JPS625249Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improved structure of a spraying device for spraying liquid, paint, etc.

Typical spray devices of this type are shown in Figures 1 and 2.
As shown in the figure, an armature 3 is arranged on a solenoid coil 2 housed in a housing 1 to form an electromagnetic device, and a switch 5 is attached to a part of a grip 4 extending integrally from the housing 1 to By applying an alternating current voltage to the coil 2, the armature 3 can be moved in an arc with its upper part serving as a fulcrum, and the clip 4 can be
The cylinder 6 is attached to the housing 1 in a direction almost perpendicular to the cylinder 6.
The main body 7 in which is embedded is screwed and fixed with a set screw 8,
A piston 9 is inserted into and supported from the rear of the cylinder 6, and a spring 1 is attached between the cylinder 6 and the piston 9.
By springing the piston 9 to the spring 10
Due to the elastic action of the armature 3, it cooperates with the end of the armature 3 to enable reciprocating movement within the cylinder 6. Furthermore, a lid 11 is formed on the lower side of the housing 1 to form a container 12 for storing liquid, paint, etc. At the same time, an inlet 13 and an outlet 14 are formed from the cylinder 6 to the container 12, and a valve 15 that acts on the tip side of the cylinder 6 is tightly attached to the cylinder 6 side by the elastic action of a spring 16. The end threaded portion 1 of the main body 7 is formed and located on the distal end side of the cylinder 6.
A nozzle 18 is screwed and fixed to 7. Further, a suction pipe 19 is inserted into the suction port 13 and arranged so as to lead this suction pipe 19 to the bottom side of the container 12.

Further, a case 20 is formed to cover the electromagnetic device and other movable parts such as the piston 9, and the other portion 4A of the grip 4 formed in the housing 1 is formed continuously with the case 20.

Further, an adjustment knob 21 is screwed onto the case 20 and is configured to define the amplitude distance of the armature 3 and adjust the state of the liquid mist sprayed from the nozzle 18.

Therefore, the liquid, paint, etc. that is sprayed by the reciprocating movement of the armature 3 and the piston 9 by the solenoid coil 2 and the spring 10, that is, by the pumping action of the suction and compression strokes of the piston 9 within the cylinder 6, is sprayed into the container 12. The air is sucked into the cylinder 6 through the suction pipe 19, and as the piston 9 is compressed, the valve 15 resists the force of the spring 16 and opens the gap between it and the cylinder 6. It is configured so that it is injected from the hole.

By the way, if the ejection hole of the nozzle 18 becomes clogged, the spray condition will deteriorate, so the nozzle 18 may be removed and cleaned, or a nozzle 18 with a different hole diameter or a round nozzle 18 may be used depending on the purpose of use. There are cases where the blow nozzle 18 and the like are selected and replaced, and the nozzle 18 may be replaced frequently.

However, since the nozzle 18 itself is a small component, there is a problem in that it is difficult to operate with a fingertip. In addition, in order to make it easier to operate this small nozzle 18 with a fingertip, the nozzle 18 is press-fitted and fixed into a nozzle holder 22 which is generally made of synthetic resin, and the nozzle 18 can be attached and detached together with this nozzle holder 22. However, depending on the purpose of use, the nozzle 18 must be pulled out from the nozzle holder 22 and another nozzle 18 press-fitted and attached to the main body 7 side, so the nozzle 18 must be replaced with the nozzle holder 22 many times. If the nozzle holder 22 is press-fitted, the inner surface of the nozzle holder 22 will be scraped off.
The strength of the press-fit between the nozzle 18 is reduced and rattling may sometimes occur, and there is a problem in that rattling causes chattering noise due to vibration of the main body 7 during spraying operations.

Further, when the nozzle 18 is driven and press-fitted into the nozzle holder 22, there may be a problem that the nozzle holder 22 is cracked or damaged.

