JPH0673496B2 - Liquid storage container with air pump - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a liquid container in which a mouth part having a diameter smaller than the maximum body diameter part of the container body is continuously provided in an upper part of the container body in a case. The present invention relates to a liquid storage container with an air pump in which an air pump for sending the liquid in the liquid container out of the case is arranged.

[Conventional technology]

Various types of thermos have been known as a thermos bottle, which is an example of this type of liquid container.
The structure disclosed in Japanese Patent No. 6 has the structure described in the following [I] and [II].

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

[II] An air supply passage from the air pump into the liquid container,
It is formed in a state of being led out from a position corresponding to the lower part of the pump chamber of the air pump in the main body.

In such a conventional thermos, since the air pump is positioned so as to project largely above the mouth of the liquid container, not only the center of gravity is high and the stability is deteriorated, but also the bulkiness becomes high. In particular, when the operation tool of the air pump is provided on the upper portion of the air pump, there is an inconvenience that it becomes difficult to operate the pump. In addition, if external water or other liquid such as cleaning liquid gets into the pump chamber of the air pump, it tends to flow into the liquid container through the air supply passage.

Apart from the above-mentioned conventional technique, if it is considered to lead out the air supply passage from the upper part of the pump chamber, for example, the actual construction of Shokai 50-9
As shown in Japanese Patent No. 875, the air pump is arranged below the bottom of the liquid container, and the air passage led out from the upper part of the pump chamber is passed through between the outer side of the liquid container and the inner surface of the case to the mouth. There is also a means for introducing air into the container by extending it so as to form an air passage extending from above to below in the stopper.

However, in the above-mentioned conventional type in which the air pump is arranged on the lower side of the liquid container, a liquid container that becomes heavy in a liquid-filled state may be used even if there is less risk of sending the liquid that has entered the pump chamber into the liquid container. It is located higher, the center of gravity becomes higher, and the stability becomes worse, and the length of the air supply passage from the pump to the liquid container becomes longer, which may deteriorate the responsiveness. In some cases, it is unavoidable that a large amount of liquid easily enters the pump chamber.

[Problems to be Solved by the Invention]

In other words, any of the above conventional structures has a common problem that it is bulky and lacks stability, and in the former case, if a cleaning liquid enters the pump chamber, There is a problem that it easily flows into the container, and in the latter case, there is a problem that a large amount of liquid easily flows into the pump chamber even during a momentary fall.

The present invention improves the above-mentioned conventional drawbacks by improving the rational arrangement of the constituent members, and can be compact and low in volume relative to the total volume, and also enhances the responsiveness of the pump and reduces the air pump chamber. The object is to prevent the liquid from flowing into the container body and to make it difficult for the stored liquid in the container body to flow into the pump chamber.

[Means for Solving the Problems]

The characteristic configuration of the liquid storage container with an air pump according to the present invention, which has been devised to achieve such an object, includes a container outer peripheral surface near the mouth portion, an inner peripheral surface of the case, and a shoulder member constituting a main body shoulder portion. The air pump is placed in a space formed between the air pump and an air supply passage from the air pump into the liquid container. A passage start end is connected to an upper portion of the air pump and an opening at a passage end is formed. Between the upper surface of the shoulder member and the upper edge of the mouth of the liquid container, the upper side is located facing the stopper inserted in the mouth, and the passage intermediate portion constitutes the upper wall of the air pump. It is provided in a state of being located in a space formed between the support member and the shoulder member.

