JPH0151252B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention comprises a main body and an openable and closable upper lid, and a liquid container having a mouth portion smaller in diameter than the maximum body diameter is provided in the main body, and the liquid in the liquid container is This invention relates to a liquid storage container equipped with an air pump for discharging liquid out of the main body.

Various types of thermos flasks, which are an example of this type of liquid container, have been known for a long time.
It had the structure described in the following [] and [].

[] The air pump is disposed at a position higher than the opening height of the liquid container.

[] An air supply passage from the air pump to the liquid container is formed in the main body so as to lead out from a position corresponding to a lower part of the pump chamber of the air pump.

In such conventional vacuum bottles, the air pump is located in a position that protrudes far above the mouth of the liquid container, which not only causes the center of gravity to be high, resulting in poor stability, but also makes the bottle bulky. easy. Especially,
If the operating tool for the air pump is provided on the top of the air pump, there is an inconvenience that it becomes difficult to operate the pump. Moreover, if outside water or other objects enter the pump chamber of the air pump,
This has the disadvantage that it tends to flow into the liquid container through the air supply passage.

Apart from the above-mentioned conventional technology, if you only want to lead the air supply passage from the upper part of the pump chamber, for example, as shown in Japanese Utility Model Application Publication No. 50-9875, it is possible to connect air below the bottom of the liquid container. There is also a method of arranging the pump and extending the air passage led out from the upper part of the pump chamber so that it passes between the outer peripheral side of the liquid container and the inner surface of the case and reaches the mouth. Even if the possibility of sending liquid into the liquid container is reduced, there is still the disadvantage that the liquid container, which becomes heavy when filled with liquid, is located higher, and its center of gravity becomes higher, resulting in even worse stability.

Furthermore, in addition to the above-mentioned thermos bottles, also in atomizers in which the mouth of the liquid container is configured to have a smaller diameter than the maximum body diameter, the container mouth of the suction pipe in the vertical direction passing through the mouth of the container is It seems to have been common sense that the pump device should be provided in an upper position that projects upward from the pump in order to reduce the bulk of the pump device as a whole including the suction pipe.

The present invention has an object to overcome the above-mentioned conventional drawbacks by improving the rational arrangement of the components.

The characteristic configuration of the liquid storage container with an air pump according to the present invention, which was taken to achieve the above object, is as follows:
It comprises a main body and a top cover that can be opened and closed, and inside the main body,
In a liquid storage container with an air pump, the liquid container is provided with a liquid container having a diameter smaller than the maximum diameter of the liquid container, and an air pump is provided for pouring out the liquid in the liquid container to the outside of the main body. The air pump is positioned largely within a space formed between the main body and the case forming the body, and an air supply passage into the liquid container is formed within the space formed in the upper lid; The pump passage of the air pump is communicated with the air supply passage when the upper cover is in the closed position, and the pump passage is opened from the air supply passage when the upper cover is in the open position.

The effects of the above characteristic configuration are as follows.

In other words, when considering the shape of the liquid container,
If the opening area of the container is equal to the maximum body diameter of the entire container, the sealing lid will also be large, making handling the whole thing inconvenient.In addition, when insulating the inside and outside of the container, It may be advantageous to make the mouth of the container as small as possible to reduce heat exchange through the stopper attached to the mouth.
Furthermore, if the mouth of the container is high in the vertical direction, the length of the contact surface between the stopper and the container in the internal and external directions may be increased to improve the sealing performance, or if the mouth part of the container is insulated, it may be necessary to It has the advantage of suppressing heat exchange.

The present invention focuses on the unique shape of the mouth of the container, which is adopted in order to solve the above-mentioned disadvantages of containers with a wide mouth area or to satisfy the required functions. By utilizing the space that exists, that is, the relatively large shoulder space that exists between the outer circumferential surface of the container near the mouth and the inner circumferential surface of the case, the air pump is placed in a large space, compared to conventional methods. Not only can it be constructed with a low bulk, but also the center of gravity can be lowered to improve stability. Moreover, the air supply passage from the air pump into the liquid container communicates with the pump passage of the air pump when the upper lid is in the closed position, and the air supply passage from the air pump to the liquid container is communicated with the pump passage of the air pump through the thick inside of the upper lid. Since the top cover is formed in such a way that air is drawn out to the side, even if the thickness of the top cover is increased to improve the insulation performance on the mouth side of the liquid container, the inside of the thick top cover cannot be used for arranging the air supply passage. By making effective use of the installation space, it is easy to construct the entire liquid storage container with a low volume. Furthermore, the air supply passage formed in the top lid may leak the air supplied from the air pump if the top lid is not properly closed, and may also serve as a means of checking whether the top lid is completely closed. This is effective in preventing dangers such as hot water spilling out if the top lid falls down without being properly closed. Furthermore, even if water or other substances from the outside enter the pump chamber, it is possible to prevent these from flowing into the liquid container through the air supply passage, resulting in sanitary use.

