JPS5826051Y2 - Discharge pressure adjustment device for airless paint sprayers - Google Patents

Description

[Detailed description of the invention] This invention relates to an improved structure of the discharge pressure adjusting device in an airless paint sprayer, and even if the operating stroke of the armature once set changes due to incorrect operation of the device, the setting position can be easily and easily changed. It is intended to be adjustable.

Generally, as shown in Fig. 1, this type of painting machine has a solenoid coil 2 housed in a machine body 1 and an armature 3 associated with it, and a switch 5 protruding from a grip 4 extending integrally with the machine body 1. By applying an alternating current voltage to the solenoid coil 2, the armature 3 is enabled to reciprocate, and the cylinder 7 is embedded and fixed with screws 8 in a housing 6 that is integral with the body 1 and extends in a direction orthogonal to the grip 4. A piston 9 is disposed in the length direction of the housing 6 from the body 1 and inserted into the cylinder 7, and a spring 10 is elastically attached to the cylinder 7 and the piston 9, so that the piston 9 is moved by the elastic action of the spring 10. 3 to enable reciprocating movement within the cylinder 7, and furthermore, a lid 11 is integrally molded on the body 1, and a container 12 for storing paint is screwed together and suspended, and the free end of the housing 6 nozzle 1
3, the paint is sucked into the cylinder 7 from the container 12 through the suction pipe (not shown) by the reciprocating movement of the armature 3 and the piston 9 by the solenoid coil 2 and spring 10, and the nozzle 1
A screw hole 14 is formed in the body 1, and a screw portion 1 is inserted into the screw hole 14.
5 is screwed together, and the operating stroke of the armature 3 is varied depending on the degree of screwing of the adjuster 16 to adjust the spray state of the paint from the nozzle 13. .

By the way, when adjusting the spray state of the above-mentioned paint sprayer, the operating stroke of the armature 3 is adjusted by the degree of screwing of the screw portion 15 of the regulator 16 into the screw hole 14.
For example, if the adjuster 16 is rotated by mistake during painting work, the operating stroke of the amateur 3 will fluctuate, which will change the paint spray condition, and each time, the adjuster 16 will have to be rotated several times. 16 to adjust it to the initially set stroke position, and the adjustment work is complicated and takes a lot of time, and requires skill.

The present invention focuses on the above problem, and even if the adjuster is rotated due to an erroneous operation, the stroke of the amateur can be adjusted to the initially set position by rotating the adjuster within at least one rotation. Attached drawing 2nd
3, the same parts as in FIG. 1 will be described in detail using the same reference numerals.

In the figure, 1 is a fuselage body, 14 is a screw hole formed in the fuselage body 1, and 16 is an adjuster for adjusting the operating stroke of the armature 3. One member of the adjuster 16 has the above-mentioned legitimate child portion 17 formed on the outside and a retaining portion 18 formed as a recessed portion inside thereof.

In addition, a screw portion 15 for screwing into the screw hole 14 is formed on the outer white end of the other member of the adjuster 16, and
Another retaining portion 19 formed of a convex portion is formed at the internalized free end, and when the adjuster 16 is rotated by engaging the retaining portion 18 of one member with the retaining portion 19 of the other member. , both of the above members can rotate together.

Reference numeral 20 denotes a spring that constantly urges one member of the adjuster 16 against other members, and the spring 20 is disposed between the inner wall of the body 1 and a locking portion 21 formed integrally with the above-mentioned one member.

22 is a dowel formed on a part of the adjuster 16, and when the adjuster 16 is rotated, the dowel 22 can come into contact with another dowel 23 formed on the body 1. .

Incidentally, reference numeral 24 denotes a buffer rubber which is fitted and fixed to the white protruding end of the other member.

