JP2009022848A - Water spraying nozzle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To automatically return a water spraying nozzle to a cum orbiting passage without disassembling even when a follower is disengaged from the cum by the shock such as the fall down or the like during assembling or after assembling. <P>SOLUTION: The follower 5a enters into the orbiting pass 4a or entering passage 4c through a guide pass 4d even being disengaged from the entering pass 4c or the orbiting pass 4a of the cum 4 by providing the guide pass 4d for guiding the follower 5a disengaged from the orbiting pass 4a toward the orbiting pass 4a with the action of an operation member 3 separately from the entering pass 4c communicating with the orbiting pass 4a of the cum 4. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

The present invention relates to a watering nozzle that is attached to the tip of a hose so that water can be freely passed (watered) and water can be stopped.
Specifically, it has an open / close valve that switches between water flow and water stop, and an operating member that opens and closes the open / close valve. The operation member moves the follower along the cam to keep the open / close valve open. It is related with the watering nozzle locked so that it may.

  Conventionally, as this type of watering nozzle, a valve opening / closing mechanism is provided as an operation mechanism for an opening / closing valve on the body gripping portion side, and a locking piece made of a flexible elongated bar is provided so as to be able to bend and deform. On the side of the operating member (operating lever) attached to the main body gripping part, a cam with a substantially heart-shaped guide groove is provided as a locking mechanism that fixes the valve opening / closing mechanism. When the lever is moved in the direction approaching the opening / closing valve, the valve opening / closing mechanism rotates to sprinkle water, and the free end of the locking piece extends from the reduced portion on the inlet side and the peripheral wall into the guide groove of the locking body. When the lock lever continues to be locked and is then loosened again, the operating lever moves in the opposite direction, so that the free end of the locking piece is behind the recess. To enter the return channel of the guide groove, Click state there is to stop the water spray is released (e.g., see Patent Document 1).

Japanese Patent Laying-Open No. 2005-138056 (page 9-12, FIG. 23-38)

However, in such a conventional watering nozzle, the free end of the locking piece that is a follower at the time of assembling is kept waiting near the reduced portion and the peripheral wall, which is the approach path to the peripheral circuit of the cam, An operating member is incorporated into the main body gripping part, but this locking piece is covered with the main body gripping part and the operating member, and the place where the follower enters the cam entry path cannot be visually confirmed from the outside. When the follower standby position moves away from near the approach path of the cam due to the impact of the cam, the misalignment (displacement) occurs. There is a problem that if the operating member is forcibly moved by striking the peripheral part and not moved, the follower and the cam are damaged and cannot be locked.
This misalignment still occurs even if the follower is restricted to the minimum operating range necessary for moving the guide groove, and this type of watering nozzle is an unavoidable problem.
In addition, if an impact is applied to the watering nozzle by accidentally dropping it after it has been assembled, or by striking it against an object, the free end of the locking piece, which is a follower, will bend and deform, and the entrance path to the peripheral circuit of the cam Even if you try to move the operating member in this state, the follower that is displaced does not move against the peripheral part of the cam, If the operating member is forcibly moved, the follower and the cam are damaged and cannot be locked.
Further, in order to return such a displaced follower to the cam entry path, a part or the whole of the watering nozzle is disassembled, and the operation member is moved away from the operation region to correct the position of the follower. There must be.
However, in general, the operation member is mounted so that it cannot be moved out of the operation region of the operation member from the viewpoint of failure or mischief, and the whole watering nozzle cannot be disassembled for the same purpose. Due to the structure and structure that is difficult to disassemble, consumers could not easily repair it.

The first invention of the present invention is intended to automatically return to the peripheral circuit of the cam without disassembling even if the follower is detached from the cam due to an impact such as dropping after assembly or after assembly. is there.
In addition to the object of the first invention, the second invention aims to reliably guide the displaced follower to the guide path.
In addition to the objects of the first invention or the second invention, the third invention aims to surely guide the followers without hesitation.

