JPH0248068Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an electric spraying device for spraying liquids such as water and paint, and in particular, the invention relates to an electric spraying device for spraying liquids such as water and paint. The present invention relates to an improvement in the mounting structure of a locking member that buffers shocks caused by movement.

[Related technologies and their problems]

A general spraying device will be explained with reference to Fig. 3.
Reference numeral 1 denotes a main body housing to which the electromagnetic drive section 2 is fixedly attached.A grip 3 is formed on the main body housing 1 and extends downward from its rear end.A switch 4 is provided on this grip 3. By applying an alternating current voltage to the electromagnetic drive unit 2 through the operation of the switch 4, the electromagnetic drive unit 2
The movable part formed in the front and back directions can be reciprocated. Reference numeral 1a 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 the above cylinder 6
A coil spring 8 is interposed between the cylinder 6 and the piston 7, and the piston 7 is moved by the reciprocating action due to the excitation applied to the electromagnetic drive unit 2 and the elastic force of the coil spring 8. is formed in the cylinder 6 so as to be able to reciprocate. Reference numeral 9 denotes a lid integrally formed on the lower end side of the pump housing 1a, and a container 1 for storing water, paint, etc.
0 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 is opened. A strainer 15 is arranged to surround the 14 inlets. Reference numeral 16 denotes a nozzle holder, which includes a valve 17, a coil spring 18, and the nozzle 1 arranged at the tip side of the pump housing 1a.
9 is screwed onto the tip of the pump housing 1a so as to hold it. 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. Reference numeral 21 denotes an adjuster screwed onto the main body housing 1 via a coil spring 22, and depending on the degree of screwing of the adjuster 21, a material such as urethane rubber or the like is placed between the tip of the adjuster 21 and the fitting recess 1c of the main body housing 1. The electromagnetic drive unit 2 between the locking members 23 of
Adjustably regulates the swing width of the movable part formed in the

Therefore, the movable part that constitutes a part of the electromagnetic drive part 2 operates within the distance between the adjuster 21 and the locking member 23 by the excitation of the electromagnetic drive part 2, and the operation of this movable part and the coil spring 8 The piston 7 reciprocates within the cylinder 6 in connection with the bombardment, and the suction/compression process caused by the reciprocating movement of the piston 7 causes liquid such as water or paint in the container 10 to flow into the suction pipe 14.
is sucked into the cylinder 6 through the piston 7, and as the piston 7 is compressed, the valve 17 provided at the open end of the cylinder 6 resists the force of the coil spring 18 and is sucked into the cylinder 6.
The gap between the open end of the cylinder 6 and the valve 17 is opened, 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.

To be more specific, the electromagnetic drive unit 2 has a fixed iron core 30 formed by laminating a large number of thin iron plates and fixing them with pins 31, and a bobbin 33 around which a solenoid coil 32 is wound is inserted into the fixed iron core 30. , a movable core 35 made of a number of laminated iron plates is disposed opposite to this fixed core 30, and this movable core 35
A plate spring 36 is latched and held at approximately the central position of the fixed iron core 30 and the upper end central position of the fixed iron core 30, and the suction action of the fixed iron core 30 generated by the excitation of the solenoid coil 32 and the spring action of the plate spring 36 The movable iron core 35 is formed to swing back and forth. In this case, since the reciprocating motion of the movable core 35 is very high speed, the impact of the movable core 35 causes the locking member 2 to
3 gradually wears out, and as a result, the movement range of the reciprocating distance of the piston 7 fluctuates, resulting in a problem that the pump action due to suction and compression is reduced.

Therefore, the worn locking member 23 is replaced each time after removing the housing cover 1b, then removing the leaf spring 36, and then removing the movable core 35. The locking member 23 is press-fitted into the fitting recess 1c, and when removing the worn locking member 23 from the fitting recess 1c using a jig such as a screwdriver, there is a problem in the workability.

[Purpose of invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a spray device in which a locking member worn out due to impact of a movable core that constitutes a part of an electromagnetic drive unit can be easily removed and replaced.

[Summary of the idea]

In this invention, a bobbin around which a solenoid coil is wound is attached to a fixed iron core, and a movable iron core is provided opposite to the fixed iron core so as to be swingable by a leaf spring to form an electromagnetic drive section, and this electromagnetic drive section is used to spray At the same time, a locking member for damping the swinging motion of the movable iron core is fitted and arranged in the main body of the machine, and a pump housing is removably attached and fixed to the main body, and the cylinder in the pump housing A piston is inserted through the cylinder, and the oscillating motion of the movable core caused by the excitation of the solenoid coil is converted into a reciprocating motion of the piston inserted through the cylinder, and the liquid sucked into the cylinder is sprayed from the nozzle. In the spray device, a fitting portion for accommodating the locking member is formed in the main body, and the fitting portion communicates with a pump housing side of the main body to form a pressing operation portion for the locking member. Therefore, when the locking member is pressed from the pump housing side of the sprayer main body using a jig or the like, the locking member is exposed from the fitting recess.

