JPS5916137Y2 - trigger sprayer - Google Patents

Description

[Detailed explanation of the idea] This case concerns a trigger-type sprayer.

Although this type of sprayer has recently been widely used for home gardening, it has the disadvantage that the spraying liquid is discharged in an incomplete state at the beginning and end of spraying.

The present invention eliminates these drawbacks and will be described below with reference to the drawings.

Reference numeral 1 denotes a container body containing a liquid for spraying, and a threaded tube 4 at the lower end of a main body 3 is screwed into the neck part 2 of the container body.

An upright cylindrical portion 5 projects upward from the threaded cylinder, and a head 6 projects obliquely upward from the cylindrical portion.

A flow passage 8 is bored from the center of the back wall 7 of the upright cylinder part into the head 6, and a small diameter cylinder 11 is formed in the head from the lower part of the head end surface 10 by communicating the flow passage tip with the flow passage 9. It's a shame.

A compression sprocket 12 is installed inside the small diameter cylinder.

Inside the upright cylinder part 5 is a fitting cylinder 15 having an inward flange 13 formed at the upper end and a pipe 14 hanging from the tip of the flange.
mate.

A check valve 16 is provided in the upper part of the pipe 14, and a suction pipe 17 that hangs vertically into the container body is fitted to the lower part of the check valve 16, but the structure thereof is the same as that of a conventionally known trigger type sprayer. That's fine.

A proximal end of a trigger handle 18 is pivotally attached 19 to the upper outer end of the main body, that is, the upper outer end of the head 6.

The handle has a bifurcated portion 20 above the intermediate portion, and a large diameter cylinder 21 is pivotally mounted 22 into the intermediate portion.

The large-diameter cylinder has a valve hole 24 at the center of its back wall 23, and a nozzle 25 projects from the back wall.

A flow path pipe 26 is provided between the previously described small diameter cylinder 11 and large diameter cylinder 21, with both ends inserted into both cylinders.

The outer surface of the end inserted into the small diameter cylinder is a small diameter piston 27.
The outer peripheral surface of the other end is a large diameter piston 28, and a valve body 29 is made to protrude from the end surface.

In the inserted state, the aforementioned compression spring 12 presses the valve body 29 against the valve hole 24 and closes it.

In the above configuration, when the trigger handle 18 is pulled toward the main body, pressure is applied between the check valve 16 and the second check valve 30 formed by the valve body 29 and the valve hole 24.

The insides of the large and small cylinders are equally pressurized, but since the pressure-receiving area of the large-diameter piston 28 is large, when the pressure is increased to a certain pressure, the large-diameter piston and therefore the flow path pipe 28
moves toward the small diameter cylinder, and the second check valve 30 is opened.

While the trigger type handle is being pulled, the above pressure will be maintained, and therefore the second check valve will continue to be open, but as the moving speed of the handle pull becomes slower, the above pressure will also decrease. Then, the valve body 29 closes the valve hole 24 due to the elastic force of the compression spring 12.

When the handle is released in this state, the handle returns to its original position due to the compression spring, and the flow pipe 26 also moves forward, causing the check valve 16 to open due to the negative pressure inside the small diameter cylinder, allowing liquid to flow into the cylinders, etc.

As mentioned above, this proposal includes a small-diameter cylinder on the main body side and a large-diameter cylinder on the trigger handle side, and between them, a flow pipe with both ends formed by large and small pistons, and both ends inside the cylinder. Since the trigger type sprayer is inserted into the pressure-accumulating type sprayer, there is no mechanical difficulty in forming the trigger type sprayer into a pressure accumulation type sprayer.
Moreover, since it is a pressure accumulating type, unlike conventional trigger type atomizers, the liquid is not ejected with incomplete atomization at the beginning and end of the atomization.

[Brief explanation of the drawing]

Figure 1 is a longitudinal sectional view of the sprayer of the present invention, Figure 2 is Figure 1 II
It is a sectional view taken along the line -II in the direction of the arrow. 1...Liquid storage container, 3...Main body, 1
1... Small diameter cylinder, 12... Compression spring, 21... Large diameter cylinder, 24...
... Valve hole, 25 ... Nozzle, 26 ...
・Flow path pipe, 27... Small diameter piston, 28...
...Large diameter piston, 29...Valve body.

Claims (1)

[Scope of utility model registration request] When the trigger-type handle 18, whose base end is pivotally connected to the upper outer end of the main body 3 and hangs down, is pulled toward the main body 3, a pump mechanism provided between the main body 3 and the intermediate part of the handle 18 In this sprayer, a compression spring 12 is inserted into the inside of the pump mechanism toward the main body side of the pump mechanism. A small-diameter cylinder 11 charged with is provided with a large-diameter cylinder 21 having a valve hole 24 in the center of a back wall 23 and a nozzle 25 protruding from the back wall on the handle side, and a large-diameter cylinder 21 having a nozzle 25 protruding from the back wall. The small-diameter piston 27 formed on the outer peripheral surface of the front end is inserted into the small-diameter cylinder 21 and the large-diameter piston 28 formed on the outer peripheral surface of the front end is inserted into the large-diameter cylinder 21 to form a flow path pipe 26 with a valve body 29 at the front end, by the spring 12. Normal valve body 29
A trigger-type sprayer characterized in that the valve hole 24 is closed by a valve hole 24.