[Action]

The effect of taking the above technical means is as follows.

i In order to insulate the inside and outside of the container, the mouth of the container is made as small as possible to reduce heat transfer through the plug attached to this mouth, and to lengthen the mouth of the container in the vertical direction. ,
Focusing on the unique shape of the mouth of the container that is adopted to satisfy the required function of enlarging the contact surface between the stopper and the container and improving the sealing performance, the space that exists due to this unique shape In other words, the relatively large shoulder space existing between the outer peripheral surface of the container near the mouth and the inner peripheral surface of the case is used, and the air pump is installed in a large space without inviting an increase in the size of the entire container. I am doing it.

ii The air supply passage is
Since it is formed so as to be led out from the upper part of the pump chamber, even if external water or other things enter the pump chamber, it is possible that these will flow into the liquid container through the air supply passage. It can be suppressed more easily than when it is communicated with the lower part of the pump chamber.

iii Further, since the opening at the end of the air supply passage is formed so as to face the stopper inserted into the mouth of the liquid container, even if the container falls for a moment, the liquid in the liquid container falls over. The dynamic pressure at the time does not act directly on the air supply passage, but only a small amount of liquid that has passed through the narrow gap between the plug and the mouth flows to the air supply passage side with a slight static pressure. I will try to insert it, but unless the air inside the pump chamber is replaced with good conditions,
It rarely flows back into the pump chamber through the air supply passage.

iv Furthermore, since the intermediate portion of the air supply passage is located in the space formed between the shoulder member and the upper support member of the air pump,
The entire length of the air supply passage can be made shorter than in the case where the lower side of the air pump is bypassed and guided to the upper portion of the plug body, or the end of the air supply passage is guided through the shoulder member to the upper side of the plug body.

〔The invention's effect〕

(A) Due to the effect of the above i, the liquid container with the air pump which is compact as a whole and has a low center of gravity and good stability while avoiding an increase in the bulk due to the installation space of the air pump despite the large capacity of the container Was obtained.

(B) Due to the effects of ii and iii above, it is easy to suppress the inflow of liquid from the liquid container to the pump chamber as much as possible, and even if external water or cleaning liquid enters the pump chamber, the liquid will It is easy to avoid flowing into the liquid container and can be used hygienically.

(C) Due to the action of iv above, the overall length of the air supply passage is shortened as much as possible, and even the air supply passage is provided in the space around the narrow container mouth, thereby further reducing the overall size. This is also advantageous in that the length of the air supply passage can be shortened and the responsiveness to pump operation can be improved.

〔Example〕

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

As shown in FIGS. 1 to 3, in an internal space formed by a case main body (A) having a downwardly inclined liquid injection pipe (1) and a swingable openable / closable upper lid (B), Container body (2a)
A liquid container made of vacuum glass (hereinafter, referred to as a medium bottle) (2) in which a mouth portion (2b) having a diameter smaller than the maximum body diameter portion of (2) is continuously provided on the upper portion of the container body (2a); A first water conduit (4) for guiding the liquid in the middle bottle (2) to the stopper (3) and a second water conduit ((2) for guiding the liquid from the stopper (3) to the liquid injection pipe (1) ( 5) an inner stopper unit (C), and the liquid in the inner bottle (2) by pressure-feeding air into the inner bottle (2). The inner stopper unit (C) and the liquid injection pipe (1). Manual bellows pump (which is an example of an air pump) for sending out to the outside of the case body (A) through the (P).
And a main part thereof are provided to form a thermos bottle which is an example of a liquid container with an air pump.

The case body (A) includes a shoulder member (6) having a through hole (6a) for inserting and holding the liquid injection pipe (1) only upward so as to be held therein and an annular recess (6b) opening downward. )
And a cylindrical case (7) which is elastically fitted and fixed to the shoulder member (6), in other words, which is forcibly fitted and fixed, and the outer peripheral surface of the case (7). A cover (8) having a substantially triangular shape in side view, which covers the outer peripheral portion of the liquid injection pipe (1), is attached by means of screws (9).

The upper lid (B) is fitted to the shoulder member (6) with an outer cover (11) which is vertically swingable around a lateral pin (10), and a state in which a space is appropriately formed in the outer cover (11). An inner cover (13) that is held together, and between the covers (11) and (13) is engaged with the locked piece (6c) of the shoulder member (6) from above. And a coil spring (15) for urging the lock member (14), which is freely movable in the horizontal or substantially horizontal direction and can be engaged and disengaged in the horizontal direction, in the engaging direction.

