JPH1119549A - Trigger type liquid ejector used both in erected and inverted states - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a liquid suction path at the time of inverting a trigger type liquid ejector used both in the erected and inverted states without using a suction pipe. SOLUTION: A liquid suction path used at the time of inversion is formed of a first passage passing through a passage formed between the outer face of a suction main cylinder 15 and the inner face of a vertical cylinder 26 and opened 62 and 53 respectively on the lower face of a cap-shaped connecting member top plate 13 and a vertical cylindrical wall section encircled by a plunger guide cylinder 27, and a second passage formed of the front end open channel 64 formed along the cylinder direction on the outer face except the rear section of the plunger guide cylinder 27, and a ball valve type check valve for blocking the inner face of a suction main cylinder at the time of inversion is provided on the inner face of the suction main cylinder 15 positioned below a liquid outlet and inlet 22 is provided on either of the upper section or the lower section of the suction valve 21.

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 As shown in, for example, Japanese Utility Model Publication No. 56-20052, a vertical pump-type liquid ejector for both forward and inverted use is known, but in the prior art, a main pipe of a trifurcated connecting pipe is fitted to the lower end of a cylinder. Fit the upper end of the suction pipe for erecting to the auxiliary pipe that branches downward and protrudes, and fit the lower end of the suction pipe for inversion to the auxiliary pipe that branches upward and protruding. A check valve for projecting the two pipes downward and upward, and closing the pipe line when inverted is provided in the auxiliary pipe projecting downward, and a check valve for closing the pipe line when erecting is provided in the auxiliary pipe projecting upward. A stop valve was provided for each. Therefore, the two suction pipes for upright and inverted use, the former hangs downward from the lower end of the cylinder while the latter rises upward, and these are integrally connected to the cylinder. As a result, it is inconvenient to insert and remove the cylinder into and out of the container, and if the container is transparent, the suction pipes can be seen and the appearance is impaired.

[0003]

SUMMARY OF THE INVENTION According to the present invention, a trigger-type liquid ejection container is used for both upside down use and a liquid suction path for an upside down cylinder is provided without using a liquid suction pipe for inversion. It is provided so that the above-mentioned drawback can be removed by forming.

[0004]

As a first means, a container body 1 standing up from the mouth and neck 2, a mounting cylinder 5 fitted to the outer surface of the mouth and neck, and a container body A cap-shaped connecting member 11 that penetrates the suction main cylinder 15 in the top plate 13 and is held in the closed position, and a vertical cylinder fitted to the outer surface of the main suction cylinder.
From the middle part of 26, the plunger guide cylinder 27 and the cylinder 28 surrounding the cylinder coaxially, the upper end of the vertical cylinder projects the injection cylinder, and the bottom wall part of the cylinder rear from the lower part of the vertical cylinder. An ejector main body 25 in which a fitting tube 30 of an upper surface closing surrounding a lower end portion of a vertical tube is hung down and used as a part of an upper surface closing wall, and the fitting tube is fitted to an upper outer surface of the cap-shaped connecting member 11. And a trigger suspended from the front of the injection cylinder
Plunger with rear part fitted into cylinder by operation 41
45 is retracted and advanced, and a trigger type is provided in which the liquid in the container can be injected into the cylinder via the suction pipe 23 hanging down from the lower end of the suction main cylinder 15 and the liquid in the cylinder can be ejected from the nozzle at the front end of the injection cylinder. In the liquid ejector, the erecting liquid inlet / outlet 22 for communicating the inside of the cylinder 28 with the suction main cylinder 15 is provided.
Are formed in the upper portion of the vertical cylinder front wall portion closing the rear surface between the plunger guide cylinder 27 and the cylinder 28 and the upper portion of the suction main cylinder front wall portion in contact with the vertical cylinder front wall portion.
Ball valve type suction valve for erecting into the lower suction main cylinder 15 inner surface
21 and the lower surface of the cap-shaped connecting member top plate 13 through a passage provided between the outer surface of the suction main cylinder 15 and the inner surface of the vertical cylinder 26, and the vertical cylinder wall surrounded by the plunger guide cylinder 27, respectively. First passage having openings 62 and 63 and plunger guide cylinder
A pressurizing chamber formed in the container body and a cylinder chamber behind the rear end of the groove 64 by a second passage formed by a front end open groove 64 formed in the outer surface except the rear part of the 27 along the cylinder direction. 65 to form a liquid suction passage for inversion into the pressurized chamber, and below the liquid inlet / outlet hole 22 and at the upper or lower side of the suction valve 21 at the suction valve 21 inner surface. Further, a ball valve type check valve 66 is provided which closes a liquid passage portion between the liquid inlet / outlet 22 and the upper end of the suction pipe 23 when inverted, and opens when erect.

