JPS6238764Y2 - - Google Patents

Description

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

In conventional manual sprayers, when the spray head fitted on the upper end of the stem is moved up and down, a vertical pump installed below the stem operates to suck the liquid inside the container into the cylinder of the pump, and the spray head and the stem are moved together. When the cylinder was lowered, the pistons were pushed down together, pressurizing the inside of the cylinder, opening the discharge valve, and spraying through the stem and from the nozzle hole of the spray head. In this case, in order to operate the pump by vertical movement of the spray head, it was necessary for the spray head to protrude upward from the top wall of the cap, which was fitted into the mouth of the container body and passed through the stem, by the length of the stroke. . However, such a long upward protrusion has the disadvantage that the spray head gets in the way, and when packaging the sprayer, the packaging becomes too large due to the protrusion of the spray head.

In this case, a liquid pressurization chamber is provided above the container body so that the liquid in the chamber is always pressurized, and the stem and spray head are the same as those of conventional aerosol containers, and the spray head is small. The present invention eliminates the disadvantages of the conventional manual sprayer by simply pushing the sprayer down, and at the same time simplifies the mechanism for sucking up liquid from the container body into the liquid pressurizing chamber.

Referring to FIG. 1 below, reference numeral 1 designates a container body for storing liquid, and 2 designates a neck portion thereof. A thread is provided on the outer surface of the mouth neck portion.

The lower part of the first peripheral wall 4 of the main member 3 with the first cylinder is screwed into the mouth of the container body. The main member engages an inward flange-like wall 5 protruding from the inner surface of the first circumferential wall with the top surface of the container body, and supports the first cylinder 6 by the inner circumferential edge of the flange-like wall. The first cylinder has a lower half extending vertically into the container body, and a suction pipe 9 is vertically connected from the center of the bottom wall 7 of the first cylinder through a suction valve 8 into the container body. The first circumferential wall 4 has a large diameter portion at a portion screwed into the neck of the container body, and a small diameter portion 4a above which protrudes long upward. A thread is provided on the outer surface of the lower part of the small diameter part, and an engaging protrusion 10 is provided around the inner periphery of the upper end of the small diameter part.

A second peripheral wall 12 of an operating member 11 with a spray head is screwed into the small diameter portion of the first peripheral wall. In this member, a second peripheral wall is provided vertically from the peripheral edge of the top wall 13, and a third peripheral wall 14 is vertically movable from the back surface of the top wall in watertight contact with the inner wall surface of the first cylinder. A bottom wall 15 is attached to the lower end of the third peripheral wall, and a second suction valve 16 is provided at the center of the bottom wall.
An appropriate number of engagement longitudinal protrusions for forming longitudinal grooves are provided on the inner wall except for the upper part of the third peripheral wall. A second cylinder 17 whose lower end surface is closed is fitted into the third peripheral wall, and a piston 18 is fitted into the second cylinder in an upwardly biased state. A fourth peripheral wall 20 having an engaging protrusion 19 on the outer periphery of the lower end is hung from between the second and third peripheral walls on the back surface of the top wall, so that when the main member is pulled up to the upper limit, the inner surface of the upper end of the first peripheral wall It is preferable to provide the engagement protrusion 10 and the engagement protrusion of the fourth peripheral wall so that they are engaged with each other and the main member does not come off. Top wall 13
A stem 21 is passed through the center part in a vertically movable manner and in an airtight manner. The stem has at its lower end a discharge valve (not shown) which communicates with and opens above the piston of the second cylinder, and at its upper end a spray head 22.
It is fitted with These are exactly the same as those used in conventionally known aerosol containers, and when the spray head is pushed up against the bias, the stem descends, and the discharge valve at the lower end of the stem opens. Furthermore, when the spray head is released, the spray head and the stem rise under pressure, and then the discharge valve closes.

The stem penetrating portion of the top wall 13 may be formed by a separately provided plate portion 24 as shown in the figure, and the plate portion may be airtightly fitted into a through hole formed in the top wall. In the illustrated example, a valve box 25 into which the lower end of the stem is loosely inserted is attached to the lower surface of the plate. The valve box is loosely fitted into the upper part of the second cylinder. The inside of the second cylinder and the inside of the third peripheral wall are defined as the upper end of the second cylinder and the plate portion 24.
It communicates with the lower surface.

