JPH1119551A - Trigger type liquid ejector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the deformation of a sucking-up pipe to facilitate filling work by demarcating a liquid injection passage of which the upper end is opened to the upper end part of a pump main body and the lower end is opened to the top plate part of a mounting cap around a vertical cylinder and providing the liquid member fitted to the upper end opening of the liquid injection passage so as to liquidtightly close the same. SOLUTION: A mounting cap 3 is fitted to the mouth neck part 2 of a container B and a pump main body 7 is mounted on and fixed to the cap 3 and a cylinder 5 is provided to the intermediate part of the vertical cylinder 4 erected from the upper end of the mounting cap 3 so as to protrude forwardly and an ejection cylinder 6 is provided to the upper part thereof in a forwardly protruding state. A liquid injection passage (a) of which the upper end is opened to the upper end part of the pump main body 7 and the lower end is opened to the top plate part of the mounting cap 3 is demarcated around the vertical cylinder 4 and the upper end opening of the liquid injection passage (a) is liquidtightly closed by the lid member 14 to be fitted. By this constitution, there is no possibility of the deformation of a sucking-up pipe and filling work can be easily performed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a trigger type liquid ejection pump.

[0002]

2. Description of the Related Art As a triker type liquid ejection pump, a mounting cap fitted to the mouth and neck of a container body, and a cylinder fitted and fixed above the cap, and a cylinder from an intermediate portion of a vertical cylinder rising from the upper end of the mounting cap, A pump body having an injection cylinder projecting forward from the upper part thereof, a nozzle head fitted to the tip of the injection cylinder, and a vertically swingable vertically extending from the front of the injection cylinder, And a trigger in which the tip of a plunger fitted in a forward biased state is pushed in association with the plunger. By operating the trigger, the liquid in the container body is sucked up by the action of a built-in pump mechanism, and is discharged from the nozzle port of the nozzle head. Known are those that are configured to erupt.

[0003]

The above-mentioned conventional ejection pump is transferred from a container maker to a liquid filling company with the pump removed from the container, where the liquid is filled into the container. After that, it is common to install a pump to commercialize the product. Therefore, during the transfer, the suction pipe attached to the pump is bulky and may be deformed by an external force because the pipe is exposed. Furthermore, at the time of filling, after injecting the liquid into the container body, screw the mounting cap and mount the pump,
The work of filling the liquid, including the large pump body, was complicated. In view of the above, the present invention provides an excellent trigger which is less bulky when transferred to a liquid filling company, has no risk of deformation of a suction pipe, and can be easily filled, as compared with a conventional ejection pump. It proposes a liquid jet pump.

[0004]

In order to solve the above-mentioned problems, a pump according to the present invention has a mounting cap 3 fitted to a neck of a container body, a fitting cap fixed above the cap, and an upper end of the mounting cap. A cylinder 5 is provided from an intermediate portion of the vertical cylinder 4 standing upright, and a pump body 7 is provided by projecting an injection cylinder 6 forward from the upper part thereof. A tip 10 of the plunger 9 fitted in the cylinder in a forward biased state is provided with a trigger 10 having an upper portion associated with the tip, and by operating the trigger,
In the trigger type liquid ejection pump configured to suck up the liquid in the container body and eject from the ejection port at the tip of the injection cylinder by the action of the built-in pump mechanism, the upper end is opened at the upper end of the pump body 7 and attached. A liquid injection passage a having a lower end opened at the top plate portion of the cap 3 is defined around the vertical cylinder 4, and a lid 14 is provided in which the upper end opening of the liquid injection passage a is liquid-tightly closed and fitted. Trigger type liquid jet pump.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. As shown in the drawings, a trigger type liquid ejection pump A of the present invention comprises a mounting cap 3 fitted to the mouth and neck 2 of a container body B, a vertical cylinder fitted and fixed above the cap, and rising from the upper end of the mounting cap. A pump body 7 having a cylinder 5 protruding forward from an intermediate portion of the cylinder 4 and an injection cylinder 6 protruding forward from the upper part of the cylinder 4, a nozzle head 8 fitted to the tip of the injection cylinder, and swinging from the front of the injection cylinder A trigger 10 having a plunger 9 fitted in the cylinder in a forward-biased state and having an upper portion associated with the tip of the plunger 9 is provided. The structure is such that the liquid is sucked up and spouted from the spout of the nozzle head 8.

As the pump mechanism, for example, a pipe 11 connected to the lower part of the vertical cylinder 4 is hung down into the container body, and the vertical cylinder 4 communicates with the inside of the cylinder 5 and the vertical cylinder 4 communicates with the injection cylinder 6. To form a liquid flow path from the pipe 11 to the injection cylinder 6, and a suction valve is provided upstream of the cylinder in the liquid flow path.
A discharge valve 13 is provided downstream of the discharge valve 13, and the liquid in the cylinder 5, which is pressurized by pushing the plunger 9, opens the discharge valve 13, passes through the injection cylinder 6, and is ejected from the ejection port of the nozzle head 8. Further, when the plunger 9 moves forward, the discharge valve 13 is closed and the suction valve 12 is opened due to the negative pressure in the cylinder 5, and the liquid in the container is introduced into the cylinder 5 through the pipe 11. The configured known mechanism is adopted.