As a second means, the above-mentioned first means is provided, and the second valve seat 67 of the ball valve type check valve 66 is connected to a suction valve.
The first valve seat 21 is formed on the lower surface of the inward flange 19 having the upper surface.

As a third means, a plunger 45 having the first or second means and forming the upper wall of the fitting cylinder 30 is provided at the front end of a bottom wall portion at the rear of the cylinder. Only the entrance hole 31 closed at the outer surface of the large diameter portion 46 at the rear end of the plunger, and opened when the plunger retracts, and the exit hole 17 at the front portion of the top plate 13 of the cap-shaped coupling member 11, respectively, are bored, Along with forming an outside air suction passage communicating between the two holes, the hole-shaped portion of the lower surface opening of the outlet hole 17 is fitted,
An outside air suction pipe 72 having a small inner diameter and not having water permeability, which is communicated with the outlet hole 17, was hung down.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS 1 is a container body for erecting a mouth and neck part 2,
Reference numeral 3 denotes a trigger type liquid ejector which is attached to the container body by screwing a mounting cylinder onto the outer surface of the mouth and neck. The liquid ejector is
Except for the later-described portions, they are commonly used well-known components. First, the known portions will be briefly described. The liquid ejector has a mounting cylinder, a cap-shaped connecting member, an ejector main body, a trigger, and a plunger.

The mounting tube 5 has an inward flange 6 at the upper end of the tube portion screwed to the outer surface of the mouth and neck of the container body. The cap-shaped connecting member 11 connects the mounting cylinder and the ejector main body,
In addition, the outer flange 12, which closes the mouth of the container body and is sandwiched between the upper end surface of the mouth and neck portion 2 and the inward flange 6 of the mounting tube, is attached to the outer surface of the intermediate portion of the peripheral wall 14 hanging from the outer periphery of the top plate 13. A suction main cylinder 15 is provided at the rear of the top plate 13, and a deep groove 16 is provided around a top plate surrounding an upper surface portion surrounding the main suction cylinder.
An outlet hole 17 for the outside air suction passage is formed in the front part of the top plate 13. In addition, an inward flange 19 having an upper surface as a first valve seat 18 is provided on the inner surface of the intermediate portion of the suction main barrel 15, and a first sphere 20 is disposed on the valve seat to provide a suction valve 21. A first through hole for forming a liquid inlet / outlet 22 for communicating the suction main cylinder with the inside of the cylinder is formed in a front portion of the cylindrical portion above the suction valve, together with a second through hole described later. A suction pipe 23 is suspended from the lower end of the suction main cylinder 15 to the bottom of the container.

The ejector main body 25 has a vertical cylinder 26 whose lower end is fitted into the deep groove 16 and which is fitted to the outer surface of the suction main cylinder 15. And a cylinder 28 coaxially surrounding the cylinder, and an injection cylinder (not shown) protruding forward from the upper end of the vertical cylinder. From the center of the top wall that closes the upper end surface of the vertical cylinder, the blind movement preventing rod 29 of the first sphere 20 is suspended by being loosely inserted into the suction main cylinder 15. Furthermore, from the lower part of the vertical cylinder 26, the bottom wall portion of the rear part of the cylinder 28 is shared as a part of the upper surface closing wall, and the fitting cylinder 30 of the upper surface closing is hung down. It is fitted to the upper outer surface of the peripheral wall 14. At the front of the cylinder rear bottom wall forming the upper surface closing wall of the fitting cylinder 30, an inlet hole 31 of the above-described outside air suction passage is formed, and the inlet hole and the outlet hole 17 are provided between these two holes. The outside air suction passage 32 is formed by the groove formed in the upper surface of the cap-like connecting member top plate. Plunger guide cylinder
A second through-hole is formed in the upper vertical cylindrical portion 27 to communicate with the above-described first through-hole to form a liquid inlet / outlet 22.

