JPH03104B2 - - Google Patents

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to an electric spray device for spraying liquids such as water and paint, and particularly in an electric spray device with a removable pump housing, an electromagnetic device and a pump are used. The present invention relates to a structure for increasing assembly accuracy of a device.

[Related technologies and their problems]

To explain this type of general electric spraying device with reference to FIGS. 8 and 9, 1 is a main body housing, which has a cylindrical part 1A extending in the horizontal direction, and a pump on the front side of this cylindrical part 1A. The fixing part 3 of the device 2 is formed in an inverted U shape, a fixing wall 5 of the electromagnetic device 4 is erected at the upper part of the center, and a grip 6 is hung down at the lower part of the rear side, so that the whole unit is almost like a pistol. It has a shape. In the electromagnetic device 4, an E-shaped fixed core 4A is attached to a bobbin 4C around which a solenoid coil 4B is wound. It is attached. Reference numeral 7 denotes an armature disposed on the fixed core 4A so as to be swingable by a spring 8. By applying an alternating current voltage to the electromagnetic device 4 by operating a switch 9 provided on the grip 6, the armature 7 can be moved upwardly. It is made to be able to swing back and forth in the front and back directions about the fulcrum 10. Reference numeral 11 designates a pump housing in which a cylinder 12 is buried, and a lid 1 on the bottom of which a container 13 is screwed and suspended.
4 is integrally formed, and a guide cylinder part 16 is formed protruding from the upper side of the pump housing 11 to be inserted into a receiving hole 15 formed in the fixing part 3 of the main body housing 1, and this guide cylinder part 16 has a threaded part. 17 are provided. Further, a suction hole 18 and a discharge hole 1 are formed in the cylinder 12 at approximately the center of the lid body 14.
Cylindrical portion 2 having holes 18A and 19A communicating with 9, respectively.
0 is formed, and the hole 18A has a strainer 2 at its tip.
1 is inserted into the suction pipe 22. A piston 24 is inserted into the cylinder 12 via a spring 23 loosely inserted from the rear side, and in this state, the pump housing 1
1 is assembled to the fixed part 3 of the main body housing 1, and the guide cylinder part 16 of the pump housing 11 is attached to the receiving hole 15.
The fixing screw 25 is screwed onto the threaded portion 17 from above in a state in which the pump housing 11 is suspended and fixed. In this case, the lid 14 is provided with a protrusion 26 that engages with the end of the cylindrical portion 1A of the main body housing 1 to facilitate assembly of the pump housing 11. 27 is a protective cover in which a nozzle nut 29 is fixed to a sleeve 28 at the base, and a valve 30, a spring 31, and a swirl head 32 are arranged on the tip side of the pump housing 11, and a threaded part 29A provided on the nozzle 29 is attached to the pump housing. 1
It is screwed onto the tip of 1. 1B is a housing cover that covers the electromagnetic device 4 and the like, and is fixed to the main body housing 1 with screws 33. Reference numeral 34 denotes an adjuster in which a spring 35 is loosely inserted and screwed into the main body housing 1. Depending on the degree of screwing of this adjuster 34, the armature 7 between the tip of the adjuster 34 and the engaging portion 36 provided on the main body housing 1 is adjusted. The swing width is adjustable.

Therefore, due to the excitation of the electromagnetic device 4, the regulator 34
The armature 7 reciprocates within the distance between the armature 7 and the engaging portion 36, and the piston 24 reciprocates within the cylinder 12 in conjunction with the operation of the armature 7 and the spring 23, and the piston 24 reciprocates. The liquid in the container 13 is sucked into the cylinder 12 from the suction hole 18 through the suction pipe 22 through the suction/compression process due to the movement, and as the piston 24 is compressed, the valve 30 provided at the open end of the cylinder 12 is activated by the spring. 31 and the cylinder 12 is opened, and the liquid passing through the gap between the open end of the cylinder 12 and the valve 30 passes through the swirl head 32 and from the nozzle injection hole 29B provided in the nozzle 29. Sprayed.

By the way, in the electric spraying device with a removable pump housing as described above, there is a tendency for variations to occur in the assembly positional relationship between the electromagnetic device 4 and the pump device 2, which affects the spraying performance. This has the problem of causing errors in the corresponding positional relationship, which tends to have a negative effect on the suction and spraying of liquids.In particular, in the case of synthetic resin body housings used to reduce weight, when molding There is a problem in that dimensional accuracy is affected by deformation of the synthetic resin or expansion/contraction due to temperature changes.

To solve this problem, a U-shaped bridge made of bent thin plate is used to hold the pump casing on top of the board, and this bridge rises from the connecting board approximately in the center. The stator of the AC vibrating magnet connected to both plates is received between the two side plates, and the board at the front part of the bridge is provided with holes or stops, screws, pins, plug-like protrusions, or the like. and for the reception of the adjusting screw acting on the armatures of the alternating current vibration magnets of the tongues facing rearward and facing each other in the side plates of the thin plate bridge. The spray gun is specially designed for
It is known from Publication No. 58-21537.