In order to achieve the above-mentioned object, the first invention of the present invention directs the follower separated from these to the peripheral circuit or the approach path separately from the follower approach path leading to the peripheral circuit of the cam. The guiding path for guiding is provided in the operation direction of the operation member.
According to a second aspect of the present invention, in the configuration of the first aspect, an entrance of the approach path and an entrance of the guide path are provided close to each other, and an area where the entrance of the entrance path and the entrance of the guide path are combined is defined as an operation of the operation member It is characterized in that a structure formed so as to cover the entire length of the range in which the follower moves in the direction intersecting the direction is added.
According to a third aspect of the present invention, in the configuration of the first aspect of the invention or the second aspect of the invention, a part or all of the guide path from the entrance to the peripheral circuit is inclined in a direction in which it is elastically pressed against the follower. It is characterized by adding a configuration.

According to the first aspect of the present invention, the guide member guides the guide follower separated from the follower leading to the peripheral circuit or the approach path separately from the follower approach path leading to the peripheral circuit of the cam. By providing in the direction, even if the follower is disconnected from the approach path or the peripheral circuit of the cam, the follower enters the peripheral circuit or the access path through the guide path by the operation of the next operation member.
Therefore, even if the follower is detached from the cam due to an impact such as dropping during assembly or after assembly, the sprinkling nozzle can be automatically returned to the peripheral circuit of the cam without disassembling.
As a result, if the follower is once removed from the cam entry path or peripheral circuit due to an impact such as a drop during assembly or after assembly, the displaced follower hits the peripheral part of the cam and the operating member cannot move. Compared to the conventional one, damage to parts due to unreasonable operation can be prevented, and it can be used without repair for a long time.
Furthermore, when the entire nozzle is structured so that it can be disassembled, even if the consumer disassembles and assembles, the follower can be easily guided to the peripheral circuit of the cam. Can be used and convenient.

In the second invention, in addition to the effects of the first invention, the entrance of the approach path and the entrance of the guide path are provided close to each other, and the region where the entrance of the entrance path and the entrance of the guide path are combined is provided on the operation member. By forming it so as to cover the entire length of the range in which the follower moves in the direction intersecting the operation direction, the follower enters the entrance side of the guide path regardless of where the follower is displaced.
Therefore, the displaced follower can be reliably guided to the guide path.

In addition to the effects of the first invention or the second invention, the third invention is formed by inclining a part or all of the guide path from the entrance to the peripheral circuit in a direction in which it is elastically pressed against the follower. By doing so, the follower is guided from the road surface of the taxiway to the peripheral circuit without leaving.
Therefore, the follower can be surely guided without hesitation.
Also, the follower that has once returned to the peripheral circuit does not come off the guide path.

  As shown in FIGS. 1 to 6, the embodiment of the watering nozzle A of the present invention includes a nozzle body 1 to which a hose H is connected, and an on-off valve 2 for switching between water flow and water stoppage of a fluid supplied from the hose H. In order to control the opening and closing of the on-off valve 2, an operating member 3 provided so as to be reciprocally movable in the approaching and separating directions with respect to the nozzle body 1, and an open state of the on-off valve 2 in conjunction with the operation of the operating member 3 Or it consists of the cam 4 which maintains a valve closing state, and its follower 5a.

  As shown in FIG. 1, a valve body 2a of an on-off valve 2 is incorporated in the nozzle body 1 in a reciprocating manner via an elastic member 2b such as a coil spring, and the valve opening / closing linked to the valve body 2a is opened. The distal end of the arm 2c is brought into contact with or close to the operating member 3, and the urging force of the elastic member 2b always presses the valve body 2a in the normal valve closing direction, and also via the valve opening / closing arm 2c. Thus, the operating member 3 is pressed in a direction away from the nozzle body 1.

  Here, when the operating member 3 is pressurized and moved closer to the nozzle body 1 from the water stop state shown by the solid line in FIG. 1, it opens and closes via the valve opening / closing arm 2c as shown by the two-dot chain line in FIG. The valve body 2a of the valve 2 moves in the valve opening direction while compressing and deforming the urging elastic member 2b, whereby the on-off valve 2 is opened and switched to the water passing state. Water is sprayed from the water port 1a in a predetermined pattern.

