JPS6024425Y2 - Manual small sprayer - Google Patents

Description

[Detailed explanation of the idea] This proposal concerns a small hand-operated 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 is designed to eliminate the above-mentioned drawbacks and to be convenient in use, and will be described below with reference to the drawings.

The sprayer of this invention has a cylinder member A, an injection pipe member B, and a spray head C as main members, and also has a coil spring D.
and a suction pipe E as additional members.

The cylinder member A has a cylinder part 2 with a small inner diameter part 1 at the lower part, and has an outwardly flange-shaped top wall part 3 protruding from its upper end and a screw thread from the outer periphery to the neck of the container body. A peripheral wall 4 for use is vertically installed.

It is preferable to provide a thread 5 for screwing the mouth portion on the inner surface of the peripheral wall.

Further, a holding cylinder portion 7 having a first engaging protrusion 6 at its upper end projects from the upper peripheral edge portion on the inner side of the top wall portion.

An upward step 8 is provided on the inner surface of the lower part of the cylinder part to form a small inner diameter part, but as in the embodiment shown in FIG. You can also use it as

It is preferable to attach a protrusion 10 to the upper end of the inner cylindrical portion or the upper end of the small inner diameter portion to be in watertight contact with the outer surface of the rod portion, which will be described later.

The lower part of the body 11 of the injection pipe member B is inserted into the cylinder part, and a first skirt part 12 is attached to the outer periphery of the flat end thereof so as to be in elastic and watertight contact with the inner wall surface of the cylinder part.

Further, a second skirt portion 14 is attached to the upper end of the body to form a discharge valve 13 by elastically and watertightly contacting the inner wall surface of the spray head, which will be described later.

The skirt portion may be formed at the upper end as shown in FIGS. 1 and 2, or may be provided around the outer surface slightly below the upper end as in the embodiment shown in FIG. 3.

In this case, as shown in the figure, the upper end portion is formed into a small diameter portion 16 via an upward step portion 15, and a through hole 17 is provided in the small outer diameter portion located below the second skirt portion.

Incidentally, as shown in FIG. 1, a third skirt portion 18 for preventing liquid leakage may be attached to the outer surface of the intermediate portion of the body.

The spray head C extends from the top wall 21 to the peripheral wall 2 having nozzles 22.
3 is vertically disposed, and the peripheral wall thereof is fitted into the holding cylinder part 7 so as to be freely movable downward.

A second engagement protrusion 24 is attached to the lower end of the peripheral wall, and engagement with the first engagement protrusion prevents the second engagement protrusion 24 from being pulled out.

In addition, a rod portion 25 is vertically provided from the back surface of the center of the top wall, and the injection pipe member is fitted into the rod portion in a penetrating state, and the lower portion of the rod portion 25 can be watertightly fitted into the small inner diameter portion 1 when the spray head is pressed down. shall be.

The suction valve 26 is formed by this fitting.

A coil spring D is installed between the upward step portion 8 and the lower surface of the injection pipe member, and a suction pipe E that reaches the bottom surface of the container body is fitted into the small inner diameter portion 1.

In the above configuration, when the spray head C is pushed down with air initially present in the cylinder section, the suction valve 26 is closed and the discharge valve 13 is also closed, so that a pressurized chamber consisting of the inside of the cylinder section and the inside of the injection pipe member The inside of 31 is pressurized, and as the pressure increases, the discharge valve opens and discharges from the nozzle hole.

When the spray head stops descending, the discharge valve closes, and when you release your hand, the coil spring pushes up the spray head, etc. At the same time, the pressurized chamber becomes negative pressure, so when the lower end of the rod leaves the small inner diameter part. The liquid inside the container is sucked in.

In this way, the liquid in the pressurized chamber is sprayed by pressing down the spray head from the next time onwards.

Incidentally, negative pressure caused by a decrease in the liquid inside the container is prevented by the inflow of outside air from the through hole 17 of the cylinder member when the spray head is lowered.

Since this project has the above-mentioned structure, there are only three main parts, including the spring and the suction pipe, which can be used as the top part.Therefore, the material cost is low, and the assembly process etc. can be reduced, so the price can be lowered, and the spray head can be lowered. A long rod is hung from the back of the top wall of the container, and the lower part of the rod is used as the valve body of the suction valve, so the container cannot be used with the container upside down, as would be the case if a ball valve was used, for example. In addition, since the injection pipe member is fitted to the rod part, the space from the bottom of the member to the discharge valve at the upper end, that is, the incompressible space of the pressurized chamber consisting of the cylinder member and the injection pipe member B. The pump function can be enhanced by making it as narrow as possible.

Furthermore, since the injection tube member is tubular and there is no need to provide a partition wall or the like inside the injection tube member, the structure can be simplified and costs can be reduced.

[Brief explanation of drawings]

FIG. 1 is a sectional view of the sprayer of the present invention, FIG. 2 is a sectional view showing another embodiment, and FIG. 3 is a sectional view of a main part of another embodiment. A: Cylinder member, B: Injection pipe member, C: Spray head, D: Coil spring, E: Suction pipe.

Claims (1)

[Scope of utility model registration request] An outward flange-shaped top wall 3 projects from the upper end of the cylinder portion 2 having a small circular diameter portion 1 at the bottom, and a peripheral wall 4 is suspended from the outer periphery of the top wall 3. A cylinder member A having a holding cylinder part 7 having a first engagement protrusion 6 at the upper end protrudes from the peripheral edge thereof, and a cylinder member A having a lower body part inserted into the cylinder part, and the outer periphery of the lower end part having the inner part of the cylinder part. An injection pipe member B has a first skirt part 12 vertically disposed in watertight and elastic contact with a wall surface and a second skirt part 14 attached to the upper end thereof, and a nozzle hole 22 extending from the top wall 21.
A second engaging protrusion 24 is formed on the lower end of the peripheral wall 23 vertically disposed so that the circumferential wall can move up and down with respect to the holding cylinder 7, and a second engaging protrusion 24 is drawn out from the first engaging protrusion 6 at the lower part thereof. A rod portion 25 is vertically provided on the back surface of the top wall so that the rod portion penetrates the injection pipe member B, and the lower end portion of the rod portion can be inserted into the small inner diameter portion 1 in a watertight manner. When the injection pipe member B and the spray head C are at their upper limits, the small inner diameter portion 1 The suction valve 26 formed by and the lower part of the rod part 25 is open, and the discharge valve 13 formed by the second skirt part 14 and the inner wall surface of the spray head in pressure contact with the skirt part is in a closed state, and the spray head When pressed down, the lower part of the rod part is inserted into the small inner diameter part and the suction valve 26 is closed, and the discharge valve 13 is opened by increasing the pressure in the pressurizing chamber 31 consisting of the cylinder part and the injection pipe member. A small manual sprayer characterized by: