the lock setting completion state of the valve body in 1st Embodiment same as the above, (A) is sectional drawing shown by the AA line of FIG. 21, (B) is the cross section shown by the BB line of FIG. FIG. 2C is a cross-sectional view taken along the line CC in FIG. It is a partial fracture perspective view which fractures | ruptures and shows 2nd Embodiment of the nozzle for water spraying of this invention partially per grip part. It is a partial section explanatory view shown partially broken about a grip part and a valve body storage part at the time of water stop of a 2nd embodiment same as the above. It is a fragmentary sectional explanatory view shown partially broken about a grasping part and a valve body accommodation part at the time of passing water of a 2nd embodiment same as the above. It is side surface fragmentary explanatory drawing which fractures | ruptures and shows along a central axis about the holding part at the time of the water stop of 2nd Embodiment same as the above. It is side surface fragmentary explanatory drawing which fractures | ruptures and shows along a central axis about the holding part at the time of water flow of 2nd Embodiment same as the above. It is a fragmentary sectional view which shows the cross section along the AA of FIG. It is sectional drawing expanded and shown along the BB line of FIG. It is sectional drawing expanded and shown along the CC line of FIG. It is a perspective view which shows the valve body of 2nd Embodiment same as the above, (A) is the state which turned the opening to the front, (B) is explanatory drawing which shows the state rotated 45 degree | times from the state of (A). It is a perspective view which shows the valve body accommodating part of 2nd Embodiment same as the above. It is explanatory drawing which shows the valve body accommodating part of 2nd Embodiment same as the above, (A) is a side view (B) is a rear front view. It is sectional drawing which shows the valve body accommodating part of 2nd Embodiment same as the above, (A) is sectional drawing shown by the AA line of FIG.33 (B), (B) is the BB line of FIG.33 (A). It is sectional drawing shown. It is a perspective view which shows the valve opening-closing arm of 2nd Embodiment same as the above, (A) is the perspective view seen from the operation lever side, (B) is the perspective view seen from the valve body accommodating part side. It is a perspective view which shows the latching body used for the locking mechanism of 2nd Embodiment same as the above, (A) is the perspective view seen from the left front, (B) is the perspective view seen from the right front. It is a three-plane figure which shows the latching body used for the locking mechanism of 2nd Embodiment same as the above, (A) is a rear front view seen from the valve body accommodating part side, (B) is a left side view, (C) is a right side surface. FIG. It is operation | movement explanatory drawing which shows operation | movement of the locking mechanism of 2nd Embodiment same as the above in contrast with a left cam and a right cam, (A) is a water stop state, (B) is a watering state, (C) is a watering state, ( (D) is with watering lock, (E) is with watering lock state, (F) is with watering lock release start, (G) is just before watering lock is released, (H) is with watering lock release, (I) is for water stop direction It is a state explanatory view showing movement to.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,61 Water spray nozzle 2,62 Discharge side main body 3,63 Main body gripping part 4,64 Operation lever 4a, 64a Press member 5,65 Water spray port 6,66 Connection port 7,67 On-off valve 7a, 67a Valve body 7b, 67b Valve body accommodating portion 7c, 67c Valve seat 7d, 67d Valve body urging coil spring 7e Position regulating rib (valve body positioning member)
7f, 67f Locking member 7g, 70 Spring pressing member 8, 68 Valve opening / closing mechanism 8a, 68a Valve opening / closing arm (opening / closing valve operating member)
8b, 68b Cylinder 8c, 68c Elastic contact portion 8d, 68d Hook-shaped member 9 Lock mechanism 9a Valve body rotating arm (ratchet claw)
10 Operation lever biasing coil springs 11, 71, upper end (valve element positioning member)
11a Rectangular groove 11b Thick rib 12, 15, 72, 75 O-ring groove 13, 73 Rib 14, 74 Side opening 16 Shallow groove (notch for preventing reverse rotation of valve body)
17, 76 Ring-shaped projecting member 18 Ratchet gear 19 Locking projecting member 22, 82 Reduced diameter portion 23, 83 Opening portion 25, 85 Valve opening / closing arm shaft support bracket 26, 86 Opening 27 Cylindrical projection 28, 88 Flange 29, 89 Anti-rotation rib 31 End 32 Downstream end face 33, 34, 77, 78 O-ring 47, 53 Guide groove (substantially heart-shaped circulation path)
64b Locking body mounting bracket 64c Through hole 67e Locking piece mounting brackets 67g, 67h Locking piece position restricting member 69 Locking mechanism 69a Locking piece 69b Locking body

Claims (5)

  An on-off valve for switching the water spray stop and at least one end of the main body gripping part is provided so as to be able to approach and separate. The nozzle for watering provided with the operation member formed so that the lock of the watering which maintains the valve open state of the said on-off valve by this, and the cancellation | release of the locked state could be selectively operated.   A water flow operation mechanism interlocked with the on-off valve and a lock mechanism for maintaining the valve open state of the on-off valve are disposed between the main body gripping portion and the operation member. The nozzle for watering of claim | item 1.   The operation member is formed as an operation lever having an upper end portion rotatably attached to an upper end portion of the main body gripping portion, and the water flow operation mechanism is arranged on the inner surface side of the central portion of the operation lever and the central portion of the main body gripping portion. The nozzle for watering according to claim 2, wherein the lock mechanism is disposed between the inner surface of the lower end portion of the operation lever and the main body gripping portion.   The water flow operating mechanism is opened / closed to apply an operating force to the valve opening side against the closing side biasing force of the valve opening / closing mechanism incorporated in the main body gripping part by pressing the operation lever in one direction. The valve operating member is incorporated, and the opening / closing valve operating member is assembled so that the closing biasing force of the valve opening / closing mechanism is recovered by releasing the pressing operation of the operating lever so that the biasing force acts on the valve closing side. The nozzle for watering of Claim 3 characterized by the above-mentioned. 5. The lock mechanism according to claim 3, wherein the lock mechanism is configured with an alternate conversion type lock mechanism in which a lock state and an unlock state are alternately switched by a pressing operation in one direction of the operation lever. The nozzle for watering of description.

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