JPS6238768Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a small hand-operated sprayer, and in particular, the area in the middle of the liquid path leading to the nozzle hole of the spray head at the upper end of the stem is varied to vary the pressure of the spray liquid ejected from the nozzle hole. The purpose of the present invention is to provide a small manual sprayer that can adjust the spread of shiso.

Embodiments of the present invention will be described below with reference to the accompanying drawings. In FIG. 1, reference numeral 1 denotes a mounting part that is detachably attached to the container by means such as screwing, and 2 indicates the mounting part 1.
3 is an outer engaging cylinder extending upward from the spray head.

Since this type of sprayer is well known, a brief explanation will be given excluding the main parts.The mounting part 1 is equipped with a vertically long small diameter cylinder 4 that hangs downward, and a suction valve is inserted from the bottom of the small diameter cylinder 4. There is a suction pipe that hangs down inside the container. A movable cylindrical member 5 having a small-diameter piston formed at its lower end is housed inside the small-diameter cylinder 4 so as to be slidable up and down. The upper end of this movable cylinder member 5 is formed into a discharge valve body 6. Reference numeral 7 denotes a large-diameter cylinder, which is fitted into the inner engaging cylinder 8 so as not to slip out.This large-diameter cylinder 7 has a discharge port 9 at its lower end that forms a discharge valve with the discharge valve body 6. A formed stem 10 is integrally provided. A piston member 11 is fixed to the outer periphery of the upper half of the movable cylinder member 5, and a large diameter piston 12 at the upper end of the piston member 11 is inscribed in the large diameter cylinder 7. The stem 10 communicates through a passage 13 with a nozzle hole 14 on the side of the spray head 3. The small-diameter cylinder 4 is equipped with a spring, and this spring moves the movable cylinder member 5, the piston member 11, the large-diameter cylinder 7, and the spray head 3 to the upper position shown in the figure through the lower end of the movable cylinder member 5. It's pushing up.

With this structure, under normal conditions, the liquid in the container sucked up through the suction pipe is transferred to the small diameter cylinder 4.
It's full inside. In this state, when the spray head 3 is pushed down against the spring, the spray head 3, the integral body of the movable cylinder member 5 and the piston member 11, and the integral body of the large diameter cylinder 7 and the stem 10 are connected to the discharge valve. The body 6 is pushed down with the discharge port 9 closed, thereby narrowing the pressurizing chamber A of the small diameter cylinder 4, thereby pressurizing the liquid in the pressurizing chamber A. Then, the high pressure liquid in the pressurizing chamber A enters the pressurizing chamber B through the through hole 15 and the engagement vertical groove 16 on the outer surface of the movable cylinder member 5. Here, since the inner diameter of pressurizing chamber B is larger than the inner diameter of pressurizing chamber A, the lower pressure due to the liquid in pressurizing chamber B is greater than that of pressurizing chamber A, and therefore the liquid in pressurizing chamber B is Pushing down the movable cylinder member 5 and the piston member 11 via the diameter piston 12,
As a result, the discharge port 9 opens, and the high-pressure liquid in the pressurized chambers A and B is ejected from the nozzle hole 14 through the discharge port 9 to the outside in the form of mist. When the spray head 3 is stopped being pushed down after spraying is completed, the spray head 3, movable cylinder member 5, and piston member 11 are pushed upward by the spring and return to the state shown in the figure, and at this time, the pressurized chamber A.
Since the pressure in B becomes negative, the liquid in the container is sucked up into the pressurizing chamber A through the suction pipe and the suction valve, and one cycle of the spraying operation is completed.

Here, in the present invention, an adjustment shaft 18 is screwed through the spray head 3 so that the tapered portion 17 at the lower end reaches the opening at the upper end of the stem 10.

Therefore, at the solid line position in the figure, the tapered portion 17 at the lower end of the adjustment shaft 18 seals the upper end opening of the stem 10, that is, the passage of high-pressure liquid to the nozzle hole 14. When pulled upward as shown by the broken line, the area of the high-pressure liquid path A can be changed in accordance with the pulling up, so the pressure of the high-pressure liquid directed toward the nozzle hole 14 can be changed.
The spread of the spray liquid ejected from can be adjusted.

FIGS. 2 and 3 a and 3 b show other embodiments, and FIG. 2 shows an example in which the adjustment shaft 18 is threaded through the spray head 3 from the side opposite to the nozzle hole 14 in the lateral direction. In addition, in the case of FIGS. 3a and 3b, a groove 20 communicating with the passage 13 is cut out in the lower end surface of the adjustment shaft 18 which is threaded vertically through the top wall of the spray head 3, and the overlap between the groove 20 and the passage 13 is cut out. The area of the passage A can be varied by adjusting it by rotating the adjustment shaft 18.
These embodiments can also achieve the object in the same way as in FIG. 1.

Further, in the above embodiment, two cylinders 7 and 4 with large and small diameters are provided for convenience, and therefore two pressurizing chambers A,
Although the atomizer with B is taken as an example, it can also be applied to one with one cylinder and therefore one pressurized chamber.

According to the present invention, the adjustment shaft 1 is attached to the spray head 3.
8 is screwed through, and the area of the high-pressure liquid passage A at the upper end opening of the stem 10 leading to the nozzle hole 14 can be varied wide or narrow by moving the adjustment shaft 18 back and forth, and the pressure of the high-pressure liquid directed toward the nozzle hole 14 can be varied. Therefore, the spread of the spray liquid can be adjusted to be wide or narrow at will, which is convenient for use. Moreover, the operation is extremely simple, as only the adjusting shaft 18 is rotated by the knob 19, and furthermore, it is advantageous in terms of manufacturing, since structurally only the spray head 3 needs to be improved.

[Brief explanation of the drawing]

Fig. 1 is an upper front view showing the right half of the small hand-operated sprayer according to the present invention; Fig. 2 is a schematic vertical sectional view of a spray head showing another embodiment; Figs. 3 a and b are further different ones; FIG. 2 is a schematic vertical sectional view of a spray head and an end view of an adjustment shaft showing an embodiment. DESCRIPTION OF SYMBOLS 1... Mounting part, 3... Spray head, 10... Stem, 14... Nozzle hole, 14... Adjustment shaft.

Claims (1)

[Scope of utility model registration request] The spray head 3 is attached to the upper end of the stem 10, and the upper end opening of the stem 10 is communicated with the nozzle hole 14 on the side of the spray head 3.
, an adjustment shaft 18 that reaches the upper end opening of the stem 10
A small manual sprayer is provided with a screw threaded through the shaft, and the area of the passage A leading to the nozzle hole 14 at the upper end opening of the stem 10 can be varied widely by moving the adjustment shaft 18 back and forth or rotating it.