JPH0337927B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a container body in which a mouth portion having a smaller diameter than the maximum body diameter portion of the container body is connected to the container body at a position above the maximum body diameter portion. , a liquid container having a shoulder extending from the maximum body diameter to the mouth; a case that covers the outer circumferential surface of the liquid container; and an annular ring extending between the mouth and the case. a lower mouth member;
A stopper attached to the mouth, a swingable upper lid that covers the upper surface of the lower mouth member, a shoulder of the liquid container, an inner circumferential surface of the case, and a lower surface of the lower mouth member. a bellows pump having an elastic bellows mounted in a position positioned within a surrounding annular space and an air discharge port opening on an upper surface of the lower mouth member;
The present invention relates to a liquid storage container with an air pump equipped with a manual operating tool that vertically expands and contracts the elastic bellows from the lower surface side.

[Conventional technology]

In the above-mentioned liquid storage container with an air pump, the elastic bellows of the manually operated bellows pump, which requires a large installation space, is surrounded by the shoulder of the liquid container, the inner peripheral surface of the case, and the lower surface of the lower mouth member. By effectively utilizing the annular space, it can be installed compactly within the annular space, and because the manual operation tool for vertically expanding and contracting the elastic bellows can be installed at a relatively low position on the case side, the lower opening can be installed in a compact manner. A liquid storage container (for example, a liquid storage container equipped with a bellows pump and its manual operation tool) is attached to the upper lid that covers the upper surface of the member.
No. 50-29363, No. 145067, No. 124262, No. 39030,
(Refer to Japanese Utility Model Application Publication No. 181380/1980, Publication No. 3160/1988, and Publication No. 63655/1989), or by installing an annular bellows pump between the lower mouth member and the upper cover.
A liquid storage container equipped with a manual operation device operated from the top of the bellows pump (for example,
(Refer to Publication No.), the entire liquid storage container can be made smaller in proportion to the amount of liquid it can hold, and it also has the advantage that a large overturning moment is less likely to occur when operating the manual operation tool, and the lower part of the liquid container A liquid storage container equipped with a bellows pump (e.g., 1980-
Even when compared with JP 98371), the center of gravity of the entire liquid storage container is lower, which makes it difficult to generate a large overturning moment, and there is an advantage that the entire container can be made smaller.

However, the conventional liquid storage container with an air pump mentioned above has an air flow path formed in the stopper and an air flow path opened on the upper surface of the lower opening member, as described in, for example, Japanese Utility Model Application Publication No. 13263/1983. A cylindrical air supply passage that communicated with the discharge port was provided protruding from the plug body.

[Problem that the invention seeks to solve]

For this reason, air cannot be sent into the container efficiently unless the stopper is attached to the air outlet in an accurate position, and the disadvantage is that it takes time and effort to attach the stopper, making it complicated to handle. In addition, when the liquid storage container falls over or when the stopper is removed and liquid is injected into the container, the liquid tends to enter the elastic bellows from the air outlet. Due to the structure in which the elastic bellows is installed within the annular space, once the liquid has entered the elastic bellows, it is difficult to drain it out, which causes early malfunction of the bellows pump.

Furthermore, in order to suppress as much as possible the inhalation of liquid and foreign matter into the elastic bellows, if a valve for supplying air to the elastic bellows is provided in the annular space at the shoulder of the container, liquids and foreign matter may enter the elastic bellows from the container outlet. Liquid leaks from the air supply valve between the liquid container and the case, causing early corrosion of the case.

In addition to these drawbacks, as for the problem that it takes time and effort to attach the stopper, for example, as described in the above-mentioned Japanese Utility Model Publication No. 50-6458 and Japanese Utility Model Application Publication No. 50-98371, the lower opening member is attached to the container. An air supply passage is formed in the lower mouth member, and the air discharge port of the bellows pump is directly connected to this air supply passage to supply air to the liquid container without going through a stopper. However, in this case, when the liquid container falls over or is moved, the stored liquid will easily enter the elastic bellows, and it will be difficult to clean the inside of the air supply passage. As the diameter of the container increases, a new problem arises in that the annular space in the shoulder of the container becomes narrower, making it impossible to mount a large-capacity bellows pump.

