JPS6033881Y2 - Pneumatic liquid dispensing device for thermos bottles, etc. - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an air pressurized liquid dispensing device for thermos bottles and the like.

For example, as shown in FIG. 1, this type of dispensing device includes a cap C that is attached to the shoulder of a thermos flask A and has an air pump B, and a cap C that is attached to the mouth of the thermos A and has an air pump B. It consists of a stopper F having an air passage for introducing air supplied from B into the thermos flask A and a liquid content pouring passage E for guiding the pressurized liquid contents out of the thermos flask. It can be opened and closed by pivoting G as shown in Figure 1 to the shoulder of the
2. When the stopper MC is opened, the stopper F can be attached and removed.

However, the pivoted lid C gets in the way of various operations performed by opening the lid C, such as supplying and draining the liquid from the mouth of the thermos flask A, or cleaning the inside of the container or the shoulder. It is also inconvenient to clean the lid itself.

For these reasons, there has recently been a demand for the lid C to be a removable lid member, and a rotary attachment/detachment structure using a screw or similar helicoidal protrusion or bayonet piece has been developed. Although it is advantageous in terms of reliability and ease of attachment and detachment, the air intake port d of the closure air passage and the closure C
This is because the backing H, which is attached to either side of the air supply port from the side pump B and presses against the other mouth edge, is twisted or twisted due to large pressure friction when rotating when attaching and detaching the stopper cover C. The backing H may actually obstruct communication between the air supply port d and the air intake port d, or the backing H itself may easily fall off or be damaged.

Therefore, it is difficult to ensure functional safety.

The object of this invention is to provide a convenient pneumatic injection device for dispensing the contents of a thermos flask, etc., which has a rotary attachment/detachment structure and is free from the above-mentioned problems.

To explain the embodiment shown in FIGS. 2 and 3,
Reference numeral 1 denotes a thermos-type container with a built-in vacuum double layer 2, and a stopper 3 is removably fitted into the mouth part 1a.
A stopper lid 4 is removably screwed 5 onto the outer periphery of a saucer-shaped shoulder portion 1b formed at the center.

The lid 4 has a built-in air pump 6 that supplies pressurized air by pushing down the bellows 6a with a pressing plate 6b, and the bottom plate 4
A lower air supply from the pump 6 is provided at a.

The plug body 3 includes an air passage 8 that is connected to the air supply lower and introduces pressurized air into the class 2, and a liquid content pouring passage 9 that leads the pressurized content liquid inside the class 2 to the outside of the container 1. The spout 9a side of the passage 9 extends laterally from the protrusion of the stopper 3 protruding toward the shoulder 1b, and protrudes toward the container 1 side along the beak IC of the shoulder 1b, The spout 9a projects downward from the tip of the beak 1c and opens downward.

The lid 4 has a lid 4b that protrudes to one side relative to the beak 1c, and the lid 4b is positioned above the beak 1c in the final stage of screwing the lid 4 onto the shoulder 1b. It is.

The air supply port 10 of the air passage 8 provided in the closure body 3 is provided with a backing 1 that comes into pressure contact with the air supply lower when the closure 4 is screwed 5 and connects the passage 8 to the air supply lower.
1 is provided.

The air supply lower and the air intake port 10 are opposed to each other on the closure axis of rotation 12 when the closure 4 is screwed on 5, and the backing 11 is aligned with the upwardly protruding portion 10a of the air intake port 10. It is attached by elastic fitting 15 to the upper end of a rotating ring 14 whose lower end is rotatably fitted 13 to the outer periphery.

In order to locate the air intake port 10 on the axis 12,
Although it is eccentric from the air passage 8, a specific structure for arranging the air supply lower and the air intake port 10 to face each other on the axis 12 can be freely designed.

When the faucet lid 4 is rotated to be attached or removed, the king 11 is in pressure contact with the air supply lower part and receives the rotation of the faucet lid 4, but the backing 11, together with the rotating ring 14, is easily attached to the air supply lower part. The backing 11 rotates together, and the backing 11 does not twist or bend due to friction with the lower air supply section.

Therefore, the backing 11 always connects the air supply lower and the air intake port 10 perfectly, is less prone to fatigue and damage, and has significantly improved durability.

