JP5894062B2 - Suction type liquid dispensing pump device - Google Patents

Description

  The present invention relates to a suction-type liquid dispensing pump device and a seal member used therefor, and more specifically, a pump device of a type provided with a vent hole for introducing outside air when the internal pressure of the liquid container is reduced is used for an airless container. The present invention relates to a seal member that can be used as a pump, and a suction-type liquid dispensing pump device that uses the seal member.

  Various liquid containers equipped with a suction-type liquid dispensing pump device that is also referred to as an airless container have been proposed and used.

  This airless container pumps liquid filled in a liquid container such as a liquid filling bag having flexibility, a liquid filling bottle made of soft synthetic resin, or a cylindrical liquid filling bottle whose bottom plate moves according to its capacity. As a result of suction / pouring in a liquid-tight and air-tight state, the liquid container collapses (shrinks) or the bottom plate moves up (shrinks) in accordance with the negative pressure inside the liquid container. The container capacity is reduced in accordance with the amount of liquid to be performed. With such a configuration, it is possible to prevent the inflow of outside air into the liquid container and to suppress the remaining liquid from being oxidized or denatured or mixed with various germs. Therefore, it is mainly used as a container for additive-free cosmetics and the like. .

  Incidentally, in a liquid container provided with a general-purpose pump means different from an airless container, a vent hole provided in a cylinder portion of the pump means when the inside of the liquid container becomes negative pressure due to suction / pouring of the liquid Thus, the above-described negative pressure does not occur by introducing outside air. With such a configuration, the liquid can be smoothly sucked and extracted even when the shape and capacity are maintained without contracting (reducing) the liquid container.

  In the case of an airless container, unlike the general pump means described above, it is essential that the cylinder part of the pump means to be used is not provided with a vent hole. It has been made or modified by diverting a general-purpose cylinder mold.

  However, the pump means for the airless container is still overwhelmingly smaller in absolute number in terms of the number of demands compared to the pump means of the general-purpose configuration. Therefore, the manufacture of a cylinder part without a vent hole by the manufacture of a new mold is not possible. High cost. Further, even in the diversion of a general-purpose cylinder part die, there is a problem that the cost cannot be restored after the mold is remodeled, resulting in a high cost.

  On the other hand, in a conventional airless container, in order to suck and dispense the liquid in the liquid container to the end, it is important to maintain not only each component member but also the connection between the component members.

  This liquid-tight / air-tight maintenance is a problem at the time of designing / manufacturing, such as component accuracy and assembly accuracy, at the time of manufacturing. It is.

  However, the connecting portion between the components, particularly the connecting portion for screwing and connecting the pump means to the mouth portion of the liquid container, is formed by screwing the upper surface of the mouth portion and the lower surface of the connecting portion of the pump means facing the upper surface. Since it is configured to ensure liquid-tightness and air-tightness by adhering to each other, if the screwing is loosened even slightly during use, a gap is created in the closely connected part, resulting in liquid-tightness and air-tightness. However, there is a problem that it is quickly lowered or lost.

  In order to suppress the loosening of this screwing, even if the liquid-tightness and the airtightness are further improved by interposing a rubber-like or silicon resin-made disc-shaped sealing member between the connecting parts, Since the problem of looseness occurs at the stage where the manufacturer (and the seller) leaves the user and reaches the user, it is difficult to take measures to solve the problem. In particular, when the user is an elderly person, the frequency of occurrence of this loosening not only increases remarkably, but also continues to be used without noticing that the screwing is loosened. There is a possibility that a problem in safety may occur, such as a drop in the discharge performance, and the liquid in the liquid container cannot be used up, or various bacteria or the like are mixed in the liquid container together with outside air.

  Therefore, for example, Patent Document 1 proposes a technique in which a loosening prevention stopper is provided so that the screwing of the pump means screwed to the mouth of the liquid container is not loosened during use.

JP-A-11-147556

  In the technique of Patent Document 1, it is possible to prevent the screw connection part from being loosened during use, but when the user replaces the refill container for refilling or the like, There is a problem that a suction / pumping defect occurs from the start of use or a problem of contamination with germs occurs.

  Therefore, an object of the present invention is to use a general-purpose pump means used in a general pump-type liquid container as a pump means for an airless container at a low cost without any special modification. An object of the present invention is to provide a suction type liquid dispensing pump device and a seal member used therefor.

  The present invention for solving the above problems has the following configuration.