However, in the above method, the pump housing is assembled and fixed on the upper part of the bridge base plate, so a complicated structure is required to connect the lid for container attachment to the bridge. It is necessary to attach and detach the parts, which tends to complicate assembly and replacement work.

[Purpose of the invention]

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an electric spraying device that can improve the accuracy of the assembly positions of the electromagnetic device and the pump device, and also allows easy attachment and detachment of the pump device. .

[Summary of the invention]

In the present invention, an electromagnetic device is disposed at the upper rear side of the main body housing, a pump device is disposed at the lower front side, and a protrusion formed at the upper part of the pump housing of the pump device is inserted downward into the receiving hole provided in the main body housing. In the electric spray device, the pump housing is inserted into the electric spray device and fixed by a fixing device, and the liquid in the container is suctioned and sprayed from the nozzle by the pumping action of the pump device operated in conjunction with the electromagnetic device. A frame body is provided in which a fixed part of the pump housing having a positioning hole into which the protrusion is inserted and a fixed part of the E-shaped fixed core of the electromagnetic device are integrally formed,
This frame body is attached to the main body housing.

[Embodiments of the invention]

Hereinafter, embodiments of the present invention will be described using the same reference numerals for the same parts as in FIGS. 8 and 9.

1 to 4 show a first embodiment of the present invention, and show a frame 41 which is a reference item for assembling an electromagnetic device 4 and a pump device 2.
As shown in FIGS. 2 to 4, the receiving plate portion 4 is located on the flat upper surface of the cylindrical portion 1A of the main housing 1.
2, a vertical wall portion 43 located on the inner surface of the fixed wall 5 of the electromagnetic device 4, and a fixed receiving plate portion 44 located on the lower surface of the fixed portion 3 of the pump device 2 are integrally formed in a T-shape. The fixed receiving plate part 44 has a positioning hole 45 which is smaller in diameter than the receiving hole 15 and has a hook hole 45A at the front end, corresponding to the receiving hole 15 provided in the fixed part 3.
The guide cylinder part 16 of the pump housing 11 is inserted from below into the receiving hole 15 and its positioning hole 45, and the hook part 46 formed protruding from the front end of the guide cylinder part 16 is inserted into the hook hole. 45A, insert the fixing screw 25 from above into the guide cylinder part 1.
The pump housing 11 is suspended and fixed to the lower part of the fixed receiving plate part 44 which is screwed onto the threaded part 17 of 6 and arranged on the lower surface side of the fixed part 3. Further, the vertical wall portion 43
is integrally formed with a protrusion 48 that fits into a hole 47 provided in the fixed wall 5, and in this embodiment, the flat surface of the protrusion 48 and a heat sink 49 disposed outside the fixed wall 5 are in contact with each other. The heat dissipation plate 49 is fixed by the fixing portion 50. Further, left and right side plates 51 are continuously formed on the inner side of the vertical wall portion 43 and on the upper side of the receiving plate portion 42, respectively, and the E-shaped fixed core 4A is fitted and fixed into the side plates 51, and the main body housing 1 The side wall 52, the side plate 51, and the fixed iron core 4A are integrally fixed by a fastening portion 53.

Therefore, the pump housing 11 is fixed with the fixing screw 2.
5, the container 13 can be separated downward from the main body housing 1 with the container 13 attached to the lid 14, and the guide tube 16 of the pump housing 11 can be positioned with the receiving hole 15 even during assembly. Insert into the hole 45 from below, and hook part 4
6 is locked in the hook hole 45A, and by screwing the fixing screw 25 into the threaded part 17 of the guide tube part 16, the electromagnetic device 4 can be positioned in an accurate corresponding position with respect to the electromagnetic device 4 set by the frame body 41. The pump housing 11 can be fixed.

5 and 6 show the second embodiment;
The figure shows a frame 41A, which is a reference product for assembling the electromagnetic device 4 and the pump device 2.
is the cylindrical part 1 of the main body housing 1 as in FIG.
A receiving plate part 42 located on the upper flat part of A, and a vertical wall part 43 located on the inner surface of the fixed wall 5 of the electromagnetic device 4
A fixed receiving plate portion 44 located on the lower surface of the fixed portion 3 of the pump device 2 is integrally formed in a T-shape. The fixed receiving plate part 44 is formed with a positioning hole 45 having a smaller diameter than the receiving hole 15 and having a hook hole 45A at the front end, corresponding to the receiving hole 15 provided in the fixed part 3, and extending downwardly on both sides. The side wall 54 is continuously formed, and the receiving hole 15 and its positioning hole 45
The guide cylinder part 16 of the pump housing 11 is inserted from below.
and locks the hook portion 46 formed protrudingly at the front end of the guide tube portion 16 into the hook hole 45A, and attaches the fixed receiving plate portion 44 of substantially the same shape to the inverted U-shaped fixing portion 3.
When the screws 25 are fitted, the fixing screw 25 is screwed into the threaded part 17 of the guide cylinder part 16 from above, and the pump housing 11 is suspended and fixed to the lower part of the fixed receiving plate part 44 arranged on the lower surface side of the fixing part 3. are doing. Further, a fixed iron core 4A and a heat dissipation plate 49 are arranged on the vertical wall portion 43 as in the above embodiment.