The present invention relates to a jet pump of this type,
A liquid injection passage a having an upper end opened at the upper end of the pump body 7 and a lower end opened at the top plate portion of the mounting cap 3 is defined around the vertical cylinder 4, and in the presence of the liquid injection passage a, It is configured such that the liquid can be charged while the pump A is mounted on the container B. Since the liquid injection path a is defined around the vertical cylinder 4, there is no need to make the pump main body particularly large in comparison with the size of a conventional ejection pump of this type.
Moreover, it is configured such that the liquid can be injected into the container within a relatively short distance without turning around. The liquid injection path a may be defined in any shape as long as it is around the vertical cylinder. However, since the cylinder 5 and the injection cylinder 6 are protruded in front of the vertical cylinder, at least that part is removed. Will be defined in parts. In the present invention, the lid 14 is provided. The lid 14 is adapted to close the upper end opening of the liquid injection path a in a liquid-tight manner after the liquid is injected, and may be fitted in various forms. May be configured.

Hereinafter, embodiments of the drawings will be described in more detail. The mounting cap 3 in the present embodiment has an inward flange-like top plate 16 extending from the upper edge of the peripheral wall 15 fitted to the outer periphery of the container body neck and neck portion 2, and a fitting cylinder is provided on the inner peripheral edge of the upper surface of the top plate 16.
The connecting cylinder 19 is provided standing at the center of the fitting cylinder 17 by a plurality of support plates 18 extending from the inner surface of the fitting cylinder 17 toward the center.
Is provided.

The pump body 7 has a vertically extending top wall 20a extending from the top of the injection cylinder 6 and having a rectangular shape in plan view. Cover 20 is integrally provided. In addition, wearing cap 3
The lower part of the vertical cylinder 4 is closely fitted to the outer periphery of the upper part of the connecting cylinder 19, and the cylindrical fitting part 21a at the lower end of the partition 21 forming the liquid injection path a is formed by The pump body 7 is fitted and fixed above the mounting cap 3 by being fitted to the outer periphery.

The lower part of the vertical cylinder 4 has a cylindrical shape, and the upper part has a crescent shape in which the rear half of the upper part is turned forward in an arc shape. The partition 21 is provided at the lower part of the cylinder 5 at the fitting portion 21.
a is a cylindrical shape as described above, and the upper part is a deformed cylindrical shape that stands behind the vertical cylinder 4 by sharing the rear half wall of the vertical cylinder 4 and is provided at the rear of the top plate 20a of the cover 20. The upper end is open inside the part. In the present embodiment, the lid 14 has a peripheral wall 14b suspended downward from the peripheral edge of the top plate 14a.
A sealing cylinder 14c is provided vertically from the back surface of the inner top plate. After the liquid is injected, the sealing cylinder 14c is fitted on the inner peripheral upper end of the partition 21 and the peripheral wall 14b is fitted on the outer peripheral upper end of the partition 21.

The pump A thus constructed is mounted on the container B with the cover 14 removed, and is transferred to a liquid filling company in this state. And, as shown in FIG.
After the liquid is injected from the upper end opening of the liquid injection path a through the filling nozzle 22 or the like, the liquid can be filled by fitting the lid 14. Incidentally, each member of the jet pump can be formed mainly using a synthetic resin,
If necessary, an elastomer, a metal, or the like can be used in combination.

[0012]

As described above, the trigger type liquid jet pump according to the present invention has the above-described structure, and in particular, has an upper end opened at the upper end of the pump body 7 and a lower end opened at the top plate of the mounting cap 3. A liquid injection path a is defined around the vertical cylinder 4 and a lid 14 is provided for fitting the liquid injection path a at the upper end opening in a liquid-tight manner, so that the transfer from the pump manufacturer to the liquid filler is performed. At this time, since it can be done with only the lid 14 removed,
Since the pipe is not bulky and the pipe is not exposed, there is no danger of deformation, and the effect that the filling operation can be performed extremely easily can be exhibited.

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view showing an embodiment of the present invention.

[Explanation of symbols]

3 mounting cap, 4 vertical cylinder, 5 cylinder, 6 injection cylinder, 7 pump body, 9 plunger, 10 trigger,
14 ... Lid, a ... Liquid injection path

Claims (1)

[Claims] 1. A mounting cap 3 fitted to the mouth and neck of a container body.
And a cylinder 5 from an intermediate portion of the vertical cylinder 4 standing upright from the upper end of the mounting cap.
The pump body 7 is provided with an injection cylinder 6 projecting forward from the upper part thereof, and is vertically swingably suspended from the front part of the injection cylinder, and fitted into the cylinder in a forward biased state. The plunger 9 is provided with a trigger 10 having an upper part associated with the tip of the plunger 9. When the trigger is operated, a liquid in the container is sucked up by the operation of the built-in pump mechanism and is ejected from the ejection port at the tip of the injection cylinder. In the above-described trigger type liquid jet pump, a liquid injection path a having an upper end opened at the upper end of the pump body 7 and a lower end opened at the top plate of the mounting cap 3 is defined around the vertical cylinder 4, and the liquid is injected. A trigger type liquid ejection pump, comprising a lid 14 for fitting the upper end opening of the passage a in a liquid-tight manner.