JPS6238771Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a small hand-operated sprayer, and in particular, in a spray head, a nozzle hole member having a nozzle hole is rotatably attached, and the area of the introduction path of the nozzle hole member to the nozzle hole is increased. To provide a small manual sprayer that can be adjusted to adjust the spread of spray liquid.

Embodiments of the present invention will be described below with reference to the accompanying drawings. In the figure, reference numeral 1 denotes a mounting part that is removably attached to the container by screwing or other means, 2 an engagement tube extending upward from the attachment part 1, and 3 a locking part that does not slip out from the engagement tube 2. It is a depressable spray head that is inserted into and guided by it.

This type of sprayer is very well known, so to briefly explain its outline excluding the main parts, the mounting part 1 has a vertically long cylinder that hangs downward.
A suction pipe is provided hanging from the bottom of the cylinder and extends downward into the container. On the other hand, the cylindrical piston that slides up and down in the cylinder has a stem 4 that penetrates through the engaging cylinder 2 and projects upward to communicate with the spray head 3. This stem 4, the piston, and the spray head 3 are integrated. is always urged upward by a spring built into the cylinder, and a suction valve and a discharge valve are provided at the upper end of the suction pipe and the lower end of the stem, respectively.

With this structure, under normal conditions, the cylinder is filled with the liquid in the container sucked up through the suction pipe, and in this state, the spray head 3 pushes the piston downward against the spring through the stem 4. When the piston is lowered, the upper opening of the piston is sealed with a discharge valve, so the lowering action increases the hydraulic pressure inside the cylinder. When this hydraulic pressure reaches a predetermined value, the discharge valve is pushed up, causing the inside of the cylinder to rise. The liquid is sprayed outward from the nozzle hole 5 through the gap between the discharge valve and the stem 4 in the form of a mist. When the depressing operation is stopped when the liquid in the cylinder is almost jetted out, the spray head 3,
The stem 4 and the piston are returned to their original state by the spring, but on the other hand, when the liquid jetting ends, the inside of the cylinder becomes negative pressure, so the liquid in the container flows through the suction pipe,
It flows into the cylinder through the suction valve, completing one cycle of the spray operation.

In the present invention, the spray head 3 has the structure shown in FIGS. 2a, b, and c. In the figure, reference numeral 6 denotes a nozzle hole member in the form of a tip, and a nozzle hole 5 is formed in the center of an end plate 7 of this nozzle hole member 6. The end plate 7
A pair of curved radial introduction grooves 8, 8 communicating with the nozzle hole 5 are provided in opposite directions on the back surface of the A portion of the groove 9 extends through a groove 10 into the inner surface of the cylindrical portion 11, and the nozzle hole member 6 is rotatably attached to the block body 13 of the spray head 3 by a knob 12 extending from one end. . on the other hand,
The end face of the block body 13 into which the nozzle hole member 6 is inserted is flat, and this flat end face closes the grooves 8 and 9 to make them hole-like passages. A passage 15 communicating with the liquid passage 14 is recessed in the axial direction. This passage 15
communicates with the groove 10, thus the liquid path 1 of the stem 4
The high pressure liquid from 4 is ejected to the outside from the nozzle hole 5 through the path 14-15-10-9-〓〓〓-5. Note that the cross-sectional areas of the passage 15 and the groove 10 are approximately the same.

With the above configuration, if the nozzle hole member 6 is shifted from the position where the groove 10 completely overlaps the passage 15 as shown in FIG.
3, and the liquid pressure of the ejected liquid increases, so that the spread of the atomized liquid ejected from the nozzle hole 5 increases. The spread of this sprayed liquid can be varied by adjusting the overlap between the passage 15 and the groove 10 by rotating the nozzle hole member 6.

FIG. 4 shows another embodiment, in which a pair of introduction grooves 8, 8 and an annular groove 9 in the radial direction on the back surface of the nozzle hole member 6 correspond to a pair of introduction grooves of the same shape on the end face of the block body 13. 8a, 8a, and an annular groove 9a are provided,
As shown in figure b, the nozzle hole member 6 is rotated to shift the position of the nozzle hole member 6 with respect to the introduction grooves 8a, 8a, so that the area of the introduction grooves 8, 8 can be varied, and is similar to the previous embodiment. can reach the goal.

According to the present invention, the spread of the spray liquid ejected from the nozzle hole 5 can be adjusted to be wide or narrow by a very simple operation of slightly rotating the nozzle hole member 6.
It is convenient to use. Moreover, structurally, it is advantageous in terms of manufacturing because it is sufficient to improve the nozzle hole member 6 of the spray head 3.

[Brief explanation of the drawing]

Fig. 1 is a front view showing the essential parts of the small manual sprayer of the present invention, Fig. 2a is a detailed vertical sectional view of the nozzle hole member of the same sprayer, and Fig. 2b is a back view of the nozzle hole member. , FIG. 4c is an end view of the spray head block body surrounded by the nozzle hole member, FIG. 3 is a diagram for explaining spray liquid spread adjustment, and FIG. 4a is a view of the nozzle hole member of another embodiment. The vertical cross-sectional view, FIG. 3... Spray head, 4... Stem, 5... Nozzle, 6... Nozzle hole member, 8, 8, 8a, 8a...
...Introduction groove, 9...Annular groove, 10...Groove, 15...
aisle.

Claims (1)

[Scope of utility model registration request] A nozzle hole 5 is formed in the center of the end plate 7, and a pair of radial introduction grooves 8, 8 in opposite directions communicating with the nozzle hole 5 are provided on the back surface of the end plate 7;
8. A nozzle hole member 6 in the shape of a drop having an annular groove 9 communicating with the other end is assembled into the side of the spray head 3, and the annular groove 9 is connected to the stem 4 liquid path 14 through the passage 15 of the block body 13 of the spray head 3. In the case where the end plate 7 of the nozzle hole member 6 is provided with a groove 10 on the back surface of the end plate 7 to communicate the passage 15 and the annular groove 9, or the end plate 7 is provided on the front end surface of the block body 13.
Corresponding introduction grooves 8a, 8a, annular groove 9a are provided on the back surface, and the nozzle hole member 6 is rotatably incorporated, and the passage area of the grooves 10 or the introduction grooves 8, 8 can be variably adjusted by rotation thereof. A small manual sprayer.