JP2000070785A - Triggered liquid jetting device used in erected or inverted position - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the triggered liq. jetting device of simple structure used both in an erected end in an inverted position. SOLUTION: A suction valve 7 and a delivery valve 8 are provided in a jetting cylinder 4 projected forward from the upper part of a main cylinder 2 erected from a cap-shaped part 1 to be engaged with the mouth neck of a vessel, a first valve cylinder 22 having a through-hole 21 communicating with the inside of the rear of the injection cylinder 4 is engaged with the inside of the main cylinder 2, a liq. suction path forming groove 24 used when inverted is furnished between the outer face of the first valve cylinder 22 and the inner face of the main cylinder 2, a ball air suction preventive valve 25 used when erected is provided between the upper part of the first valve cylinder opening the upper end of the groove 24 and the through-hole 21 thereabove, and a suction pipe 23 is suspended from the lower part of the first valve cylinder.

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 which can be used both upside down.

[0002]

2. Description of the Related Art A main cylinder with a suction pipe is erected from a cap-shaped portion fitted into a mouth and neck of a container body, and a trigger is swingable from a front part of an injection cylinder protruding forward from an upper part of the main cylinder. By operating the trigger, the plunger fitted into the cylinder attached to the rear lower part of the injection cylinder is swung by the operation of the trigger, so that the liquid in the container is sucked into the cylinder via the suction valve. 2. Description of the Related Art A trigger type liquid ejector provided to eject an internal liquid from a nozzle fitted to a front end of an injection cylinder via a discharge valve is widely and generally used.

[0003]

The above-mentioned liquid ejector is intended for upright use, but it is desired to be able to eject liquid even in an inverted state with the expansion of applications. The present invention is provided so that it is easy to change a part of the conventionally used liquid ejector which is used upright and to use it as a liquid ejector which is also used upright.

[0004]

As a first means, a main cylinder with a suction pipe is erected from the inside of a cap-shaped portion to be fitted to the mouth and neck of a container body, and an injection cylinder is projected forward from the upper part of the main cylinder. The plunger fitted into a cylinder provided below the rear part of the injection cylinder is swung by a swing operation of a trigger that is suspended from the front part of the injection cylinder so as to be capable of swinging in the front-rear direction. In a liquid ejector capable of sucking a liquid into a cylinder and ejecting the liquid in the cylinder from a nozzle fitted to the front end of the injection cylinder, a suction valve 7 for sucking the liquid into the cylinder is provided behind the injection cylinder 4. Discharge valves 8 for ejecting the liquid in the cylinder from the nozzle are provided in the front part of the injection cylinder 4 in the end portion, respectively, in the injection cylinder portion between the suction valve and the discharge valve and in the cylinder 3. And the fluid in and out passage 9 Further, a first valve cylinder 22 having a through hole 21 communicating with the rear end of the injection cylinder 4 is fitted into the main cylinder 2, and the suction pipe 23 is hung down from a lower portion of the first valve cylinder. A groove 24 for forming a liquid suction passage for inverted use, which communicates between the upper part of the container body and the upper part of the first valve cylinder between the outer surface of the first valve cylinder and the inner surface of the main cylinder 2; The opening 24a of the groove 24 provided in the upper part of one valve cylinder and the through hole 21 below the opening.
A ball valve type air intake prevention valve 25 for erection is provided in the first valve barrel portion between the two.

[0005] As a second means, the first means is provided, and the first means between the through hole 21 and the upper end of the suction pipe 23 is provided.
A ball valve type air suction prevention valve 29 for inverted time is provided in the valve cylinder portion.

