JPH0248069Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention relates to an electric spray device for spraying liquids such as water and paint, and in particular improves the fixing structure of a push button switch that operates an electromagnetic drive unit. Regarding.

[Related technologies and their problems]

This type of spray device will be explained with reference to FIG.
Reference numeral 1 designates a main body housing to which an electromagnetic drive unit 2 is attached and fixed.A grip 3 is formed on this main body housing 1 and hangs downward from its rear end, and a push button type switch 4 is provided on this grip 3. By operating the switch 4, an AC voltage is applied to the solenoid coil 2A of the electromagnetic drive section 2, thereby making the movable section 2B formed in the electromagnetic drive section 2 swingable back and forth. 1
Reference numeral A denotes a pump housing fixed to the front side of the main body housing 1 with a set screw 5, and a cylinder 6 is arranged in the front-rear direction within this pump housing 1A. 7 is a piston inserted from the rear of the cylinder 6;
A coil spring 8 is interposed between the piston 7 and the piston 7, and the piston 7 is moved into the cylinder 6 by the reciprocating action caused by the excitation applied to the electromagnetic drive unit 2 and the elastic force of the coil spring 8.
It is formed to be able to reciprocate within the body. A lid 9 is integrally formed on the lower end side of the pump housing 1A, and a container 10 for storing water, paint, etc. is suspended by a threaded portion 11. 12 is a suction hole formed in the pump housing 1A and the lid 9, and 13 is a discharge hole similarly formed.The upper end of the suction pipe 14 is inserted into the suction hole 12 of the lid 9, and the suction pipe 14
A strainer 15 is arranged so as to surround the suction port. A nozzle holder 16 is screwed onto the tip of the pump housing 1A to hold the valve 17, coil spring 18, and nozzle 19 arranged at the tip of the pump housing 1A. 1B is a housing cover that covers the electromagnetic drive section 2 and the like, and this housing cover 1B is fixed to the main body housing 1 with screws 20. 21
is an adjuster screwed onto the main body housing 1 via a coil spring 22, and depending on the degree of screwing of this adjuster 21, a movable part is formed in the electromagnetic drive part 2 between the tip of the adjuster 21 and the locking part 23. The swing width of 2B is adjustable.

Therefore, due to the excitation of the electromagnetic drive unit 2, the electromagnetic drive unit 2 is activated within the distance between the adjuster 21 and the locking portion 23.
The piston 7 reciprocates within the cylinder 6 in conjunction with the operation of the movable portion 2B and the coil spring 8 for the spring action, and the reciprocating movement of the piston 7 causes suction - Due to the compression process, liquid such as water or paint in the container 10 is sucked into the cylinder 6 through the suction pipe 14, and as the piston 7 is compressed, the valve 17 provided at the open end of the cylinder 6 is activated by the coil spring 18. The gap between the valve 17 and the cylinder 6 is opened against the force of the cylinder 6, and liquid such as water or paint that has passed through the gap between the open end of the cylinder 6 and the valve 17 is sprayed from the injection hole of the nozzle 19.

By the way, as shown in FIG.
The push button 4D is inserted from the recess 24 side on the front side through the nut 4C, and the nut 4C is tightened and fixed to the holder 4A. However, this requires a special tool to tighten and fix the nut 4C, and the assembly work using that tool is time-consuming.

In order to eliminate the assembly work using such special tools, the switch body 4B is placed from the rear side of the upper end of the grip 3 of the main body housing 1 as shown in FIG.
It has been proposed that a clamp plate 4E for fixing the grip 3 is fixed to the main body housing 1 with screws 4F, and a push button 4D is inserted into the recess 24 on the front side of the upper end of the grip 3 for assembly. but,
This also has the disadvantage that it takes time and effort to assemble the switch body 4B because it requires a screwdriver to fix the switch body 4B via the clamp plate 4E.

[Purpose of invention]

The object of the present invention is to provide a switch fixing device for a spray device that allows the switch to be easily assembled without using tools.

[Summary of the idea]

In the present invention, an electromagnetic device, a pump device, and a switch are arranged on the main body side, and the switch is actuated by pressing a button to drive the electromagnetic device, and the pumping action of the pump device is operated in conjunction with the electromagnetic device. In an electric spraying device that sucks liquid in a container and sprays it from a nozzle, an elastic support member into which the switch is inserted is provided in the main body housing in which the push button is disposed, and the switch is inserted into the elastic support member. The reason is that a protrusion for preventing removal is formed.

[Example of idea]

Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 4, using the same reference numerals for the same parts as in FIG. 5.

