JP3937125B2 - Trigger type liquid ejector - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a trigger type liquid ejector, and is intended to surely prevent leakage of liquid from between a body and an intick constituting the ejector.
[0002]
[Prior art]
The trigger type liquid ejector is often used in a container filled with a mildew agent, a detergent, or the like, and generally includes a body portion 21 having a nozzle 20 attached to a tip portion as shown in FIG. Ink 22 that is combined with body part 21 and has a check valve for preventing the backflow of liquid inside, and screw-type cap 24 that holds and holds the intick 22 together with body part 21 at mouth 23 of the container. It is made up of.
[0003]
According to such an ejector, by repeatedly checking the trigger 25 attached to the body portion 21, the piston 26 connected to the trigger 25 is operated, and suction and pressurization of liquid are alternately and efficiently performed in the piston cylinder 27. The liquid in the container body can be continuously ejected from the nozzle 20 through the intic 22 and the body portion 21.
[0004]
Here, the conventional trigger type ejector is securely fixed because the Intick 22 is sandwiched between the mouth portion of the container main body and the cap 24 screwed to the mouth portion 23 via the seal member 28. On the other hand, the connection between the body 21 and the intick 22 is such that the tip of the intick 22 is fitted into a recess provided in the body part 21 and both of them are held off by undercuts. An opening 29 is provided to introduce atmospheric air into the container body to prevent the container from being deformed under reduced pressure. When liquid in the container body flows out of the opening 29, the mating surface of the body portion 21 and the intick 22 There is also concern about leakage to the outside through this, and further improvement in sealing performance is required.
[0005]
[Problems to be solved by the invention]
An object of the present invention is to propose a novel trigger type liquid ejector that can improve the sealing performance without increasing the complexity of the structure or increasing the number of components.
[0006]
[Means for Solving the Problems]
The present invention includes a body in which a nozzle is attached to a tip portion, an intique that is combined with the body and includes a check valve for preventing a backflow of liquid, and the intick is fixedly held at the mouth of the container body together with the body. It consists of a screw cap,
By triggering and releasing the trigger, the piston is reciprocated to suck the liquid in the container body into the piston cylinder and pressurize it to continuously eject the liquid from the tip of the nozzle through the intake and body. A liquid ejector,
An elastically deformable seal member that prevents at least the tip portion of the intic from contacting the body, maintains a liquid-tight state on the mating surface with the body, and prevents leakage of liquid that inevitably flows out of the opening. Place and
The trigger type liquid ejector according to claim 1, wherein a convex portion integrated with the wall surface is provided on the wall surface of the body with which a tip portion of the seal member contacts .
[0007]
In the ejector configured as described above, it is desirable that the seal member be formed integrally with the intic and be a wall portion surrounding the opening for introducing the atmosphere.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
In the vicinity of the opening provided in the intick, a seal member that rises directly from the intick and contacts the inside of the body is provided, and the seal is sealed between the intick and the body.
[0010]
【Example】
Hereinafter, the present invention will be described more specifically with reference to the drawings.
FIG. 1 shows a trigger-type liquid ejector . In the figure, 1 is a body, 2 is a nozzle attached to the tip of the body 1, 3 is an intake, and this intake 3 is a base portion 3a and a base portion 3a. A tube 3b that is integrally formed and inserted into the body 1, and a seal member 3c that is also integrally formed with the base portion 3a and that is in contact with the inside of the body 1 and is held in a liquid-tight state are provided at the protruding end portion of the base portion 3a. Is provided with an opening 3d for introducing the atmosphere to guide the trigger check more advantageously.
[0011]
Also, 4 is a screw cap that is fixedly held in the mouth portion 5 of the container body, 6 is a seal member that is disposed between the intic 3 and the mouth portion 5, and 8 is connected to the intic 3 to allow liquid in the container body to flow. This is a suction pipe for sucking.
[0012]
The body 1 has a passage 1a for supplying the liquid in the container body to the nozzle 2 therein, and further includes a piston 1b for alternately sucking and pressurizing the liquid, A piston cylinder 1c that slidably houses the piston 1b and forms a space r therebetween, and a trigger 1d that controls pressing of the piston 1b are provided.
[0013]
The base portion 3a of the intique 3 is fitted into the annular space 1e of the body 1 as shown in FIG. 2, and the state thereof is enlarged and as shown in FIG. 3, the convex portions provided on the inner and outer surfaces of the base portion 3a. The portions 3e and 3f are connected to the intic 3 and the body 1 by engagement by so-called undercut, which is adapted to the concave portions 1f and 1g of the wall surface forming the annular space 1e of the body 1.
