JP2002192029A - Trigger type liquid sprayer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the sealing performance between an intake and a body in members consisting the sprayer in a trigger type liquid sprayer. SOLUTION: The trigger type liquid sprayer is constituted of the body provided with a nozzle at the tip part, the intake having an opening for introducing air into the vessel main body and provided with a check valve for preventing the back flow inside the opening and a screw cap for fixing the intake to the opening of the vessel main body to hold as the intake is connected to the body and the leakage of a liquid flowing out inevitably from the opening is prevented by making at least the tip part to contact with the body and providing a sealing member to the intake to keep the mating surface to the body water tightly.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trigger type liquid ejector, and an object thereof is to surely prevent liquid from leaking from between a body and an intic constituting the ejector.

[0002]

2. Description of the Related Art A trigger type liquid ejector is frequently used for a container filled with a fungicide, a detergent, etc., and generally has a nozzle 20 at its tip end as shown in FIG.
, An intik 22 which is combined with the body portion 21 and has a check valve therein for preventing backflow of liquid, and the intik 22 is fixedly held together with the body portion 21 in the mouth 23 of the container. And a screw-type cap 24.

According to such an ejector, its body portion 2
By repeatedly towing the trigger 25 attached to 1, the piston 26 connected thereto is actuated, and the suction and pressurization of the liquid are alternately and efficiently performed within the piston cylinder 27, through the intic 22 and the body portion 21. The liquid in the container body can be continuously ejected from the nozzle 20.

[0004] In the conventional trigger type ejector, the intik 22 is securely fixed because it is sandwiched between the mouth of the container body and the cap 24 screwed to the mouth 23 via the sealing member 28. While the body 21
Is connected to the concave portion provided in the body portion 21, and both are retained by the undercut so that the protruding end portion of the intic 22 is inserted into the container body. An opening 29 is provided to prevent the container from being decompressed and deformed by introducing the atmosphere. There is also a concern that leakage may occur, and further improvement in sealing performance is required.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a novel trigger type liquid ejector capable of improving the sealing performance without complicating the structure or increasing the number of components. Is to propose.

[0006]

SUMMARY OF THE INVENTION The present invention provides a body having a nozzle mounted on a tip portion thereof, an intique combined with the body and having a check valve therein for preventing backflow of a liquid, and the intic with the body. Consisting of a screw cap fixedly held at the mouth of the container body, the piston is reciprocated by pulling and releasing the trigger, and the liquid in the container body is sucked into the piston cylinder and pressurized, and the intik and the body are pressed. A liquid ejector of a trigger type that continuously ejects liquid from the tip of the nozzle through the intic, by contacting at least the tip of the intic with a body, and maintaining a liquid-tight state at a mating surface with the body. A trigger type liquid ejector characterized by comprising a seal member for preventing leakage of liquid inevitably flowing out from the opening. .

[0007] In the ejector having the above structure, the seal member is desirably formed integrally with the intik and formed as a wall surrounding the opening for introducing the atmosphere.

It is particularly preferable that the seal member be elastically deformed in order to realize a reliable seal.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION In the vicinity of an opening provided in an intik, a seal member which rises directly from the intik and comes into contact with the inside of a body is provided. I do.

[00010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described more specifically with reference to the drawings. FIG. 1 shows a trigger type liquid ejector according to the present invention. In the figure, reference numeral 1 denotes a body, 2 denotes a nozzle mounted on the tip of the body 1, 3 denotes an intake, and the intake 3 includes a base portion 3a and the base 3a. A tube 3b integrally formed with the portion 3a and inserted into the body 1; and a sealing member 3c similarly formed integrally with the base portion 3a and in contact with the inside of the body 1 to maintain a liquid-tight state. An opening 3d for introducing the atmosphere is provided in the protruding end portion to guide the trigger more effectively.

Reference numeral 4 denotes a screw cap fixedly held to the mouth 5 of the container body, 6 denotes a sealing member arranged between the intik 3 and the mouth 5, and 8 denotes an intic 3
And a suction pipe for sucking the liquid in the container body.

The body 1 has therein a passage 1a for supplying the liquid in the container body to the nozzle 2, and further includes a piston for alternately sucking and pressurizing the liquid. 1b and a piston cylinder 1c which slidably houses the piston 1b and forms a space r between them.
And a trigger 1d for controlling the pressing of the piston 1b.

The base portion 3a of the intik 3 fits into an annular space 1e of the body 1 as shown in FIG.
As shown in FIG.
The intic 3 and the body 1 are connected by engagement by so-called undercuts, in which the protrusions 3e, 3f provided on the inner and outer surfaces of the body a fit into the recesses 1f, 1g of the wall forming the annular space 1e of the body 1. It is supposed to be.

In this example, the seal member 3c of the intic 3 is shown as a wall that rises directly from the upper end of the base portion 3a and surrounds the opening 3d, and the tip portion contacts the body 1 and contacts the intic 3. The mating surface is maintained in a liquid-tight state to prevent leakage of the liquid inevitably flowing out of the opening 3d.