1 and 2 show a first embodiment, in which a push button 4 is provided on the front side of the upper end of the grip 3 of the main body housing 1.
A recess 24 for insertion is formed in the recess 24, and a hole 26 is formed in the vertical wall 25 of the recess 24, through which the actuating piece 4G of the switch body 4B is inserted. On the rear side of the upper end of the grip 3 of the main body housing 1 are located above and below the hole 26, and on the switch main body 4B.
Support members 27 and 27A that support the lower wall portion are integrally formed to protrude, and elastic support members 28 and 28A that support the left and right wall portions of the switch body 4B are integrally formed to protrude from the left and right sides of the hole 26. has been done. In this case, projections 29 are formed at the tips of the elastic support members 28 and 28A, respectively, to engage with the rear surface of the switch body 4B and prevent the switch body 4B from coming off to the rear side. Projections 30 are formed on both sides to engage with the side surfaces of the switch body 4B to prevent the switch body 4B from shifting laterally. Thus, the support members 27, 27A, 28, 2
When the switch body 4B is press-fitted between the holes 26 and 8A, the elastic support members 28 and 28A are elastically deformed to allow the switch body 4B to be inserted, and when the operating piece 4G of the switch body 4B is inserted into the hole 26 and reaches the fixed position, The protrusions 29 of the support members 28, 28A are connected to the switch body 4.
It locks on the rear surface of B. Next, the push button 4D is inserted into the recess 24 from the front side of the main body housing 1 and assembled. In this way, in the above embodiment, the switch body 4B and the push button 4D can be easily inserted and fixed without using any tools, and when the push button 4D is operated, the switch body 4B is attached to the support members 27, 27A, 28, 28.
It is stabilized by A. Further, although a type in which the switch body 4B is covered by the housing cover 1B is shown, the switch can be assembled in a stable state even in a type without the housing cover 1B.

3 and 4 show a second embodiment, in which a grip 3 of the main body housing 1 has a grip 3 located above and below the hole 26 on the rear side of the upper end to support the upper and lower walls of the switch main body 4B. Elastic support member 2 with protrusion 29
8 and 28A are integrally formed to protrude, and support members 27 and 27A with protrusions 30 that support the left and right walls of the switch body 4B are integrally formed to protrude from the left and right sides of the hole 26. Also, housing cover 1
A protrusion 31 for preventing the switch body 4B from coming off toward the rear side is formed on the inner surface of the switch body 4B. Therefore, the support members 27, 27A, 28 of the main body housing 1,
When the switch body 4B is press-fitted between the holes 28A, the switch body 4B is fixed in a fixed position as in the above embodiment. Further, the push button 4D is also inserted and fixed into the recess 24. In this way, also in the above embodiment, the switch body 4B and the push button 4D can be easily inserted and fixed without using any tools, and when the push button 4D is operated, the switch body 4B can be inserted into the support members 27, 27A, 28, 2
Stable by 8A. Furthermore, the switch body 4B is prevented from coming off by the retaining protrusion 31 of the housing cover 1B even if the protrusion 29 is not present.

Note that the present invention is not limited to the above embodiments, and various modifications can be made within the scope of the gist of the present invention. For example, in the above embodiment, the support members 27, 27A are provided with protrusions 30 that engage with the side surfaces of the switch body 4B, and the elastic support members 28, 28
A protrusion 29 that engages with the rear surface of the switch body 4B
Although the elastic support members 28, 28A with protrusions 29 may be provided on all sides, or the protrusions 30 may not be provided.

[Effect of idea]

In the present invention, an elastic support member for inserting the switch is provided in the main body housing in which the push button is disposed, and a protrusion for preventing the switch from coming off is formed on this elastic support member, so that the switch can be assembled without using tools. It can be fixed easily and has great effects.

[Brief explanation of the drawing]

1 and 2 show a first embodiment of the present invention,
Figure 1 is a vertical sectional view showing the switch structure of the spray device, Figure 2 is an exploded perspective view of Figure 1, Figures 3 and 4.
The figure shows the second embodiment, FIG. 3 is a vertical sectional view showing the switch structure of the spray device, FIG. 4 is an exploded perspective view of FIG. 3, and FIG. 5 is a conventional spray device and a spray device used in the present invention. 6 and 7 are cross-sectional views showing the main parts of a conventional switch structure. 1...Body housing, 1A...Pump housing, 2...Electromagnetic drive section, 4...Switch, 4B
...Switch body, 4D...Push button, 28, 28A
...Elastic support member, 29...Protrusion.

Claims (1)

[Scope of utility model registration request] An electromagnetic device, a pump device, and a switch are arranged on the main body side, and the switch is actuated by pressing a button to drive the electromagnetic device. In an electric spraying device that sucks liquid and sprays it from a nozzle, the main body housing in which the push button is disposed is provided with an elastic support member into which the switch is inserted, and the elastic support member is provided with a mechanism to prevent the switch from coming off. A switch fixing device for an electric spray device, characterized in that a protrusion is formed.