Embodiments of the present invention will be described below based on the drawings.

As shown in FIGS. 1 to 3, a container main body 2a is placed in an internal space formed by a main body A having a liquid injection pipe 1 in a downwardly inclined position and a top lid B that can be opened and closed by swinging.
A vacuum glass liquid container (hereinafter referred to as a medium bottle) 2 having a mouth 2b having a diameter smaller than the maximum body diameter of the container body 2a connected to the upper part of the container body 2a, and this medium bottle 2.
an inner stopper unit C comprising a first water conduit 4 for guiding the liquid in the inner bottle to the inner stopper 3 and a second water conduit 5 for guiding the liquid from the inner stopper 3 to the liquid filling pipe 1, and the inner bottle 2; The main part of a manual bellows pump (an example of an air pump) P that pumps air into the inner bottle 2 to send the liquid inside the inner bottle 2 out of the main body A through the inner stopper unit C and the liquid injection pipe 1. are arranged to form a thermos flask, which is an example of a liquid storage container with an air pump.

The main body A includes a lower opening member 6 that includes a through hole 6a for inserting and holding the liquid injection tube 1 so that it can be pulled out only upwardly, and an annular recess 6b that opens downward.
and a cylindrical case 7 which is elastically fitted and fixed to the lower mouth member 6, in other words, forcefully fitted, and the outer peripheral surface of the case 7 is provided with the above-mentioned note. A cover 8 which covers the outer circumference of the liquid tube 1 and has a substantially triangular shape when viewed from the side is attached with screws 9.

The upper lid B includes an outer cover 11 that is vertically swingable around a horizontal pin 10 with respect to the lower opening member 6, and an inner cover 13 that is fitted and held on the outer cover 11 with an appropriate space formed therein. Furthermore, between the two covers 11 and 13, the lower opening member 6 is provided.
A locking member 14 that can be freely engaged with the locked piece 6c from above and that can be engaged and disengaged horizontally or approximately horizontally, and a coil spring 15 that urges the locking member 14 to move in the engaging direction. It is configured by providing.

The bellows pump P is constructed as follows.

In the annular recess 6b of the lower mouth member 6, there is a donut-shaped elastic bellows 16 forming the pump chamber 12, and an annular support member 17 whose upper and lower sides are respectively attached in an airtight manner by ultrasonic welding means.
A bellows cover 19 having a substantially U-shaped cross section and containing a bellows cover 18 is screwed and fixed thereto, and an elastic cylindrical body that also serves as a gasket is fitted to the lower opening member 6 at one location in the circumferential direction of the upper support member 17. A cylindrical body 17a is inserted and held from below into the lower support member 18, and two through holes formed at these positions are opened and closed at two positions displaced by 180 degrees in the circumferential direction of the lower support member 18. A hook valve 22, which is freely movable and biased to an open state via a coil spring 21, is inserted and locked.

Further, the pair of hook valves 22, 2 are attached to a bracket 23 connected to the bellows cover 19.
2 and a lower support member 18, a Y-shaped operating rod 24 for contracting the bellows 16 is pivotally mounted to be able to swing up and down, and between the liquid injection pipe 1 and the triangular cover 8. , a lever 2 that projects outward through a projection 25a that can push down the other end of the operating rod 24 and an opening 8a cut out in the triangular cover 8;
5b is attached so as to be vertically movable. The inner cover 13 of the upper lid B is elastically pressed against the upper surface of the inner plug 3 in communication with the upper part of the air flow path 26 formed in the inner plug 3 when the upper lid B is closed. An L-shaped first supply pipe 27 made of an elastic material that also serves as a gasket, and this first supply pipe 2
7, and is in pressure contact with the upper end of the elastic cylindrical body 20 in a state where it communicates with the elastic cylindrical body 20 when the upper lid B is closed.
A supply pipe 28 is provided.

The triangular cover 8 has a lock state and an operation that project into the movement path of the operating member 25 by sliding in the lateral direction and contact and prevent the operating member 25 from moving to the liquid pouring operation position. Member 25
A lock operating tool 29 is attached which can be freely switched from the moving path to the unlocked state in which the lock is retired.