  If the pressure applied to the operation member 3 is released from this water flow state, the valve body 2a of the on-off valve 2 moves in the valve closing direction by the restoring force of the biasing elastic member 2b, and the valve opening / closing arm The operating member 3 moves away via 2c, whereby the on-off valve 2 is closed and switched to a water-stopped state.

  Further, either one of the nozzle body 1 and the operation member 3 is provided with the cam 4, and the other is provided with the follower 5a, which are arranged so as to face each other. ing.

  As shown in FIGS. 2A to 2C, the cam 4 includes a peripheral circuit 4a in which a follower 5a, which will be described later, circulates and moves in the direction of operation of the operation member 3 and the direction intersecting the operation member 3, and the peripheral circuit 4a. A substantially heart-shaped central locking portion 4b disposed in the center and an approach path 4c leading to the peripheral circuit 4a are provided in a concave or convex shape on the same plane.

  The approach passage 4c is used for introducing the follower 5a disposed outside the cam 4 into the peripheral circuit 4a by the approaching operation of the operation member 3 when the watering nozzle A is assembled. It is also possible to use it as a place where the node 5a waits after the circuit 5a circulates along the circuit 4a until the next circuit starts.

  As shown in FIGS. 3 (a) and 3 (b), the follower 5a is always in contact with and engaged with the peripheral circuit 4a of the cam 4, the engaging portion 4b of the substantially heart-shaped central portion, the entrance path 4c, and the like. And is supported so as to be capable of reciprocating in the direction intersecting the operation direction of the operation member 3 along the peripheral circuit 4a.

  The cam 4 and the follower 5a are moved from the water-stopped state shown in FIGS. 4 (a) and 4 (b) by the operation of the operation member 3 toward the nozzle body 1, as shown in FIGS. 5 (a) and 5 (b). The follower 5a enters the peripheral circuit 4a through the approach path 4c, moves as it is, enters and is locked into the locking portion 4b of the substantially heart-shaped central portion, and thereby locks the operating member 3 while moving closer, The movement of the member 3 is stopped and the water passing (sprinkling) state is maintained.

  After this locking, the operation member 3 is further moved closer to the nozzle body 1 so that the follower 5a is disengaged from the engaging portion 4b of the substantially heart-shaped central portion, as shown in FIG. If the operating member 3 is released as it is, the lock is released by the restoring force of the biasing elastic member 2b incorporated in the opening / closing valve 2, and the valve opening / closing arm 2c is interposed as shown by the solid line in FIG. As the operating member 3 moves away, the on-off valve 2 closes and returns to the water stop state.

  Further, as shown in FIGS. 2A to 2D and FIG. 3B, the cam 4 is separated from the above-described peripheral circuit 4a and the entrance path 4c by the entrance path 4c and the peripheral circuit 4a. A guide path 4d for guiding the detached follower 5a toward the peripheral circuit 4a or the approach path 4c is provided in the operation direction of the operation member 3.

The entrance side of the guide path 4d is provided in the vicinity of the entrance of the approach path 4c, and a region where the entrance side of the guide path 4d and the entrance of the entrance path 4c are combined with the operation direction of the operation member 3. It is formed so as to cover the entire length of the range in which the follower 5a moves in the intersecting direction.
That is, since the follower 5a is supported so as to be reciprocally movable in the direction intersecting the operation direction of the operation member 3 along the peripheral circuit 4a by the approaching and separating operation of the operation member 3, including the movement region. All the followers 5a are surely guided to the guide path 4d no matter where the followers 5a are displaced over the entire movement range of the followers 5a in the same direction.

Furthermore, an operation restriction means 6 is provided between the operation member 3 and the nozzle body 1 to restrict the operation member 3 from moving away from the operation area. A structure that can be released from the outside of A is preferable.
Embodiments of the present invention will be described below with reference to the drawings.

