JPS6026844Y2 - Manual small sprayer - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a small hand-operated sprayer, and more specifically to a hand-operated vertical reciprocating pump-type compact sprayer.

Various types of sprayers have been known in the past, but
The present invention proposes an excellent atomizer having many other advantages such as a simple member structure and the ability to produce a good mist in use.

Referring to FIG. 1 below, the main components of the present sprayer include an outer cylinder member, a cylinder member with a cylinder, a plunger, and a spray head.

The outer cylindrical member 1 has an engaging cylinder 5 which has an engaging protrusion 4 provided around the inner edge of the upper end from the upper end of the peripheral wall 2 screwed to the neck part 33 of the container body 32 via the inward step 3. A flange fitting i2a is provided around the inner surface of the upper end of the peripheral wall 2.

The cylinder-equipped member 6 has a cylinder 10 having a suction valve 9 on the bottom wall extending from the lower end of a guide tube 8 having a flange 7 attached to the upper end, and outside air is introduced into the inner surface of the intermediate portion of the guide tube 8. A groove 11 is provided, and an outside air introduction hole 12 is provided at the lower end.

In addition, a passage forming means 13 is provided on the inner wall surface of the lower part of the cylinder by means of a groove or a protrusion.

A suction pipe fitting cylinder 14 is preferably provided vertically from the lower end of the cylinder, and the upper end of the suction pipe 15 is fitted into the cylinder to form a suction path from the container body to the suction valve.

The cylindrical member is constructed by fitting the peripheral edge of the outward flange 7 into the flange groove 2a to form the outer cylindrical member peripheral wall 2.
It is made to hang vertically into the container by screwing it into the liquid inside the container.

16 is a plunger, and elastic skirt-like parts 17, 18, and 19 are attached to the outer periphery of the lower end, middle part, and upper end.

The lower end elastic skirt part 19 can be fitted into the cylinder, and the middle elastic skirt part 18 can be fitted into the guide tube 8 in a watertight or airtight manner so as to be movable up and down. It has a larger outer diameter than the skirt-like portion 17 so that it can be fitted into a large-diameter cylinder to be described later.

The plunger also has an internal passageway 2 extending from the lower end surface to the upper end surface.
has 0.

The internal passage may be formed between the plunger by forming the outer cylinder 16a and a core member 16b that is fitted and fixed into the outer cylinder.

As shown in the illustrated example, the core material may be fitted only into the upper half of the outer cylinder, and the lower end may be made hollow to form a spring insertion chamber.

A discharge valve body 16a is made to protrude upward from the upper end surface of the plunger.

The spray head 21 has a peripheral wall 24 vertically provided with an engaging protrusion 23 from the peripheral edge of the top wall 22 to the outer edge of the lower edge, and a cylinder having a larger inner diameter than the cylinder described above is inserted from the back surface of the top wall inside the peripheral wall. The diameter cylinder 25 is vertically installed.

The peripheral wall 24 is fitted into the aforementioned retaining cylinder so as to be able to move up and down, and the engagement of the engaging protrusions 4 and 23 prevents the spray head from being pulled out.

A discharge valve hole 26 is formed in the back surface of the central portion of the top wall 22, and a discharge passage 28 communicates between the deep part of the hole and a nozzle hole 27 formed in the upper side surface of the peripheral wall.

The upper end of the plunger is fitted into the large diameter cylinder 25 by pressing the upper end elastic skirt 19 into the large diameter cylinder 25 so as to be movable up and down, and the discharge valve body 16a and the discharge valve hole 26 form a discharge valve 29.

A spring 30 for pushing up the plunger is interposed between the bottom of the cylinder and the plunger.

In this state, the discharge valve body 16a is in contact with the circumferential surface of the discharge valve hole and pushes up the spray head 21 in the discharge valve closed state, but the engagement protrusion 4,
The engagement of 23 prevents the spray head from being pulled out from the engagement cylinder 5.

Note that 31 is a cap and may be provided as necessary.

In the illustrated state where the plunger 16 is at the upper limit of its stroke, the elastic skirt-like portions are located within the upper end of the cylinder, respectively.
It should be located within the upper end of the guide cylinder and within the upper end of the large diameter cylinder.

Further, when the intermediate elastic skirt portion 18 is positioned inward of the outside air introduction groove 11 during the stroke, a flow path is formed from the upper end opening of the guide cylinder to the outside air introduction hole 12 through the groove, and furthermore, as the plunger strokes. When the lower end position is reached, the lower end elastic skirt portion 17 is located inside the passage forming means 13 to form a passage communicating between the pump pressurizing chamber and the container body via the means and the outside air introduction hole 12, Also, at this time, the intermediate elastic skirt-like portion 18 is in watertight contact with the inner wall surface of the guide cylinder between it and the outside air introduction hole.