The trigger 41 is provided so as to be swingable in the front-rear direction with the upper part pivotally attached to the front part of the injection cylinder described above, and is normally fitted to the rear part of the upper part of the trigger so as to be slidable in the cylinder. The plunger 45 is pivotally attached to the front. The plunger 45 has a large-diameter portion 46 at the rear end, and the outer surface of the large-diameter portion is fitted watertight to the inner surface of the cylinder. Large diameter part
The inner edge of the rear end of 46 is also pressed against the outer surface of the plunger guide cylinder 27 in a watertight manner. The plunger 45 is urged forward by a spring 48 provided inside the plunge cylinder 27.

In the above configuration, when the trigger 41 is pulled, the suction valve 21 is closed, so that the pressure in the cylinder 28 causes the liquid in the cylinder to flow into the injection cylinder through the liquid inlet / outlet 22 as described above. When the trigger is released, the discharge valve is closed, the suction valve 21 is opened, the suction valve 21 is opened, and the liquid in the container passes through the suction pipe 23. The liquid is sucked into the cylinder through the liquid inlet / outlet. When the liquid in the container is reduced to a negative pressure, when the large-diameter portion 46 of the plunger 45 moves backward, the outside air flows into the container through the outside air suction passage 32 by opening the inlet hole 31,
When the negative pressure state is canceled and the plunger 45 is returned to the front limit by the bias, the large diameter portion 46 seals the inlet hole 31.

The above is a description of a typical known example of a trigger-type liquid ejection container used upright. In the present invention, a liquid ejection container for both upright use is provided as follows. As described above, the liquid inlet / outlet 22 and the ball valve type suction valve 21 for erecting use a vertical cylinder 26 front wall portion and a front wall portion that close the rear surface between the plunger guide cylinder 27 and the cylinder 28 as in the above-described conventional example. Suction main cylinder
15 First below the liquid inlet / outlet 22 pierced at the top of the front wall
A ball valve type suction valve 21 with a sphere 20 is provided.

[0013] The liquid suction path for inversion is provided by the suction main cylinder 15.
A groove 61 provided between the outer surface and the inner surface of the vertical cylinder has an opening 62 formed in the lower surface of the cap-like connecting member top plate 13 and an opening 63 formed in the cylinder wall portion of the vertical cylinder 26 surrounded by the plunger guide cylinder 27. One passage and a second passage formed by a front end face open groove 64 formed in the outer surface of the plunger guide cylinder 27 along the cylinder direction except for the rear part. When the plunger 45 is retracted by the pulling of the trigger 41 as shown in FIG. 2, the rear end of the second passage is opened into the rear of the cylinder with the plunger 45 located at the front end. After being closed by the inner surface, and after being closed in this way, the plunger is further retracted, so that the pressure chamber 65 formed in the cylinder chamber behind the rear end of the groove 64 is provided to be pressurized.

Further, a ball valve type check valve 66 for closing a suction passage for establishment when the suction main pipe portion formed below the liquid inlet / outlet port 22 and the suction pipe 23 is formed is provided. In the illustrated example, the inward flange for forming the first valve seat of the suction valve 21 is shown.
19 The lower surface is formed in the second valve seat 67, a plurality of engaging projections 68 are attached to the inner surface of the cylindrical portion below the second valve seat, and the second sphere 69 is placed on these engaging projections. When the container body was inverted, the second sphere 69 was provided so as to close the second valve seat 67 as shown in FIG.
In this manner, the inward flange for forming the first valve seat is formed.
Reference numeral 19 denotes a first valve seat 18 on the upper surface and a second valve seat 67 on the lower surface.
, Respectively, is convenient. However, the ball valve type check valve 66 may be provided with a second valve seat 67 separately, or may be provided between the suction valve 21 and the liquid inlet / outlet 22.

