JPS6024424Y2 - Structure of cylinder member in manual small sprayer - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to the structure of a cylinder member in a small manual sprayer.

A small manual sprayer is used for spraying lotion, etc., but if the mechanism is convenient for use, the structure tends to be complicated, and the number of parts increases, making it expensive.

The present invention allows the number of parts of the sprayer to be reduced, and the drawings will be explained below.

1 is a cylinder member made of synthetic resin according to the present invention, and 2 is a cylinder portion thereof.

A pipe 3 for sucking up liquid is fitted into the lower end of the cylinder part, and an outward flange part 4 projects from the upper end of the body part 2, and a container body extends from the outer periphery of the outward flange part. A peripheral wall 5 for fitting into the mouth and neck is vertically provided.

It is preferable to form a thread 6 on the inner surface of the peripheral wall.

Air holes 7 and 8 are formed in a part of the peripheral wall and a part of the body of the cylinder part facing the part so as to be located on the same straight line.

The air hole 7 formed on the peripheral wall side also serves as a die-cut hole for forming the air hole 8 provided on the cylinder side, and is preferably formed larger than the air hole.

If necessary, a holding cylindrical portion 1° having an engaging protrusion 9 on the inner edge of the upper end is made to protrude upward from the inner edge of the outward flange 4.

The plunger member 1 is assembled into a sprayer main body, for example, in the following manner.

That is, the injection tube 1 has a compression coil spring 11 installed inside the cylinder hole 12 and an upper part fitted into the spray head 13.
4 further from below, the rod member 1 whose lower end is the valve body part 15
6 and insert the rod member and the lower part of the injection tube into the cylinder hole.

An engaging protrusion 17 is provided on the outer periphery of the lower end of the peripheral wall of the spray head, and engages with the engaging protrusion 9 of the holding cylinder to prevent upward removal and enable downward sliding.

A thin skirt part 18 is provided around the outer periphery of the lower end of the injection pipe so as to be in watertight contact with the inner wall of the cylinder, and the skirt part 18 closes the air hole 8 when the injection pipe 14 is located at the upper limit as shown in the figure. I will set it up so that

A thin-walled short cylindrical portion 19 that expands due to the upward force protrudes from the upper end of the injection tube 14, and a spray head top wall 13 is inserted into the cylinder.
A valve body 13b, which is vertically disposed from the back surface of the valve a, is brought into pressure contact with the valve body 13a to form a discharge valve 2o.

From the state shown above, the spray head 13 is
When pressed down against the elasticity of the cylinder, the valve hole 1a at the bottom of the cylinder opens.
and the valve body portion 15 at the lower end of the rod member 16 form the suction valve 21
Since the is in a closed state, the pressure inside the cylinder and injection pipe is increased, and the short cylinder part 19 is opened due to the increased pressure, and the spray is discharged from the nozzle hole 23 through the passage 22. After the spray head reaches the lower limit, the spray head is released by pressing the finger. When released, the spring 11 pushes up the spray head together with the injection tube.

At this time, since the discharge valve 20 is closed, the pressure inside the cylinder and the injection pipe becomes negative, so the suction valve 21 opens and the liquid inside the container flows.

By repeating the above operation, the liquid sucked up into the cylinder is sprayed each time the spray head is pressed down.

Negative pressure inside the container body due to a decrease in liquid is prevented by letting outside air enter through the air hole 8 between the holding cylinder 10 and the outer surface of the peripheral wall of the spray head when the spray head is pressed down, and when the spray head is not in use, the above-mentioned Since the skirt portion closes the air holes 8, there will be no leakage even if the container falls over.

This project has the above structure, and since the cylinder member and the cap, which were conventionally made separately, are integrated, the number of parts is reduced and the assembly process can be reduced. Vertical fitting peripheral wall 5
Since the air holes 7 and 8 are located on the same straight line in a part of the cylinder part and the body part of the cylinder part facing this, when the cylinder part is integrally molded with synthetic resin material, the cylinder part side It is convenient because the mold can be removed for drilling the air holes 8 using the outside air holes 7, and the outside air holes 7 can be removed if the pressure inside the container becomes abnormal for some reason. It is convenient because it also has a safety valve function when the temperature becomes high or low.

[Brief explanation of drawings]

The drawing is a cross-sectional view of a small manual sprayer body having a cylinder member of the proposed structure. 1...Cylinder member, 2...Cylinder part, 4...Outward flange part, 5...
Fitting peripheral wall, 7, 8... air holes.

Claims (1)

[Scope of utility model registration request] The cylinder member 1 is formed of a synthetic resin material by protruding an outward flange part 4 from the upper end of the cylinder part 2, and by vertically extending a peripheral wall 5 for fitting to the mouth and neck of the container body from the outer peripheral edge of the flange part. A cylinder member in a manual small-sized sprayer, characterized in that air holes 7.8 are formed in a part of the peripheral wall and a body part of the cylinder part opposing thereto, so as to be located on the same straight line. structure.