JPH0451744Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention has an exterior body that accommodates an inner container and a lid body, and an annular space formed between the exterior body and the inner container. The present invention relates to a liquid container equipped with an air pump that pumps out the liquid in the inner container by supplying air inside the airtight chamber located in the inner container.

[Conventional technology]

In the above-mentioned liquid container, conventionally, the airtight chamber constituting the air pump is provided by a pair of annular bellows members provided at different positions in the radial direction of the annular space, and extending between both ends of the pair of bellows members. It is known that a flat plate member having a donut shape in plan view is formed by thermally welding them together. In this device, the volume of the airtight chamber is reduced by elastically deforming the above-mentioned bellows member, and the air in this airtight chamber is supplied into the inner container. 48324
(see publication).

[Problem that the invention attempts to solve]

However, in the case of the above-mentioned conventional liquid container, both side walls of the air-tight chamber of the air pump were composed of annular bellows members, so when molding, due to the cutting die, they were not as described above. It had to be divided into four parts. Therefore, in order to form an airtight chamber from these members, as many as four heat-welded parts were required in cross-sectional view. Moreover, in order to operate the air pump reliably and pour out the liquid without using unnecessary force, it is necessary to improve the airtightness of the airtight chamber, and many of the heat welding operations must be performed carefully and reliably. As a result, the heat welding work is time-consuming.

In addition, since both side walls of the air-tight chamber of the air pump are composed of annular bellows members, in order for the air-tight chamber itself to have a certain degree of shape retention, these bellows members must be made relatively thick. Due to this, the operation of the air pump for dispensing the liquid tended to be heavy.

SUMMARY OF THE INVENTION In view of the above circumstances, an object of the present invention is to provide a liquid container whose production efficiency can be improved and whose air pump can be easily operated.

[Means for solving problems]

A characteristic configuration of the liquid container according to the present invention is that it has an exterior body that houses an inner container and a lid body, and air in an airtight chamber located in an annular space formed between the exterior body and the inner container. In a liquid container provided with an air pump that pumps out the liquid in the inner container by providing it in the inner container, the airtight chamber of the air pump is made of a flexible soft material, and
A rigid support frame for supporting the airtight chamber on the exterior body, comprising a chamber body having a smooth side wall and a U-shaped cross section, and a cover body that covers the open side of the chamber body. is formed in a shape that follows the outer surface of the chamber body, and is provided on the outside of the chamber body.

[Effect]

a In other words, since the airtight chamber is made up of two members, the heat welding parts needed to form the airtight chamber from these two members are only two in cross-sectional view, making the heat welding work easier than before. You can also do less.

(b) In addition, the airtight chamber is made of a flexible soft material, both side walls are smooth, and the overall shape is integrally molded in a U-shape,
Since there are no bellows on the sides, it can be operated without requiring strong operating force, especially in the final stage of compression.

c Moreover, since the hard support member that supports the airtight chamber is formed in a shape that follows the outer surface of the chamber body of the airtight chamber, and this hard support member also serves as a protection member for the airtight chamber, there is no damage to the chamber body itself. can be constructed without requiring almost any shape retention, and therefore there is no need to construct the chamber body with a thick member.

d Furthermore, by not requiring a bellows part on the side surface of the chamber body, it is possible to attach the chamber body in close contact with the inner surface of the rigid support member, and therefore the internal space of the chamber body can be It can be made wider relative to the overall diameter of the main body, and the chamber main body can be made smaller accordingly.

[Effect of idea]

B. Due to the effect of a above, the heat welding work that needs to be performed carefully can be reduced compared to conventional methods, making it possible to obtain a highly airtight chamber with fewer steps when manufacturing this type of liquid container. Ta.

(b) Due to the effects of b and c above, there are fewer factors that make it difficult to operate the air pump for dispensing liquid, and the pump can be operated easily with uniform force from the beginning to the end of the operation. It became.

C. Due to the effect of d above, it is possible to make the airtight chamber smaller and lighter, which is also effective in reducing the size of the entire liquid container.

〔Example〕

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

As shown in Fig. 1, a medium bottle 1 capable of containing liquid hot or cold water, a case 2 which is an exterior body into which this medium bottle 1 which is an inner container is fitted, and a case 2 which is attached to this case 2. The upper lid 3 and the like constitute a thermos flask, which is an example of a liquid container.

The medium bottle 1 is made of glass and has a double wall structure with a vacuum between the inner and outer walls. The upper part of the medium bottle 1 is narrowed to form a mouth part 1a having a smaller diameter than the maximum body diameter part.