The bellows pump (P) is configured as follows.

In the annular recess (6b) of the shoulder member (6), the pump chamber (1
A donut-shaped elastic bellows (16) forming 2), and
A bellows cover (19) having a substantially U-shaped cross section, which houses annular support members (17) and (18), whose upper and lower sides are attached in an airtight state by ultrasonic welding means, is screwed and fixed. As shown in Figs. 3 and 4, the shoulder member (6) pierces and supports the first air supply pipe (38) in a sideways posture which opens near the upper part of the mouth (2b) of the inner bottle (2). The outer end of the first air supply pipe (38) and the air supply port (17a) formed at one location in the circumferential direction of the upper support member (17) are connected to each other through the second air supply pipe (39). At the same time, a check valve (40) having an opening / closing notch (40a) formed in the radial direction is inserted into the inner end of the first air supply pipe (38). The lower support member (18) is 180
A through-hole formed at each of the two displaced positions is openable and closable, and a hook valve (22) biased in an open state via a coil spring (21) is inserted and locked.

Further, the bellows (16) is contracted to the bracket (23) connected to the bellows cover (19) via the pair of hook valves (22), (22) and the lower support member (18). The operating rod (24) having a V-shape is pivotally attached so as to be vertically swingable, and the other end of the operating rod (24) is pushed down between the liquid injection pipe (1) and the triangular cover (8). Possible protrusions (25a) and notches (8) in the triangular cover (8)
An operating member (25) having a lever (25b) protruding outward through a) is attached so as to be vertically movable.

The triangular cover (8) is slid laterally so as to project to the movement path of the operation member (25) and contact the movement of the operation member (25) to the liquid pouring operation position. A lock operation tool (29) is provided that can be switched between a locked state for blocking and an unlocked state in which the operation member (25) is retracted from the movement path.

The bellows (16), the bellows cover (19), the lower support member (18), the hook valve (22), and the operating rod (24), which form the main part of the bellows pump (P),
It is arranged so as to largely enter the space (30) formed between the outer peripheral surface from the mouth portion (2b) of the middle bottle (2) to the shoulder portion and the inner peripheral surface of the case (7).

In this way, by using the relatively large annular shoulder space (30) existing outside the mouth of the middle bottle (2), the main part of the bellows pump (P) is greatly inserted and arranged,
The overall structure can be made as low as possible while improving the stability, which is an important element as a thermos.

When the stored liquid is poured out from the thermos configured as described above, when the lever (25b) is pushed down with the 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. The air pressurized by the bellows (16) is discharged into the inner bottle (2) through the air supply passage (D),
Pressurize the surface of the stored liquid. As a result, the stored liquid passes through the inside plug unit (C) and the liquid injection pipe (1) to the case (7)
It is poured out.

When the pushing force of the lever (25b) is released,
The bellows (1
6), hook valve (22), operating rod (24), operating member (2
5) are automatically returned to their original positions.

The hook valve (22) is in a normally open state, and vapor in the middle bottle (2) is released to the outside through the air supply passage (D) to increase the vapor pressure in the middle bottle (2). It is possible to prevent the stored liquid from unexpectedly pouring out from the liquid pouring pipe (1).

Further, the bellows cover (19) can prevent the bellows (16) from being damaged by fragments when the inner bottle (2) is damaged. Further, by screwing and fixing the bellows cover (19) to the shoulder member (6), the upper support member (17) can be simultaneously tightened and fixed between them.

The bellows (16) is composed of a pair of bellows-shaped film bodies (16a), (16b) positioned inside and outside at appropriate intervals.

In the above embodiment, the air supply port (17a) of the upper support member (17) is provided above the one hook valve (22) with respect to the hook valves (22), (22). However, they may be provided at positions displaced by 90 degrees in the circumferential direction from each other, or may be provided at other positions.

The structure of the air supply passage (D) is not limited to that of the above-mentioned embodiment, and the structure of each of the following embodiments may be adopted.