  In the first embodiment, as shown in FIGS. 1, 2 and 3, the nozzle body 1 is formed in a pistol shape with a material such as synthetic resin, and the upper end portion of the handle is used as the operation member 3 with respect to the grip portion 1b. 1 is pivotally supported so as to be pivotable or swingable in the horizontal direction of the paper surface of FIG. 1, and a pair of the cams 4 are recessed in the inner portion of the operation member 3 so that the valve body 2a of the on-off valve 2 slides. The cam arm 5 in which a pair of followers 5a are formed in a substantially cylindrical valve body accommodating portion 2d that is freely accommodated is shown in a case where the range of movement is limited in the vertical direction of the drawing.

  As shown in FIGS. 3A and 3B, the cam arm 5 is formed of an elastically deformable material such as synthetic resin, and a pair of followers 5a are integrally formed at the tip thereof so as to face each other. These followers 5a are slid elastically in contact with the peripheral circuit 4a, the entrance path 4c and the guide path 4d of the cam 4, and a pair of support shafts 5b are formed at the base end. The follower 5a is pivotably supported in the vertical direction by being pivotally attached to the outer surface of the valve body housing portion 2d.

  As shown in FIGS. 4 (a) and 4 (b), a movement range restricting portion 5 c is provided on the outer surface of the valve body housing portion 2 d facing the support shaft portion 5 b of the cam arm 5, so that the cam arm 5 The range of movement of the follower 5a in the vertical direction is limited by the engagement.

  As shown in FIGS. 2A to 2C, the cam 4 divides the peripheral circuit 4a of the cam 4 into a plurality of parts, and inclines it into the pressure-contact direction of the follower 5a, and from the approach path 4c to the peripheral circuit 4a. The elastic deformation of the cam arm 5 is utilized by forming a step in the middle of the path that passes through the substantially heart-shaped center part 4b and the path from the locking part 4b back to the peripheral circuit 4a. Thus, each follower 5a smoothly circulates.

  Further, as shown in FIGS. 2 (a) to 2 (d), the guide path 4d extends from the entrance of the guide path 4d to the extent that the cam arm 5 is elastically deformed and can overcome the peripheral wall 4e of the peripheral circuit 4a. By forming a part or all of the peripheral circuit 4a toward the peripheral wall 4e in a direction close to the follower 5a and sliding the follower 5a elastically in pressure contact with the inclined road surface, By utilizing the elastic deformation of the cam arm 5, each follower 5a gets over the peripheral wall 4e of the peripheral circuit 4a and enters the peripheral circuit 4a.

  That is, each guide path 4d is inclined so as to gradually expand from the cam end face 4f where the entrance of the entrance path 4c is formed, and reaches the peripheral wall 4e of the peripheral circuit 4a. The peripheral circuit 4a is formed so as to be recessed.

  As the operation restricting means 6 of the operation member 3, as shown in FIGS. 4 (a), 4 (b) and 6 (a) (b), the handle bottom surface 3a of the operation member 3 and the valve body accommodating portion 2d are provided. The engaging portions 6a and 6b that face each other are formed on the flange 2e that protrudes from the outer periphery of the nozzle body, and these engaging portions 6a and 6b are moved over and engaged with each other by the movement of the operating member 3 relative to the nozzle body 1. This restricts the operation member 3 from moving away from the operation region.

Further, the locking portions 6a and 6b are formed by elastically deforming the flange 2e protruding from the valve body housing portion 2d so as to be exposed to the outside of the nozzle body 1, and the handle bottom surface 3a of the operation member 3. 6 (a) and 6 (b), the engaging portions 6a and 6b are disengaged from the outside of the watering nozzle A, and the operation restricting means 6 of the operation member 3 is released. The operation member 3 can be moved away from the operation area.
Thereby, the said holding | grip part 1b is opened and the whole nozzle main body 1 is made disassembleable.

Next, the effect of the watering nozzle A will be described.
First, in the assembling process of the watering nozzle A, as shown in FIGS. 6 (a) and 6 (b), the locking portions 6a and 6b, which are the operation restricting means 6 of the operation member 3, are disengaged. If A is accidentally dropped or an impact is applied by strongly hitting an object, the locking portions 6a and 6b, which are the operation restricting means 6 of the operating member 3, may be disengaged in the same manner.