As a third means, a main cylinder with a suction pipe is erected from the inside of the cap-shaped part fitted to the mouth and neck of the container body, and the injection cylinder is projected forward from the upper part of the main cylinder, and the front of the injection cylinder is formed. The plunger fitted into the cylinder attached to the lower part of the back of the above-mentioned injection cylinder is swung by the swinging operation of the trigger that is suspended so that it can swing back and forth from the side, and the liquid in the container is sucked into the cylinder. In a liquid ejector capable of ejecting the liquid in the cylinder from a nozzle fitted to the front end of the injection cylinder, a suction valve 7 for sucking the liquid into the cylinder is provided in the rear end of the injection cylinder 4 and in the cylinder. Discharge valves 8 for ejecting the internal liquid from the nozzles are provided in the front part of the injection cylinder 4, respectively, and the inside of the injection cylinder between the suction valve and the discharge valve and the inside of the cylinder 3 are connected to the liquid inlet / outlet 9. And in the main cylinder 2 A first valve cylinder 22 having a through hole 21 communicating with the inside of the rear end portion of the injection cylinder 4 is fitted, and the upper portion of the first valve cylinder and the inside of the container are provided between the outer surface of the first valve cylinder and the inner surface of the main cylinder 2. A groove 24 for forming a liquid suction passage for inversion is formed to communicate with the inside, and between the opening 24a of the groove 24 provided in the upper part of the first valve cylinder and the through hole 21 below the opening. Into the first valve barrel part of
Equipped with a ball valve type air intake prevention valve 25 for erecting
A second valve barrel 35 having a ball valve type air suction preventing valve 29 for inverted use is fitted into the first valve barrel portion 21 below, and a suction pipe 23 is suspended from the lower part of the second valve barrel. .

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a conventionally known structural part will be briefly described. Reference numeral 1 denotes a cap-shaped part which is fitted to the outer surface of the mouth and neck of a container, and a main cylinder 2 stands upright from the cap-shaped part. The cylinder 3 projects forward from the front of the main cylinder, and the injection cylinder 4 projects forward from the upper part of the main cylinder. A trigger 5 is suspended from the front part of the injection cylinder so as to be able to swing in the front-rear direction. A front part of a plunger 6 which is fitted into the cylinder and protrudes forward is connected to the upper part of the trigger.

In a generally known example, a communication passage with the cylinder 3 is provided at an intermediate portion of the main cylinder 2, a suction valve is provided at a portion inside the main cylinder below the communication passage, and at a main cylinder portion above the communication passage. A discharge valve is provided, and a through-hole communicating with the injection cylinder is formed in the main cylinder portion above the discharge valve, and the plunger swings by operation of the trigger, and is then drooped from the main cylinder into the cylinder through the suction valve. The liquid in the container is sucked through the suction pipe, and the liquid in the cylinder is made narrower in the cylinder, passes through the discharge valve, and can be ejected from the nozzle 19 fitted to the front end of the injection cylinder.

In the present invention, a suction valve 7 is provided in the rear part of the injection cylinder 4 and a discharge valve 8 is provided in the front part of the injection cylinder, and the discharge valve 8 is provided between the suction valve and the discharge valve. And the inside of the cylinder 3 were communicated with each other through a liquid passage 9.

The two valves and the liquid inlet / outlet can be formed, for example, as follows. A rod-shaped valve member 11 is fitted into the injection cylinder 4 as shown in the illustrated example.
And the rear bar portion 13 are connected by a compression spring piece 14 to form a front bar portion.
12 The tips of a plurality of engaging elements 15 attached to the outer surface of the rear part are pressed against the inner wall surface of the injection cylinder to fix the rear rod part to the inner surface of the injection cylinder 4, and the suction valve element 16 attached to the rear end of the rear rod part is injected. The suction valve 7 is brought into pressure contact with a valve hole 17 formed in the rear wall of the cylinder, and the outer periphery of an elastic valve element 18 which protrudes from a middle portion of the front rod portion 12 to the front and outward is formed in front of the front rod portion 12. The discharge valve 8 is formed by being pressed against the inner surface of the thin-walled cylinder 19b projecting rearward from the rear end of the inner cylinder 19a of the nozzle 19 fitted to the nozzle 19, and a liquid inlet / outlet 9 communicating with the cylinder 3 is provided at the rear of the injection cylinder 4. .

