JPS637098B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to manual fluid dispensing devices, particularly nebulizers.

Manual sprayers are widely used as household items such as ironing misters and perfume sprays. The operating principle of these sprayers is basically that of a pump, but in conventional sprayers, when the pump starts operating,
The first spray occurs before sufficient pressure is stored in the cylinder of the pump, so unless the piston is pushed down rapidly with a very strong force, the first mist sprayed will be large droplets that will drip and cover the floor. There were some drawbacks such as getting wet. In order to overcome this drawback, a method is known in which the valve on the outlet side of the pump cylinder is closed with an elastic body such as a spring so that it opens only when the internal pressure of the cylinder becomes greater than the elasticity of the spring. However, with this method, the piston must be reciprocated a considerable number of times before the internal pressure of the cylinder becomes high enough and spraying begins. Furthermore, these devices have a complex structure, a large number of parts, and manufacturing difficulties, and other deficiencies remain.

Instead of closing the valve on the outlet side of the pump cylinder with an elastic body such as a spring, a slider tube that operates as the valve on the outlet side is inserted into the pump cylinder, and the pressure inside the cylinder is reduced by pushing down the spray head. It is also well known that when the pressure rises, the slider tube is further lowered and the valve on the outlet side is opened (Japanese Patent Publication No. 51-11804). Utility Model Application No. 51-12012 has been proposed as a device using this slider tube, but the structure of the slider tube in these devices is not simple, and furthermore, the intake and exhaust during operation of the slider tube is difficult. The path is long and complicated, and the number of parts is therefore large, which poses many manufacturing difficulties.

Further, according to Japanese Patent Application Laid-Open No. 53-161317, a manual spraying device using a slider tube (cylindrical valve) operating as a valve on the outlet side of a pump cylinder, which overcomes the above-mentioned inadequacies, is disclosed. A manual spraying device with a simplified structure is disclosed, which allows a stable spraying state to be obtained by reducing the number of piston reciprocations before starting, and in which all main parts such as a valve body including an operating valve can be housed in a cylinder. There is.

More specifically, this device has a housing in the middle of the passage from the suction pipe to the spray nozzle.
A pressurized chamber is provided with an upper large-diameter cylinder and a lower small-diameter cylinder, and a sliding cylindrical valve that spans both cylinders, and when the contents of the pressurized chamber are compressed by pressing down on the spray button, This is a manual spray device (usually called a pressure accumulation type manual sprayer) in which the cylindrical valve is further pushed down and the stop valve at the top of the cylindrical valve is released. One side hole is provided in each,
The cylindrical valve in the cylinder is provided with a bucket placed between the upper and lower side holes of the large-diameter cylinder in a stationary state, and a bucket at the lower end of the cylindrical valve that reaches into the small-diameter cylinder. By providing a passage inside the valve that extends from the lower end to the upper side of the upper bucket and a side hole slightly above the upper bucket, when the cylindrical valve is in operation, an air intake passage that leads from the side hole at the top of the large diameter cylinder to the outside of the spray device is provided. is formed, and when the cylindrical valve reaches the lower end, a passage in the cylindrical valve and an exhaust passage leading from the side hole of the cylindrical valve to the side hole at the bottom of the large diameter cylinder are formed. is disclosed.

The device also includes means for closing the outside air inlet passage when not in operation, in order to compensate for the reduced pressure in the container due to the evacuation of the liquid.

However, this device still has the following two disadvantages. First, you cannot spray while standing upside down.
Secondly, these atomizers are usually equipped with a conduit passage that introduces air through the gap between the valve stem and the stem in order to compensate for the internal pressure reduction caused by the decrease in content that accompanies atomization. Because the inside is conductive for quite a long time, fluid leaks when draining while upside down or on its side. Utility Model Publication No. 55-95866 improves on the latter point. The device of Utility Model Application No. 55-95866 is extremely complicated and cannot necessarily be said to be practical today.

The present invention provides a manual fluid dispensing container that can be drained upside down, as well as sideways and upside down. Although the word atomizer is used in the description of the prior art above, all of these atomizers produce atomization by mechanical break-up action at the nozzle, and the discharge container itself is not directly related to atomization. , the term fluid dispensing container is used in this application.