1. A liquid container, and a pump unit that is attached to the liquid container and sucks and dispenses the liquid filled therein,
In the suction-type liquid dispensing pump apparatus configured such that at least the liquid storage portion contracts (shrinks) due to internal negative pressure at the time of suction / pumping of the liquid in the liquid container,
The pump means includes a cylinder part, a piston part loaded in the cylinder part, and a nozzle head part that operates the piston part, and is used for introducing outside air when the internal negative pressure of the liquid container is reduced in the cylinder part. It is a configuration with vents,
The liquid container has a mounting part for mounting the pump means,
Furthermore, when the pump means is mounted on the liquid container, the seal member having the following configuration is interposed between the pump means and the mounting portion.
A suction-type liquid dispensing pump device characterized by.
[Configuration of seal member]
An annular flange portion facing the upper surface of the entire circumference of the tip of the mounting portion, and a cylindrical portion that is suspended from the inner edge of the annular ring of the flange portion,
The inner peripheral surface of the cylindrical portion can be in close contact with the outer peripheral surface of the cylinder portion in a liquid-tight and air-tight state, and can block a vent hole provided in the cylinder portion,
And the outer peripheral surface of the said cylindrical part is the structure which can be closely_contact | adhered in a liquid-tight and airtight state to the inner peripheral surface of the said mounting part.

2. 2. The suction type liquid dispensing pump device according to 1 above, wherein the seal member is made of a soft synthetic resin, a natural rubber, a synthetic rubber, or a mixture thereof.

3. The liquid container is a bottle made of a soft synthetic resin, and is configured to contract as the internal negative pressure is generated by suction and extraction of the liquid in the liquid container, and the mouth of the bottle container 3. The suction type liquid dispensing pump device according to 1 or 2 above, wherein the suction type liquid dispensing pump device is capable of being mounted while maintaining liquid tightness and air tightness.

4). The liquid container is a flexible bag body, and a mounting portion capable of mounting the pump means in a state of maintaining liquid tightness and air tightness is attached to the opening of the bag body. 3. The suction-type liquid dispensing pump device according to 1 or 2 above.

5. The liquid container is made of a synthetic resin, glass or metal cylindrical barrel, the mounting portion of the pump means attached to the upper portion of the barrel, and the entire circumference of the inner peripheral surface of the barrel. A bottle container having a liquid-tight and air-tight state and a bottom portion that is slidably fitted;
The bottom portion of the liquid container moves upward in the barrel while maintaining liquid tightness and air tightness in accordance with internal negative pressure due to suction and extraction of the liquid in the liquid container, whereby the liquid storage portion of the liquid container 3. The suction type liquid dispensing pump device as described in 1 or 2 above, wherein the capacity of the suction liquid is reduced.

6). 6. The suction-type liquid dispensing pump device according to any one of the above 1 to 5, wherein the pump means is screwed to the mounting portion of the liquid container.

7 . A liquid container, and a pump unit that is attached to the liquid container and sucks and dispenses the liquid filled therein,
In the suction-type liquid dispensing pump apparatus configured such that at least the liquid storage portion contracts (shrinks) due to internal negative pressure at the time of suction / pumping of the liquid in the liquid container,
The pump means includes a cylinder part, a piston part loaded in the cylinder part, and a nozzle head part that operates the piston part, and is used for introducing outside air when the internal negative pressure of the liquid container is reduced in the cylinder part. It is a configuration with vents,
The liquid container has a mounting part for mounting the pump means,
Furthermore, when the pump means is mounted on the liquid container, the seal member having the following configuration is interposed between the pump means and the mounting portion.
A suction-type liquid dispensing pump device characterized by.
[Configuration of seal member]
An outer cylindrical body part into which at least a part of the liquid container is attached to the mounting part of the liquid container so that at least a part of the outer peripheral surface can be closely attached to the mounting part of the liquid container;
An inner cylindrical body portion that is fitted and attached to the outer peripheral surface of the liquid outlet at the lower end of the cylinder portion so that the inner peripheral surface can be closely attached in a liquid-tight and air-tight state,
The inner cylindrical body portion is connected to the outer cylindrical body portion in a liquid-tight / air-tight state inside the outer cylindrical body portion, so that the inner cylindrical body portion and the outer cylindrical body portion are interposed therebetween. And is configured to communicate the liquid outlet of the cylinder part and the inside of the liquid container,
In this configuration, the introduction of outside air when the internal negative pressure in the liquid container is reduced is blocked on the upstream side from the position where the vent hole of the cylinder portion is provided.

8 . 8. The suction-type liquid dispensing pump device as described in 7 above, wherein the outer cylindrical body part and the inner cylindrical body part are integrated.

9 . 8. The suction-type liquid dispensing pump device according to 7 above, wherein the outer cylindrical body part and the inner cylindrical body part have a separate configuration.

10 . The 7-9 where the liquid container is a bag made of soft synthetic resin, upstream tip of the outer cylindrical body portion is characterized by a configurable pierceable fluid-tight and air-tight state in the bag The suction type liquid dispensing pump device according to any one of the above.