A bellows 16, a bellows cover 19, a lower support member 18, a hook valve 22, and an operating rod 24 constitute the main parts of such a bellows pump P.
is largely inserted into a space 30 formed between the outer circumferential surface of the medium bottle 2 from the mouth 2b to the shoulder and the inner circumferential surface of the case 7.

In this way, by utilizing the relatively large annular shoulder space 30 that exists outside the mouth of the inner bottle 2 and arranging the main part of the bellows pump P, it is possible to achieve stability, which is an important element for a thermos bottle. This allows the overall structure to be made as low in bulk as possible while improving performance.

Furthermore, the second supply pipe 28, the first supply pipe 27,
An air supply passage D from the bellows pump P to the inner bottle 2, which is configured with an air flow path 26 of the inner stopper 3, is formed by using a space in the upper lid B located above the bellows pump P, In addition, when the upper lid B is in the closed position, the pump passage 12 formed inside the upper lid B is
a, and is configured such that the connection with the pump passage 12a is opened by operating the upper lid B to the open position.

With this configuration, the air supply passage D is connected to the case 7.
It is possible to avoid damage caused by contact with other objects that occurs when the air supply passage D is formed through the outside, or disadvantages in terms of manufacturing such as when the air supply passage D is formed through the mouth part 2b of the medium bottle 2. In addition, even if water or other substances from the outside enter into the pump chamber 12, it is possible to effectively prevent this from flowing into the medium bottle 2 through the air supply passage D.

When pouring out the stored liquid from the thermos configured in this manner, when the lever 25b is pressed down with a fingertip, the operating rod 24 swings up and down in conjunction with this, and the hook valve 22 is closed. The bellows 16 is compressed. This bellows 1
The air pressurized by 6 is discharged into the medium bottle 2 through the air supply passage D, and pressurizes the liquid level of the stored liquid. As a result, the stored liquid is poured out of the case 7 via the inner stopper unit C and the liquid injection pipe 1.

Furthermore, when the pushing force of the lever 25b is released, the bellows 16, hook valve 22, operating rod 24, and operating member 25 are automatically returned to their original positions by the energy stored in the coil spring 21.

The hook valve 22 is in a normally open state, and by letting the steam inside the medium bottle 2 escape to the outside through the air supply passage D, the liquid filling pipe for the stored liquid due to the rise in vapor pressure within the medium bottle 2 is removed. This makes it possible to prevent unexpected pouring from 1.

Furthermore, the bellows cover 19 allows the medium bottle 2 to
Damage to the bellows 16 due to fragments at the time of breakage can be prevented. Also, this bellows cover 19
By screwing and fixing the upper support member 17 to the lower opening member 6, the upper support member 17 can be simultaneously tightened and fixed between the two members 19 and 16.

The bellows 16 is composed of a pair of bellows-like membrane bodies 16a and 16b located inside and outside with appropriate spacing.

In addition, since a part of the air supply passage D is configured using the internal space of the top cover B, it is possible to open a part of the air supply passage D to the outside when the top cover B is opened, so that cleaning, inspection, etc. This allows for easy maintenance.

In the above-mentioned embodiment, the cylindrical body 17a of the upper support member 17 is displaced 90 degrees in the circumferential direction with respect to the hook valves 22, 22, and the liquid injection pipe 1
However, as shown in Fig. 4, it may be installed at a position corresponding to the upper part of one of the hook valves 22, or it may be installed at a position other than this. Also good.

Further, in the above embodiment, the bellows pump P
As shown in FIG. A type that can be operated manually may also be used. The operating system of this top-actuated bellows pump P has a coil spring 3 attached to the upper lid B, which is movable up and down within a certain range.
1, and the operating tool 32 is switched between a lock state that prevents the operating tool 32 from being pushed into the liquid pouring operation position and a unlocked state that allows the operating tool 32 to be pushed into the liquid pouring operation position. A flexible lock operating tool 33 is provided, and the operating tool 32
Interlocking pieces 34 and 35 are arranged in series between the upper support member 17 and the upper support member 17, and contact each other from above and below.

In the case of this embodiment, a bellows tube 37 is connected to communicate between the air supply port of the upper support member 17 and the gasket 36 fitted into the through hole of the lower mouth member 6.

The structure of the air supply passage D is as follows: [] A first type that extends from the bellows pump P to the inner bottle 2 via the lower mouth member 6, the upper lid B, and the inner stopper 3.

[] A second type that extends from the bellows pump P to the medium bottle 2 via the lower mouth member 6 and the upper lid B.

An example of their specific structure will be explained next.