Therefore, the pump housing 11 is fixed with the fixing screw 2.
5, the container 13 can be separated downward from the main body housing 1 with the container 13 attached to the lid 14, and the guide tube 16 of the pump housing 11 can be positioned with the receiving hole 15 even during assembly. Insert into the hole 45 from below, and hook part 4
6 is locked in the hook hole 45A, and by screwing the fixing screw 25 into the threaded part 17 of the guide tube part 16, the electromagnetic device 4 can be positioned in an accurate corresponding position with respect to the electromagnetic device 4 set by the frame body 41. The pump housing 11 can be fixed, and in addition, since the inverted U-shaped fixed receiving plate part 44 is fitted to the U-shaped fixed part 3, in the case of the main body housing 1 made of synthetic resin, the inverted U-shaped fixing plate part 44 is fitted. The left and right side walls 54 of the letter-shaped fixed receiving plate portion 44 can reinforce the side wall portion 3A of the fixed portion 3.

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, although the positioning hole is shown as having a hook hole, the shape thereof may be changed as appropriate, and the hook hole may not be provided. Further, although a type with a heat sink is shown, a type without a heat sink may also be used. Furthermore, although the fixing device for the pump housing is shown to be a screw type, as shown in FIG. Engagement part 5
It may be bayonet connected to the recess 60 with 9, and the fixing means may be selected as appropriate. Further, the frame may be formed by bending a metal plate or may be formed integrally. Further, the frame body may be assembled and fixed to the main body housing, or may be integrally formed by insert molding.

〔Effect of the invention〕

In the present invention, an electromagnetic device is disposed at the upper rear side of the main body housing, a pump device is disposed at the lower front side, and a protrusion formed at the upper part of the pump housing of the pump device is inserted downward into the receiving hole provided in the main body housing. In the electric spray device, the pump housing is inserted into the electric spray device and fixed by a fixing device, and the liquid in the container is suctioned and sprayed from the nozzle by the pumping action of the pump device operated in conjunction with the electromagnetic device. A frame body is provided in which a fixed part of the pump housing having a positioning hole into which the protrusion is inserted and a fixed part of the E-shaped fixed core of the electromagnetic device are integrally formed,
Since this frame is attached to the main body housing, it is possible to improve the accuracy of the movement range of the piston with respect to the assembly position of the electromagnetic device and the pump device, especially the suction hole of the cylinder, and to easily attach and detach the pump device. It is an electric spraying device, and its effects are great.

[Brief explanation of the drawing]

1 to 4 show a first embodiment of the present invention,
Fig. 1 is a perspective view of a frame which is a main part of the spray device of the present invention, Fig. 2 is a sectional view showing a state in which an electric device and a pump device are assembled using the frame shown in Fig. 1, and Fig. 3
The figure shows a sectional view taken along the line A-A in FIG. 2, FIG. 4 shows a sectional view taken along the line B-B in FIG. 2, FIGS. 5 and 6 show the second embodiment, and FIG. Fig. 6 is a perspective view of the frame which is the main part of the spray device, Fig. 6 is a sectional view showing the state in which the electric device and pump device are assembled using the frame shown in Fig. 5, and Fig. 7 is a diagram showing the state in which the pump housing is attached to the main body housing. A perspective view of the essential parts of the spray device of the present invention showing the case where it is installed using a fixing device by bayonet connection, FIG. 8 is a cross-sectional view of a conventional electric spray device and an electric spray device used in an embodiment of the present invention, and FIG. 9 is a conventional FIG. 2 is an exploded perspective view showing the main parts of the device. 1... Main body housing, 2... Pump device, 3
... fixed part, 4 ... electromagnetic device, 4A ... E-shaped fixed core, 5 ... fixed wall, 7 ... amateur, 15
... Receiving hole, 16 ... Guide cylinder part, 25 ... Fixing screw, 41, 41A ... Frame body, 42 ... Receive plate part, 4
3... Vertical wall part, 44... Fixed receiving plate part, 45...
Positioning hole.

Claims (1)

[Claims] 1 An electromagnetic device is arranged at the upper rear side of the main body housing, a pump device is arranged at the lower front side, and the protrusion formed at the upper part of the pump housing of this pump device is inserted from below into the receiving hole provided in the main body housing. In the electric spraying device, the liquid in the container is sucked and sprayed from the nozzle by the pumping action of the pumping device that operates in conjunction with the electromagnetic device. A frame body is provided in which a fixed part of the pump housing having a positioning hole into which the part is inserted and a fixed part of the E-shaped fixed core of the electromagnetic device are integrally formed, and this frame body is attached to the main body housing. Electric spray device.