JPS58177168A - Hydraulic spray gun - Google Patents

Abstract

PURPOSE:To enable to change an amount to be atomized arbitrarily without the exchange of parts, by providing the ball which can be rotated through an interlocking means by the operation of a trigger to the ejecting part of the spray gun. CONSTITUTION:A rotary ball 11 rotatably clamped between an ejecting plate 9 and a supporting plate 10 is provided in the holder case 8 of an ejecting part 4. A hole 9a of predetermined size is provided in the ejecting plate 9. Since the spray gun is constituted in this way, the spray amount of a liquid to be ejected and atomized can be changed at discretion in response to a position between a closed one and a fully-opened one by the operation of a trigger, and the exchange of parts can be eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention includes a gun body, a discharge section provided at the tip of the gun body, and a trigger swingably attached to the gun body. This invention relates to a hydraulic spray gun that can be started and stopped.

The above-mentioned type of hydraulic spray gun is already well known and is used in a hydraulic spray device that sucks in, pressurizes, pumps, and discharges liquids such as paints and chemicals by operating a pump. When a liquid is discharged and atomized by this type of hydraulic spray device, it is often necessary to change the amount of the liquid to be sprayed. At this time,
For conventional spray guns, prepare an appropriate number of nozzle tips with different diameters, and replace each time with a smaller diameter nozzle tip when reducing the amount of spray, and a larger diameter nozzle tip when increasing the amount of spray. was.

However, such a replacement operation has the problem of being time-consuming.

SUMMARY OF THE INVENTION An object of the present invention is to provide a hydraulic spray gun that eliminates the above-mentioned conventional problems and allows the amount of spray to be changed arbitrarily without replacing parts of the discharge section.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, reference numeral 1 denotes a hydraulic spray gun, and the hydraulic spray gun 1 has a gun body 2 having a grip part 3.
It has a discharge part 4 attached to the tip of the gun body 2 via a union nut 5, and a trigger 6 rotatably attached to the gun body 2. And this spray gun 1
A flow passage hole 7 is formed from the bottom of the grip part B to the discharge part 4 through the gun body 2, and a hose of a hydraulic spray device (not shown) is connected to the bottom of the grip part B.

The discharge part 4 has a holder case 8 as shown in FIGS. 2 to 4, and a rotating ball 11 rotatably held between a discharge plate 9 and a support plate 10 in the case.
is provided. In this case, the ejection plate 9 is fixed to the holder case 8, and the support plate 10 is attached to the holder case 8 so as to be slidable in the left and right direction in FIG. The other end of the pressure spring 12 is pressed against the other end of the pressure spring 12 .

Therefore, a leftward pressing force is always applied to the support plate 10, and the rotating ball 11 is held by the action of the pressing spring 12.

The ejection plate 9 is formed with an ejection plate hole 9a of a predetermined size, and the size of the hole 9a is desirably selected so as to provide a large amount of spray. Further, the five-rotation ball 11 is provided with a flow path configured as a through hole 13 passing through the center of the ball in this example, and the support plate 10 is also provided with holes 10 and 13 as shown in FIG. A notch 10b is formed.

The rotating ball 11 has a groove 1 extending in the left-right direction on its upper part.
1a is formed, and a corner 15a at the lower end of a connecting shaft 15, which is rotatably fitted into a nut member 14 screwed onto the upper part of the holder case 8, is engaged with the groove 11m.

A lever plate 16 is fixed to the upper part of the connection shaft 15, and the lever plate 16 and a trigger block 20, which will be described later, are connected via a connection iron 17.

In this example, the connecting shaft 15, lever plate 16, and connecting rod 17 constitute interlocking means for rotating the rotary ball 11 in conjunction with the operation of the trigger 6.

The trigger 6 is attached to the gun body 2 so as to be swingable about the bottle 18, and further connected to a trigger block 20 via a screw 19 at its tip. An adjustment screw 21 is screwed onto the right end of the trigger block 20 in FIG. 1, and a stop collar 421a is fixed to this adjustment screw 20. Further, the other end of a compression spring 22, one end of which is attached to the gun body 2, is in pressure contact with the left end of the adjustment screw 20.
Due to this action, an elastic action is applied to the trigger block 20 in the direction of the arrow. Due to this elastic action, the trigger 6
is biased for clockwise rotation with the bottle 1B centered and closed, but the trigger 6 comes into contact with the left end of a notch (not shown) formed in the gun body 2, and the trigger 6 moves to the first position. It is held in the position shown in the figure.