In the above configuration, the retaining portion 18 formed on one member of the adjuster 16 is engaged with the retaining portion 19 formed on the other member, and the screw portion 15 formed on the other member of the adjuster 16 is connected to the fuselage body. 1 (screwed into L14, and the locking member 21 formed integrally with the adjuster 16 and the fuselage 1
A spring 20 is elastically installed between the inner wall of the body 1 and the above-mentioned one member is pressed against the other member. 23, when the adjuster 16 is rotated, the stroke of the armature 3 is adjusted by making it contactable.
6 is moved to the right in FIG. By rotating the legitimate child part 17 in this state so that it does not come into contact with the retainer 23, the screw part 15 is rotated and screwed into the screw hole 14 through both retaining parts 18 and 19, whereby the armature The stroke of the amateur 3 is set by varying the distance between the armature 3 and the tip of the buffer rubber 24.

Then, the one member can be moved to the left in the figure by the elastic action of the spring 20 in the opposite direction to the above and returned to its original position, thereby completing the swing stroke adjustment of the armature 3.

In this case, for example, if the adjuster 16 is rotated due to an erroneous operation, both members of the adjuster 16 will be rotated at both retaining portions 18 and 19.
The threaded portion 15 also moves through the threaded hole 14 and the initially set stroke of the armature 3 changes. Forget 22 formed another time for forget 23 on aircraft 1.
By disposing the legitimate child portion 17 such that it can come into contact within one rotation of the legitimate child portion 17, the legitimate child portion 17 is not rotated more than one rotation, and one of the legitimate child portions 17 in the clockwise or counterclockwise direction is not rotated more than once. The swing stroke of the armature 3 can be readjusted to the initial setting position by a rotation operation within the rotation range.

Therefore, unlike conventional devices where it is necessary to readjust the spray pattern by turning the adjuster 16 many times each time while checking the spray pattern from the machine, with the present device,
Even if there is a fluctuation in the swinging shaft I/loaf of the armature 3 once adjusted, it can be easily re-adjusted by the screw part 15 that interlocks with the rotation operation of the heir part 17 of the adjuster 16 in one rotation or less. Adjustments can be made, and the work can be simplified without being complicated.

In addition, a spring 20 is elastically installed between the inner wall of the body 1 and a locking portion 21 formed on one member of the adjuster 16, and the one member is pressed into contact with another member on which the threaded portion 15 is formed, so that the solenoid Even if vibrations caused by the rocking motion of the coil 2 and the armature 3 are applied to the other members, the action of the spring 20 can prevent the threaded portion 15 from loosening, thus keeping the stroke constant. By doing so, the spray condition of the fuselage 1 can be improved.

As described above, according to the present device, even if the adjuster is rotated blindly due to an erroneous operation, the swing stroke of the armature can be returned to the initially set position by rotating the adjuster within one rotation. It has the advantage that it can be easily and easily adjusted without complicating the adjustment work and without requiring skill.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a main part of a conventional device, FIG. 2 is an enlarged sectional view of a main part of the proposed device, and FIG. 3 is a sectional view taken along the line A--A in FIG. 1... Airframe, 2... Solenoid coil, 3... Armature, 14... Screw hole, 15... Screw part, 16. ...adjustor, 17... legitimate child part, 18.19...
Retaining part, 20... Spring, 22.23...
・Per degree.

Claims (1)

[Scope of utility model registration request] A solenoid coil and an armature related to the solenoid coil are housed in the body, and the swinging motion of the armature due to the voltage applied to the coil is adjusted by the degree of screwing of a regulator having a terminal portion screwed into the screw hole of the body. The knob portion and the screw portion of the adjuster are separated and formed of at least two members, and one member of the adjuster has the knob portion formed on the outside and a storage member inside. The other member of the adjuster is formed with the screw portion that is screwed into the screw hole, and has another retaining portion that engages with the engaging portion. the two members of the adjuster are engaged to enable the two members of the adjuster to rotate together, and the one member of the adjuster is placed between the member having the knob portion of the adjuster and the inner wall of the body. A spring is provided on the side of the other member having the threaded portion, and furthermore, at least one abutment is formed on a part of the member having the knob portion to serve as a stopper in the rotational direction of the member. At the same time,
At least one other grommet is formed on the body side of the machine, which comes into contact with the grout with the elastic force of the spring and serves as a stopper. A discharge pressure adjusting device for an airless paint sprayer, which releases the contact between the two ends when moved in the axial direction, and has a screw portion that is configured to be rotatable in conjunction with the rotating operation of the knob portion.