In the illustrated example, the inside of the cap-shaped connecting member 11 around the lower surface side of the outlet hole 17 of the outside air suction passage is surrounded by a hole 71 having a lower surface opening. An outside air suction pipe 72 having a small inner diameter and an upper end having a large diameter and having no water permeability was hung down. The pipe is provided so that liquid in the container does not leak through the pipe and the outside air suction passage when the container is used upside down, and its length is related to the hole diameter of the pipe. What is necessary is just to provide so that a liquid may not leak through a pipe. When the pipe hole diameter is large, the pipe length is large, and when the pipe hole diameter is small, the pipe length can be reduced. It should be noted that a check valve may be appropriately provided in the hole 71 in place of the outside air suction pipe.

In the above configuration, the liquid ejection operation at the time of erecting can be performed by a normal operation as described above. At the time of inverted use, the upper end of the suction pipe 23 is exposed above the liquid level in the container body, but as shown in FIG. 3, the second sphere 69 closes the second valve body 67 and the ball valve type inverted Even if the trigger 41 is operated in this state to close the stop valve 66, the air in the container does not enter the cylinder 28 through the suction pipe 23. When the trigger shown in FIG. 3 is pulled by the trigger 41, the plunger 45 retreats and closes the second passage formed by the groove 64. Then, the pressure in the pressurizing chamber 65 at the rear of the cylinder becomes high, and then the pressure in the injection cylinder increases. The known discharge valve provided in the nozzle is opened, and is ejected from the nozzle 51. Next, when the trigger is released, the plunger 45 moves forward because it is biased. At this time, the pressure in the cylinder is reduced to a negative pressure because the discharge valve is closed. Further, when the plunger 45 moves forward and moves rearward from the rear end of the groove 64 forming the second passage, the first passage and the groove formed by the groove 61 and the openings 62 and 63 are formed.
The liquid in the container flows into the cylinder through the second passage formed by 64. The inlet hole 31 of the outside air suction passage is closed by the outer surface of the large diameter portion 46 at the rear end of the outside air plunger, but is opened when the plunger 45 is retracted. When the inside of the container becomes negative pressure due to the decrease of the liquid, outside air flows in through the outside air suction passage, and the negative pressure state is eliminated.

[0017]

According to the present invention, the liquid suction passage for inversion is provided between the outer surface of the suction main cylinder 15 and the inner surface of the vertical cylinder 26. Openings 62, respectively, in the lower surface of the top plate 13 of the cap-shaped member and the cylindrical portion of the vertical cylinder 26 surrounded by the plunger guide cylinder 27 through the groove 61 provided.
63, and a second passage formed by a front end open groove 64 formed in the outer surface of the plunger guide cylinder 27 excluding the rear portion along the cylinder direction, thereby forming the container body and the second passage. Groove 64
Pressurizing chamber 65 formed by the cylinder chamber behind the rear end of
Since it is formed so as to communicate with the inside, there is no need to use a suction pipe for suction when inverting or a trifurcated connecting pipe as in the conventional example described above, and the suction pipe used for erecting is drooped into the container body. It is easy to attach / detach the liquid ejector to / from the container when replenishing the container with liquid. Further, the liquid passage portion between the liquid inlet / outlet 22 and the upper end of the suction pipe 23 is closed at the time of inversion when the liquid is in the lower side of the liquid inlet / outlet 22 and on the inner surface of the suction main cylinder 15 at one of the upper and lower sides of the suction valve 21. In addition, since the ball valve type check valve 66 that opens when the erecting member is provided is provided, it is possible to prevent the air in the container from being sucked into the cylinder via the suction pipe 23 during the trigger operation in the inverted state.

In the case of the second aspect, the effects of the first aspect of the present invention are provided, and the second valve seat 67 of the ball valve type check valve 66 is provided with the first valve seat 18 of the suction valve 21 as the upper surface. , The valve structure can be simplified.

According to a third aspect of the present invention, there is provided a cap-like connecting member having the effects of the first and second aspects of the present invention.
The inside of the cap-shaped connecting member around the lower surface side of the outlet hole 17 of the outside air suction passage formed in the front of the top plate 13 of
An outside air suction pipe having a small inner diameter and having no water permeability, the upper end of which is fitted into the hole-shaped portion and which communicates with the outlet hole 17.
Since the 72 is hung, the pipe functions as a check valve, and the structure can be simplified as compared with a case where a normal check valve is provided on the lower surface side of the outlet hole 17.