11 . The liquid container is a bottle made of a soft synthetic resin, and is configured to contract as the internal negative pressure is generated by suction and extraction of the liquid in the liquid container, and the mouth of the bottle container 10. The suction type liquid dispensing pump device according to any one of the above 7 to 9 , wherein the suction type liquid dispensing pump device is configured to be mounted while maintaining liquid tightness and air tightness.

12 . The liquid container is a flexible bag body, and a mounting portion capable of mounting the pump means in a state of maintaining liquid tightness and air tightness is attached to the opening of the bag body. 10. The suction type liquid dispensing pump device according to any one of 7 to 9 above.

13 . The liquid container is made of a synthetic resin, glass or metal cylindrical barrel, the mounting portion of the pump means attached to the upper portion of the barrel, and the entire circumference of the inner peripheral surface of the barrel. A bottle container having a liquid-tight and air-tight state and a bottom portion that is slidably fitted;
The bottom portion of the liquid container moves upward in the barrel while maintaining liquid tightness and air tightness in accordance with internal negative pressure due to suction and extraction of the liquid in the liquid container, whereby the liquid storage portion of the liquid container The suction type liquid dispensing pump device according to any one of 7 to 9 , wherein the capacity of the suction liquid is reduced.

  According to the invention shown in claim 1 or claim 7, the general-purpose pump means used in a general pump type liquid container is diverted as a pump means for an airless container without any special modification. It is possible to provide a suction-type liquid dispensing pump device that can be used at low cost, or a seal member used therefor.

  In particular, by using a seal member that can close the vent hole of the cylinder portion, a general-purpose pump means provided with a vent hole can be used as a pump means for an airless container without modification, Since new molds and mold modifications are not required, the cost is low.

  Furthermore, according to the invention shown in claim 1 or claim 7, the suction-type liquid dispensing pump device that can easily maintain the liquid-tightness and air-tightness between the pump means and the liquid container, or the seal member used therefor Can be provided.

  In particular, the cylindrical part of the seal member is in close contact with each of the outer peripheral surface of the cylinder part and the inner peripheral surface of the mounting part of the liquid container, so that the liquid-tightness and air-tightness at the connection part between the pump means and the liquid container are improved In addition, since the liquid-tight and air-tight holding by this close contact acts over the length of the cylindrical portion, not only is the screwing difficult to loosen, but also this tightly closed cylindrical portion As long as the length is not dropped from the mounting portion of the liquid container, the liquid-tightness and air-tightness can be maintained even when the screwing of the connecting portion is loosened.

  Furthermore, even when the user replaces the refill container with a refill container, etc., even if the screwing is not completely performed, the pump means and the liquid container are provided within the length range of the cylindrical portion of the seal member. Liquid tightness and air tightness can be maintained as long as the connection part is applied.

  According to the invention shown in claim 2 or claim 8, it is possible to further improve liquid tightness and air tightness.

  According to the invention shown in claim 3, claim 4, or claim 5, it can correspond to various forms of liquid containers for airless containers.

  According to the sixth aspect of the present invention, the liquid container and the pump means can be more reliably connected.

  According to the invention shown in claim 9 or claim 16, the general-purpose pump means used in a general pump type liquid container is diverted as a pump means for an airless container without any special modification. It is possible to provide a suction-type liquid dispensing pump device that can be used at low cost, or a seal member used therefor.

  In particular, since the sealing member composed of the outer cylindrical body portion and the inner cylindrical body portion can block the introduction of outside air at the time of internal negative pressure upstream from the position where the vent hole of the cylinder portion is provided, A general-purpose pump means provided with a vent hole can be used without any modification, so that it can be used as a pump means for an airless container, and a new mold or a modification of the mold becomes unnecessary, so that the cost is low.

  According to the invention shown in claim 12, claim 13, claim 14, or claim 15, it can correspond to various types of liquid containers for airless containers.

Schematic explanatory drawing (partially cutaway view) showing an example of the usage example of the first embodiment of the seal member according to the present invention 4 view of the sealing member of FIG. 1 (front view, plan view, bottom view, AA cross-sectional view) Schematic explanatory drawing (partial sectional view) showing another example of the usage example of the seal member of FIG. Schematic principal part sectional drawing which shows the state which interposed the sealing member between the pump means and the mounting part. Schematic explanatory drawing which shows the structure of one Example of the suction type liquid extraction pump apparatus which concerns on this invention. The schematic explanatory drawing which shows the structure of the other Example of the suction type liquid extraction pump apparatus which concerns on this invention. The schematic explanatory drawing which shows the structure of the other Example of the suction type liquid extraction pump apparatus which concerns on this invention. 3 side view (front view, plan view, AA cross-sectional view) showing another embodiment of the sealing member according to the present invention Schematic explanatory drawing (partially cutaway view, partly sectional view) showing an example of the usage example of the second embodiment (part 1) of the seal member according to the present invention Schematic explanatory drawing (partial sectional view) showing an example of a usage example of the second embodiment (part 2) of the sealing member according to the present invention.