(A) As shown in FIG. 5, a portion of the shoulder member (6) above the mouth portion (2b) of the inner bottle (2) and an upper support member (17).
One elastic tube (41) having a packing function is passed through and held between the side wall of the elastic tube (41) and the end of the elastic tube (41) on the plug body (3) side. A simple check valve (42) that can be opened and closed is integrally formed.

In the case of this embodiment, since the air supply passage (D) is constituted by one elastic tube (41), there is an advantage that the air supply structure can be simplified and the production can be facilitated.

(B) As shown in FIGS. 6 and 7, between the mouth packing (43) provided on the periphery of the mouth portion (2b) of the inner bottle (2) and the shoulder member (6) in a plan view. An annular member (44) having an annular shape and integrally provided with a ventilation cylindrical body (44a) at one position in the circumferential direction thereof and an air supply port of the upper support member (17) are connected to an air supply pipe ( 45) for communication connection.

In the case of this embodiment, since it is sufficient to set the annular member (44) between the mouth packing (43) and the shoulder member (6), there is an advantage that the assembling can be facilitated.

(C) As shown in FIGS. 8 and 9, between the mouth portion (2b) of the middle bottle (2) and the shoulder member (6), the elastic tube (41) shown in FIG. An annular member (46) made of rubber or soft resin having a tubular portion (46a) having a function is interposed.

In the case of this embodiment, in addition to the effect described in (b) above, the annular member (46) can also be used as a mouth packing, so that the number of members can be reduced by this combination, and the assembly can be performed. There is an advantage that the facilitation of the above can be promoted.

(D) As shown in FIGS. 10 and 11, the shoulder member (6)
The packing (4) that is fitted to the stopper (3) while being in contact with the
A valve body (48) having the same function as the check valve (40) shown in FIG. 3 is integrally connected to 7).

In the case of this embodiment, since the valve body (48) can be integrally formed with the inner plug packing (47) at the same time, there is an advantage that the manufacturing and assembling can be facilitated.

(E) As shown in FIG. 12, the first ventilation pipe (49) penetratingly held by the shoulder member (6) and the second ventilation pipe (50) penetratingly held by the upper support member (17). Insert it in the airtight state,
A plurality of ribs (51) extending along the pipe axis are continuously provided on the inner peripheral surface of the insertion pipe portion (49a), and a water blocking ball (52) capable of closing the second ventilation pipe (50). Are provided so as to be slidable and movable along the ribs (51).

In the case of this embodiment, normally, air from the pump chamber (12) is smoothly sent into the inner bottle (2) through the gap between the adjacent ribs (51), (51), but at the time of tipping, The water stop ball (52) has an advantage that liquid can be prevented from entering the pump chamber (12).

(F) As shown in FIG. 13, the first ventilation pipe (53) penetratingly held by the shoulder member (6) and the second ventilation pipe (54) penetratingly held by the upper support member (17). The second ventilation pipe (5) in the first ventilation pipe (53).
A valve body (55) capable of closing 4) and a coil spring (56) for urging the valve body (55) in the closing direction are provided, and further,
A packing (57) is fitted on the outer peripheral surface of the valve body (55).

According to this embodiment, the valve body (55) is elastically urged in the closing direction, and the packing (57) is provided on the outer peripheral portion of the valve body (55). ,
There is an advantage that it is possible to ensure the action of preventing the liquid from entering the pump chamber (12), which is required when the engine falls.

Next, an example of the water amount display structure will be described. As shown in FIG. 14, the bottom of the middle bottle (2) and the water conduit (84) in the horizontal position, the water conduit (84) and the glass water amount display pipe (85) in the vertical position and this water amount display pipe ( 85) and the shoulder member (6) are connected to each other through tubular packings (86).

In the figure, (87) is a water amount display window.

In the case of this embodiment, since the pipes (84), (85) and the packing (86) are combined, there is an advantage that the assembling can be facilitated.

