JPS6031803Y2 - manual sprayer - Google Patents

Description

[Detailed explanation of the idea] This proposal concerns a manual sprayer.

Conventional small sprayers can be roughly divided into aerosol sprayers and manual sprayers.

Aerosol sprayers are extremely convenient to use, as high-pressure liquid is sprayed by simply pushing down the spray head at the top of the stem, which protrudes upward through the top wall of the container body.
There are drawbacks such as causing pollution if the gas inside the container is released into the outside air.

In addition, manual sprayers do not have the above disadvantages because they do not use gas, but the spray head at the top of the stem moves up and down to operate the pump below the stem to spray, so the spray pressure varies. This tends to cause wave riding from the nozzle hole, and the mist becomes coarse.Furthermore, the length of the stem becomes longer by the stroke length necessary to operate the pump, which causes the spray head to become an obstruction, and also causes the spray head to become too large during packaging. There was a drawback.

The present invention adopts the advantages of the above-mentioned atomizers and eliminates the disadvantages thereof, and will be described below with reference to the drawings.

First, referring to FIG. 1, 1 is a container body, and 2 is its mouth and neck.

The lower part of the first peripheral wall 4 of the main member 3 is screwed into the container body.

In this member, a flange-like wall 5 protrudes from the inner surface of a first peripheral wall whose lower part has a large diameter, and the flange-like wall is engaged with the top surface of the container via a backing 6.

An outside air inflow hole 7 is formed in the flange-like wall, and together with the backing 6, an outside air inflow valve is formed, which will be described later.

A cylindrical portion 8 is suspended from the inner peripheral edge of the flange-like wall, and a cylindrical piston 1 is inserted from the lower end of the cylinder via a second flange-like wall 9.
0 is standing up.

The upper end of a suction pipe 11 vertically disposed within the container body is fitted into the lower part of the cylindrical piston, and a suction valve 12 is formed within the upper end of the cylindrical piston.

A piston ring 13 is fitted onto the outer surface of the upper end of the cylindrical piston.

An engaging protrusion 14 is provided around the outer periphery of the upper end of the first peripheral wall.

A vertically movable member 15 is fitted into the main member.

The member includes a second member fitted into the first peripheral wall so as to be movable up and down.
A peripheral wall 16 is suspended from a top wall 17.

It is preferable that an engagement protrusion 18 is provided around the lower end of the second peripheral wall,
The protrusion engages with the engagement protrusion on the upper end of the first peripheral wall at its upper limit, thereby preventing the second peripheral wall from being pulled out.

A first cylindrical body 19 with a closed lower end is suspended from the top wall 17.

The first cylindrical body has a discharge valve 21 at the center of the bottom wall 20.

A first cylinder 22 is provided vertically from the back surface of the bottom wall surrounding the discharge valve hole, into which the cylindrical piston is inserted.

These form a liquid suction pump 23.

A second cylinder 24 with a closed bottom end is fitted into the first cylinder with a gap 25 for forming a flow path provided between the inner surface of the first cylinder and the lower surface of the top wall.

The gap may be formed by a groove. A piston 26 is fitted into the second cylinder and urged upward.

27 is a biasing spring.

A stem 28 is hermetically passed through the center of the top wall of the vertically movable member.

The stem is movable up and down and is biased upward.

There is a second valve at the bottom of the stem that opens when the stem is pushed down.
A discharge valve (not shown) is provided, and a spray head 30 with a nozzle hole 29 is attached to the upper end of the stem.

The spray means 31 is formed by these. The atomizing means may be the same as that of a conventional aerosol atomizer.

32 is a valve box, and the stem is urged upward by a spring provided in the valve box.

The second discharge valve is located within the first cylinder.

The top wall portion through which the stem passes is preferably formed by a separately provided plate portion 33 as shown.

In the above configuration, when the vertically movable member 15 is pulled up, the inside of the suction pump becomes negative pressure and the liquid inside the container is sucked into the first cylinder.

