JPH0248064Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention uses a spraying device, in particular, a piston that is moved reciprocatingly within a cylinder by a driving means, and the pumping action of this reciprocating motion is used to spray water, paint, and disinfectant in a container. This invention relates to a spraying device that suctions a liquid into a cylinder through a suction hose, discharges it to the outside of the cylinder and sprays it, and returns the remaining liquid inside the cylinder into a container through a discharge hose.

[Related technologies and their problems]

As shown in FIG. 4, a general spraying device of this type includes an armature 3 of a solenoid coil 2 disposed in a housing 1 to form an electromagnetic device, and a part of a grip 4 integrally extending downwardly from the housing 1. By attaching a switch 5 to the armature 3 and applying an alternating current voltage to the solenoid coil 2,
The cylinder 6 is buried in the housing 1 in a direction substantially orthogonal to the grip 4, and the cylinder 6
A piston 7 is inserted into and supported from the rear of the cylinder 6, and a spring 8 is elastically installed between the cylinder 6 and the piston 7, so that the piston 7 moves together with the end of the armature 3 by the elastic action of the spring 8. A valve 9 that enables reciprocating movement within the cylinder 6 and acts on the tip side of the cylinder 6 is formed in close contact with the cylinder 6 side by the elastic action of a spring 10, and an end threaded portion located on the tip side of the cylinder 6. Nozzle 1 on 11
2 is fixed with screws. A cover 13 is formed on the lower side of the housing 1, and an inlet 14 and an outlet 15 are formed in the cylinder 6 and the cover 13, respectively, forming the main body of the sprayer. Generally, a container (not shown) is attached to the cover 13, and the liquid in the container is sucked in from the suction port 14 through a suction pipe (not shown), and is atomized by the forward movement of the piston 7 in the cylinder 6. That's what I do. Incidentally, there are cases where the main body of the sprayer and the container containing the liquid are used separately and connected by a hose. In this case, the upper connecting portions 17, 17a of the connecting pipes 16, 16a, which are integrally formed with each other, are inserted into the suction port 14 and the outlet port 15, and the lower connecting portion 1
8, 18a have a suction hose 19 and a discharge hose 20
is connected. The ends of the suction hose 19 and the discharge hose 20 are located in a container 22 containing a liquid 21, and the end of the suction hose 19 is provided with a strainer 23.
is provided. Furthermore, a case 24 is provided to cover the electromagnetic device and movable parts such as the piston 7.
is formed, and this case 24 continuously forms the other side of the grip 4 formed on the housing 1. Further, an adjustment knob 25 is screwed onto the case 24 to define the amplitude distance of the armature 3 and to adjust the state of the mist of the liquid 21 sprayed from the nozzle 12.

Therefore, the liquid 21 is sprayed by the reciprocating movement of the armature 3 and the piston 7 by the solenoid coil 2 and the spring 8, that is, by the pump action by the suction and compression strokes of the piston 7 within the cylinder 6.
is sucked into the cylinder 6 from the container 22 through the suction hose 19, the connecting pipe 16 and the suction port 14, and as the piston 7 is compressed, the valve 9 is compressed by the spring 10.
Resisting the force, the gap between the cylinder 6 and the cylinder 6 is opened, and the liquid passes through the gap and is further jetted from the nozzle 12 through the spout hole, and the remaining liquid in the cylinder 6 connects the discharge port 15, the connecting pipe 16a, and the discharge hose 20. It is discharged into the container 22.

By the way, in the case where the liquid 21 is sucked up from the container 22 by using the vibration of a solenoid as described above, the sprayer itself vibrates finely, so it is necessary to make it possible to attach and detach the suction hose 19, the connecting pipe 16, etc. It is important to form a certain part so that it does not loosen due to vibration, especially if the connection pipe 16 on the suction hose 19 side loosens, the suction port 14
This causes a problem in which suction of the liquid 21 becomes insufficient or difficult.

However, the conventional spraying device of this type has a connection pipe 16 for the suction hose 19 and a connection pipe 16 for the discharge hose 20.
Since the connecting pipes 16 and a are integrally formed, the connecting pipes 16,
16a must be inserted simultaneously and linearly toward two points in the center of the suction port 14 and the discharge port 15, which makes rotational movement difficult, and the connection between the suction port 14 and the connecting pipe 16 is difficult. It has the aspect that the condition tends to be insufficient.

[Purpose of the invention] An object of the invention is to provide a spray device in which the connection between the suction port and the suction hose side connection pipe is simple and reliable.

[Summary of the invention] The spraying device of the present invention has a suction side connecting pipe that connects the suction hose to the sprayer main body, and a discharge side that is formed separately from the suction side connecting pipe and connects the discharge hose to the sprayer main body. A connecting pipe, and a hook-shaped connecting part that is provided integrally with the suction-side connecting pipe and can engage and hold the discharge-side connecting pipe, and the suction-side connecting pipe is rotated by gripping the hook-shaped connecting part. The suction side connection pipe and the discharge side connection pipe can be integrally connected by inserting the suction port into the suction port and engaging and holding the hook-shaped connecting portion with the discharge side connection pipe.