<Other Examples> [I] The bellows (16) has a bellows shape or a bellows shape, and the bellows (16) has a horseshoe shape instead of a series of donut shapes in plan view. For example, it may be divided into a plurality in plan view, and a plurality of small tubular bellows may be used.

In short, there are various shapes of the bellows (16), and it is advisable to select the shape appropriately according to the usage conditions.

[II] The hook valve and the check valve other than those in the above-mentioned embodiments are used.

[III] Apply this plan to liquid containers with air pumps other than thermos bottles.

[IV] 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, and the like. Further, as the reciprocating pump, there are a piston pump, a plunger pump, and the like in addition to the bellows pump described above.

[Brief description of drawings]

1 to 3 show an embodiment of a liquid container with an air pump according to the present invention. FIG. 1 is a partially cutaway side view, FIG. 2 is a sectional view taken along line II-II of FIG. FIG. 3 is a sectional view taken along the line III-III in FIG. 5, FIG. 6, FIG. 8, FIG. 10, FIG.
FIG. 13 and FIG. 13 are sectional views showing different embodiments, respectively.
FIG. 7 is a partially cutaway perspective view of an essential part of FIG. 3, FIG. 7 is a partially cutaway perspective view of an essential part of FIG. 6, and FIG. 9 is a partially cutaway perspective view of an essential part of FIG. FIG. 11 is an enlarged cross-sectional view of the main part of FIG. 10, and FIG. 14 is a schematic explanatory view showing a water amount display structure. (2) …… Liquid container, (2a) …… Container body, (2b) ……
Mouth, (3) …… Stopper, (6) …… Shoulder member, (7) ……
Case, (16) ... Bellows, (17) ... Upper support member, (30) ... Space, (B) ... Top lid, (P) ... Air pump, (D) ... Air supply passage.

Claims (10)

[Claims] 1. A liquid container (2) comprising a case (7) in which a mouth (2b) having a diameter smaller than the maximum body diameter of the container body (2a) is continuously provided above the container body (2a). ) And an air pump (P) for sending the liquid in the liquid container (2) out of the case (7), the container near the mouth (2b). (2) The air pump (P) is placed in a space (30) formed between an outer peripheral surface, an inner peripheral surface of the case (7) and a shoulder member (6) constituting a shoulder portion of the main body.
The air supply passage (D) from the air pump (P) into the liquid container (2) is connected to the upper portion of the air pump (P) so that the opening of the passage end is formed. Between the upper surface of the shoulder member (6) and the upper edge of the mouth (2b) of the liquid container (2),
Positioned opposite the stopper (3) inserted in the mouth (2b),
Further, with an air pump provided such that the intermediate portion of the passage is located in the space formed between the upper support member (17) forming the upper wall of the air pump (P) and the shoulder member (6). Liquid container. 2. A liquid container with an air pump according to claim 1, wherein the liquid container (2) is a vacuum glass medium bottle of a thermos bottle. 3. A liquid container with an air pump according to claim 1, wherein the air pump (P) is of a manual type. 4. The liquid storage container with an air pump according to claim 1, wherein the air pump (P) is of an electric type. 5. The liquid storage container with an air pump according to claim 1, wherein the air pump (P) is a reciprocating pump. 6. A liquid storage container with an air pump according to claim 1, wherein the air pump (P) is a rotary pump. 7. A liquid container with an air pump according to claim 5, wherein the reciprocating pump (P) is a bellows pump. 8. A structure in which a part of the constituent members of the air supply passage (D) is also used as a mouth packing interposed between the upper edge of the mouth portion (2b) of the liquid container (2) and the shoulder member (6). The liquid container with an air pump according to claim 1, wherein the liquid container has an air pump. 9. The liquid storage container with an air pump according to claim 1, wherein the air supply passage (D) is provided with a check valve. 10. The liquid storage container with an air pump according to claim 9, wherein the check valve is integrally formed with a constituent member of the air supply passage (D).