Here, when the trigger 6 is pulled, the trigger 6 rotates counterclockwise around the bottle 1B as shown in FIG. 6, and the trigger block 20 moves in the opposite direction to the arrow A. The trigger block 20 can then be moved to a position where the stopper piece 21 comes into contact with the side surface of the gun body 2. At this time, by operating the adjustment screw 21, the stopper piece 21a
can be changed to a desired position, and therefore the distance that the trigger block 20 is moved by operating the trigger 6 can be changed. When the trigger block 20 further moves, the connecting shaft 15 rotates by a predetermined angle about its axis 0 via the connecting iron 17 and the lever plate 16, and the rotating ball 11 similarly rotates. In addition, when the trigger 6 is in the normal state shown in FIG.
As shown in FIG. 3, the hole 9a of the ejection plate 9 and the through hole 13 of the rotating ball 11 are in the closed position where they are deviated, and when the trigger 6 is pulled to the maximum, the hole 9a is as shown in FIG.
It is set so that it is in a fully open position where the through hole 13 and the through hole 13 coincide with each other.

The spray gun 1 configured as described above can be controlled between a closed position where the hole 9a of the jet plate 9 is closed and a fully open position where the hole 9a of the jet plate 9 is fully opened by operating the trigger 6, and the amount of liquid to be sprayed can be adjusted as desired. be changed. Furthermore, by changing the position of the stopper with the adjusting screw 21, the desired amount of spray can be obtained when the trigger 6 is pulled all at once.

FIG. 8 shows another embodiment of the hydraulic spray gun according to the present invention, in which a flow path configured as a groove-shaped notch 23 is formed on the circumferential surface of the one-rotation ball 11. has been done. This notch 23 is formed in the vertical direction so as to be shifted to the right in the figure from the jet plate hole 9a with respect to a perpendicular line passing through the center of the rotating ball 11.
3 is equal to or slightly wider than the width of the ejection plate hole 9a.

According to this configuration, by rotating the rotary ball 11 by operating the trigger 6, the ejection plate hole 9a and the notch 23 overlap as shown in FIG. can be changed to Furthermore, since it is sufficient to form a groove on the two-rotation ball 11, it is easier to manufacture it than the through hole 13 of the above embodiment. Note that the liquid to be discharged and sprayed flows into the notch 25 via the notch 10b of the support plate 10.

Further, as shown in FIG. 10, a transverse groove-shaped notch 24 may be formed instead of the notch 23, and in this case, the same advantages as in the above embodiment can be obtained. Also.

The shape of the notch is not limited to the groove-like shape described above, but may be one obtained by cutting out a part of the rotating ball 11 shown in FIG. 11, for example, or any other shape as long as it leaves more than a hemisphere.

The hydraulic spray gun according to the present invention is constructed as described above, and the amount of liquid sprayed can be changed by operating the trigger, making the operation extremely simple. Furthermore, the diameter of the conventional nozzle tip is 0.
2 Standardized to lIJ, 0.25 ws, 0.5 w, etc., and the spray amount is limited to the amount corresponding to the diameter.1 However, according to the present invention, the amount of liquid spray can be arbitrarily changed, and the amount of spray can be adjusted slightly. can be adjusted.

Further, according to the present invention, since the ejection plate holes are relatively large, there is an advantage that clogging is difficult to occur.

[Brief explanation of the drawing]

FIG. 1 is a side view showing the entire hydraulic spray gun according to the present invention, and FIGS. 2, 3, and 4 are a side view, a plane, and a front view of a quarter of the discharge part of the spray gun shown in FIG. Cross-sectional view, Figure 5 is a front view of the support plate, Figure 6 is an overall side view showing the spray can with the trigger pulled, Figure 7 is a plane cross-section of the quarter of the discharge section when the trigger is pulled. 8 is an explanatory diagram showing a rotating ball according to another embodiment of the present invention, FIG. 9 is an explanatory diagram showing an example of the state in which the rotating ball is rotated, and FIGS. 10 and 11 are each further illustrated in FIG. It is an explanatory view showing a rotating ball in another example. 1... Sprayer / 2... Gun body 4... Discharge part 6... Trigger 9... Discharge plate
9a... Ejection plate hole 10... Rotating ball
13...Through hole 15...Connection shaft 16.
・・Lever plate 17・Connecting rod 20・
...Trigger block 23.24...Notch

Claims (3)

[Claims] (1) It has a gun body, a discharge part provided at the tip of the gun body, and a trigger swingably attached to the gun body, and the trigger can be operated to start and stop spraying liquid discharge. In a possible hydraulic spray gun, the discharge section includes a jetting plate having a hole of a predetermined size, a rotating ball that is in pressure contact with the jetting plate and is rotatable, and a flow path formed in the rotating ball. and an interlocking means for rotating the rotary ball in conjunction with the operation of the trigger, and a fully open position where the flow path is aligned with the jet plate hole and the jet grate hole is fully opened, and a fully open position where the jet plate hole is fully opened. The hydraulic spray gun is characterized in that the rotary ball is rotated via the interlocking means by operation of the trigger between a closed position where the flow path is shifted and the ejection plate hole is closed. (2) The flow path is a through hole passing through the ball that rotates once. A hydraulic spray gun according to claim 1. (3) The hydraulic spray gun according to claim 1, wherein the flow path is a notch formed in a rotating ball surface.