Moreover, the resistance to attaching and detaching the cap lid 4 due to the pressure friction of the backing 11 is eliminated, and the cap lid 4 can be easily attached and detached.

Here, the rotating ring 14, which is a rotatable mounting structure or a member thereof for the air supply port 10 of the backing 11,
The pressure contact friction between the backing 11 and the air supply lower, which is not provided with the backing 11, caused by the threaded connection 5 of the stopper lid 4 is eliminated by preventing the relative rotation of both, and acts as the most effective friction mitigation means.

The same effect can be achieved even if the backing 11 as described above is received on the side of the air supply lower and pressed against the air intake port 10.

In the figure, reference numeral 14a denotes a protrusion formed on the lower surface of the rotating ring 14 to reduce contact friction with the plug body 3.

Reference numeral 16 denotes a bundle, which is pivotally attached to the side surface of the shoulder portion 1b.

The embodiment shown in FIG.
The container 21 has a shoulder 21b with an air supply port 24, which also serves as a container opening, communicating with the inside of the inner container 23. A liquid content pouring passage 25 is provided in the center to allow air to pass therethrough, and is removably fitted next to the air intake port 24 for guiding the liquid content heated in the inner container 23 to the outside of the container 21.

The container 2 protrudes above the shoulder 21b of this passage 25 and extends laterally.
The portion projecting to one side is covered with a synthetic resin cover 26, and the spout 25a is a plug 33 that projects downward from the tip, and the plug 33 is inserted into the concave portion 27 of the shoulder 21b. It is removably fitted and the passage 25 is connected to the shoulder part 21b.
The shoulder portion 23a of the inner container 23 is removably inserted into the inner container 23 so as to be exposed inside the inner container 23.

On the outer periphery of the shoulder portion 21b of the container 21, a female screw portion is provided together with the cover 26 of the stopper body 33 that fits into the concave portion 27 of the shoulder portion 21b, and a stopper lid 28 is screwed 34 thereon.

The stopper lid 28 has a bellows 29a pressed by a pressing plate 29 as in the previous embodiment.
It has a built-in air pump 29 operated by pressing b, and the bottom plate 2
An air supply port 30 projecting downward is provided at 8a.

The air supply port 30 is provided with a rotating ring 32 that is rotatably fitted on the outer periphery of the lower end portion that is shallowly and loosely fitted into the air supply port 24 of the shoulder portion 21b. Air intake port 2
A backing 35 that presses against the four parts is provided.

36 is an axis of rotation for screwing the stopper lid. Of course, in this embodiment as well, the rotating ring 32 or the rotating structure of the backing 35 formed by the rotating ring 32 serves as a friction mitigation means similar to that of the previous embodiment.

In the embodiment shown in FIG. 5, a backing 42 is fitted around the outer periphery of an air supply port 41, and a pressure contact portion of the air intake port 43 with the backing 42 is made into a tapered surface 43a. When the air supply port 41 and the air intake port 43 are close to each other due to screwing, the backing 42 is adjusted according to the degree of proximity.
The degree of pressure contact between the air intake port 43 and the backing 42 is relaxed, and the pressure contact friction between the air intake port 43 and the backing 42 is alleviated, so that both ports 41 and 43 face each other on the threaded rotation axis 45 of the stopper lid 44. In addition to this, this suppresses inconveniences such as twisting, fatigue, damage, and falling off of the backing 42.

Therefore, the tapered surface 43a serves as a friction mitigation means.

FIG. 6 shows that the backing 53 fitted into the air supply port 52 of the stopper lid 51 is made into a cylindrical shape and its protruding lower end is connected to the air intake port 52.
In order to press the tapered surface 54a of
While the flexibility of the cylindrical tip of the backing 53 that comes into pressure contact with the tapered surface 54a helps alleviate this, the mutual contact portions 52a and 54b of the openings 52 and 54 are provided to increase the maximum degree of pressure contact between the backing 53 and the tapered surface 54a. The contact portions 52a, 54b are arranged to further protect the backing 53.
acts as a pressing force alleviating means, and as a result of alleviating the pressing force, the pressing friction is alleviated, and is a part of the friction alleviating means.

Reference numeral 55 indicates the axis of rotation of the stopper lid.

