JPS6244770Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to an electric sprayer for killing insects by spraying a liquid such as an insecticide onto plants.

Structure of conventional example and its problems A conventional electric sprayer of this type has a structure as shown in FIGS. 1 to 3. That is, in FIGS. 1 and 2, 1 is the main body of the sprayer, 2 is a through hole provided in the center of the main body 1, and this through hole 2 is stepped so as to form a valve seat 3 in the middle. That's what I'm saying. 4 is a packing installed on the valve seat 3, and 5 is a valve stem slidably provided on the valve body 1. A valve part 6 is provided at the tip of the valve stem 5, and a liquid is provided on the outer periphery of the valve part 6. A plurality of cutouts 7 are provided to allow the flow of water. Also valve stem 5
The rear end passes through a bearing portion 8 screwed onto the rear end of the kettle body 1 and projects outward from the kettle body 1. 9 is a washer provided on the valve stem 5; 10 is a spring wrapped around the valve stem 5 and interposed between the valve part 6 and the washer 9; this spring 10 always keeps the valve part 6 in contact with the packing 4; It is biased in the direction of contact. 11 and 12 are watertight means such as O-rings. Reference numeral 13 denotes an inlet provided in the main body 1, and this inlet 13 communicates with a sprayer (none of which is shown) via a hose. Reference numeral 14 denotes a liquid outlet provided in the pot body 1, which communicates with the inlet 13 via the through hole 2. A joint threaded portion 15 for connecting an ejection nozzle or the like is provided on the outer periphery of the outlet 14. Further, as shown in FIG. 2, the pot body 1 has walls 16 on both sides, a through hole 17 is provided at the rear end of the wall 16, and a recess 18 is provided at the tip. 19 is a substantially L-shaped lever, and this lever 19 has a rotation shaft hole 20 in the middle.
By inserting a pin 21 into the rotation shaft hole 20 and the through hole 17, it is rotatably supported on the pot body 1. The tip end 19a of the lever 19 is located within the wall 16 of the main body 1, and usually has a step L as shown in FIG. 22 is a notch formed at the tip of the lever 19; 23 is a convex portion located behind the notch 22 and provided on the inner surface of the lever 19; and 24 is a notch 22.
A stopper formed with a groove 25 to be inserted into the
This stopper 24 is provided with a protrusion 26 that is slidably engaged with the protrusion 23 of the lever 19. 2
Reference numeral 7 denotes a wide projection provided at the tip of the stopper 24, and this projection 27 is detachably engaged with a wide locking hole 28 provided in the tip surface 1' of the stopper body 1.
Reference numeral 29 denotes a narrow protrusion that protrudes further than the wide protrusion 27, and this narrow protrusion 29 is removably engaged with a narrow holding hole 30 connected above the wide locking hole 28. match. Reference numeral 31 denotes a return spring for the lever 19, which is interposed between a protrusion 32 provided on the main body 1 and a groove 34 provided in the center rib 33 of the lever 19, and this return spring 31 always keeps the lever 19 out. It is biased in the direction of opening. Reference numeral 35 denotes a notch provided at the rear end 19b of the lever 19, and the rear end of the valve stem 5 is passed through this notch 35, and the rear end 19b of the lever 19 is inserted into the notch 35.
The rear end threaded portion 5 of the valve stem 5 is made to protrude further outward.
By screwing the nut 36 into the valve stem 5
The rear end 19b of the lever 19 is fixed to the rear end 19b of the lever 19.

The opening/closing operation of the Kotoku device in the above conventional configuration will be explained. To open the lock device from the state shown in FIG. 1, that is, the closed condition, the lever 19
The rear end 19b rotates counterclockwise about the pin 21 to move the valve stem 5 in the direction of arrow B against the spring force of the spring 10, thereby releasing the contact between the valve part 6 and the packing 4. . As a result, the liquid entering from the inlet 13 passes through the through hole 2 and reaches the outlet 14, where it is sprayed from a jet nozzle or the like. When you release your hand from this spraying state and release the pressure on the stopper 24, the valve stem 5 returns to its original state due to the spring force of the spring 10, bringing the valve portion 6 into contact with the packing 4 and blocking the flow of liquid. At the same time, the tip 19a of the lever 19 returns to its original state due to the spring force of the return spring 31. In this case, as shown in FIG. 1, the narrow protrusion 29 provided at the tip of the stopper 24 slides within the narrow holding hole 30 and comes into contact with the upper edge of the holding hole 30, preventing it from rising further. to prevent As a result, even if there is a gap l between the rear end of the lever 19 and the rear end 19b of the lever 19 due to variations in the finished dimensions of the parts or deformation of the parts, as shown in FIG. No, lever 1
The level difference between the tip 19a of the lever 19 and the wall 16 of the lever body 1, that is, the level difference L in which the tip 19a of the lever 19 is not pressed just by holding the pot body 1 is always maintained constant. When spraying liquid continuously, press the stopper 24 in the direction of arrow A to release the contact between the valve part 6 and packing 4, and then slide the stopper 24 in the direction of arrow C to widen the width. The protrusion 27 is engaged with the wide locking hole 28 of the pot body 1. As a result, the valve portion 6 and the packing 4 are kept in contact with each other, so that the liquid is continuously sprayed from the spray nozzle or the like.