[Example of idea]

An embodiment of the present invention will be described using the same reference numerals for the same parts as in FIG. 3. FIG. In the mounting structure, a fitting recess 1c for accommodating the locking member 23 is formed by the main body housing 1 and the fixed core 30, and a rear wall 1d of the fitting recess 1c and the pump housing 1 of the main body housing 1 are formed.
A side is communicated with side A through a long hole 1e, a female screw portion 1f is formed in this long hole 1e, a bolt 1g is screwed into this long hole 1e from closer to the pump housing 1a, and the push operation portion A is opened. It consists of The flat plate 1h is placed in the fitting recess 1c, and the locking member 23 is fitted, the tip of the bolt 1g is brought into contact with the flat plate 1h, and the locking member 23 is brought into contact with the flat plate 1h.

In this case, the tip of the bolt 1g screwed in from the pump housing 1a side is such that when the locking member 23 is fitted into the fitting recess 1c, the locking member 23 is partially inserted from the opening of the fitting recess 1c. It is screwed in such a way that it is exposed.

Therefore, if the spray device is used for a long period of time,
Even if the locking member 23, which is partially exposed from the opening of the fitting recess 1c, is gradually worn out due to the impact of the movable iron core 35 during use, the set screw 5 on the front side of the main body housing 1 Remove the main housing 1 and pump housing 1a.
After separating the sides, the bolt 1g is rotated from the front side of the main body housing 1 using a screwdriver or the like, so that the tip of the bolt 1g presses the flat plate 1h, and this pressing causes the locking member 23 to be rotated.
can be set so that it is pressed and exposed from the opening of the fitting recess 1c in an appropriate positional relationship.

The screwing length of this bolt 1g is such that the length of the locking member 23 consumed by the impact of the movable iron core 35 is sufficient.

In this way, even if the locking member 23 is worn out by the impact of the movable iron core 35, it can be exposed from the fitting recess 1c each time by the amount of wear, and the service life of the parts of the locking member 23 is improved. can be done.

In addition, if the locking member 23 becomes unable to perform its buffering function and needs to be replaced, after removing the housing cover 1b from the main body housing 1, rotate the bolt 1g to remove the exposed locking member 23. Take it out, then rotate the bolt 1g in the opposite direction and return it to the elongated hole 1e side, and then insert a new locking member 2.
3 into the fitting recess 1c.

FIG. 2 shows a second embodiment of the present invention, in which an L-shaped portion is connected to the rear wall portion 1d of the fitting recess 1c that accommodates the locking member 23 and the center portion of the bottom wall portion 1i. When the locking member 23 is worn out by the impact of the movable core 35 and is replaced, the main body housing 1
Using a jig such as a screwdriver, insert the locking member 23 from the rear wall 1d side of the fitting recess 1c from the front side.
By pressing , the locking member 23 is pushed out from the opening of the fitting recess 1c, and then a new locking member 23 is fitted into the fitting recess 1c.

In this way, the locking member 23 can be replaced by a simple operation such as pushing it out from the front side of the main body housing 1 using a jig.

[Effect of idea]

As described above, in the present invention, a bobbin around which a solenoid coil is wound is attached to a fixed iron core, and a movable iron core is provided facing the fixed iron core so as to be swingable by means of a leaf spring to form an electromagnetic drive section. Attach and fix the part to the main body of the sprayer,
A locking member that buffers the swinging motion of the movable iron core is fitted into the main body, a pump housing is removably attached and fixed to the main body, and a piston is inserted and disposed in the cylinder in the pump housing, In the spraying device, the oscillating motion of the movable iron core caused by the excitation of the solenoid coil is converted into the reciprocating motion of the piston penetrating the cylinder, and the liquid sucked into the cylinder is sprayed from the nozzle, wherein the above-mentioned locking is performed on the main body. By forming a fitting part for accommodating the member and communicating the fitting part with the pump housing side of the main body to form a pressing operation part for the locking member, one part of the electromagnetic drive part of the sprayer is formed. It is possible to easily replace the locking member that cushions the impact during reciprocating movement of the movable iron core that forms the part.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing the main parts of a spray device according to the first embodiment of the present invention, FIG. 2 is a cross-sectional view showing the main parts of the spray device according to the second embodiment of the present invention, and FIG. FIG. 1 is an overall sectional view of a conventional device. 1...Body, 1a...Pump housing, 1c
...Fitting recess, 2...Electromagnetic drive unit, 6...Cylinder, 7...Piston, 19...Nozzle, 23...
Locking member, 30... fixed core, 32... solenoid coil, 33... bobbin, 35... movable core,
36...Plate spring, A...Press operation section.

Claims (1)

[Scope of utility model registration request] A bobbin around which a solenoid coil is wound is attached to a fixed iron core, and a movable iron core is provided facing the fixed iron core so as to be swingable by means of a leaf spring to form an electromagnetic drive section. In addition to attaching and fixing, a locking member is inserted and arranged in this main body to buffer the swinging movement of the movable iron core,
A pump housing is removably attached and fixed to the main body, a piston is inserted through a cylinder in the pump housing, and the swinging motion of the movable core due to the excitation of the solenoid coil is caused to reciprocate by the piston inserted through the cylinder. In the spraying device that converts the liquid into motion and sprays the liquid sucked into the cylinder from the nozzle, the main body is formed with a fitting part for accommodating the locking member, and the fitting part and the pump of the main body are formed. A spray device characterized in that a pressing operation portion of the locking member is formed in communication with a housing side.