In the present invention, as shown in FIG. 1, a first valve cylinder 22 having a through hole 21 communicating with the inside of the injection cylinder 4 is fitted into the main cylinder 2 and the through hole 21 is provided. A suction pipe 23 is hung down from inside the lower first valve cylinder portion, and an upper portion of the container body and an upper end portion of the first valve cylinder communicate between the outer surface of the first valve cylinder and the inner surface of the main cylinder 2. An opening 24a of the groove 24 provided at the upper end of the first valve cylinder is formed by forming a groove 24 for forming a time liquid suction passage.
A ball valve type erecting air suction preventing valve 25 of a ball valve type is provided in the first valve cylinder portion between the opening and the through hole 21 below the opening. The groove 24 is vertically provided on the outer surface of the first valve cylinder 22 from the lower end to the upper end, and the upper end of the groove is cut out to form an opening 24a. An upper large diameter tapered first valve seat is provided, and a first ball valve 26 is mounted on the first valve seat to form the erecting air suction prevention valve 25. The above-described through-hole 21 is formed in the front wall portion of the small inner diameter portion to form the injection cylinder 4.
In FIG. 1, the lower inner surface of the small-diameter portion is formed in a tapered shape with an upper small diameter in communication with a valve hole 17 formed in the rear wall.
A valve seat 27, and a second ball valve 28 mounted on a plurality of projections attached to an inner surface below the valve seat 27, form an air suction prevention valve 29 for inversion.

In the above configuration, when the trigger 5 is pulled from the state shown in FIG. 1, the plunger 6 retreats, and the pressure inside the cylinder is increased, so that the liquid that has entered the injection cylinder 4 from the liquid inlet / outlet passage 9 is discharged from the discharge valve. 8 is opened, and is ejected from the nozzle 19 fitted to the front end of the injection cylinder.

Next, when the trigger 5 is released, the spring plate 10 for urging the trigger forward swings the trigger forward, and slides the plunger 6 forward, thereby creating a negative pressure in the cylinder. The valve 7 opens to suck the liquid in the container through the liquid inlet / outlet 9. At this time, since the erecting air suction preventing valve 25 is closed, the groove 24 and the through hole 21 are not provided.
The air above the liquid level in the container does not enter the cylinder 3 through the passage.

When used upside down, the lower end of the suction pipe 23 is exposed above the liquid surface,
The ball valve 26 opens to leave the first valve seat by its own weight. On the contrary, the second ball valve 28 of the inverted air suction valve 29 is seated on the second valve seat 27 provided above the valve and closes the valve.

When the trigger 5 is pulled from this state, the liquid in the cylinder opens by ejecting the discharge valve 8 and squirts from the nozzle 19 in the same manner as in the case of erecting by pressurization due to the retreat of the plunger 6, but when the trigger is released and the plunger 6 moves forward. , Suction valve 7
Is opened to suck the liquid in the main cylinder 2, so that the liquid above the inside of the container is sucked into the cylinder 3 through the groove 24 forming the inverted liquid suction passage. It should be noted that even if the above-described inverted air suction valve 25 is not provided, there is no hindrance to the liquid ejection when the inverted is used, but if the valve 25 is not provided, the liquid level in the container and the liquid level in the suction pipe Is almost the same when you are upside down,
As the liquid in the container decreases, air enters into the suction pipe.Therefore, when the container is returned to an upright position after the inverted use, the air contained in the suction pipe is removed by the cylinder together with the suction liquid. When entering the inside and ejecting liquid,
The air is also ejected together.

In the embodiment shown in FIG. 2, the connecting tube 31 is erected from the inside of the cap-like portion 1 fitted to the mouth and neck of the container body, the rear portion of the connecting tube top plate 31a is opened, and the first end of the connecting tube is opened from the opening periphery. Valve cylinder
The upright portion 22 has an opening in the cylindrical wall portion at the lower end of the groove 24, and a communication groove 32 communicating with the opening extends vertically to the lower end of the inner wall surface of the first valve cylinder. In this embodiment, the valve hole in the rear wall of the injection cylinder is also used as the through hole 21 formed in the first valve cylinder, and the suction valve body 16 is brought into pressure contact with the through hole to form the suction valve 7. Other structures are almost the same as those of the first embodiment.