  Hereinafter, the suction-type liquid dispensing pump device according to the present invention (hereinafter sometimes simply referred to as a pump device) and a seal member used therefor (hereinafter also simply referred to as a seal member) will be described in detail with reference to the drawings. Explained.

  The pump device of the present invention includes shampoos, conditioners, treatments, other hair products, cosmetic liquids, toothpastes, sauces, mayonnaise, edible oils, machine oils, and other various liquids (gel-like or jelly-like high-viscosity liquids). In a liquid container such as a liquid filling bag having flexibility, a liquid filling bottle made of a soft synthetic resin, or a cylindrical liquid filling bottle whose bottom plate moves according to the capacity, Suction / pourout in a liquid-tight and air-tight state, and the liquid container is crushed (shrinkage) or the bottom plate moves up (shrinks) in accordance with the negative pressure inside the liquid container due to this suction / pour-out. It has an airless container configuration in which the capacity of the liquid storage portion decreases according to the amount of liquid. With such a configuration, it is possible to prevent the outside air from flowing into the liquid container, and to suppress the remaining liquid from being oxidized or denatured, or mixed with various germs, and thus is particularly suitable as a container for additive-free cosmetics.

  The first embodiment shown in FIGS. 1 to 8 will be described below.

As a specific configuration example of the pump device 1 of the present invention, as shown in FIGS.
A liquid container 2; and pump means 3 that is attached to the liquid container 2 and sucks and dispenses the liquid filled therein.
In the pump apparatus 1 configured such that the liquid container 2 is contracted (reduced) at least by the internal negative pressure when the liquid in the liquid container 2 is sucked and dispensed,
The pump means 3 has a cylinder part 31, a piston part 32 loaded in the cylinder part 31, and a nozzle head part 33 for operating the piston part 32, and the cylinder part 31 has an internal negative of the liquid container 2. It is a configuration provided with a vent hole 34 for introducing outside air during compression,
The liquid container 2 is configured to have a mounting portion 21 for mounting the pump means 3;
Furthermore, when the pump means 3 is mounted on the liquid container 2, the seal member 4 having the following configuration is interposed between the pump means 3 and the mounting portion 21.
It is characterized by.

The seal member 4 of the present invention can use a general-purpose pump means 3 provided with a vent hole 34 for introducing outside air when the internal pressure of the liquid container 2 is reduced as a pump means of an airless container configuration. Yes, as a specific configuration example,
An annular flange portion 41 that faces the upper surface of the entire circumference of the tip of the mounting portion 21 and a cylindrical portion 42 that is suspended from the inner edge of the annular portion of the flange portion 41 (particularly FIG. 2). reference),
The inner peripheral surface of the cylindrical portion 41 can be in close contact with the outer peripheral surface of the cylinder portion 31 in a liquid-tight / air-tight state, and can block the vent hole 34 provided in the cylinder portion 31 (particularly, FIG. 4),
And the outer peripheral surface of the said cylindrical part 42 is the structure which can be closely_contact | adhered to the inner peripheral surface of the said mounting part 21 in a liquid-tight / airtight state (refer especially FIG. 4),
It is characterized by.

  Hereinafter, each component will be described in more detail.

  The liquid container 2 is a liquid container having this main airless container, such as a liquid filling bag having flexibility, a liquid filling bottle made of a soft synthetic resin, or a cylindrical liquid filling bottle whose bottom plate moves according to its capacity. Known and publicly available materials can be used without any particular limitation, and preferred examples include those shown in FIGS.

  The liquid container 2 shown in FIG. 5 and FIG. 6 is a bottle container made of a soft synthetic resin, and is configured to contract in accordance with internal negative pressure due to suction and extraction of the liquid in the liquid container 2. The mouth portion is provided with a mounting portion 21 that can be mounted in a state where the pump means 3 is kept liquid-tight and air-tight.

  In addition, in the liquid container 2 of the aspect shown in FIG. 6, it accommodates in the case part 5 used as the outer shell of a bottle container so that it can become independent even if it shrinks | contracts with the suction and extraction of a liquid. The composition is taken. The case portion 5 includes an accommodation body portion 51 that accommodates the liquid container 2 and a fixed lid portion 52 that serves as a lid of the accommodation body portion 51. The fixed lid portion 52 is formed with a through hole through which the mounting portion 2 of the liquid container 2 is inserted.