The present invention has been made in view of the above circumstances, and provides a liquid storage container with an air pump that is easy to handle and has excellent durability by devising the connection structure of the air discharge port. The purpose is to

[Means for solving problems]

The characteristic structure of the present invention for achieving the above object is as follows:
In the above-mentioned liquid storage container with an air pump, when the top lid is closed, an air supply passage is provided in the top lid, which communicates and connects the air outlet into the liquid container via an air flow path formed in a stopper. Along with forming;
A valve mechanism is provided that closes the air discharge port when the manual operation tool is not operated, and a valve is installed that supplies air in the annular space into the elastic bellows as the elastic bellows expands. This configuration provides the following effects.

[Effect]

(a) When the upper lid is closed, the air outlet opening on the upper surface of the lower mouth member is connected to the inside of the liquid container via the air supply passage formed in the upper lid and the air passage formed in the stopper.

(b) When the manual operating tool is not operated, liquid will not enter the elastic bellows from the air outlet.

(c) Although an air supply valve is provided in the annular space of the container shoulder to prevent liquid and foreign matter from being sucked into the elastic bellows, the above (b) prevents liquid from entering the case. No leakage.

〔Effect of the invention〕

According to (a) above, the air discharge port can be reliably connected to the inside of the liquid container with a simple operation.

Due to the above (b), malfunction of the bellows pump is less likely to occur.

Due to the above (c), the case is less likely to corrode early,
Can be used for a long time.

Therefore, it has become possible to provide a liquid storage container with an air pump that is easy to handle and has excellent durability.

〔Example〕

Next, embodiments of the present invention will be described based on the drawings.

As shown in FIGS. 1 to 3, the largest body of the container body 2a is located in the internal space formed by the case body A equipped with the liquid injection pipe 1 in a downwardly inclined position and the upper 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 portion 2b with a smaller diameter than the diameter portion connected to the upper part of the container body 2a, and a liquid inside the medium bottle 2 are connected to an inner stopper. 3, and a second water conduit 5 that guides the liquid from the inner stopper 3 to the liquid injection pipe 1; This is an example of a liquid storage container with an air pump, in which a main part of a manual bellows pump P that sends the liquid in the inner stopper 2 out of the case body A through the inner stopper unit C and the liquid injection pipe 1 is provided. It consists of a thermos flask.

The case body A has a through hole 6a for inserting and holding the liquid injection tube 1 so that the liquid injection tube 1 can be extracted only upwardly.
A lower opening member 6 having an annular recess 6b opening downward, and a cylindrical case 7 that is elastically fitted and fixed to the lower opening member 6, in other words, fixed by force fitting. A cover 8, which has a substantially triangular shape in side view and covers the outer circumference of the liquid injection tube 1, is attached to the outer circumferential surface of the case 7 with screws 9.

The upper lid B has a horizontal pin 10 attached to the outer cover 11 locked to the horizontal groove 6d of the lower opening member 6, as shown in FIGS. 1A and 1B.
By making the upper cover swing vertically around the lower opening member 6, the upper cover B can be opened, closed, engaged and disengaged from the lower opening member 6, and is attached to the outer cover 11 with screws 61 while forming an appropriate space. an inner cover 13 to be held;
3, a lock member 14 that can be freely engaged with the locked piece 6c of the lower mouth member 6 from above and can be detached by swinging upward;
A spring 15 is provided to urge the lock member 14 to move in the engagement direction.

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 is screwed into the upper support member 17, and an elastic cylindrical piece 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 that is inserted and held from below is provided in series with the lower support member 18, and through holes formed at the two locations displaced by 180 degrees in the circumferential direction of the lower support member 18 are opened and closed, respectively. 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 vertically, and between the liquid injection pipe 1 and the triangular cover 8, , a lever 25 that projects outward through a protruding piece 25a that can push up the other end of the operating rod 24 and an opening 8a cut out in the triangular cover 8;
An operating member 25 equipped with b 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. At the same time as the packing 27 is attached, a packing 28 is elastically pressed against the upper surface of the lower opening member 6 so as to communicate with the elastic cylindrical body 20.
The air supply passage D from the pump chamber 12 to the medium bottle 2 is connected to the medium bottle 2 via these gaskets 27 and 28.
The cover body 31 is attached to the inner cover 13 so as not to penetrate through the inner cover 13 and to utilize the space within the upper cover B located above the pump chamber 12.