Now, in recent years, there has been a shift from metal kettles to synthetic resin kettles for atomizers in order to make them easier to operate and reduce manufacturing costs. If the nozzle pipe 37 in Fig. 3 is long, it will be heavy, so
Attach the cap nut 38 to the synthetic resin joint threaded part 1 in Figure 1.
5 and screwed together, the joint threaded part 15 bends, and as a result, a gap is created between the O-ring 39 fitted in the liquid outlet 14 and the insertion part of the nozzle pipe 37 shown in FIG. At this time, in the worst case scenario, there was a danger that the liquid would leak out.

Purpose of the invention The present invention solves the above-mentioned conventional drawbacks by increasing the strength of the joint thread provided on the outside of the outlet.
To provide a fitting for a sprayer in which a threaded joint part does not bend due to the weight of a long nozzle pipe even when a long nozzle pipe is connected.

Structure of the Invention In order to achieve the above object, the present invention includes a main body made of synthetic resin having an inlet and an outlet communicating with the sprayer, a joint threaded part provided on the outside of the outflow port, and a joint threaded part provided on the outside of the outlet. a nozzle pipe connected to the outlet by screwing a cap nut onto the nozzle, and a metal pipe longer than the joint threaded part is provided inside the outlet so as to be in close contact with the synthetic resin part, According to this configuration, even when a long and heavy nozzle pipe is connected to the outlet by screwing a cap nut, the joint thread part will not bend, and as a result, the joint thread part provided on the outside of the outlet When a cap nut is screwed together, it can be tightened tightly and can fully fulfill the role of a gasket.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 4 and 5. In addition, in these FIGS. 4 and 5, FIGS. 1 to 3 shown in the conventional example are
Components that are the same as those shown in the figures are given the same numbers, so only the points that are different from the conventional example will be explained in FIGS. 4 and 5. In Fig. 4, reference numeral 40 denotes an outlet provided in the synthetic resin body 1. Inside the outlet 40, a reinforcing metal pipe 41 longer than the threaded joint part is installed so as to be in close contact with the synthetic resin part. It is provided for. 4
2 is a joint threaded part provided on the outside of the outlet 40, and this joint threaded part 42 is fitted with a cap nut 43 shown in FIG.
The female threads of the two are screwed together. 44 is the joint threaded part 42
When the cap nut 43 is screwed into the joint threaded portion 42, the cap nut 43 has a flange 43a at the entrance of the cap nut 43.
is pressed against the wall to ensure watertightness. In FIG. 5, 45 is a nozzle pipe, and a nozzle (not shown) for spraying liquid is coupled to the tip of this nozzle pipe 45. 46 and 47 are adhesives that bond the nozzle pipe 45 and the cap nut 43 together to make them watertight.

Next, the operation of the above configuration will be explained. In FIG. 4, the liquid that has flowed in from the inlet 13 flows out from the outlet 40.
The nozzle pipe 45 is attached to the nozzle pipe 45 by screwing a cap nut 43 shown in FIG. 5 into a joint threaded portion 41 provided on the outside of the outlet 40 shown in FIG. In this case, when the cap nut 43 is screwed all the way, the gasket 44 shown in FIG. 4 is strongly tightened, so that the nozzle pipe 45 shown in FIG. 5 is reliably connected to the pot body 1 shown in FIG. At this time, a metal pipe 41 that is longer than the joint threaded portion 42 is fixed inside the outlet 40 shown in FIG. As a result, the packing 44 shown in FIG. 4 is reliably tightened by the inlet flange 43a of the cap nut 43 shown in FIG. 5.

Effects of the invention As described above, according to the invention, a metal pipe that is longer than the threaded part of the joint is provided inside the outlet provided in the synthetic resin body so as to be in close contact with the synthetic resin part. Even if a heavy nozzle pipe is connected to the outlet by screwing a cap nut, the threaded part of the joint will not bend. If the
This has the effect of being able to sufficiently fulfill the role of a packing material.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional view of a conventional atomizer kettle, Fig. 2 is an exploded perspective view of the kettle, Fig. 3 is a half-cut sectional view of the nozzle pipe connected to the kettle, and Fig. 4 is a main part of the sprayer. FIG. 5 is a longitudinal cross-sectional view of the nozzle of the sprayer showing one embodiment of the invention, and FIG. 5 is a half-cut sectional view of the nozzle pipe connected to the nozzle. 1...Kotuku body, 13...Inflow port, 40...
Outlet, 41...metal pipe, 42...joint thread, 43...cap nut, 45...nozzle pipe.

Claims (1)

[Scope of utility model claims] A main body made of synthetic resin has an inlet and an outlet communicating with the sprayer, a joint threaded part provided on the outside of the outlet, and a cap nut is screwed into the joint threaded part to connect to the outlet. The sprayer is equipped with a nozzle pipe, and a metal pipe longer than the joint thread part is provided inside the outlet so as to be in close contact with the synthetic resin part.