  The liquid container 2 shown in FIG. 7 is a bag having a structure in which the periphery of a sheet or film made of a single layer or a laminated synthetic resin having flexibility is sealed and welded, and the pump means is provided at the opening of the bag. 3 is provided with a mounting portion 21 that can be mounted in a state where the liquid-tightness and the air-tightness of 3 are maintained. In addition, as this bag body, the structure which vapor-deposits metals, such as aluminum, or laminates the metal, such as aluminum made into the sheet form or the film form, can also be taken.

Furthermore, as the liquid container 2 used in the present invention, in addition to the above-described embodiments, for example, a cylindrical body made of synthetic resin, glass, or metal, and the above-mentioned attached to the upper part of the body A bottle container comprising: a mounting portion for the pump means; and a bottom portion that is slidably fitted to the entire inner peripheral surface of the barrel portion while maintaining liquid-tightness and airtightness. Yes,
The bottom portion of the liquid container moves upward in the barrel while maintaining liquid tightness and air tightness in accordance with internal negative pressure due to suction and extraction of the liquid in the liquid container, whereby the liquid storage portion of the liquid container The thing of the structure which reduces the capacity | capacitance of can also be mentioned.

  The pump means 3 which will be described in detail below is connected to the mounting portion 21 provided in the liquid container 2 having the above configuration while maintaining liquid tightness and air tightness. The connection of the pump means 3 to the mounting portion 21 is a screwed configuration, not only in terms of maintaining liquid-tightness and airtightness, but also in the ease of connection mounting, the simplicity of the connection configuration, the refill container and It is most preferable from the viewpoint of the ease of replacement.

  As described above, the pump means 3 is a general-purpose pump means that is not an airless container structure in the present invention, that is, a negative pressure is generated in the liquid container 2 as the liquid is sucked and dispensed. In order to prevent outside air from entering into the liquid container 2, the pump means 2 having a configuration in which the cylinder portion 31 is provided with a vent hole 34 can be used. Is a pump means for sucking and dispensing the liquid filled in the liquid container 2 and is a general-purpose pump means that is not a pump means used for the construction of an airless container, a publicly known pump means can be used without any particular limitation. it can.

  The suction / pumping of the liquid by the pump means 2 is performed by pushing the nozzle head portion 33 to operate the piston portion 32 in the cylinder portion 31 so that the liquid is sucked / poured and discharged from the nozzle head portion 33. can do. Since the pump configuration of the pump means 3 is a general pump configuration used in this type of liquid take-out device, the description of the pump mechanism of the pump means 3 is omitted in this specification. In addition, the nozzle head portion 33 is not limited to the push-in operation type of this embodiment, and a trigger operation type and other publicly known configurations can be adopted without any particular limitation.

  The sealing member 4 is a soft synthetic resin which is a publicly known material as a sealing member such as a packing disposed so as to be interposed in a connecting portion or the like that ensures liquid tightness and air tightness in this type of liquid take-out device or the like It is preferably formed of any one of made of natural rubber, synthetic rubber, or a mixture thereof.

  In order to dispose the seal member 4 between the mounting portion 21 of the liquid container 2 and the pump means 3, the seal member 4 is placed on the cylinder portion 31 of the pump means 3 from below as shown in FIG. After being inserted and attached, the pump means 3 to which the seal member 4 is attached may be connected (screwed connection) to the mounting portion 21 of the liquid container 2, or the mounting portion 21 of the liquid container 2 as shown in FIG. Then, the pump means 3 may be connected (screwed connection) to the mounting portion 21 of the liquid container 2 to which the seal member 4 is attached.

  As shown in FIG. 1, the seal member 4 inserted and attached to the cylinder portion 31 of the pump means 3 has an inner peripheral surface of the cylindrical portion 42 that is in close contact with the outer peripheral surface of the cylinder portion 31 in a liquid-tight and air-tight state. The ventilation hole 34 provided in the portion 31 is closed.

  Further, as shown in FIG. 3, in the sealing member 4 fitted and attached to the mounting portion 21 of the liquid container 2, the outer peripheral surface of the cylindrical portion 42 is in close contact with the inner peripheral surface of the mounting portion 21 in a liquid-tight / air-tight state. It becomes a state.

  1 and FIG. 3, after the pump means 3 is connected to the mounting portion 21 of the liquid container 2, the mounting portion 21 is formed by the cylindrical portion 42 of the seal member 4 as shown in FIG. The inner peripheral surface and the outer peripheral surface of the cylinder part 31 are maintained in a liquid-tight / air-tight state. Furthermore, the upper surface of the flange portion 41 of the seal member 4 is in close contact with the lower surface of the upper member of the cylinder portion 31 of the pump means 3, and the lower surface of the flange portion 41 is in close contact with the upper surface of the entire circumference of the tip of the mounting portion 21. Even in this portion, the liquid-tight / air-tight state can be maintained.