<First type> (a) As shown in FIG. 6, the upper support member 17
and an annular holding member 61 that holds the lower support member 18 vertically movably are fastened together to the lower mouth member 6 via screws 62. Note that the configuration regarding the ventilation passage D is the same as the embodiment shown in FIGS. 1 to 3.

In this embodiment, an upper support member 17 and an annular holding member 61 for the lower mouth member 6
Not only can the installation of the bellows 16 be easily done, but also the bellows 16 can be easily removed by debris when the inner bottle 2 is broken.
It has the advantage of preventing damage to the

(b) As shown in FIG. 7, a cylindrical check valve 64 that can freely open and close the supply cylinder-shaped portion 63 of the upper support member 17;
Both openings of the cylindrical portion 18a of the lower support member 18 are threadedly connected to a cylindrical hook valve 66 provided with flanges 66a and 66b that can be opened and closed, respectively, and the check valve 64 and the lower mouth member 6 are connected by screwing. , the reversal valve 64
A coil spring 67 is interposed to bias the hook valve 66 in the closing direction, and a portion of the hook valve 66 that corresponds to the cylindrical portion 18a of the lower support member 18 when the hook valve 66 is closed is provided with an outer circumferential surface of the hook valve 66. A hole 68 is formed through a gap between the inner peripheral surface of the cylindrical portion 18a and the inside of the hook valve 66 to communicate with the outside air.

According to this embodiment, while the steam in the medium bottle 2 can be smoothly discharged to the outside air via the check valve 64 and the hook valve 66, the steam can be prevented from entering the pump chamber 12. from,
This has the advantage of preventing the generation of germs and improving durability.

(C) As shown in FIG. 8, the check valve 70, which can freely open and close the feed cylinder-shaped body 17a of the upper support member 17, is screwed and fixed to the lower support member 18.

In this embodiment, the check valve 70 is also used as a lowering stopper for the lower support member 18, so the number of parts can be reduced due to the use of the check valve 70, which facilitates the simplification of the structure and the ease of assembly. There are advantages to being able to do so.

(d) As shown in FIGS. 9 and 10 A and B, when the upper lid B is closed, the cylindrical body 71 connected to the inner cover 13 of the lower opening member 6 A gasket 72 is fitted in a pressure-contact state, and a valve leaflet 72 having radial cuts in a plan view is provided on the upper part of the gasket 72.
a, so that when the top cover B is opened, the air supply passage D is closed by the valve membrane 72a in a free state, and when the top cover B is closed, the cylindrical body 71 According to the valve leaflet 72a
The structure is such that the air supply passage D is opened by pushing out the air supply passage D.

In this embodiment, when the top cover B is opened, the pump chamber 12 is moved through the gasket 72.
It has the advantage of being able to prevent liquids and other substances from entering the interior.

(E) As shown in FIG. 11, an elastic cylindrical body 2 fitted to the inner cover 13 of the upper lid B and the lower opening member 6
Communication hole 73 for 0 and air flow path 2 of inner plug 3
6, and a communication hole 73 is provided on the upper surface of the inner cover 13.
A passage 7 for communicating and connecting the and packing 74
The plate-shaped member 76 forming the part 5 is fixed by ultrasonic welding means or the like.

In this embodiment, the inner cover 1
There is an advantage that the passage 75 can be easily manufactured by using 3.

(f) As shown in FIG. 12, on the inner cover 13 of the top lid B, there are a gasket 74 for connecting the air flow path 26 of the inner stopper 3, a gasket 79 for connecting the suction pipe portion 78 of the lower mouth member 6, and these. An L-shaped pipe 80 to be connected is provided across both packings 74 and 79, and the L-shaped pipe 80
An opening 80a is formed at the corner of the opening 80a.
An intake valve 81 which can be opened and closed and is biased in the opening direction is attached to the L-shaped pipe 80 via a bag nut 82.

In addition, 83 in the figure is a check valve.

This embodiment has the advantage that the steam in the medium bottle 2 can be prevented from entering the pump chamber 12 by providing the intake valve 81 and the check valve 83.

In addition, the second type is the above-mentioned first type, but without passing through the air flow path D of the inner stopper 3,
The inner bottle 2 is inserted through the gap between the inner stopper 3 and the lower mouth member 6.
It is configured to pump air into the interior.

Next, an example related to water amount display will be described.

(a) As shown in FIG. 13, the bottom of the medium bottle 2 and the water guide pipe 84 in a horizontal position, this water pipe 84 and the glass water volume display tube 85 in a vertical position, and the water volume display pipe 85 and the lower mouth member 6 and are connected through cylindrical packings 86, respectively.