The intik 3 is fixedly held to the mouth 5 of the container body by the cap 4 while maintaining the connection state with the body 1, and the cap 4 is a guide wall 4 a surrounding the connection region of the body 1 and the intik 3. Prevents the body 1 from tilting.

FIGS. 4 to 6 show perspective, side, plan and external perspective views, respectively, of the intake 3 of the ejector according to the present invention, and FIG. 7 shows an external perspective view of an intic used in a conventional ejector. .

In an ejector incorporating an intique as shown in FIG. 7 and having a structure as shown in FIG. 8, for example, when it is assumed that a container body filled with liquid is ejected sideways, the liquid is discharged into the atmosphere. Hole 2 for inflow of water
9 may leak from the body portion 21 and the intic 22 in some cases, but in the present invention, when the liquid is jetted, the liquid flows out of the opening 3d. Even in such a case, the sealing is surely performed by the sealing member 3c.

In order to eject liquid by the trigger type liquid ejector having the structure shown in FIG. 1, the following procedure is followed.

First, the trigger 1d is pulled in accordance with the arrow, and the piston 1b is pressed and brought into contact with the end of the piston cylinder 1c. At this time, the atmosphere is introduced into the container body through the opening h provided in the side wall of the piston cylinder 1c and the opening 3d connected to the opening h.

When the towing of the trigger 1d is released in this state, the piston 1b returns to the initial position by the elastic force of the spring s contained therein, and at this time, the space r
Since the pressure becomes negative, the liquid in the container body flows into the space r via the suction pipe 8 and the port P.

When the trigger 1d is further pulled and the piston 1b is pressed following this state, the liquid flowing into the space r is pressurized and discharged from the port P. At this time, the passage of Intiku 3 is held in the closed state by the check valve v, pressurized liquid passes through the second port P ₁ and the passage 1a of the body 1, it is injected toward the tip of the nozzle 2 to the outside world Thus, by repeating this series of operations a plurality of times, continuous injection becomes possible.

In the injector according to the present invention, the seal member 3c of the intic 3 is made of a material that can be elastically deformed by thinning or the like, and the tip of the seal member 3c always contacts the inner wall surface of the body 1. In order to introduce a more advantageous seal, it is also possible to provide a convex portion 1h as shown in FIG. 9 integral with the wall surface of the body 1 in contact with the seal member 3c.

The trigger type liquid ejector according to the present invention can be made of a synthetic resin, and an injection molding method is applied to manufacture each component.

[0024]

According to the present invention, the sealing performance between the intik and the body can be further enhanced, without complicating the structure or increasing the number of parts.

[Brief description of the drawings]

FIG. 1 is a configuration explanatory view of a trigger type liquid ejector according to the present invention.

FIG. 2 is a view showing an annular space of a body.

FIG. 3 is an enlarged view of a connecting portion between a body and an intique.

FIG. 4 is a diagram showing a side surface of an intique;

FIG. 5 is a diagram showing a plane of an intik.

FIG. 6 is an external perspective view of an intik.

FIG. 7 is an external perspective view of an intic used in a conventional ejector.

FIG. 8 is a view showing a configuration of a conventional trigger type liquid ejector.

FIG. 9 is an enlarged view showing a connection portion between the body and the intique.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Body 1a Passage 1b Piston 1c Piston cylinder 1d Trigger 1e Annular space 1f Concave part 1g Concave part 1h Convex part 2 Nozzle 3 Intake 3a Base part 3b Roat part 3c Seal member 3d Opening 3e Convex part 3f Convex part 4 Guide screw cap 5 mouth 6 seal member 8 suction pipe 9 body 10 intik 11 screw cap 20 nozzle 21 body part 22 intik 23 mouth 24 cap 25 trigger 26 piston 27 piston cylinder 28 seal member 29 opening h opening r space v check valve P port P ₁ second port

 ────────────────────────────────────────────────── ─── Continued on the front page F term (reference) 3E014 PA01 PB02 PC03 PD12 PD13 PE03 PF10 3E084 AA04 AA12 AA24 AB01 BA02 FB01 GA04 GB04 LB02 LC01 LD22 LD26 LD30

Claims (3)

[Claims] 1. A body having a nozzle at a tip portion, an intique having an opening for introducing air into a container body and having a check valve therein for preventing a backflow of liquid, and connecting the intic to the body. It consists of a screw cap that is fixed and held at the mouth of the container main body while the trigger is being pulled and released, causing the piston to reciprocate, sucking the liquid in the container main body into the piston cylinder, pressurizing it, and applying pressure. A trigger-type liquid ejector for continuously ejecting liquid from a tip of a nozzle through a body, wherein at least the tip portion of the intic is brought into contact with the body to maintain a liquid-tight state at a mating surface with the body. A trigger type liquid ejector comprising a seal member for preventing leakage of liquid unavoidably flowing out of the opening. 2. The trigger type liquid ejector according to claim 1, wherein the seal member is formed integrally with the intique, and comprises a wall portion surrounding an opening for introducing the atmosphere. 3. The seal member is elastically deformed.
A trigger type liquid ejector according to claim 1 or 2.