  The liquid-tight / air-tight state of the seal member 4 acts over the length of the cylindrical portion 42 of the seal member 4, so that not only the connection is difficult to loosen, but also the close contact As long as the length of the cylindrical part 42 does not fall off from the mounting part 21 of the liquid container 2, even if the screwing of the connecting part is loosened, the liquid tightness and the air tightness can be maintained.

  As described above, the suction-type liquid dispensing pump device according to the present invention and the seal member used therefor have been described based on the embodiments. However, the present invention is not limited to the above-described embodiments, and other embodiments are within the scope of the present invention. It can also be taken.

  For example, when the seal member 4 is attached to the mounting portion 21 of the liquid container 2, the cylindrical portion 42 is arranged so that the distal end portion of the cylindrical portion 42 can be easily inserted into the mounting portion 21. As shown in FIG. 8, the shape may be a tapered shape having a stepped portion.

  Further, instead of the general-purpose pump means provided with the vent hole used in the present invention, the above-described seal member of the present invention is used even when the pump means of the airless container configuration not provided with the vent hole is used. Since the liquid-tightness and air-tightness of the cylindrical portion of the seal member acts, the connection is not easily loosened. As long as the length does not fall off from the mounting portion of the liquid container, even if the screwing of the connecting portion is loosened, the effect of maintaining liquid tightness and air tightness is exhibited.

  Next, a second embodiment (part 1) shown in FIG. 9 and a second embodiment (part 2) shown in FIG. 10 will be described. In the second embodiment (part 1) and the second embodiment (part 2), the components having the same reference numerals as those in the first embodiment described above are the same in basic configuration, and the description thereof is omitted.

  First, the seal member 140 of the second embodiment (part 1) shown in FIG. 9 will be described.

As shown in FIG. 9C, at least a part of the seal member 140 is attached to the mounting portion 21 of the liquid container 2 so that the outer peripheral surface can be in close contact with the liquid container 2 in an airtight state. An outer cylindrical body part 141 entering inside;
As shown in FIG. 9 (B-2), the inner cylindrical body is fitted and attached to the outer peripheral surface of the liquid outlet 35 at the lower end of the cylinder portion 31 so that the inner peripheral surface can be brought into close contact with the liquid-tight / air-tight state. Part 142, and
As shown in (B-2) of FIG. 9, the inner cylindrical body 142 is connected to the outer cylindrical body 141 in a liquid-tight / air-tight state inside the outer cylindrical body 141. Thus, as shown in FIG. 9C, the liquid outlet 35 of the cylinder part 31 and the inside of the liquid container 2 communicate with each other via the inner cylindrical body part 142 and the outer cylindrical body part 141. And
The configuration is such that the introduction of outside air at the time of internal negative pressure in the liquid container 2 is blocked on the upstream side (lower side in this embodiment) from the position where the vent hole 34 of the cylinder portion 31 is provided.

  In this embodiment, the liquid container 2 is formed of a soft synthetic resin bag body, and the piercing portion 141A at the upstream end of the outer cylindrical body portion 141 of the seal member 140 is in a liquid-tight / air-tight state in the bag body. By piercing, the liquid inside the bag is sucked and poured out.

  In this embodiment, the mounting portion 21 to which the pump means 3 is attached is a portion into which the piercing portion 141A of the seal member 140 connected to the pump means 3 is pierced.

  In addition, the liquid container 2 made of a soft synthetic resin bag is accommodated in the outer case body 6 as shown in FIG. 9C, and the pump means 3 is screwed to the outer case body 6. It is fixed by that. When the pump unit 3 is screwed and attached to the exterior case body 6, the flange portion 141 </ b> B that is the upper end portion of the seal member 140 is clamped and fixed between the upper end surface of the exterior case body 6 and the pump unit 3. Become.

  In the seal member 140 of the second embodiment (part 1), the outer cylindrical body part 141 and the inner cylindrical body part 142 are a single member having an integrated configuration.

  Next, the seal member 140 of the second embodiment (part 2) shown in FIG. 10 will be described.