According to the present invention, there is provided a housing comprising a large-diameter cylinder part and a small-diameter cylinder part, a discharge valve stem fitted into the housing and forming an elastic piston whose lower end contacts the inner surface of the large-diameter cylinder part; It consists of a sliding cylindrical valve that is fitted across the large-diameter cylinder part and the small-diameter cylinder part and performs a pressure accumulation function that operates on the principle of a water pressure device, and a check valve provided at the lower end of the small-diameter cylinder part. A pressure accumulator pump type manual fluid that has side holes as fluid passages above and below the large-diameter cylinder part, and has a function of closing the passage for introducing outside air to compensate for the reduced pressure inside the container when not in operation. In a dispensing device: a spring retainer is placed at the bottom of the small diameter cylinder part, the retainer being supported at a position above the bottom of the small diameter cylinder part and below which allows fluid to enter into the housing but not A bucket valve that does not allow reverse flow and a check valve that has the same function are provided, and a check valve that prevents fluid from flowing into the housing when the housing is inverted is provided on the inflow side of the housing. A spring locking portion and a bucket holding portion are formed on the lower side of the locking portion, and the outer peripheral edge of the spring locking portion is in close contact with the inner wall of the cylinder, while the bucket valve is fitted onto the outer periphery of the holding portion. Further, a side hole that is opened and closed by the bucket valve is bored in the side wall of the small diameter cylinder part, and a groove that communicates the small diameter cylinder part up and down is provided passing through the locking part and the holding part. A fluid dispenser is provided.

Furthermore, according to another invention of the present application, there is provided a housing including a large-diameter cylinder part and a small-diameter cylinder part, and a discharge valve that is fitted into the housing and forms an elastic piston whose lower end contacts the inner surface of the large-diameter cylinder part. a stem, a sliding cylindrical valve that is fitted across the large-diameter cylinder part and the small-diameter cylinder part of the housing and performs a pressure accumulating function that operates on the principle of a water pressure device, and a reverse valve installed at the lower end of the small-diameter cylinder part. Consisting of a stop valve, side holes are provided above and below the large diameter cylinder part as fluid passages, and have the function of closing the passage for introducing outside air in order to compensate for the reduced pressure inside the container when it is not in operation. In an accumulator pump type manual fluid dispensing device: a spring retaining force is placed at the bottom of the small diameter cylinder section, the retainer is supported above the bottom of the small diameter cylinder section, and the underside of the retainer is used to direct fluid into the housing. A bucket valve that allows fluid to enter the housing but does not allow the flow in the opposite direction, and a check valve that has the same function are provided, and a check valve that prevents fluid from flowing into the housing when the housing is inverted is provided on the inflow side of the housing. A spring locking portion is formed at the lower end of the spring holder, and a bucket holding portion is formed below the locking portion, and the outer peripheral edge of the spring locking portion is in close contact with the inner wall of the cylinder. A side hole into which a valve is fitted and which is opened and closed by the bucket valve is bored in the side wall of the small diameter cylinder part, and a groove that vertically communicates the small diameter cylinder part passes through the locking part and the holding part. Further, a fluid intake port to a side hole fixed to the housing is provided on the mouth side of the container so as to cover the side hole with a gap between the housing and the small diameter cylinder portion. A fluid dispensing device is provided, the fluid dispensing device comprising a cannula for transferring fluid to a fluid dispensing device.

Next, the present invention will be explained in detail with reference to the drawings.