A cylindrical portion 31a is integrally formed on the cover body 31 to form a communication path E leading to the outside air, and a portion of the gasket 28 is in contact with the periphery of the tip of the cylindrical portion 31a. There is.

In the pump chamber 12 of the bellows pump P, one end of a valve rod 32 which is urged back in the direction of extension of the elastic bellows 16 by the coil spring 21 fits into the hook valve 22, and the other end is fitted into the cylinder of the support member 17. It is engaged and connected to one end of a valve 34 which contacts one end of the elastic cylindrical body 20 to close the air discharge port 33 at the tip of the shaped body 17a, and is slidably connected within a certain range to the valve rod 32. A spring 35 urges the valve 34 and the valve 34 away from each other, and these constitute a valve mechanism V.

The triangular cover 8 has a locking state and an operation that project into the movement path of the operating member 25 by sliding in the lateral direction and come into contact with 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 where 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 an annular space 30 formed between the outer peripheral surface from the mouth 2b of the medium bottle 2 to the shoulder and the inner peripheral surface of the case 7.

By utilizing the relatively large annular space 30 existing outside the mouth of the medium bottle 2 and arranging the main part of the bellows pump P, the stability, which is an important element for a thermos bottle, is improved. This allows the overall structure to be made as low in bulk as possible while increasing the value.

When pouring out the stored liquid from the thermos configured in this way, when the lever 25b is pushed down with a fingertip, the operating rod 24 swings up and down in conjunction with this, and is attached to the inner circumference of the hook valve 22. After the hook valve 22 is closed, the bellows 16 is compressed so that the packing 36 comes into contact with the support member 18. At the same time as the bellows 16 is compressed, the valve rod 32 and the valve 34 are pushed up.
The distal end surface of the valve 34 comes into close contact with the gasket 28 at the distal end of the cylindrical portion 31a to close the communication path E. Further, by compressing the bellows 16 upward while allowing the valve rod 32 to slide relative to the valve 34, the pressurized air passes through the air supply passage D in a closed state and into the medium bottle 2.
The liquid is discharged inside 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 normally open, and the air discharge port 33 of the pump chamber 12 is normally closed by the valve 34. Therefore, air can freely enter the pump chamber 12, and even if the entire container accidentally falls over, the liquid in the medium bottle 2 will not enter the pump chamber 12 through the air supply passage D, and the medium bottle The steam in 2 is in the air supply passage D.
and can escape to the outside through the communication path E,
This makes it possible to prevent the stored liquid from being unexpectedly poured out from the injection pipe 1 due to an increase in vapor pressure within the medium bottle 2.

Therefore, even if the liquid in the liquid container 2 is at a high temperature, it can be safely contained while escaping the vapor generated in the container 2, and even if the entire container falls, the liquid will not enter the pump chamber 12. This prevents deterioration of the air pump.

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.

[Another example]

(a) In the valve mechanism V, the valve rod 32 may be integrally molded to the hook valve 22 as shown in FIGS. 4 and 5. In this case, the molding becomes easier, and As shown in FIG. 2, a valve rod 32 instead of the hook valve is passed through the elastic bellows 16 below the lower support member 18, and its lower end is brought into contact with the lower surface of the support member 18 so that the bellows 1
6 may be provided with a flange portion 32e that can be compressed, and in this case, the structure is simple and manufacturing is inexpensive. Further, as shown in FIG. 6, the valve rod is omitted and springs 37a and 37b are interposed between the hook valve 22 and the valve 34 and between the lower end of the valve 34 and the elastic cylindrical body 20, respectively. 34 may be used to close the mouth 33 of the pump chamber 12, and the upward movement of the hook valve 22 may be balanced so that the valve 34 is pushed up via the spring 37a. Therefore, the number of parts of the valve mechanism V can be reduced, and the number of processing steps can be reduced.