  Thus, in the state where the operation restricting means 6 of the operation member 3 is released, the followers 5a, which are arranged at the tip of the cam arm 5 and are swingable in the vertical direction, are respectively positioned from the entrance path 4c of the cam 4. There is a possibility of deviation.

  Thus, even if each follower 5a is displaced from the entrance path 4c of the cam 4, if the operating member 3 is pressurized and moved closer to the nozzle body 1 as shown in FIGS. As described above, the displaced followers 5a enter from the entrances of the respective guide passages 4d formed over the entire length of the vertical movement range of the follower 5a in the vicinity of the respective entrance passages 4c, and pass through the guide passages 4d as they are. The arm 5 moves over the peripheral wall 4e while elastically deforming, and enters each peripheral circuit 4a.

The movement of the follower 5a at this time will be described in detail. As shown in FIG. 2 (d), each follower 5a first gradually expands while sliding along the inclined surface of the guide path 4d from the cam end surface 4f. Then, it reaches the peripheral wall 4e of the peripheral circuit 4a.
Then, it slides along each peripheral wall 4e as it is, and when it reaches the peripheral circuit 4a formed to be recessed more than that, it enters into each peripheral circuit 4a by the elastic restoring force of the cam arm 5, and thereafter each peripheral circuit It circulates along 4a and does not return to the peripheral wall 4e again.

  Further, due to the approaching movement of the nozzle body 1, the engaging portions 6a and 6b, which are the operation restricting means 6 of the operation member 3, get over and engage with each other, and the separation movement is restricted outside the operation region of the operation member 3. The follower 5a does not come off from each approach path 4c of the cam 4.

  Therefore, after that, the operation is returned to the operation by the operation member 3 via the cam 4 and the follower 5a, and the water stop state shown in FIGS. 4 (a) and 4 (b) and the states shown in FIGS. 5 (a) and 5 (b). It is switched to the water flow (sprinkling) state shown.

  Thereby, even if each follower 5a is detached from the entry path 4c of each cam 4 due to an impact such as dropping during assembly or after assembly, the peripheral circuit of each cam 4 without disassembling the nozzle body 1 or the operation member 3 It is possible to automatically return to 4a.

  In the second embodiment, as shown in FIG. 7, instead of the guide passage 4d of the first embodiment, a guide passage 4d 'that slopes downward from the entrance toward the entrance passage 4c is formed, thereby each follower. Even if the positions of the cams 4a are shifted from the approach paths 4c of the cams 4, the followers 5a that have shifted positions enter the approach paths 4c along the guide paths 4d '. Unlike the first embodiment shown in FIG. 6, the other configuration is the same as that of the first embodiment shown in FIGS.

In the illustrated example, the guide path 4d 'is inclined downward in a straight line from the entrance toward the approach path 4c.
As another example, the guide path 4d 'can be inclined downward in an arc from the entrance to the approach path 4c.
Therefore, the second embodiment shown in FIG. 7 can obtain the same effects as those of the first embodiment described above.

  As shown in FIG. 8, in this third embodiment, instead of the guide path 4d of the first embodiment described above, the inlet 5a inclines from the inlet toward the approach path 4c and the follower 5a toward the peripheral wall 4e of the peripheral circuit 4a. By forming the guide path 4d ″ that is inclined in the approaching direction, even if each follower 5a is displaced from the entry path 4c of the cam 4, the follower 5a that has been displaced is replaced by the guide path 4d ″. The structure is such that each follower 5a passes over the peripheral wall 4e of the peripheral circuit 4a and enters the peripheral circuit 4a using the elastic deformation of the cam arm 5 along the entrance path 4c. Unlike the first embodiment shown in FIGS. 1 to 6, the other configuration is the same as that of the first embodiment shown in FIGS. 1 to 6.