In FIG. 1, the main body of the dispensing container includes a housing 2 consisting of a large diameter cylinder part 21 and a small diameter cylinder part 22, a discharge valve stem 3 fitted therein,
It is fitted across the large-diameter cylinder part and small-diameter cylinder part of the housing to prevent pressure accumulation.
a sliding cylindrical valve 4 which performs the function of build-up), a shaft-shaped spring holder 5 fitted in the small diameter cylinder part and the cavity of the sliding cylindrical valve 4, and a spring holder 5 attached to the tail end of the spring holder 5. A bucket valve 7, a spring 6 suspended between a spring retainer 5 and a shoulder 4f inside the cavity of the sliding cylindrical valve 4, and a nipple at the lower end of the housing 2 are placed loosely to allow flow into the housing. It consists of a ball valve 12 that blocks the reverse flow, and a ball valve 13 that blocks the flow into the housing when the container is inverted.A gasket 8 is inserted between the flange 2c of the housing and the mouth 11 of the container 10. , is fixed to the container by a cap 1.

In the drawing, a spray button 12 is attached to the upper end of the discharge valve stem 3, and a mechanical break-up type nozzle tip 13 is attached to the spray part, but this part may also be a dripping nozzle. .

The nipple portion at the lower end of the housing has an upper portion that connects the first ball valve 12 and the second ball valve 13.
An overhang 23a is formed to form valve seats 23b and 23c, and a suction pipe 9 is attached to the end.

The lower end 3b of the discharge valve stem 3 and the intermediate part 4b and lower end 4d of the sliding cylindrical valve 4 form buckets (cup-shaped elastic sliding pistons), each sliding on the inner wall of the housing and correspondingly known in the art. A pressure accumulator pump discharge mechanism.

The housing 2 is provided with side holes 21a and 21b above and below the large diameter cylinder part, and when the discharge valve stem 3 is pushed down, the sliding cylindrical valve 4 is also pushed down, and the gap 34 between them is closed. When moving to the position of the lower side hole 21b, the air inside the housing is discharged into the container, making it easier to pump up the liquid. The movable cylindrical valve 4 operates according to the principle of a water pressure device, and has a valve head 4a and an internal shoulder 3a of the discharge valve stem.
The point at which the seal is broken and liquid is discharged is disclosed in JP-A-53
-It is exactly the same as the device of 161317.

The device of the present invention replaces the spring 6, which was mounted directly between the internal shoulder 4f of the sliding cylindrical valve 4 and the bottom of the small-diameter cylinder portion in the prior art described above.
One feature is that it is mounted via the spring holder 5. The spring holder 5 is a rod-shaped member, and a spring locking portion 5a and a bucket valve holding portion 5d are formed therein. The spring locking portion 5a is a radially enlarged portion of the holding portion 5, and its outer peripheral edge is in close contact with the inner wall of the small diameter cylinder portion, its upper edge 5b receives the spring 6, and its lower surface 5c is Small diameter portion 22 of housing 2
It rests on the shoulder 22b of the narrow part 22a. The bucket valve 7 is a cup-shaped body made of elastomer and has a through hole, and is fitted into the bucket holding part 5d of the spring holder and rests on the bottom part 22c of the small diameter cylinder part 22 of the housing. At least one groove is provided to allow free passage of fluid through the spring catch 5a and the bucket retainer 5d. In the drawing, the left and right grooves 5e existing on the page are shown in outline.

The lower end of the small diameter cylinder portion 22 of the housing 2 forms a first valve chamber, and the ball valve 12 is placed on a valve seat 23b. This valve acts as a check valve when the device is operated upright. The nipple part 23 at the lower end of the housing 2 forms a second valve chamber, in which the second ball valve 13 is placed, with an overhang 23e for locking the ball valve and a bulge 23e for allowing free passage of fluid when the housing 2 is erected. A groove 23d is provided. The second ball valve 13 has a valve seat 23c when the device is in an inverted state.
It sits on top and prevents fluid (gas) from entering the housing from the head space (bottom of the container). This ball valve 13 is forced in from the underside of the nipple against the elasticity of the material.

With this configuration, when discharging upright, it functions in the same way as the device of Japanese Patent Application Laid-Open No. 161317/1983. However, in the device of the present application, the lower part of the small diameter cylinder part, the bucket valve 7
A side hole 22d is provided below the piston contact portion 7a. This side hole 22d has no effect at all during upright discharge. The direct diameter of this side hole is extremely narrow compared to the fluid passage 23f of the nipple portion.