The inner peripheral surface of the case 2 is the mouth part 1a of the medium bottle 1.
A neck portion 2a having approximately the same diameter as the mouth portion 1a is formed above the mouth portion 1a. Furthermore, this neck 2a
Above the case 2, the inner circumferential surface of the case 2 expands into a bowl shape, and a liquid injection pipe 4 in a downwardly inclined position is connected to a part of the inner circumferential surface of the case 2.

Further, an inner stopper 5 is placed on the upper edge of the neck 2a of the case 2 via a rubber gasket 6. The inner stopper 5 includes a liquid lift pipe 7 that reaches the inside of the inner bottle 1 and a liquid guide pipe 8 that reaches the liquid injection pipe 4.
and are connected. These liquid lift pipes 7 and liquid guide pipes 8
and are communicated with each other inside the inner stopper 5.

Furthermore, a liquid level indicator 9 is provided on the outer peripheral surface of the case 2.
is attached. The liquid level device 9 is made of a glass tube, and its upper part is connected to a bent pipe 11 that opens to the neck 2a of the case 2 through a tube 10 to communicate with the remaining space inside the medium bottle 1, and its lower part is connected to a connecting pipe 11. 12, it is connected to a cap 13 fitted into the opening 1b at the bottom of the medium bottle 1, communicating with the medium bottle 1. Therefore, the liquid level indicator 9 is filled with liquid to the same level as the liquid level in the medium bottle 1.

This thermos flask is provided with an air pump P for compressing the air in the medium bottle 1 and discharging the liquid in the medium bottle 1 to the outside.

Airtight chamber 1 that constitutes the main part of this air pump P
As shown in FIGS. 1 to 3, 4 is provided so as to be located in an annular shape in plan view along the circumferential direction of the middle bottle 1, which is a middle container, on the outside of the neck 2a of the case 2. It is being

As shown in FIG. 1, the airtight chamber 14 has a chamber main body 14A integrally molded with a U-shaped cross section and a smooth side wall so that high airtightness can be obtained with fewer hands and the air pump P can be operated easily. And this chamber body 1
It consists of a cover body 14B that covers the open side of 4A. Then, the chamber body 14A and the cover body 1
4B is connected in an airtight manner by ultrasonic welding.

The chamber body 14A is made of a flexible, soft material such as ethylene propylene rubber [EPM] or ethylene propylene terpolymer [EPDM]. On the other hand, the cover body 14B is made of synthetic resin and is inflexible.

An inflexible rigid support frame 15 made of synthetic resin is provided so as to surround the chamber body 14A. Further, an operating member 16 is provided between the hard support frame 15 and the chamber body 14A of the airtight chamber 14 to press and bend the chamber body 14A from below.

This operating member 16 and the chamber body 14A of the airtight chamber 14
This means that the protrusions 14a bulging from the chamber body 14A at several locations in the circumferential direction are connected to the operating member 16.
By being forcefully fitted into the engagement hole 16a, the position is fixed in the circumferential direction.

Hard support frame 15 and cover body 14B of airtight chamber 14
are connected by ultrasonic welding with the cover body 14B placed on the hard support frame 15. A flange portion extending from the rigid support frame 15 is screwed to the case 2. Thereby, the airtight chamber 14 is supported by the case 2.

As shown in FIGS. 2 and 3, two
the airtight chamber 1 via the aforementioned operating member 16.
A pair of operation parts for bending the chamber main body 14A of No. 4
A website has been set up.

To explain the structure of this operation part HP, as shown in FIG. 2, the chamber body 14A of the airtight chamber 14, the operation member 16, and the hard support frame 15 are all opened in a circular shape, and in this opening part, An operating piece 17 is provided.

One of the pair of operation parts HP shown on the right in the figure has a pressure adjustment part PC attached above. Since the structure and operation of the pair of operation parts HP are almost the same, they will be described below together with the pressure adjustment part PC.

The operation piece 17 is formed with a protrusion 17a that is engaged with the opening edge of the operation member 16 to prevent it from coming out, and a flange 17b that is positioned opposite to the lower surface of the operation member 16. The tip of one arm 18a of the bifurcated operating fork 18 is in contact with the operating piece 17 from below.

Further, the operating member 16 stands up at the opening,
Further, a bent portion 16b is formed at the rising end thereof to wrap around the opening edge of the chamber body 14A.