[Brief description of the drawings]

FIG. 1 is a side view in which a main part of a liquid ejection container of the present invention is cut away.

FIG. 2 is an enlarged view of a main part of FIG. 1;

FIG. 3 shows FIG. 2 in an inverted state of the container.

[Explanation of symbols]

11 ... Cap-shaped connecting member 15 ... Suction main cylinder 17 ... Outlet hole 21 ... Suction valve 25 ... Ejector main body 27 ... Plunger guide cylinder 28 ... Cylinder 45 ... Plunger

Claims (3)

[Claims] 1. A container body 1 erecting a mouth-neck part 2, a mounting cylinder 5 fitted to the outer surface of the mouth-neck part, and a top plate held by the mounting cylinder at a container body mouth closing position.
13, a cap-shaped coupling 11 member penetrating the suction main cylinder 15, a plunger guide cylinder 27, and a cylinder coaxially surrounding the cylinder from an intermediate portion of the vertical cylinder 26 fitted to the outer surface of the suction main cylinder. 28, the upper end of the vertical cylinder projects forward from the injection cylinder, and the lower end of the vertical cylinder uses the bottom wall of the rear of the cylinder as a part of the upper surface closing wall from the lower part of the vertical cylinder to close the lower end of the vertical cylinder. An ejector main body 25 having the fitting tube 30 hanging down and the fitting tube fitted to the upper outer surface of the cap-shaped connecting member 11 .By operating the trigger 41 which is hung down from the front of the injection tube, The plunger 45 with the rear part fitted into the cylinder is moved forward and backward,
In a trigger type liquid ejector provided with a liquid in the container into a cylinder via a suction pipe 23 hanging down from a lower end of the suction main cylinder 15 and the liquid in the cylinder capable of being ejected from a nozzle at a front end of the injection cylinder, The erecting liquid inlet / outlet 22 communicating between the inside of the suction main cylinder 15 and the suction main cylinder 15 is connected to the plunger guide cylinder 27 and the cylinder 28.
A vertical cylinder front wall portion that closes the rear surface between the vertical cylinder front wall portion and the suction main cylinder front wall portion that is in contact with the vertical cylinder front wall portion. And a vertical cylinder surrounded by a lower surface of the cap-shaped connecting member top plate 13 and a plunger guide cylinder 27 through a passage provided between the outer surface of the suction main cylinder 15 and the inner surface of the vertical cylinder 26. 6 holes on the cylinder wall
A first passage for forming the first and second passages 63 and a second passage formed by a front end groove 64 formed in the outer surface of the plunger guide cylinder 27 except for the rear part thereof along the cylinder direction. Communicating with the inside of the pressurizing chamber 65 formed by the cylinder chamber behind,
A liquid suction passage for inverting into the pressurizing chamber is formed, and the liquid inlet / outlet hole 22 is formed below the liquid inlet / outlet 22 and on the inner surface of one of the upper and lower suction main cylinders of the inlet valve 21. And a suction valve 23. A ball valve type check valve 66 that closes a liquid passage portion between an upper end of the suction pipe 23 and opens at the time of erecting. The second valve seat 67 of the ball valve type check valve 66 is provided with an inward flange 19 having the first valve seat 18 of the suction valve 21 on the upper surface.
The trigger type liquid ejector according to claim 1, wherein the trigger type liquid ejector is formed on a lower surface of the liquid supply device. 3. An outer wall of a large-diameter portion 46 at the rear end of the plunger only when the plunger 45 is located at the front end at the front of the bottom wall portion at the rear of the cylinder, forming the upper wall of the fitting cylinder 30, and An inlet hole 31 opened when the plunger retracts, and an outlet hole 17 at the front of the top plate 13 of the cap-shaped connecting member 11, respectively, to form an outside air suction passage communicating between the two holes. The inside of the cap-shaped connecting member 11 around the lower surface side of the outlet hole 17 is formed as a hole-shaped portion 71 with a lower surface opening, the upper part of which is fitted into the hole-shaped portion, and communicates with the outlet hole 17. Characterized by hanging an outside air suction pipe 72 having no water,
The trigger liquid ejector according to claim 1 or 2, wherein the liquid is ejected from the trigger.