(b) The valve 34 and the valve rod 32 may be engaged and connected via another valve rod 32' so as to be vertically movable relative to each other, as shown in FIG. It is formed into a cylindrical shape through which air can freely enter and exit, and a valve spring 35 that keeps the valve 34 a certain distance apart from the valve rod 32 is installed inside the tube, so that the other valve rod 32' can move vertically smoothly. and the cylindrical body 17a.
A rib 17b may be formed on the inner surface of the cylindrical body 17a in order to create a gap through which air can pass between the valve rod 32' and the valve rod 32'.

(c) Both the lower opening member 6 and the bellows cover 19 are shown as being made of synthetic resin, but as shown in FIG. 9, the lower opening member 6 may be made of a metal plate. In this case, In order to reinforce the lower opening member 6 made of a metal plate, a reinforcing member 41 that is integrally joined by caulking is used instead of the bellows cover, and an air pump is installed between the lower opening member 6 and the reinforcing member 41. There is an advantage that P and the valve mechanism V can be provided and they can be reliably protected.

(d) Valve rod 32 that fits inside the hook valve 22
Then, as shown in FIG.
It may be formed above the hook portion 22a of the hook valve 22 relative to the support member 18. In this case, the diameter of the hook valve 22 into which the valve rod 32 fits can be formed as small as possible, and the hook valve 22 itself can be made smaller and less expensive. It becomes a part.

(E) In place of the aforementioned hook valve 22, the 12th
As shown in the figure and FIG.
... may be provided, and a check valve 43 having a valve plate 42 that swings or moves up and down may be installed inside.

(f) In the valve mechanism V, as shown in FIGS. 14 and 15, the communication passage E is closed by a structure in which the cylindrical portion 31a of the other cover body 31 of the valve 34 is movable up and down in the direction of its cylinder axis. A bottomed cylindrical valve body 4 that fits externally into the
4 is placed on the upper surface of the valve 34, and the valve packing 45 is fitted into the bottom of the inner surface of the valve body 44, and the valve 34 is closed.
As the valve body 44 rises, the valve body 44 may be pushed up, and the valve packing 45 inside the valve body 44 may come into contact with the lower end of the cylindrical portion 31a to close the communication passage E. In this case, The communication path E can be closed stably and reliably, and the structure of the gasket can be simplified.

In addition, as shown in FIG. 14, when the gasket 28 is brought into close contact with the lower mouth member 6, a seal gasket 46 for sealing between the lower mouth member 6 and the cylindrical body 17a is provided to form a two-stage seal structure. However, as shown in FIG. 45, if the packing 28 is brought into close contact with the tip of the cylindrical body 17a, the seal between the lower opening member 6 and the cylindrical body 17a becomes unnecessary, and the parts You can reduce your score.

(g) To form the communication path E, please refer to Figure 16 and Figure 1.
As shown in FIG. 7, a simple hole may be provided in the cover body 31, and in order to open and close this hole, in FIG.
A rod-shaped valve body 47 with a two-stage structure that opens and closes is housed inside the cover body 31, and the valve body 47 is pushed up by the upward movement of the valve 34, opening the opening of the gasket 28 and at the same time opening the communication passage E. close.

In addition, in FIG. 17, a swing valve 48 that swings around the pivot shaft 0 is attached to the cover body 31, and the valve 34
The swing valve 48 swings as the valve moves upward, thereby closing the communication passage E.

Therefore, each of the passages D and E is opened and closed by a separate valve, so that the operation of these valves becomes more reliable.

(H) The elastic bellows 16 is shown as being donut-shaped and consisting of separate inner and outer bellows-like membrane bodies 16a and 16b, but as shown in FIGS. 18 to 20, it is divided into two left and right members in plan view. By separately providing levers 25b forming a half-moon-shaped bellows and operating the divided bellows 16 on both sides of the cover 8, and by using these levers 25b, 25b separately for the left and right, or by pressing them simultaneously, It may also be configured to allow the amount of water injected to be freely adjusted.

By dividing the bellows 16 into half-moon shapes, blow molding becomes possible, which has the advantage of making manufacturing easier.