As shown in FIG. 10D, at least a part of the seal member 140 is attached to the mounting portion 21 of the liquid container 2 so that the outer peripheral surface can be in close contact with the liquid container 2 in an airtight state. An outer cylindrical body part 141 entering inside;
As shown in FIG. 10 (C-2), the inner cylindrical body is fitted and attached to the outer peripheral surface of the liquid outlet 35 at the lower end of the cylinder portion 31 so that the inner peripheral surface can be brought into close contact with the liquid-tight / air-tight state. Part 142, and
As shown in FIG. 10C-2, the inner cylindrical body 142 is connected to the outer cylindrical body 141 in a liquid-tight / air-tight state inside the outer cylindrical body 141. Thus, the liquid outlet 35 of the cylinder part 31 and the inside of the liquid container 2 communicate with each other via the inner cylindrical body part 142 and the outer cylindrical body part 141, and
The configuration is such that the introduction of outside air at the time of internal negative pressure in the liquid container 2 is blocked on the upstream side (lower side in this embodiment) from the position where the vent hole 34 of the cylinder portion 31 is provided.

  In this embodiment, the liquid container 2 is composed of a soft synthetic resin bottle container, and is contracted in accordance with the internal negative pressure due to the suction and extraction of the liquid in the liquid container 2. The mouth portion is configured so that the pump means 3 can be mounted in a state of maintaining liquid tightness and air tightness.

  When the pump means 3 is screwed to the mounting portion 21 that is the mouth portion of the liquid container 2 made of a soft synthetic resin bottle body, the flange portion 141B that is the upper end portion of the seal member 140 is the liquid container 2. It is clamped between the upper end surface of the mouth part and the pump means 3.

  In the seal member 140 according to the second embodiment (part 2), the outer cylindrical body 141 and the inner cylindrical body 142 have two member configurations different from each other.

  As described above, in the second embodiment (part 1) and (part 2) described above, the liquid container 2 is not limited to the one shown in FIGS. 9 and 10, and other configurations are similar to those in the first embodiment. Can be taken. For example, the liquid container 2 is a flexible bag body, and the mounting portion 21 that can be mounted in a state in which the pump means 3 is kept liquid-tight and air-tight is attached to the opening of the bag body. Or the liquid container 2 is a cylindrical body made of synthetic resin, glass or metal, the mounting part 21 of the pump means 3 attached to the upper part of the body, and the inner peripheral surface of the body And a bottom portion that is slidably fitted in a state that maintains liquid tightness and air tightness around the entire circumference of the liquid container 2, and the bottom portion of the liquid in the liquid container 2 Examples include a configuration in which the capacity of the liquid storage portion of the liquid container 2 is reduced by moving upward in the barrel while maintaining liquid tightness and air tightness in accordance with internal negative pressure due to suction and dispensing. be able to.

  Note that the liquid container in the present invention only needs to exist in the liquid container, and is a part surrounded by the inner wall of the liquid container itself or a separate liquid container contained in the liquid container. Of course, it may be possible.

DESCRIPTION OF SYMBOLS 1 Suction-type liquid extraction pump apparatus 2 Liquid container 21 Mounting part 3 Pump means 31 Cylinder part 32 Piston part 33 Nozzle head part 34 Vent hole 35 Liquid spout 4 Seal member 41 Flange part 42 Cylindrical part 5 Case body 51 Storage body Part 52 Fixed lid part 6 Exterior case body 140 Seal member 141 Outer cylindrical body part 141A Piercing part 141B Flange part 142 Inner cylindrical body part

Claims (13)