In the above configuration, when the actuating member 11 is loosened and raised, the pressure inside the first cylinder becomes negative, and the liquid inside the container is sucked into the first cylinder through the suction pipe and the suction valve 8. When the actuating member 11 is pushed down from this state, it passes through the second suction valve 16 and the flow path formed by the gap between the second cylinder and the third peripheral wall, and then the upper end of the second cylinder and the plate part 24. Liquid flows into the second cylinder through the space between the two cylinders. The incoming liquid pushes piston 18 down. When the second peripheral wall of the actuating member is kept in a tightened state and the spray head 22 is pushed down when necessary, the discharge valve opens and the high pressure liquid in the second cylinder passes through the stem 21 and is sprayed from the nozzle hole 23 of the spray head. It is something to do. When the liquid in the second cylinder runs out, the actuating member 11 is moved up and down again to cause high pressure liquid to flow into the second cylinder. As the liquid inside the container decreases, the pressure inside the container becomes negative.
In order to prevent the negative pressure, an inward flange-like wall 5 is provided.
A small through hole 26 is bored in the first cylinder side portion of the cylinder.
Further, the small through hole may be normally closed by a packing 27 provided on the lower surface of the flange-like wall, and may be provided so that outside air can flow in when the inside of the container becomes negative pressure. Alternatively, the fluid may be provided to flow between the mouth and neck and the lower part of the first peripheral wall and between the top of the mouth and the flange-like wall.

The embodiment shown in FIG. 2 is an example in which the second cylinder 17 is not provided as a separate member, but a flange-shaped support wall 14a is protruded from the upper inner surface of the third peripheral wall, and the second cylinder is suspended from the inner peripheral edge of the support wall. show. In this case, the third peripheral wall does not have a bottom wall, and the second suction valve 16 is formed by providing a valve hole in the support wall and placing an elastic plate on the support wall. The other parts are the same as those in the embodiment shown in FIG. 1, and are given the same reference numerals and explanations will be omitted.

The present invention has the above structure and can be used as described above, so the length of the stem that protrudes upward when the spray head is fitted onto the upper end can be extremely short compared to the case of conventional manual sprayers. Therefore, even though it is a manual sprayer, unlike an aerosol sprayer, the spray head does not get in the way, so the packaging does not become too large, and the second cylinder can be moved by simply moving the operating member up and down. This operation is extremely simple because the high-pressure liquid enters the second cylinder.A piston is provided in the second cylinder in an upwardly biased state, and the liquid in the cylinder is highly pressurized by the bias, so the spray head It is possible to spray by just slightly pressing down the spray head, and since the pressing down of the spray head is not for pushing down a piston as in the conventional case, it can be pushed down with a small force.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of the sprayer of the present invention, and FIG. 2 is a longitudinal sectional view of the sprayer according to another embodiment. 1... Container body, 3... Main member, 11... Operating member.

Claims (1)

[Scope of utility model registration request] A container body 1 with a neck part 2 erected upward, a lower part of a first circumferential wall 4 removably fitted to the outer surface of the neck part, and a flange-shaped wall 5 protruding from the inner surface of an intermediate part of the first circumferential wall. The first cylinder 6 is engaged with the mouth top surface of the mouth and neck part, and the first cylinder 6 is held vertically by the inner peripheral edge of the flange-like wall, and is suspended from the bottom wall 7 of the first cylinder via the suction valve 8. The suction pipe 9 is connected to the main member 3 with the first cylinder hanging down inside the container body, and to the outer surface of the first peripheral wall 4 and the top wall 13.
Fitting a second circumferential wall 12 extending vertically from the outer periphery, and fitting a third circumferential wall 14 vertically extending from the rear surface of the top wall in watertight contact with the inner wall surface of the first cylinder;
In addition, a second cylinder 17 whose lower end surface is closed and is held by the third peripheral wall 14 is disposed within the third peripheral wall 14, and a second cylinder 17 whose lower end face is closed is disposed within the third peripheral wall 14.
A flow path is provided between the cylinder bottom wall 7, the inner surface of the third circumferential wall, and the lower surface of the top wall, and the flow path is provided between the suction valve 8 and the upper edge of the second cylinder. A second suction valve 16 is provided, and a discharge valve that is opened when the stem is lowered is provided at the lower end of the stem 21, which is attached to the stem 21 in an upward biased state by passing through the center of the top wall airtightly, and a nozzle is provided at the upper end of the stem. It consists of an operating member 11 with a spray head to which a spray head 22 with a hole is respectively attached, and a piston 18 fitted into the second cylinder with an upward bias. 11 can be moved up and down, and the discharge valve is located between the second suction valve 16 and the lower surface of the top wall of the operating member.