JP2002192030A - Trigger type liquid sprayer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To connect an intake firmly to a body in members constituting a sprayer in the trigger type liquid sprayer. SOLUTION: The trigger type liquid sprayer is constituted of the body having a nozzle mounted at the tip part, the intake combined with the body and provided with a check valve for preventing the back flow inside and a screw cap for fixing the intake to a mouth part of the vessel main body to hold with the body, a projecting part projected at least at a position of the periphery is provided in the intake and a through-hole for connecting the intake firmly to the body by engaging with the projected part is provided in the body.

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 it is an object of the present invention to reliably prevent the body constituting the ejector from being detached from the intik in connection with the intic.

[0002]

2. Description of the Related Art A trigger-type liquid ejector is frequently used for a container filled with a fungicide, a detergent, and the like.
, 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.

[0003] The intic 22 is sandwiched between a mouth of the container body and a cap 24 screwed to the mouth 23 via a sealing member 28, while the body 21 and the intique 22 are formed on the side wall of the intic 22. The projection is fitted to the depression of the body portion 21 and is retained by a so-called undercut c.

According to such an ejector, the body portion 2
By repeatedly towing the trigger 25 attached to the piston 1, the piston 26 connected to the trigger 25 is operated, and the suction and pressurization of the liquid are alternately and efficiently performed in the piston cylinder 27. 22 and the body portion 21 can be continuously ejected from the nozzle 20, but when an excessive force that is contrary to the connection portion between the body portion 21 and the intik 22 is applied,
There is a concern that the engagement due to the undercut may be released and the body portion 21 may fall out of the intique 22, and a stronger connection between the two members is desired to further enhance safety.

[0005] In this regard, although a design to deepen the concave portion has been attempted in order to enhance the engagement by the undercut, since such a member is usually formed by injection, the concave portion is formed. If it is made deeper, there is a problem that the molded member cannot be removed from the mold.

[0006]

SUMMARY OF THE INVENTION The object of the present invention is not only to solve the problem of molding the constituent members, but also to more firmly connect the intake and the body without increasing the number of parts or complicating the structure. The present invention is to propose a new trigger type liquid ejector capable of performing the above-mentioned operations.

[0007]

According to the present invention, there is provided an ink jet head having a body provided with a nozzle at a distal end thereof, and an opening having an opening for introducing air into a container body and having a check valve therein for preventing a liquid from flowing backward. And a screw cap that keeps the intik fixed to the mouth of the container body while connected to the body.The piston is reciprocated by pulling and releasing the trigger, and the liquid in the container body is moved into the piston cylinder. A trigger-type liquid ejector that continuously ejects liquid from the tip of a nozzle through an intik and a body by suction and pressurization, wherein the intik is provided with a protrusion projecting at at least one location around the intik, A trigger-type liquid ejector characterized in that a through-hole is provided in the body so that the convex portion is fitted to connect the intique and the body firmly.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS At the same time as molding of a body or after molding of a body, a hole is formed in at least one place around the body to form a through hole. The intik is provided with a convex portion which fits into the through hole of the body, and the convex portion is fitted into the through hole of the body to firmly connect the two.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 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, number 1 is a body. Reference numeral 2 denotes a nozzle mounted on the distal end portion of the body 1, and reference numeral 3 denotes an intik. The intick 3 comprises a base portion 3a and a tube 3b integrally formed with the base portion 3a and inserted into the body 1, and a base portion 3a
An opening 3c for introducing the atmosphere is provided at the protruding end portion of the at least one protruding portion 3 around the base portion 3a.
d is provided.

Reference numeral 4 denotes a screw cap which is fixed and held in the mouth 5 of the container body, 6 denotes a sealing member disposed between the intic 3 and the mouth 5, and 8 denotes a liquid which is connected to the intic 3 and is contained in the container body. It is a suction pipe for sucking.

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.
, A trigger 1d for controlling the pressing of the piston 1b, and a through hole 1e formed by drilling.

The base portion 3a of the intik 3 is adapted to fit into the annular space 1f of the body 1 as shown in FIG. 2, and its state is enlarged as shown in FIG. A projection 3d provided on the base portion 3a fits into the through hole 1e of the body 1 and also has a base portion 3a.
The protrusions 3e, 3f provided on the inner and outer surfaces of the body 1 engage with recesses 1g, 1h of the wall surface forming the annular space 1f of the body 1 by so-called undercuts, so that the intic 3 and the body 1 are further strengthened. It is connected to.

[0013] The intik 3 is held in a tight connection with the body 1 while the cap 4 holds the mouth 5 of the container body.
The cap 4 is provided with a guide surface 4a having a large area surrounding the connection region of the body 1 and the intique 3 over a wide area.
Blurring and tilting are prevented.

FIG. 4 is a perspective view showing the appearance of the intik 3;
FIG. 5 shows the body 1 in a partially broken state.

In the trigger type liquid ejector according to the present invention, not only the engagement by the undercut but also the structure in which the protrusion 3d of the intik 3 is adapted to the through hole 1e of the body 1, the size of the body 1 is excessive. Even if a force is applied, the projection 3d remains in the through hole 1e, and the body 1 does not easily fall off from the intique 3.

Injecting the liquid in the container body with the trigger type liquid ejector having the structure shown in FIG. 1 follows the following procedure.

First, when the trigger 1d is pulled according to the arrow, the piston 1b is pressed and abuts against the end of the piston cylinder 1c.

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
Is negative pressure, 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 in 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.

The protrusion 3d of the intik 3 is a base portion 3a.
Is shown as an example provided around, but the number and the installation position can be changed as appropriate, and the drilling method is not particularly limited in the present invention. If the structure of the constituent members permits, the protrusion 3d provided on the intic 3 may be provided on the body 1, and the through hole 1e provided on the body 1 may be provided on the intic 3.

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.

[0022]

According to the present invention, the projection provided on the base portion is adapted to the through hole of the body in addition to the engagement by the undercut, so that the intik and the body can be firmly connected. Further, the structure is not complicated and the number of parts is not increased.

[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 an external perspective view of an intik.

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]

1 Body 1a Passage 1b Piston 1c Piston Cylinder 1d Trigger 1e Through Hole 1f Annular Space 1g Concave 1h Concave 2 Nozzle 3 Intik 3a Base 3b Tube 3c Open 3d Convex 3e Convex 3f Convex 4 Guide Screw Cap 4 mouth 6 sealing member 8 the suction pipe 9 body 10 Intiku 11 screwed cap r space c undercut v check valve P port P ₁ second port

Continued on front page F term (reference) 3E014 PA01 PC03 PD12 PD13 PF10 3E084 AA12 AB01 BA02 CA01 CB02 CC03 DA01 DB12 DC03 FA09 FB01 GA01 GB01 HA03 HB04 HC01 HD01 KB01 LB02 LD22 LD26

Claims (1)

[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 body while the trigger is being pulled and released, causing the piston to reciprocate, sucking the liquid in the container 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 the intik is provided with a protruding portion projecting at at least one location around the intic, and the projecting portion is provided on the body. A trigger type liquid ejector characterized by having a through hole adapted to firmly connect an intique and a body.