Furthermore, a connecting piece 19 is placed on the upper edge of the operating piece 17 . This connecting piece 19 has a pair of overhanging parts 19a, 19b, and one end of each of a pair of compression coil springs 20, 21 arranged concentrically is engaged with the pair of overhanging parts 19a, 19b. It has been stopped.

The other end of the outer compression coil spring (hereinafter referred to as a first spring) 20 is locked to an end of the inner surface of a cylindrical body 22 connected to the upper part of the airtight chamber 14 . In addition, the other end of the inner compression coil spring (hereinafter referred to as the second spring) 21 is
The second spring 2 is inserted into the hole 22a in the end surface of the cylindrical body 22.
The cap member 23 is flexible in the installation direction of the cap member 23 and is fitted onto the inner surface of the cap member 23 in a manner that prevents the cap member from coming off.

The other of the pair of operation parts HP shown on the left side in the figure is not equipped with the pressure adjustment part PC, does not have the connecting piece 19, and replaces the first spring 20 with the operation piece 17 and airtight chamber 14. Cylindrical body 2 connected to the top
A downward biasing compression coil spring (hereinafter referred to as a third spring) 24 having a length of 2A is provided.

The aforementioned operating fork 18 is shown in FIGS. 1 and 3.
As shown in the figure, the pair of arms 18a are each curved and connected to the front cover part 2A of the case 2 in which the liquid injection tube 4 is installed, and a hole is formed at the position corresponding to the liquid injection tube 4. has been done. Also, a pair of arms 18
a is pivotally supported by a pair of brackets 33 fixed to the case 2, so that the operating fork 18
is attached to the case 2 so as to be rotatable around the axis X1.

A pair of free end edges of the swing arm 25 are in contact with the upper surface of the portion 18b of the operating fork 18 that straddles the liquid injection pipe 4. A boss member 26 having an oval-shaped engagement hole 26a in cross section is connected to the base end of the swing arm 25.
6 is pivotally supported by the cover portion 2A of the case 2.

Furthermore, the engagement hole of the boss member 26 is provided with the case 2.
A shaft portion 27a of the operating lever 27 extending laterally from the cover portion 2A of the case 2 is engaged with the shaft portion 27a, and this shaft portion 27a is pivotally supported by the cover portion 2A of the case 2.

In each of Figures 1 to 3, the operating lever 2 is shown.
7 is shown not being operated. In this state, as shown in FIGS. 1 and 2, the pair of arms 18a of the operating fork 18 are both located at the lower limit of their swing range. And operation piece 1
Numeral 7 is a downward biasing force exerted by the first spring 20, so that the protrusion 17a abuts against the opening edge of the operating member 16 and presses it downward.

Therefore, at this time, the chamber body 14A of the airtight chamber 14
is not bent by the operating member 16. Also,
At this time, the second spring 21 is in a free state, and the cap member 23 is at the lower limit of its movement range and closes the airtight chamber 14.

When the operating lever 27 is swung downward from this state, the operating fork 18 is rotated counterclockwise around the axis X1 in FIG. The tips of the pair of arms 18a move upward.

As a result, the operation piece 17 moves upward against the biasing force of the first spring 20, and the flange 17b of the operation piece 17 moves upward.
the operating member 16 is pushed up. Therefore, the chamber body 14A of the airtight chamber 14 is bent, and the airtight chamber 14
is deformed and reduced.

On the other hand, as the operating piece 17 moves upward, the second spring 21 pushes up the cap member 23. Thereby, the airtight chamber 14 is opened. Therefore, as the airtight chamber 14 is deformed and reduced, the airtight chamber 14
The air inside is discharged to the outside from the opening 22a of the cylindrical body 22.

A communicating cylindrical member 28 made of an elastic body attached to the upper lid 3 is in contact with the end surface of the cylindrical body 22, with its lower edge being elastically deformed. A hat-shaped valve body 30, which is urged downward by a compression coil spring (hereinafter referred to as a fourth spring) 29, comes into contact with the upper edge of the communicating cylinder member 28 to seal the inside.

The air discharged to the outside from the airtight chamber 14 as described above is guided into the interior of the communication cylinder member 28 in an airtight state. As the cap member 23 is pushed up by the second spring 21, it comes into contact with the lower end surface of the valve body 30, and pushes up the valve body 30 against the biasing force of the fourth spring 29.

