JP3929241B2 - 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 reliably avoid the removal of the body from the intick when the body and the intick that constitute the ejector are connected.
[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 has a structure including a body part 21 having a nozzle 20 attached to a tip part 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]
The Intic 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, while the body 21 and the Intic 22 are formed on the convex portion on the side wall of the Intic 22. It is retained by a so-called undercut c that fits into the recess of the body portion 21.
[0004]
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. In practice, the liquid in the container body can be continuously ejected from the nozzle 20 through the intic 22 and the body portion 21, but an excessive force against the connecting portion of the body portion 21 and the intic 22 is applied. In this case, there is a concern that the engagement due to the undercut is disengaged and the body portion 21 falls out of the intick 22, so that a stronger connection between the two members is desired for further safety.
[0005]
In this regard, an attempt was made to make the recess deeper in order to strengthen the engagement by the undercut. However, since this type of member is usually formed by injection, the recess was made deeper. In some cases, the molded member cannot be removed from the mold.
[0006]
[Problems to be solved by the invention]
An object of the present invention is to provide a novel trigger-type liquid that can connect the intake and the body more firmly without causing problems in the molding of the constituent members and without complicating the structure or increasing the number of parts. It is in the position to propose an ejector.
[0007]
[Means for Solving the Problems]
The present invention includes a body having a nozzle at the tip, an opening having an opening for introducing air into the container body, and a check valve for preventing backflow of liquid therein, and the intick connected to the body. It consists of a screw cap that holds and holds the mouth of the container body,
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,
Providing the intic with a protrusion that protrudes in at least one place around it,
The body is provided with a through hole that fits the protrusion and firmly connects the intic and the body ,
Ink protrusions are adapted to the through-holes of the body, and the protrusions provided on the inner and outer surfaces of the base part of the intick are adapted to the recesses of the wall surface forming the annular space of the body,
In the trigger type liquid ejector, the cap may be provided with a guide surface having a large area that surrounds the connecting region of the intick and the body over a wide range in a connected state of the intick and the body .
[0008]
DETAILED DESCRIPTION OF THE INVENTION
A through hole is formed by drilling at least one place around the body at the same time as or after the body is molded. The intick is provided with a convex part that fits into the through hole of the body, and the convex part is fitted into the through hole of the body to firmly connect the two.
[0009]
【Example】
Hereinafter, the present invention will be described more specifically with reference to the drawings.
FIG. 1 is a sectional view showing the configuration of a trigger type liquid ejector according to the present invention.
In the figure, reference numeral 1 denotes a body. Reference numeral 2 denotes a nozzle attached to the front end portion of the body 1, and 3 denotes an intic. The intic 3 includes a base portion 3a and a tube 3b formed integrally with the base portion 3a and inserted into the body 1, and the base portion 3a. An opening 3c for introducing the atmosphere is provided in the protruding end portion of the, and at least one protruding portion 3d is provided around the base portion 3a.
[0010]
4 is a screw cap that is fixedly held in the mouth portion 5 of the container body, 6 is a seal member disposed between the intic 3 and the mouth portion 5, and 8 is connected to the intic 3 and sucks the liquid in the container body. For suction pipes.
[0011]
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 between the piston 1b, a trigger 1d that controls pressing of the piston 1b, and a through hole 1e that is formed by drilling are provided. ing.
[0012]
The base portion 3a of the intick 3 is adapted to be fitted into an annular space 1f of the body 1 as shown in FIG. 2, and the state is enlarged and provided in the base member 3a as shown in FIG. The projected portion 3d fits into the through hole 1e of the body 1, and similarly, the convex portions 3e and 3f provided on the inner and outer surfaces of the base portion 3a are the concave portions 1g on the wall surface forming the annular space 1f of the body 1. Int 3 and the body 1 are more firmly connected to each other by a so-called undercut that conforms to 1h.
[0013]
The Intique 3 is fixed and held at the mouth 5 of the container body by the cap 4 while maintaining a strong connection state with the body 1, but the cap 4 has a wide connection area between the body 1 and the intick 3. A guide surface 4a having a large surrounding area is provided to prevent the body 1 from shaking and tilting.
[0014]
FIG. 4 shows an external perspective view of the Intique 3, and FIG. 5 shows a partially broken external appearance of the body 1.
[0015]
In the trigger type liquid ejector according to the present invention, not only the engagement by undercut but also the structure in which the protrusion 3d of the intake 3 is adapted to the through hole 1e of the body 1, so that an excessive force is applied to the body 1. Even if it is done, the protrusion 3d remains in the through hole 1e, and the body 1 does not easily fall out of the intic 3.
[0016]
In order to inject the liquid in the container body with the trigger type liquid ejector having the configuration shown in FIG. 1, the following procedure is followed.
[0017]
First, when the trigger 1d is checked according to the arrow, the piston 1b is pressed and comes into contact with the end of the piston cylinder 1c.
[0018]
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.
[0019]
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.
[0020]
The protrusion 3d of the Intick 3 is shown as an example provided around the base portion 3a, but the number and installation position thereof can be changed as appropriate, and the drilling method is particularly limited in the present invention. Not. Further, if allowed by the structure of the structural member, the protrusion 3d provided in the intique 3 can be provided in the body 1, and the through hole 1e provided in the body 1 can be provided in the intik 3.
[0021]
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.
[0022]
【The invention's effect】
According to the present invention, since the protrusion provided on the base portion is adapted to the through hole of the body in addition to the engagement by the undercut, the intick and the body can be firmly connected. In addition, the structure is not complicated and the number of parts is not increased.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a configuration 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 showing a connecting portion between a body and an intick.
FIG. 4 is an external perspective view of an intic.
FIG. 5 is an external perspective view of a body.
FIG. 6 is a diagram showing a configuration of a conventional trigger type liquid ejector.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Body 1a Passage 1b Piston 1c Piston cylinder 1d Trigger 1e Through-hole 1f Annular space 1g Concave 1h Concave 2 Nozzle 3 Ink 3a Base part 3b Tube 3c Opening hole 3d Convex part 3e Convex part 3f Convex part 4 Screw cap 4a Guide surface 5 Port 6 Seal member 8 Suction pipe 9 Body
10 Intic
11 Screw cap r Space c Undercut v Check valve P Port P ₁ 2nd port

Claims (1)

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,
Providing the intic with a protrusion that protrudes in at least one place around it,
The body is provided with a through hole that fits the protrusion and firmly connects the intic and the body ,
Adapting the protrusion of the intic to the through hole of the body, and adapting the protrusion provided on the inner and outer surfaces of the base portion of the intic to the recess of the wall surface forming the annular space of the body,
2. A trigger type liquid ejector according to claim 1, wherein a guide surface having a large area is provided on the cap so as to surround the connecting area between the Intic and the body over a wide range in a connected state between the Intic and the body .

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