When the device is used in an inverted position, the ball valve 13 sits on the valve seat 23c, as seen in FIG. 2, closing the passage from the head space (bottom of the container). In this state, when the discharge valve stem 3 is pushed up (depressed; hereafter, the squares represent the upright state), the air inside the small diameter cylinder part 22 and the sliding cylindrical valve 4 is released from the lower part of the sliding cylindrical valve ( When the gap 34 matches the side hole 21b, the air is pushed out from the housing 2 into the interior space of the container 11.

On the other hand, the liquid is waiting for an opportunity to enter the inside of the housing 2 from the side hole 22d, but the discharge valve stem 3,
Therefore, while the sliding cylindrical valve 4 is pushed up (downward), the piston contact portion 7a of the bucket valve 7 expands and closes the side hole 22d, so that it cannot enter. However, the discharge valve stem 3 as well as the sliding cylindrical valve 4
When the liquid is pushed back by the spring 6 and lowered (raised), the pressure inside the cylinder becomes reduced, so the bucket valve 7 is bent and the passage in the side hole 22d opens, allowing liquid to enter the housing. When liquid is filled, the principle of a water pressure device works, and the seal between the valve head 4a of the sliding cylindrical valve and the internal shoulder 3a of the discharge valve stem is broken, and the liquid flows through the through hole of the sliding cylindrical valve. 4c
Emissions occur after

As shown in FIG. 1, there is a gap 1c between the discharge valve stem 3 and the support part 1a of the cap 1, and from this gap external air flows into the upper side hole 21a of the large diameter cylinder part 21. An entrance passage into the container is formed. The inner green part of the elastomer gear socket 8 hangs down as a skirt part 8b, and the lower part of the green part bulges out and contacts 8a and the large diameter cylinder part 27. When the cap is not in operation, this conduit is closed by the contact between the lower green 1a of the cap support and the shoulder of the discharge valve stem 3, but when it is in operation, it opens and the content decreases. When the internal pressure decreases, the skirt 8b opens to automatically compensate for the internal pressure.

In the embodiment shown in FIGS. 1 and 2, the side hole 2 is the entrance path for the liquid into the housing during inversion
Since 2d is located at a relatively distant (high) position from the mouth of the container (bottom when inverted), it becomes difficult to discharge the container in an inverted state after the content becomes low. To compensate for this, according to the invention, a device as shown in FIG. 3 is provided.

The apparatus shown in cross-section in FIG.
The device is the same as shown in the figure. This device is the first
Compared to the device shown, the nipple part 2 of the housing 2
3 is relatively short and closely fits into the small diameter portion 230, and the small diameter cylinder portion 22 of the housing 2.
A large diameter portion 220 that overlaps with a gap on the outside of the
It has a mantle tube 200 consisting of. The upper green of this mantle tube ends at the upper end of the small diameter cylinder section 22 of the housing, but theoretically,
1 can reach directly below the lower side hole 21b. By doing so, the liquid suction position during inversion can be lowered to the upper green position of the mantle tube.

FIG. 4 is a partial sectional view showing another embodiment of this mantle tube. In this embodiment, the valve seat 230c of the second ball valve 13 is provided on the mantle tube itself,
The inner diameter of the suction pipe attachment portion of the mantle tube is made equal to the inner diameter of the nipple portion 23 of the housing 2. Thereby, if inverted discharge is not intended, the suction pipe can be directly attached to the nipple 23 without using a mantle pipe.

Although the preferred embodiments of the manual fluid dispenser of the present invention have been specifically described above, various modifications are possible. The spring holder 5 has a rod shape in the above embodiment, but this is because it is convenient to have a rod shape for holding the spring, and by adjusting the thickness of the rod, the housing (pump This is for the advantage of being able to sense the internal volume inside the cylinder, and it is not necessarily essential that it be rod-shaped.In short, it is a means of providing the valve chambers of the bucket valve and check valve at the bottom of the small diameter cylinder part. It is.

Note that the device of the present invention can be used only in the upright position by omitting the ball valve means 13. The technical scope of the present invention extends to such embodiments. This is because it is a directly Contributory aspect to the present invention.