In FIG. 7, a backing 63 is fitted around the outer periphery of the air supply port 62 of the stopper lid 61, and the pressure contact surface of the air intake port 64 with the backing 63 is made into a cylindrical surface 64a, and both eyes 62. Due to the proximity of 64, backing 63 and cylindrical surface 6
The degree of pressure contact with 4a does not change, but the pressure contact friction is alleviated within a certain limit, and the cylindrical surface 64a serves as a friction mitigation means.

Reference numeral 65 indicates a rotation axis for screwing the plug body. The same effect can be achieved even if the backing is attached to the air intake port side in FIGS. 5 and 6.

Although each of the above-mentioned embodiments has only been described in which the stopper lid is screwed onto the shoulder of the container, it is also applicable to a similar rotary attachment/detachment structure using helicoid protrusions or bayonet pieces. Of course.

In addition, air pressure pumps can also be used in manual, electric, and type% types.According to this invention, the air supply port from the air pressure pump is connected to the air supply port of the stopper lid that is screwed onto the shoulder of the container. An air intake port provided directly or indirectly on the shoulder of the container for introducing pressurized air into the container is arranged to face each other on the threaded rotation axis of the stopper lid, and one of the air supply port and the air intake port Means for reducing or eliminating at least one of the relative rotational friction forces caused by the pressing force between the backing and the other, which are provided so as to be in pressure contact with the other when the stopper lid is screwed together, in a direction in which they approach each other when the stopper lid is screwed together. is provided on one or both of the air supply port and the air intake port, so when the lid is rotated to attach or remove, the backing and the air supply port or air intake port where the backing is not provided are connected. Pressure friction is reduced, making it easier to attach and detach the lid with less resistance.The backing does not twist or bend, and the air supply port and air intake port are always connected securely, reducing back pain and fatigue. It is less likely to be damaged and has significantly improved durability.

[Brief explanation of drawings]

Fig. 1 is a partial sectional view of a conventional example, Fig. 2 is a sectional view showing one embodiment of the invention, Fig. 3 is an enlarged sectional view of the main part, Fig. 4 is a sectional view of another embodiment, and Fig. 4 is a sectional view of another embodiment. 5 to 7 are enlarged sectional views of main parts showing different embodiments, respectively. 1.21...Container, lb, 21b...
Shoulder part, 3.33=-...Plug body, 4.28.44.5
1.61... Cap lid, 5, 34... Screw on, 6, 29... Air pressure pump, ? ,30,4
1.52.62...Air supply port, 9,25...
... Contents liquid pouring passage, 10°24, 43.54.
64...Air intake port, 11°35.42,53
, 63...Backing, 12°36. 45.
55.65... Stopper lid screwing rotation axis, (14,3
2...Rotating ring, 43at54a...Tapered surface, 52a. 54b...Abutment portion, 64a...Cylindrical surface) Friction alleviation means.

Claims (5)

[Scope of utility model registration request] (1) An air supply port of an air pressure pump provided in the lid screwed onto the shoulder of the container, and connected to the air supply port to introduce heated air into the container and push out the liquid inside the container. The air intake port provided directly or indirectly is positioned on the screwing rotation axis of the stopper lid, and one of the air supply port and the air intake port is pressed against the lip of the other when the stopper lid is screwed. A backing is provided, and one or both of the air supply port and the air intake port is provided with means for reducing or eliminating at least one of pressure contact force and relative rotational friction force between the backing and the other. Air press type % type % for thermos flasks etc. (2) The means is such that the backing is attached to an air supply port in which the backing is provided or a rotating ring rotatably attached to the air supply port. Pneumatic liquid dispensing device for thermos bottles, etc. (3) The thermos flask or the like according to claim 1, wherein the means is such that the pressure contact portion of the air supply port or the air intake port, where the backing is not provided, with the backing is made into a tapered surface. Pneumatic filling type liquid dispensing device. (4) The pneumatic liquid dispensing device for a thermos flask or the like according to claim 3, wherein the means has a pressure regulating portion between the backing and the tapered surface. (5) The thermos flask or the like according to claim 1, wherein the means is such that the pressure contact surface with the backing of the air supply port or the air intake port where the backing is not provided is a cylindrical surface. Pneumatic filling type liquid dispensing device.