FIG. 3 shows an embodiment in which an inverted air suction preventing valve 29 is provided on the inner surface of a second valve cylinder 35 fitted into the lower part of the first valve cylinder 22 and the second valve cylinder The suction pipe 23 is hung from the lower part. In this embodiment, the connecting cylinder
The top plate 31a of the base 31 is provided so as to be inclined upright from the inner surface of the lower end of the connecting cylinder to the lower end of the first valve cylinder 22. In this way, when used in an inverted state, the liquid in the container can be used without leaving liquid in the container. It is provided so that it can be sucked into the cylinder through the groove 24 for forming the liquid suction passage. The lower end of the groove 24 is opened to the inner surface of the upper end of the inclined portion.

The embodiment shown in FIGS.
From the upper front surface of the main cylinder is inclined downward and forward. Further, the through hole 21 of the first valve cylinder 22 and the valve hole 17 of the rear wall of the injection cylinder are
The first valve cylinder is communicated with a passage groove 36 formed in the outer surface of the first cylinder.

FIG. 5 shows an air suction prevention valve 29 for an inverted state.
The second ball valve 28 is supported by a support piece 37 formed by cutting out a part of the lower peripheral wall of the first valve cylinder and projecting upward and inward from the lower edge of the cutout. The cylindrical wall portion at the tip of the support piece is also notched,
The liquid rising through the suction pipe 23 is provided so as to be able to rise through one side of the supporting piece.

[0020]

According to the present invention, the suction valve and the discharge valve which are provided in the main cylinder rising from the inside of the cap-shaped part to be fitted to the mouth and neck of the container body are replaced with the main cylinder. A first valve cylinder 22 having a through-hole 21 communicating with the rear end of the injection cylinder is fitted in the main cylinder of the injection cylinder protruding forward from the upper part, and a suction pipe is inserted from the lower part of the first valve cylinder. 23, and a groove 24 for forming an inverted liquid suction passage is formed between the outer surface of the first valve cylinder and the inner surface of the main cylinder to communicate between the upper part of the container body and the upper part of the first valve cylinder. Also, a ball valve type erecting air suction prevention valve for erecting is provided in the first valve barrel portion between the opening 24a of the groove 24 provided in the upper portion of the first valve barrel and the through hole 21 below the opening.
Since the first valve cylinder 25 is provided, the first valve cylinder 22 having the above-described configuration can be formed into a trigger type liquid ejector which can also be used as an inverted head simply by fitting the first valve cylinder 22 into the main cylinder 2. The first valve cylinder 22 is fitted into the main cylinder 2 standing up from the inside.
However, this does not hinder the attachment and detachment of the cap-shaped portion 1 of the liquid ejector from the mouth and neck of the container body.

As in the case of the second aspect, a ball valve type inverted air suction prevention valve 29 is provided in the first valve cylinder portion between the through hole 21 and the upper end of the suction pipe 23. In addition, air does not enter into the suction pipe during inverted use, and therefore, when returning to the upright state and ejecting liquid after the inverted use, the air does not eject together with the ejected liquid.

As in the case of the third aspect, a second valve cylinder 35 having a ball valve type air intake valve 29 for inversion is fitted in a lower portion of the first valve cylinder 22 and the lower portion of the second valve cylinder is provided. By hanging the suction pipe 23 from above, the structure can be simplified as compared with the case where a ball valve type air suction valve 29 for inversion is provided in the lower part of the first valve cylinder 22.

[Brief description of the drawings]

FIG. 1 is a sectional view of a liquid ejector according to the present invention.

FIG. 2 is a sectional view of a liquid ejector shown in a second embodiment.

FIG. 3 is a sectional view of a liquid ejector shown in a third embodiment.

FIG. 4 is a sectional view of a liquid ejector shown in a fourth embodiment.