As described above, the present invention provides a pump-type discharge device that is a pressure accumulation type and is capable of inverted discharge by adding a relatively simple mechanism to the prior art.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a preferred embodiment of the first invention of the present application. FIG. 2 is a partial view showing the apparatus according to the embodiment of FIG. 1 when used in an inverted position. FIG. 3 is a sectional view showing a preferred embodiment of the second invention of the present application. 4 is a partial cross-sectional view of another embodiment of the apparatus shown in FIG. 3; FIG. In these drawings, 21...large diameter cylinder section, 22...small diameter cylinder section, 2...housing, 3...discharge valve stem, 4...sliding cylindrical valve, 10
. . . Check valve, 21a, 21b . Bucket valve that only allows inflow of water.

Claims (1)

[Scope of Claims] 1. A housing consisting of a large-diameter cylinder portion and a small-diameter cylinder portion, a discharge valve stem fitted into the housing and forming an elastic piston whose lower end contacts the inner surface of the large-diameter cylinder portion, and the housing. It consists of a sliding cylindrical valve that is fitted across the large-diameter cylinder part and the small-diameter cylinder part and performs a pressure accumulation function that operates on the principle of a water pressure device, and a check valve installed at the lower end of the small-diameter cylinder part. , side holes serving as fluid passages are provided above and below the large-diameter cylinder portion. In an accumulator pump type manual fluid dispensing device with the function of closing the passage introducing outside air when not in operation to compensate for the reduced pressure inside the container: a spring holder is placed at the bottom of the small diameter cylinder part, the holder is a bucket valve supported at a position above the bottom of the small diameter cylinder portion and below the bucket valve to allow fluid to enter the housing but not to flow in the opposite direction;
A check valve having the same function is provided, and a check valve that prevents fluid from flowing into the housing when the housing is inverted is provided on the inflow side of the housing, and a spring locking portion and a spring locking portion are provided at the lower end of the spring holder. A bucket holding part is formed below the stop, and the outer periphery of the spring locking part is in close contact with the inner wall of the cylinder, while the bucket valve is fitted onto the outer periphery of the holding part, and the bucket valve is opened and closed by the bucket valve. A fluid dispensing device characterized in that a side hole is bored in the side wall of the small-diameter cylinder part, and a groove that communicates the small-diameter cylinder part vertically is provided through the locking part and the holding part. . 2. A housing consisting of a large-diameter cylinder part and a small-diameter cylinder part, a discharge valve stem fitted into the housing and forming an elastic piston whose lower end contacts the inner surface of the large-diameter cylinder part, and a large-diameter cylinder part of the housing. It consists of a sliding cylindrical valve that is fitted across the small-diameter cylinder part and performs a pressure accumulating function that operates on the principle of a water pressure device, and a check valve provided at the lower end of the small-diameter cylinder part, and the large-diameter cylinder part Side holes are provided above and below as fluid passages. In an accumulator pump type manual fluid dispensing device with the function of closing the passage introducing outside air when not in operation to compensate for the reduced pressure inside the container: a spring holder is placed at the bottom of the small diameter cylinder part, the holder is a bucket valve supported at a position above the bottom of the small diameter cylinder portion and below the bucket valve to allow fluid to enter the housing but not to flow in the opposite direction;
A check valve having the same function is provided, and a check valve that prevents fluid from flowing into the housing when the housing is inverted is provided on the inflow side of the housing, and a spring locking portion and a spring locking portion are provided at the lower end of the spring holder. A bucket holding part is formed on the lower side, and the outer periphery of the spring locking part is in close contact with the inner wall of the cylinder, and the bucket valve is fitted onto the outer periphery of the holding part, and the bucket valve is opened and closed by the bucket valve. A side hole is bored in the side wall of the small-diameter cylinder part, and a groove is provided through the locking part and the holding part to communicate the small-diameter cylinder part vertically. and a mantle tube for moving the fluid inlet to the side hole fixed to the housing so as to cover the side hole with a gap between the housing and the side hole to the mouth side of the container. Fluid dispensing device.