In addition, 87 in the figure is a water amount display window.

In this embodiment, since the tubes 84, 85 and the packing 86 are combined, there is an advantage that assembly can be facilitated.

(b) As shown in FIG. 14, the upper lid B is provided with a T-shaped connecting gasket 88, which is one of the constituent members of the intake passage D. The water amount display tube 85
An L-shaped pipe 89 that communicates with the upper connection gasket 86 under pressure is inserted and held therein.

According to this embodiment, one packing 8
6 to hold the water quantity display tube 85 and the L-shaped tube 8
9, the structure can be simplified by reducing the number of parts due to this dual use.

(c) As shown in FIG. 15, a connecting gasket 86 that fits and holds the upper part of the water quantity display tube 85 is integrally connected to the elastic cylindrical body 20 fitted to the lower opening member 6 in an inclined position. do.

In the case of this embodiment, the elastic cylindrical body 20 for forming the air supply passage D and the gasket 86 for holding the water quantity display tube 85 can be handled as one, so assembly is facilitated. It has the advantage of being able to achieve

<Other Examples> [] The shape of the bellows 16 includes a bellows shape, a bellows shape, etc.
Instead of having a series of donut shapes in a plan view, it may be divided into a plurality of parts in a plan view, such as a horseshoe shape, or a plurality of small cylindrical bellows may be used. In short, there are various shapes of the bellows 16, and the bellows 16 should be appropriately selected depending on the conditions of use and the like.

[] As the hook valve and check valve, one other than the above-mentioned embodiments is used.

[] This proposal applies to liquid containers with air pumps other than thermos flasks.

[] An electric pump using an actuator such as an electric motor may be used as the air pump P. Further, this type of air pump P includes a reciprocating pump, a rotary pump, etc. Further, as the reciprocating pump, in addition to the above-mentioned bellows pump, there are a piston pump, a plunger pump, etc.

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of drawings]

1 to 3 show an embodiment of a liquid storage container with an air pump according to the present invention, in which FIG. 1 is a partially cutaway side view, FIG.
The figure is a sectional view taken along the line -- in FIG. 1. 4 to 9 and 11 to 15 are sectional views showing different embodiments, and FIGS. 10A and 10B are enlarged sectional views of the main parts of FIG. 9. 2...liquid container, 2a...container body, 2b...
Mouth part, 3... Middle plug, 6... Lower mouth member, 7... Case, 12... Pump chamber, 12a... Pump passage,
16... bellows, 17, 18... member, 30...
...Space, A...Body.

Claims (1)

[Claims] 1. A liquid container 2 comprising a main body A and a top lid B that can be opened and closed, and a liquid container 2 having a mouth portion 2b having a smaller diameter than the maximum body diameter is provided in the main body A. In a liquid storage container with an air pump provided with an air pump P for pouring liquid out of the main body A, a case 7 forming the mouth 2b of the container 2 and the body of the main body A.
The air pump P is positioned largely in the space 30 formed between the upper lid B and the air supply passage D into the liquid container 2 is formed in the space formed in the upper lid B. An air pump configured by communicating the pump passage 12a of the air pump P with the air supply passage D when the air pump P is in the closed position, and opening the pump passage 12a from the air supply passage D when the upper cover B is in the open position. Liquid storage container with pump. 2. The liquid storage container with an air pump according to claim 1, wherein the liquid storage container 2 is a vacuum glass medium bottle of a thermos flask. 3. The liquid storage container with an air pump according to claim 1 or 2, wherein the air pump P is a manual type. 4. The liquid storage container with an air pump according to claim 1 or 2, wherein the air pump P is electric. 5. The liquid storage container with an air pump according to any one of claims 1 to 4, wherein the air pump P is a reciprocating pump. 6. The liquid storage container with an air pump according to any one of claims 1 to 4, wherein the air pump P is a rotary pump. 7. The liquid storage container with an air pump according to claim 5, wherein the reciprocating pump P is a bellows pump. 8. A patent claim in which the air supply passage D passes through the lower mouth member 6 and is formed between the inner peripheral surface of the mouth portion 2b of the liquid container 2 and the outer peripheral surface of the inner plug 3 attached thereto. A liquid storage container with an air pump according to items 2 to 7. 9. According to claims 2 to 7, the air supply passage D is formed by penetrating the lower mouth member 6 and the inner stopper 3 attached to the mouth portion 2b of the liquid container 2, respectively. Liquid storage container with air pump as described.