When the spray head 21 is pushed down in the above configuration, the pressure inside the pressurizing chamber of the pump becomes high because the suction valve 9 and the discharge valve 29 are closed. When the plunger is lowered relative to the pump, the discharge valve 29 is opened, and high-pressure air is discharged from the nozzle hole 27 when there is air in the pump pressurizing chamber, that is, when the atomizer is used for the first time.

When the lower end elastic skirt portion 17 is located inside the passage forming means 13 at the lower stroke limit, a passage into the container body is formed, so that the high pressure air in the pump pressurizing chamber, that is, the residual pressure, flows from the outside air introduction hole 12 into the container body. be discharged.

Simultaneously with the release of the high pressure state, the plunger rises relative to the spray head due to the push-up of the spring, closing the discharge valve 29. When the push-down of the spray head is released, both the plunger and the spray head rise, and this rise causes the pump to pump. Since the pressurized chamber becomes negative pressure, the suction valve 9 is opened and the liquid inside the container is sucked into the pump pressurized chamber.

The next time you push down the spray head, the liquid inside the pump pressurized chamber will be sprayed.

Due to the decrease in liquid, there should be negative pressure inside the container, but
When the intermediate elastic skirt portion 18 is located inside the outside air introduction groove 11, an outside air introduction path is formed between the upper end opening of the guide cylinder and the outside air introduction hole 12 through the groove, so that the pressure is reduced to negative. is prevented.

In the above embodiment, an example is shown in which the outer cylinder member 1 and the member with cylinder 6, and the outer cylinder 16a and core material 6b of the plunger 16 are each molded separately and fixed together. These can also be integrally molded as shown in FIG.

In this case, the outer tube 16a and the core material 16b are connected by a plurality of connecting portions 16c.

Since the discharge valve body is placed in pressure contact with the discharge valve hole so that the discharge valve is elastically closed, the atomization will not be incomplete due to lack of spray pressure at the beginning of spraying, and the discharge valve will be elastically closed. In this case, it will be difficult to replace the air and liquid in the pump pressurizing chamber when using the sprayer for the first time, but at 11GI below the stroke of the plunger, the flow path for discharging the residual pressure is connected to the passage forming means 13 and outside air is introduced. The hole 12 is formed between the pump pressurizing chamber and the inside of the container to eliminate the high pressure state in the pump pressurizing chamber, so when the plunger rises, the negative pressure is incomplete and the pump pressurizing chamber There is no possibility that the suction of liquid into the container will become insufficient.

Since the outside air introduction path is also formed during the descent of the plunger, there is no need to worry about negative pressure inside the container, and since the outside air introduction path is blocked when the plunger is at the upper limit of its stroke, the atomizer will not tip over with the container body. However, there is no risk of liquid leaking from the outside air introduction path.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of the present invention sprayer, and FIG. 2 is a longitudinal sectional view of the present invention sprayer shown in another embodiment. 1... Outer cylinder member, 6... Member with cylinder, 16... Plunger, 21...
Spout n head.

Claims (1)

[Scope of utility model registration request] A peripheral wall 2 is screwed onto the container holiday head 33, and is vertically extended from the inner surface of the upper end of the peripheral wall via a flange 7, with an outside air introduction groove 11 formed on the inner surface of the intermediate portion, and an outside air introduction hole 12 formed at the lower end. A guide cylinder 8 is installed, a cylinder 10 is installed vertically from the lower end of the guide cylinder, and has a suction valve 9 on the bottom wall and a passage forming means 13 on the inner surface of the lower part; Elastic skirt-like parts 17, 18, and 19 are attached, and the lower end elastic skirt-like part 17 is fitted into the cylinder, and the middle elastic skirt-like part 18 is fitted into the guide tube 8 in a watertight and slidable manner, and A plunger 16 has an internal passage 20 extending from an end face to an upper end face, and has a discharge valve body 16a projecting upward from the upper end face, and a large diameter cylinder 25 having a larger inner diameter than the above-mentioned cylinder and hanging from the back surface of the top wall 22. The upper end elastic skirt portion 19 is pressed and fitted in a watertight manner,
On the back side of the top wall 22, there is a nozzle hole 2 opened on the upper side of the peripheral wall.
7 and a spray head 21 having a discharge valve hole 26 which communicates with the discharge passage 28, and a discharge valve body by interposing a spring 30 for pushing up the plunger between the bottom of the cylinder and the plunger. A discharge valve 29 is formed as the discharge valve hole, and when the intermediate elastic skirt portion is positioned inside the outside air introduction groove during the stroke, an outside air introduction path into the container body is formed through the groove and the outside air introduction hole. , and when the plunger is located at the lower limit of the stroke, the intermediate elastic skirt-like part is between the outside air introduction groove and the outside air introduction hole, and the lower end elastic skirt-like part is inside the passage forming means 13 provided on the inner wall surface of the lower part of the cylinder. A small manual sprayer characterized in that a passage can be formed in the pump pressurizing chamber and the container body through the means and the outside air introduction hole.