In the illustrated example, the guide path 4d ″ is inclined downward in a straight line from the entrance to the approach path 4c, and all of the guide path 4d toward the peripheral wall 4e of the peripheral circuit 4a is inclined in an arc shape in a direction close to the follower 5a. As another example, the guide path 4d ″ is inclined downward in an arc from the entrance to the approach path 4c, and only a part thereof toward the peripheral wall 4e of the peripheral circuit 4a is close to the follower 5a. It is also possible to incline in a circular arc shape.
Therefore, the third embodiment shown in FIG. 8 can obtain the same operational effects as the first embodiment described above.

In the above-described embodiment, the handle is pivotally supported so as to be pivotable or swingable as the operation member 3 with respect to the gripping portion 1b of the nozzle body 1 formed in a pistol shape. 1 may be formed in a shape other than the pistol shape, or the operation member 3 may be provided so as to be reciprocally movable in the approaching and separating directions with respect to locations other than the main body gripping portion 1b.
Further, the cam 4 is disposed on the operation member 3 and the follower 5 is disposed on the nozzle body 1. However, the present invention is not limited to this, and the cam 4 is disposed on the nozzle body 1 on the contrary. A follower 5 may be disposed on the member 3.
Further, although the cam 4 and the follower 5 are provided in pairs, respectively, the present invention is not limited to this, and one may be provided.
Accordingly, in these cases, the same effects as those of the above-described embodiment can be obtained.

It is a vertical front view which shows one Example of the watering nozzle of this invention. (A) is a partially enlarged front view of the cam, (b) and (c) are perspective views of the cam viewed from different directions, and (d) is a line (D)-(D) in FIG. A partial cross-sectional end view along the line shows the follower movement process. (A) is a perspective view of a cam arm provided with a follower, and (b) is a partially enlarged front view showing a movement path of the follower. (A) is a partially cutaway front view showing a partially stopped state of water, and (b) is a partial perspective view of the same state. (A) is a partially cutaway front view showing a water flow state partially enlarged, and (b) is a partial perspective view of the same state. (A) is a partially cutaway front view showing a partial displacement state of the follower, (b) is a partial perspective view of the same state, and (c) is a follower along the guide path. It is a partially notched front view which expands and shows the middle of the movement partially, (d) is a partial perspective view of the same state. It is a perspective view of the cam which shows the other Example of the watering nozzle of this invention. It is a perspective view of the cam which shows the other Example of the watering nozzle of this invention.

Explanation of symbols

A Sprinkling nozzle 1 Nozzle body 1a Sprinkling port 1b Holding part 2 Opening / closing valve 2a Valve body 2b Elastic member 2c Valve opening / closing arm 2d Valve body housing part 2e Flange 3 Operating member (handle) 4 Cam 4a Circumferential circuit 4b Substantially heart-shaped central part Locking part 4c approach path 4d guide path 4e peripheral wall 4f cam end face 5 cam arm 5a follower 5b support shaft part 5c movement range restricting part 6 operation restricting means 6a, 6b locking part H hose

Claims (3)

An on-off valve (2) for switching between water flow and water stop and an operation member (3) for opening / closing the on-off valve (2) are provided, and a follower along the cam (4) by the operation of the operation member (3) ( In the watering nozzle that locks the open / close valve (2) to remain open, by moving 5a)
Separately from the approach path (4c) of the follower (5a) leading to the peripheral circuit (4a) of the cam (4), the follower (5a) separated from these is connected to the peripheral circuit (4a) or the approach path (4c). A watering nozzle characterized in that guide passages (4d, 4d ′, 4d ″) leading to the head are provided in the operating direction of the operating member (3). The entrance of the approach path (4c) and the entrance of the guide path (4d) are provided close to each other, and a region where the entrance of the entrance path (4c) and the entrance of the guide path (4d) are combined is defined by the operation member (3). The watering nozzle of Claim 1 formed so that the follower (5a) might move over the full range which moves to the direction which cross | intersects an operation | movement direction. The watering nozzle according to claim 1 or 2, wherein a part or all of the guide path (4d) from the inlet to the peripheral circuit (4a) is inclined in a direction in which it is elastically pressed against the follower (5a).

Images