(li) The liquid storage container shown does not have a water meter, but when displaying the amount of water in container 2,
As shown in FIG. 21 or 22, a panel 49 with a water level display window 49a is attached to the case body A, and a water level display tube 50 is installed inside this panel 49.
A hole 52 formed at the bottom of the container body 2a and an air supply passage D in the upper lid B are connected via a connecting pipe 51, and as air is pressurized into the container 2 by the air pump P, the water amount is displayed. Prevent the water level in the pipe 50 from rising.

In order to connect the connecting pipe 51 to the hole 52 at the bottom of the container body 2a, in FIG. The hole 52 is fixed by a pipe stopper 55 screwed into the pipe 53.
The stainless steel pipe 53 and the connecting pipe are connected by sandwiching the stainless steel pipe 53 and the connecting pipe.

In addition, in FIG. 22, a cylindrical sealing packing 59 is inserted into the hole 52 by screwing a packing presser 58 onto a bottom main body 56 for fixing the container body 2a in the case main body A and an internal screw 57 screwed into the bottom main body 56. The connecting pipe 51 is connected to the seal packing 59 by direct pressure, thereby simplifying the assembly structure.

Reference numeral 60 denotes a rotating body rotatably provided on the bottom main body 56, so that the entire container can be rotated around the central axis in the vertical direction.

(N) In the case shown in FIGS. 7 and 8, a communication path is not formed in the air supply path D from the pump chamber 12 to the inside of the container 2, and the liquid inside the container 2 flows back into the pump chamber 12. Although only a valve 34 is provided to prevent the container 2 from
It is effective and can be manufactured at low cost if high-pressure steam is not generated internally.

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]

The drawings show an embodiment of a liquid storage container with an air pump according to the present invention, and FIG. 1A is a partially cutaway side view;
Figure 1 B is an action diagram showing a part of Figure 1 A, and Figure 2
The figure is a sectional view taken along the - line in Fig. 1A, Fig. 3 is a sectional view taken along the - line in Fig. 1A, Figs. 4 to 17 are sectional views of main parts showing another embodiment, and Fig. 18 is a A plan view of main parts showing the embodiment, FIG. 19 is a plan view of FIG. 18,
FIG. 20 is a sectional view taken along the line -- in FIG. 18, and FIGS. 21 and 22 are sectional views of main parts showing different embodiments. 2...liquid container, 2a...container body, 2b...
Mouth portion, 3... Plug body, 6... Lower mouth member, 7... Case, 16... Elastic bellows, 22... Valve, 2
4, 25...Manual operating tool, 26...Air flow path, 3
0... Annular space, 33... Air discharge port, B... Top lid, D... Air supply passage, P... Bellows pump, V
...Valve mechanism.

Claims (1)

[Claims] 1 A mouth portion 2b having a smaller diameter than the maximum body diameter portion of the container body 2a is connected to the container body 2a at a position above the maximum body diameter portion, and a shoulder extending from the maximum body diameter portion to the mouth portion 2b is provided. A liquid container 2 in which a part is formed.
and a case 7 that covers the outer peripheral surface of the liquid container 2.
, an annular lower mouth member 6 installed across the mouth part 2b and the case 7, a plug body 3 attached to the mouth part 2b, and a swinging member that covers the upper surface side of the lower mouth member 6. an elastic bellows 16 mounted in a position within an annular space 30 surrounded by a top lid B that can be opened and closed; and an air discharge port 33 opening on the upper surface of the lower mouth member 6, and manual operation tools 24 and 25 for vertically expanding and contracting the elastic bellows 16 from the lower surface side. In the container, when the upper lid B is closed, the air outlet 33 is connected to the liquid container 2 through the air passage 26 formed in the stopper 3.
An air supply passage D is formed in the upper lid B, and a valve mechanism V is provided to close the air outlet 33 when the manual operation tools 24 and 25 are not operated, and the elastic bellows 16 is extended. As the air in the annular space moves, the elastic bellows 1
6. A liquid storage container equipped with an air pump, characterized in that a valve 22 is installed to supply the liquid into the container.