As a result, the inside of the communication cylinder member 28 is connected to the upper lid 3.
The airtight chamber 1 is connected to an air flow path 31 formed in the
Air from 4 is guided to this air flow path 31.
This air flow path 31 communicates with the air flow path within the inner stopper 5 via a bushing member 32 made of an elastic body attached to the upper edge 3. Furthermore, this air flow path communicates with the remaining space inside the medium bottle 1.

Therefore, the air discharged from the airtight chamber 14 is guided into the inner bottle 1, increasing the pressure in the remaining space. As a result, the liquid level in the medium bottle 1 is pushed down, and the liquid in the medium bottle 1 is forced to flow through the water lift pipe 7 and water guide pipe 8 to reach the liquid injection pipe 4, and from the tip of this liquid injection pipe 4 to the outside. It is poured out.

On the other hand, if the swinging operation of the operation lever 27 is stopped, the operation piece 17 is pushed down together with the connecting piece 19 by the biasing force of the first spring 20, as shown in FIG. As a result, the cap member 23 is no longer pushed up by the second spring 21, so the urging force of the fourth spring 29 is applied to the valve body 3.
0 is pushed down, and the communication cylinder member 28 and the air flow path 3
1 is cut off. Also, the second spring 2
1 returns to the free state, and the hole 22a of the cylindrical body 22 is closed by the cap member 23.

When the operating piece 17 is pushed down, the operating member 16 is locked to the protrusion 17a.
move downward, and along with this, the chamber body 14A of the airtight chamber 14, which is caught and locked by the bent portion 16b of the operating member 16, no longer bends. With the above steps, the operation section HP and the pressure adjustment section PC return to the initial states shown in FIGS. 1 to 3.

At this time, the operating fork 18 has its arm 18a
Since the operation piece 17 pressed down by the biasing force of the first spring 20 is in contact with the tip of the handle, it is biased clockwise in FIG. 1 and rotates. Accordingly, the swinging arm 25 in contact with the operating fork 18 is also rotated clockwise, and the operating lever 27 is lifted. From then on, the operating lever 27
is held at the upper limit of the operating range by the biasing force of the first spring 20.

On the other hand, as shown in FIG. 1, the upper cover 3 is pivotally connected to a bracket 2b extending from the case 2 at its rear end portion by a pin 34, and can be opened and closed with respect to the case 2 by rotating in an arc. It is freely configured.

A torsion coil spring (hereinafter referred to as a fifth spring) 35 is wound around this pin 34. This fifth spring 35 has one end fitted into and locked in a small hole 2c formed in the case 2, and the other end abutting the lower surface of the upper member 3A of the upper lid 3, and urges the upper lid 3 toward the open side. ing. That is, the fifth spring 35 serves as a biasing mechanism SM.

Further, the upper lid 3 is configured to be fixed in position by a locking mechanism RM in its closed position. To explain the configuration of this locking mechanism RM,
As shown in FIG. 1, an engaging protrusion 3 is attached to the front end of the lower member 3B screwed to the upper member 3A of the upper lid 3.
a, and has a locking protrusion 36a that locks and locks the engaging protrusion 3a.
6 is rotatably attached to a bracket 37 fixed to the liquid injection tube 4.

This locking member 36 has a torsion coil spring (hereinafter referred to as the sixth spring) 38, so that the locking protrusion 36a is fixed to the engagement protrusion 3a of the upper lid 3.
is biased in the direction of locking. Also, a part of this locking member 36 is raised outward to form a bulging portion 36.
b, and this bulging portion 36b faces the outside through a hole 2d bored in the cover portion 2A of the case 2.

The bulging portion 36b of the lock member 36 serves as a lock release mechanism RR that releases the lock of the top lid 3 by the lock mechanism RM described above.

That is, by pressing the bulging portion 36b of the locking member 36 with a finger or the like, the locking member 36
The shaft center X resists the urging force of the sixth spring 38.
Rotates counterclockwise in the figure around 2. As a result, the locking projection 36a of the locking member 36 disengages the engagement projection 3a of the upper lid 3, and the locking of the upper lid 3 is released.

As already mentioned, the upper lid 3 is biased toward the open side by the fifth spring 35, and as described above, the unlocked upper lid 3 rotates in an arc due to the biasing force of the fifth spring 35. As shown in FIG. 4, it is lifted out of the closed position and maintained in that position. In this state, the lock mechanism
The upper lid 3 will not be locked again by RM.

Therefore, the upper lid 3 can be opened to the open position by continuously pressing the bulging portion 36b of the locking member 36. That is, the top cover 3 can be unlocked and opened with one hand.