This idea solves the above problem.In order to simplify the operation of attaching and detaching the nozzle, a synthetic resin nozzle holder that can be attached and detached together with the nozzle is provided. An appropriate number of grooves are formed in the nozzle holder so that the nozzle can be easily crimped and fixed by utilizing the bending caused by the elastic force of the resin using the engaging portion of the nozzle holder, and the attachment and detachment operations can be easily performed. It was made so that it could be done.

An embodiment of this invention will be described in detail below based on the accompanying drawings.

FIGS. 3 and 4 show an embodiment of this invention, and the same or equivalent parts as in the conventional example described above will be described with the same reference numerals.

A nozzle 18 is screwed and fixed to an end threaded portion 17 of the main body 7 of the spraying device, and this nozzle 18 includes:
A nozzle holder 22 is assembled which makes the installation and removal of the nozzle easy.

The nozzle holder 22 is molded from synthetic resin, and a hole 23 having approximately the same shape and size as the nozzle 18 is formed in the center of the nozzle holder 22. An engaging portion 24 of the nozzle 18 is formed therewith.

Further, an annular operating portion 25 having a diameter larger than the outer dimensions of the nozzle 18 is formed continuously with the engaging portion 24 .

Further, a split groove 26 is formed in the engaging portion 24 along the axial direction thereof, and each of the engaging portions 24 divided by the split groove 26 is formed so that it can be bent by external application. has been done.

As configured above, the nozzle 18 screwed and fixed to the main body 7 of the spraying device is assembled and
A nozzle holder 22 is assembled that provides good operability such as removal, and the nozzle 18 can be easily rotated by rotating the operating part 25 formed on the nozzle holder 22. This allows the main body of the spray device to be easily rotated. 7 and can be easily attached and detached,
Maintenance management can be done quickly.

Further, the nozzle holder 22 is integrally formed with engaging portions 24 separated by grooves 26, and each engaging portion 24 is bent by external stress by utilizing the elasticity of the synthetic resin itself. It is formed to hold the nozzle 18 in a nozzle holder 22.
At the same time, the nozzle 18 can be held in an elastic state by the engaging parts 24, and the nozzle holder 22 and the nozzle 18 can be pressed and engaged at the same time.
The nozzle 18 can be strongly supported, and the nozzle 18 can be easily removed by manual operation against the force of this elastic force, and the nozzle 18 can be easily removed depending on the purpose of use. Easy to assemble and disassemble when changing models, etc.

Furthermore, when press-fitting and fixing the nozzle 18 to the nozzle holder 22, by bending the 24 engaging parts of the nozzle holder 22 in advance, breakage of the 24 engaging parts can be prevented, extending the service life of the parts. be able to.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional structural diagram of the main parts of the spray device, Figure 2 is an exploded perspective view showing the main parts of Figure 1,
FIG. 3 is a sectional view of a main part of an embodiment of the device of the present invention, and FIGS. 4A and 4B are exploded perspective views showing the main parts of FIG. 3. Housing...1, Solenoid coil...2,
Amachiyua...3, Grip...4, Switch...
...5, Cylinder...6, Body...7, Set screw...
...8, Piston...9, Spring...10, Lid body...
11. Container... 12. Inlet port... 13. Outlet port...
...14, Valve...15, Spring...16,
Thread part...17, Nozzle...18, Suction pipe...1
9, Case...20, Adjustment knob...21, Nozzle holder...22, Hole...23, Engagement part...2
4. Operation section...25, Dividing groove...26.

Claims (1)

[Scope of utility model claims] A spray device comprising a main body having a container and a pump mechanism, a spray nozzle screwed and fixed thereto, a nozzle holder attached to the nozzle, and liquid, paint, etc. in the container being sucked up by the pump action and sprayed from the nozzle, the nozzle holder being made of a synthetic resin material, the nozzle holder having a hole in its center that is approximately the same diameter and size as the nozzle, an engagement part being formed by a raised wall around the hole, an operating part being integrally formed with the engagement part and having a diameter larger than the outer dimensions of the nozzle, a split groove being provided along the axial direction of the engagement part, and when the nozzle is pressed into the hole, each of the engagement parts divided by the split groove is brought into a resilient state to press and hold the nozzle.