[0014]
In this example, the sealing member 3c of the intique 3 is shown as a wall portion that rises directly from the upper end of the base portion 3a and surrounds the opening 3d, and the tip portion thereof contacts the body 1 to form a mating surface with the intic 3 Leakage of liquid inevitably flowing out from the opening 3d is prevented by maintaining the liquid tight state.
[0015]
Intique 3 is held in a state where it is connected to body 1 and is fixedly held to mouth 5 of the container body by cap 4, and cap 4 is attached to body 1 by guide wall 4 a surrounding the connecting region of body 1 and intique 3. Prevent the tilt of 1.
[0016]
FIGS. 4 to 6 show a side view, a plan view, and an external perspective view of the intic 3 of the trigger type liquid ejector, respectively, and FIG. 7 shows an external perspective view of the intic used in the conventional ejector.
[0017]
In the ejector having the structure as shown in FIG. 8 incorporating the intic as shown in FIG. 7, for example, assuming that the container body filled with the liquid is ejected sideways, the liquid flows in the atmosphere. It flows out from the opening 29, but spilled liquids which may case leaking from between the body portion 21 and Intiku 22 occurs in the upper掲図1-6 triggered liquid ejector shown, jetting liquid In this case, even if the liquid flows out from the opening 3d, it is surely sealed by the seal member 3c.
[0018]
In order to eject liquid by the trigger type liquid ejector having the configuration shown in FIG. 1, the following procedure is followed.
[0019]
First, the trigger 1d is checked according to 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.
[0020]
When the check of the trigger 1d is released in this state, the piston 1b is returned to the initial position by the elastic force of the spring s incorporated therein, and the space r becomes negative pressure at that time. The liquid flows into the space r through the suction pipe 8 and the port P.
[0021]
If the trigger 1d is further checked and the piston 1b is pressed subsequently to 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, continuous injection is possible by repeating this series of operations a plurality of times.
[0022]
Injector according to the invention, with the seal member 3c of Intiku 3 is left as constituted by those elastically deformable by thinning or the like, the tip portion is always in contact against the inner wall surface of the body 1, more In order to introduce an advantageous seal, a convex portion 1h as shown in FIG. 9 is provided on the wall surface of the body 1 with which the seal member 3c comes into contact .
[0023]
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 constituent member.
[0024]
【The invention's effect】
According to the present invention, it is possible to further enhance the sealing performance particularly between the Intique and the body without causing a complicated structure and an increase in the number of parts.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a configuration of a trigger type liquid ejector.
FIG. 2 is a view showing an annular space of a body.
FIG. 3 is an enlarged view showing a connecting portion between a body and an intick.
FIG. 4 is a view showing a side surface of an intick.
FIG. 5 is a view showing a plane of an intick.
FIG. 6 is an external perspective view of an intic.
FIG. 7 is an external perspective view of an intic used in a conventional ejector.
FIG. 8 is a diagram showing a configuration of a conventional trigger type liquid ejector.
FIG. 9 is an enlarged view showing a connecting portion between a body and an intick.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Body 1a Passage 1b Piston 1c Piston cylinder 1d Trigger 1e Annular space 1f Concave 1g Concave 1h Convex 2 Nozzle 3 Ink 3a Base part 3b Roto part 3c Seal member 3d Opening 3e Convex part 3f Convex part 4 Screw cap 4a Guide wall 5 Portion 6 Sealing member 8 Suction pipe 9 Body
10 Intic
11 Screw cap 20 Nozzle 21 Body part 22 Intick 23 Port 24 Cap 25 Trigger 26 Piston 27 Piston cylinder 28 Seal member 29 Open hole h Open hole r Space v Check valve P Port P ₁ 2nd port

Claims (2)

A body with a nozzle at the tip, an int with an opening for introducing air into the container body and a check valve for preventing liquid backflow inside the container body, and the container body with the intique connected to the body It consists of a screw cap that is fixedly held in the mouth,
A trigger-type liquid that causes the piston to reciprocate by checking and releasing the trigger, sucking the liquid in the container body into the piston cylinder, and pressurizing the liquid continuously from the tip of the nozzle through the intake and the body. An ejector,
An elastically deformable seal member is disposed on the intic so that at least a tip portion thereof is brought into contact with the body and a liquid-tight state at a mating surface with the body is maintained to prevent leakage of liquid inevitably flowing out from the opening. And
A trigger type liquid ejector characterized in that a convex portion integrated with the wall surface is provided on the wall surface of the body with which the tip portion of the seal member contacts .   2. The trigger type liquid ejector according to claim 1, wherein the seal member is formed integrally with the intic and includes a wall portion surrounding the opening for introducing the atmosphere.

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