FIG. 5 is a cross-sectional view of a liquid ejector shown in a fifth embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Cap-shaped part 2 ... Main cylinder 7 ... Suction valve 8 ... Discharge valve 11 ... Bar-shaped valve member 22 ... 1st valve cylinder 24 ... Groove

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Hiroshi Mizushima 3-6 Oshima Yoshino Kogyo Co., Ltd., Koto-ku, Tokyo (72) Inventor Kazuhito Kuwahara 3-2-6 Oshima Yoshiko, Koto-ku, Tokyo Nokono Factory

Claims (3)

[Claims] 1. A main cylinder with a suction pipe is erected from the inside of a cap-shaped part fitted into the mouth and neck of a container body, and an injection cylinder is projected forward from an upper part of the main cylinder. With the swing operation of the trigger that has been suspended so that it can swing to
The plunger fitted into the cylinder provided below the rear part of the injection cylinder is swung to suck the liquid in the container into the cylinder, and the liquid in the cylinder can be ejected from the nozzle fitted to the front end of the injection cylinder. In the liquid ejector, a suction valve 7 for sucking the liquid into the cylinder is provided in the rear end of the injection cylinder 4 and a discharge valve 8 for ejecting the liquid in the cylinder from the nozzle is provided in the front of the injection cylinder 4. Are provided so that the inside of the injection cylinder between the suction valve and the discharge valve and the inside of the cylinder 3 communicate with each other through the liquid inlet / outlet passage 9, and the inside of the main cylinder 2 communicates with the inside of the rear end of the injection cylinder 4. Let through hole
A first valve cylinder 22 having a first valve cylinder 21 is fitted thereto, the suction pipe 23 is hung down from a lower portion of the first valve cylinder, and an upper portion of the container body is provided between the outer surface of the first valve cylinder and the inner surface of the main cylinder 2. And a liquid suction passage forming groove 24 for inverting, which communicates with the inside of the upper part of the first valve cylinder.
Between the opening 24a and the through hole 21 below the opening.
A trigger-type liquid ejector for both an upside-down and an upright, wherein a ball valve-type erecting air suction prevention valve 25 is provided in a valve cylinder portion. 2. An inverted air suction prevention valve 29 of a ball valve type for use in an inverted state is provided in a first valve cylinder portion between the through hole 21 and the upper end of a suction pipe 23. Trigger type liquid ejector for double use as described. 3. A main cylinder with a suction pipe is erected from the inside of a cap-shaped part fitted to the mouth and neck of a container body, and an injection cylinder is projected forward from an upper part of the main cylinder. With the swing operation of the trigger that has been suspended so that it can swing to
The plunger fitted into the cylinder provided below the rear part of the injection cylinder is swung to suck the liquid in the container into the cylinder, and the liquid in the cylinder can be ejected from the nozzle fitted to the front end of the injection cylinder. In the liquid ejector, a suction valve 7 for sucking the liquid into the cylinder is provided in the rear end of the injection cylinder 4 and a discharge valve 8 for ejecting the liquid in the cylinder from the nozzle is provided in the front of the injection cylinder 4. Are provided so that the inside of the injection cylinder between the suction valve and the discharge valve and the inside of the cylinder 3 communicate with each other through the liquid inlet / outlet passage 9, and the inside of the main cylinder 2 communicates with the inside of the rear end of the injection cylinder 4. Let through hole
A liquid suction passage for inverted use, in which a first valve cylinder 22 having a first valve cylinder 21 is fitted, and between the outer surface of the first valve cylinder and the inner surface of the main cylinder 2 communicates the inside of the container and the upper part of the first valve cylinder. A formation groove 24 is formed, and a ball valve type is inserted into the first valve cylinder portion between the opening 24a of the groove 24 provided in the upper part of the first valve cylinder and the through hole 21 below the opening. And a second valve cylinder 35 having a ball valve type inverted air intake prevention valve 29 is fitted into the first valve cylinder portion below the through hole 21. A trigger-type liquid ejector which is also used as an inverted head, wherein a suction pipe 23 is provided vertically from the lower part of the second valve cylinder.