The upper lid 3 can be opened to the open position by holding the edge 3b formed by the front end of the upper member 3A protruding beyond the front end of the lower member 3B. Note that if the biasing force of the fifth spring 35 is made strong, the top cover 3
It is also possible to rotate the opening position to the open position all at once.

To relock the top lid 3, the top lid 3 is pressed downward from the state shown in Fig. 4. That is, the back of the engaging projection 3a of the top lid 3 comes into contact with the locking projection 36a of the locking member 36, causing the locking member 36 to rotate counterclockwise in the figure around the axis X2 against the biasing force of the sixth spring 38. Then, when the engaging projection 3a overcomes the locking projection 36a, the locking member 36 rotates clockwise in the figure around the axis X2 due to the biasing force of the sixth spring 38, and the top lid 3 is locked again and maintained in that position.

[Another example]

Next, another example of the air pump P will be listed.

<1> The shape of the airtight chamber 14 in plan view can be changed as appropriate, and may be any shape as long as it is located in an arc shape along the circumferential direction of the inner container 1. For example, as shown in FIG. 5A, it may be C-shaped, or it may be divided into two in the circumferential direction, as shown in FIG. 5B.

When the airtight chamber 14 is formed into a C-shaped airtight chamber 14 as shown in FIG. 5A, there is ample space inside the cover 2A of the case 2, as shown in FIG.

<2> In the embodiment shown in FIG. 7, the connection between the chamber body 14A and the cover body 14B of the airtight chamber 14 and the hard support frame 15 is replaced by the ultrasonic welding described in the previous embodiment, and the cover body 14B is flange 14
b and the flange 15a of the rigid support frame 15, with the edge of the chamber body 14A held between the protrusion 14c of the cover body 14B and the flange 15a of the rigid support frame 15.
This is done by locking the 5b so as to wrap it around the periphery.

Furthermore, the chamber body 14A and the operating member 16 are fixed in the circumferential direction by fitting circular protrusions 16b formed on the operating member 16 into the holes 14d of the chamber body 14A at multiple locations in the circumferential direction. be.

<3> The embodiment shown in FIG. 8 is a partial modification of the embodiment shown in FIG.
By locking the protrusion 15b of 5, the chamber body 14
A and the cover body 14B and the hard support frame 15 are connected.

<4> The embodiment shown in FIG. 9 is a partially modified embodiment of the embodiment shown in FIG.
Upper member 1 locked by protrusion 14C of 4B
5A and the lower member 1 screwed to the case 2
This configuration is divided into 5B.

<5> In the embodiment shown in FIG. 10, an air channel 39 is provided inside the case 2 in place of the air channel 31 provided in the upper lid 3 in the previous embodiment.
One end of this air passage 39 is communicated with the inside of the cylindrical body 22 connected to the airtight chamber 14 via the cap member 23, and the other end is opened to the neck 2a of the case 2.

<6> In the embodiment shown in FIG. 11, a connecting piece 40 is interposed between the cap member 23 and the second spring 21.

Note that although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of the drawing]

The drawings show an embodiment of the liquid container according to the present invention, in which FIG. 1 is a longitudinal cross-sectional view, FIG. 2 is a cross-sectional view taken along the - line in FIG. 1, and FIG.
4 is a vertical sectional view with the top lid open, FIGS. 5A and 5B are plan views showing other embodiments of the airtight chamber, and FIG. 6 is the embodiment shown in FIG. 5A. FIGS. 7 to 9 are sectional views showing further embodiments of the airtight chamber, and FIGS. 10 and 11 are sectional views showing other embodiments of the air pump. be. 1... Inner container, 2... Exterior body, 3... Lid body, 1
4... Airtight chamber, 14A... Chamber body, 14B... Cover body, 15... Hard support frame, P... Air pump.

Claims (1)

[Claims for Utility Model Registration] An airtight chamber that has an exterior body 2 that accommodates an inner container 1 and a lid body 3, and is located in an annular space formed between the exterior body 2 and the inner container 1. In a liquid container provided with an air pump P that pumps out the liquid in the inner container 1 by supplying air in the inner container 1 to the inner container 1, the airtight chamber 14 of the air pump P is made of a flexible material. The chamber body 14A is made of a soft material having a smooth side wall and has a U-shaped cross section, and the cover body 14B covers the open side of the chamber body 14A. A liquid container in which a hard support frame 15 for supporting the liquid container 14 on the exterior body 2 is formed in a shape along the outer surface of the chamber body 14A, and is provided on the outside of the chamber body 14A.