A liquid container, and a pump unit that is attached to the liquid container and sucks and dispenses the liquid filled therein,
In the suction-type liquid dispensing pump apparatus configured such that at least the liquid storage portion contracts (shrinks) due to internal negative pressure at the time of suction / pumping of the liquid in the liquid container,
The pump means includes a cylinder part, a piston part loaded in the cylinder part, and a nozzle head part that operates the piston part, and is used for introducing outside air when the internal negative pressure of the liquid container is reduced in the cylinder part. It is a configuration with vents,
The liquid container has a mounting part for mounting the pump means,
Furthermore, when the pump means is mounted on the liquid container, the seal member having the following configuration is interposed between the pump means and the mounting portion.
A suction-type liquid dispensing pump device characterized by.
[Configuration of seal member]
An annular flange portion facing the upper surface of the entire circumference of the tip of the mounting portion, and a cylindrical portion that is suspended from the inner edge of the annular ring of the flange portion,
The inner peripheral surface of the cylindrical portion can be in close contact with the outer peripheral surface of the cylinder portion in a liquid-tight and air-tight state, and can block a vent hole provided in the cylinder portion,
And the outer peripheral surface of the said cylindrical part is the structure which can be closely_contact | adhered in a liquid-tight and airtight state to the inner peripheral surface of the said mounting part. The suction type liquid dispensing pump device according to claim 1, wherein the sealing member is made of a soft synthetic resin, a natural rubber, a synthetic rubber, or a mixture thereof. The liquid container is a bottle made of a soft synthetic resin, and is configured to contract as the internal negative pressure is generated by suction and extraction of the liquid in the liquid container, and the mouth of the bottle container The suction-type liquid dispensing pump device according to claim 1 or 2, wherein the suction-type liquid dispensing pump device is capable of being mounted while maintaining liquid tightness and air tightness. The liquid container is a flexible bag body, and a mounting portion capable of mounting the pump means in a state of maintaining liquid tightness and air tightness is attached to the opening of the bag body. The suction-type liquid dispensing pump device according to claim 1 or 2, characterized in that The liquid container is made of a synthetic resin, glass or metal cylindrical barrel, the mounting portion of the pump means attached to the upper portion of the barrel, and the entire circumference of the inner peripheral surface of the barrel. A bottle container having a liquid-tight and air-tight state and a bottom portion that is slidably fitted;
The bottom portion of the liquid container moves upward in the barrel while maintaining liquid tightness and air tightness in accordance with internal negative pressure due to suction and extraction of the liquid in the liquid container, whereby the liquid storage portion of the liquid container The suction type liquid dispensing pump device according to claim 1, wherein the capacity of the suction type liquid dispensing pump device is reduced. The suction-type liquid dispensing pump device according to any one of claims 1 to 5, wherein the pump means is screwed and attached to a mounting portion of the liquid container. A liquid container, and a pump unit that is attached to the liquid container and sucks and dispenses the liquid filled therein,
In the suction-type liquid dispensing pump apparatus configured such that at least the liquid storage portion contracts (shrinks) due to internal negative pressure at the time of suction / pumping of the liquid in the liquid container,
The pump means includes a cylinder part, a piston part loaded in the cylinder part, and a nozzle head part that operates the piston part, and is used for introducing outside air when the internal negative pressure of the liquid container is reduced in the cylinder part. It is a configuration with vents,
The liquid container has a mounting part for mounting the pump means,
Furthermore, when the pump means is mounted on the liquid container, the seal member having the following configuration is interposed between the pump means and the mounting portion.
A suction-type liquid dispensing pump device characterized by.
[Configuration of seal member]
An outer cylindrical body part into which at least a part of the liquid container is attached to the mounting part of the liquid container so that at least a part of the outer peripheral surface can be closely attached to the mounting part of the liquid container;
An inner cylindrical body portion that is fitted and attached to the outer peripheral surface of the liquid outlet at the lower end of the cylinder portion so that the inner peripheral surface can be closely attached in a liquid-tight and air-tight state,
The inner cylindrical body portion is connected to the outer cylindrical body portion in a liquid-tight / air-tight state inside the outer cylindrical body portion, so that the inner cylindrical body portion and the outer cylindrical body portion are interposed therebetween. And is configured to communicate the liquid outlet of the cylinder part and the inside of the liquid container,
In this configuration, the introduction of outside air when the internal negative pressure in the liquid container is reduced is blocked on the upstream side from the position where the vent hole of the cylinder portion is provided. The suction type liquid dispensing pump device according to claim 7 , wherein the outer cylindrical body part and the inner cylindrical body part are integrally configured. The suction-type liquid dispensing pump device according to claim 7 , wherein the outer cylindrical body part and the inner cylindrical body part are configured separately. Wherein the liquid container is a bag made of soft synthetic resin, according to claim 7 in which the upstream front end of the outer cylindrical body portion is characterized by a configurable pierceable fluid-tight and air-tight state in the bag 9. The suction-type liquid dispensing pump device according to any one of 9 above. The liquid container is a bottle made of a soft synthetic resin, and is configured to contract as the internal negative pressure is generated by suction and extraction of the liquid in the liquid container, and the mouth of the bottle container The suction-type liquid dispensing pump device according to any one of claims 7 to 9 , wherein the suction-type liquid dispensing pump device can be mounted while maintaining liquid tightness and air tightness. The liquid container is a flexible bag body, and a mounting portion capable of mounting the pump means in a state of maintaining liquid tightness and air tightness is attached to the opening of the bag body. The suction-type liquid dispensing pump device according to any one of claims 7 to 9 , wherein The liquid container is made of a synthetic resin, glass or metal cylindrical barrel, the mounting portion of the pump means attached to the upper portion of the barrel, and the entire circumference of the inner peripheral surface of the barrel. A bottle container having a liquid-tight and air-tight state and a bottom portion that is slidably fitted;
The bottom portion of the liquid container moves upward in the barrel while maintaining liquid tightness and air tightness in accordance with internal negative pressure due to suction and extraction of the liquid in the liquid container, whereby the liquid storage portion of the liquid container The suction type liquid dispensing pump device according to claim 7 , wherein the capacity of the suction type liquid dispensing pump device is reduced.

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