[Embodiment] To explain with reference to FIGS. 1, 2, and 3 using the same reference numerals for the same parts as in FIG. The inner circumferential surface of the inlet 14 of the cover 13 is formed with a tapered surface whose diameter increases downwardly, and the inner circumferential surface of the discharge port 15 is formed with a vertical surface. Reference numeral 26 designates a suction side connecting pipe, in which an upper connecting part 27 is formed above the center with a tapered surface whose outer circumferential surface becomes smaller in diameter as the outer circumferential surface faces upward, and an upper connecting part 27 with a tapered surface whose outer circumferential surface becomes smaller as the outer circumferential surface faces downward from the center. A lower connecting portion 28 is formed to have a tapered surface with a smaller diameter. A horizontally flat hook-shaped connecting part 29 is integrally formed in the center of the suction side connecting pipe 26, and a hook-shaped groove 30 of the hook-shaped connecting part 29 has a hook-shaped groove 30 that allows the suction side connecting pipe 26 to rotate horizontally. The side portion is open so that it can be engaged with a separately formed discharge side connecting pipe 26a. The discharge side connecting pipe 26a has an upper connecting part 27a whose outer circumferential surface becomes smaller in diameter as it goes upward, and a lower connecting part 28a whose outer circumferential surface is a vertical surface with the same diameter. An engaging protrusion 31 is located directly above the hook-shaped connecting portion 29.
is formed, and this engaging protrusion 31 and the hook-shaped connecting portion 29
The discharge side connecting pipe 26a is formed to be able to be prevented from being pulled out by engagement with the discharge side connecting pipe 26a.

Therefore, the suction side connecting pipe 26 formed independently of the discharge side connecting pipe 26a can be press-inserted toward one point in the center of the tapered suction port 14 while giving appropriate rotation. It is possible to grip the hook-shaped connecting portion 29 integrally formed with the suction side connecting pipe 26 and perform a reliable rotational insertion operation. Furthermore, by inserting the suction side connecting pipe 26 after inserting the discharge side connecting pipe 26a into the discharge port 15, it is possible to rotate and insert the suction side connecting pipe 26 while simultaneously attaching the suction side connecting pipe 26 to the discharge side connecting pipe 26a. The assembly workability is good, and the engagement between the hook-shaped connecting portion 29 and the engaging protrusion 31 allows the discharge side connecting pipe 26
In addition, if the upper ends of the suction hose 19 and the discharge hose 20 are branched, the branched portion is connected between the two connecting pipes 26 and 26a by the hook-shaped connecting portion 29. Both hoses 1
A strong connection force can be obtained between 9, 20 and both connecting pipes 26, 26a. Moreover, on the suction side connection part 26,
Since the lower connecting portions 27 and 28 can be manufactured in a symmetrical shape, the manufacturing efficiency and assembly workability are good. Further, it is preferable that the engaging projections 31 formed on the discharge side connecting pipe 26a are located directly above the engaging position of the hook-shaped connecting portion 29, but they may be provided at appropriate intervals.

[Effect of idea]

This invention consists of a suction side connection pipe that connects the suction hose to the sprayer body, a discharge side connection pipe that is formed separately from the suction side connection pipe and connects the discharge hose to the sprayer body, and the suction side connection. Since it is provided with a hook-shaped connecting part that is provided integrally with the pipe and can engage and hold the discharge side connecting pipe, it is possible to press-insert it toward the center of the suction port while gripping and rotating the hook-shaped connecting part. At the same time, since the hook-shaped connecting part can be engaged and held with the discharge side connecting pipe, the assembly workability is good and loosening due to vibration can be prevented, which is highly effective.

[Brief explanation of the drawing]

FIG. 1 is a sectional view, FIG. 2 is an exploded perspective view, FIG. 3 is a sectional view showing an operating state, and FIG. 4 is a conventional sectional view. 6...Cylinder, 7...Piston, 19...Suction hose, 20...Discharge hose, 21...Liquid,
22... Container, 26... Suction side connection pipe, 26a...
...Discharge side connection pipe, 29...Hook-shaped connection part.

Claims (1)

[Scope of utility model registration request] A sprayer main body that reciprocates a piston within a cylinder by a driving means, sucks liquid into the cylinder by a pump action caused by this reciprocating movement, and sprays it out of the cylinder, and sucks up liquid in a container by the pump action. a suction hose for returning liquid remaining due to the reciprocating movement of the piston into the container, and a connecting pipe for connecting the suction hose and the discharge hose to the sprayer main body. In the spraying device, a suction-side connecting pipe that connects the suction hose to the sprayer main body, a discharge-side connecting pipe that is formed separately from the suction-side connecting pipe and connects the discharge hose to the sprayer main body, and the above-mentioned A spray device comprising: a hook-shaped connecting portion that is provided integrally with a suction side connecting pipe and capable of engaging and holding the discharge side connecting pipe.