Next, when the vertically movable member is pushed down, the pressure in the first cylinder becomes high, the first discharge valve opens, and high-pressure liquid enters the second cylinder through the flow path.

Then, the piston 26 is pushed down, but the liquid in the second cylinder is in a high pressure state because the piston is pushed up by the spring 27.

Subsequently, by moving the vertically moving member up and down several times, the second cylinder is filled with high pressure liquid.

Note that because of the presence of the discharge valve 21, the liquid in the second cylinder does not return to the first cylinder.

If the spray head 30 is pushed down in the above state, the second discharge valve opens and the high pressure liquid in the second cylinder is jetted out from the nozzle hole.

Although the pressure in the second cylinder should decrease due to the decrease in liquid, it does not decrease because the piston 26 is urged upward.

Negative pressure due to a decrease in the liquid inside the container is prevented by the outside air inflow valve mentioned at the beginning.

FIG. 2 shows an example in which the cylindrical piston and first cylinder shown in FIG. 1 are reversely provided.

In this case, the upper end of the suction pipe will fit into the bottom of the first cylinder.

The same applies to the suction valve. 3 is similar to the embodiment shown in FIG. 2, but an outer circumferential wall 34 is vertically disposed from the top wall of the vertically movable member, and the circumferential wall is screwed into the first circumferential wall.

In this case, the second peripheral wall is fitted into the inner surface of the first peripheral wall.

The present invention has the above configuration, and since it is used as described above, just by slightly pressing down on the spray head, high-pressure liquid is ejected, as in the case of an aerosol container. There is no corrugation from the hole,
Furthermore, since the stem can be short, the packaging will not be too bulky, and since it is a manual sprayer and does not use high pressure gas, it does not have the disadvantages of an aerosol sprayer.

The liquid suction pump is formed by providing a cylindrical piston 29 on one side of the flange-like wall of the main member and a first cylindrical bottom wall of the vertically moving member, and a first cylinder 22 on the other side, and a discharge valve of the pump. is provided in the first cylindrical body 19, and the second cylinder is provided within the first cylindrical body, it is convenient because the sizes of the first and second cylinders can be determined freely. The second cylinder can be filled with high-pressure liquid, and there is a piston 26 biased upward in the second cylinder.
The high-pressure liquid sent from the pump pushes down the piston against its bias, so even if the liquid in the second cylinder decreases, the pressure in the second cylinder does not decrease, and the S ``It is possible to maintain the same spray pressure.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of the present sprayer, and FIGS. 2 and 3 are longitudinal cross-sectional views of the present sprayer having different embodiments. 1...Container body, 3...Main member, 15.
... Vertically moving member, 31 ... Spraying means.

Claims (1)

[Scope of utility model registration request] The container body 1 with the neck 2 protruding upward is engaged with the flange-like wall 5 protruding from the inner surface of the first circumferential wall to the top surface of the container, and the lower part of the first circumferential wall is screwed to the neck of the container. The main member 3 and the second peripheral wall 16 vertically movably fitted to the first peripheral wall are suspended from the top wall 17, and the first cylindrical body 19 whose lower end surface is closed is suspended from the top wall. A second member with a lower end face closed is fitted into the first cylindrical body with a gap for forming a flow path between the vertically movable member 15 provided therein and the inner surface of the cylindrical body and the lower surface of the top wall. A cylinder 24, a piston 26 fitted into the cylinder with an upward bias, and a stem 28 that airtightly penetrates the top wall of the vertically movable member so as to be vertically movable and biased upward. , the lower end of the stem is provided with a second discharge valve located inside the first cylinder, which opens when the stem descends; the upper end of the stem is provided with a spraying means 31 having a spray head 30 with a nozzle hole; A cylindrical piston 10 is provided on one side of the bottom wall of the first cylindrical body and a flange-shaped wall of the main member, and a first cylinder 22 is provided on the other side of the bottom wall of the first cylindrical body and the flange-like wall of the main member. A manual sprayer characterized in that a liquid suction pump 23 is formed, and a discharge valve 21 of the pump is provided on the bottom wall 19 of the first cylindrical body.