JPH0233728Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a heat-insulating container that incorporates an air pump and has a simplified plug body.

[Conventional technology]

A heat-retaining container is used that incorporates an air pump into the stopper that opens the container to pour out the liquid inside.

[Problem that the invention attempts to solve]

However, in the conventional plug body of such a heat insulating container, as shown in, for example, Japanese Utility Model Application Publication No. 143130/1983, the lower plate that receives the lower end of the bellows of the air pump inside the plug body is formed separately from the plug case. The plug is fixed to the plug case by screws or the like, which complicates the structure of the plug.

The object of the present invention is to provide a heat-insulating container in which the structure of the stopper is simplified by molding the lower plate integrally with the lower cylinder of the stopper.

[Means for solving problems]

In the present invention, a shoulder member 3 surrounding the opening at the upper end of the container 2 is attached to the container 2, and a lower cylinder 33b is screwed onto the shoulder member and has a lower plate 37 integrally formed therein.
The plug body 9, which has a base cylinder 33 having a base cylinder 33 having a top cylinder 33a which is fixed to the upper end of the bottom cylinder 33b and thereby forms a downward stepped part 39 projecting inward, is attached to the shoulder by the screwing. While attached to the member 3, an upper plate 36 is attached to the stopper 9, the lower end of which is received by the lower plate 37, and whose upward movement is restricted by the stepped portion 39.
This is a heat-retaining container characterized by having a bellows 35 whose upper end can be received by a bellows 35 and an air pump 5 capable of pressurizing the inside of the container 2.

One embodiment will be described below based on the drawings.

FIG. 1 shows an embodiment in which the heat insulating container is a so-called large-sized heat insulating container for liquid storage with a thick body. A plug body 9 incorporating an air pump 5, a spouting tool 8 having a pumping pipe 6 and a discharge pipe 7 is screwed together by a threaded portion 4 formed on the member 3. In the container 2, an outer cylinder 12 and an inner cylinder 13 inserted into the outer cylinder 12 are hermetically joined together at a neck part 17 around a device part 16 at the center of the upper end, and a vacuum is created between them. 12 is provided with small diameter portions 20, 21 at its upper and lower ends, and the small diameter portions 20, 21 are provided with a continuous protrusion 22, which protrudes outward at an intermediate height thereof.
form 23. The shoulder member 3 has a circumferential groove 24 on its lower surface that is open at the bottom into which the neck portion 17 is fitted, and an upper cylinder portion 27 that surrounds the opening 16 and is formed around the lower edge of the upper cylinder portion 27 and covers the upper surface of the outer cylinder 12. Disc part 29
and a hanging cylindrical portion 30 of a small height that hangs down from the outer peripheral edge and surrounds the small diameter portion 20. Further, a groove 31 is provided on the inner surface of the hanging cylinder portion 30 over the entire circumference.
By forcibly fitting the protrusion 22 into the shoulder member 3, the shoulder member 3 is irremovably attached to the container 2. The shoulder member 3 also includes a ring piece 6 welded to the upper surface of the outer cylinder 12.
By fixing screws to 1, the container 2 can be firmly attached and protected from impact.

Further, the threaded portion 4 is precisely formed on the outer peripheral surface of the upper cylinder portion 27, and the plug body 9 is attached to the threaded portion 4.

The plug body 9 has an internal thread 3 at its lower end that engages with the threaded part 4.
The air pump 5 is housed in a base cylinder 33 having a
Further, a pumping pipe 6 and a discharge pipe 7 are attached to the base cylinder 33.

The base cylinder 33 includes a lower cylinder 33b and a lower cylinder 33b.
The lower cylinder 33b includes a lower plate 37 that receives the lower end of the bellows 35 of the air pump 5, and a lower cylinder 33b that extends downward from the lower plate 37. Formed as a molded product integrally provided with a cylindrical lower circumferential wall having the internal thread 32 at the lower end and a cylindrical upper circumferential wall extending upward from the lower plate 37 and fixing the upper tube 33a at the upper end. be done. Note that the upper cylinder 33a can form a downward step portion 39 that projects inward by being fixed to the lower cylinder 33b.

The air pump 5 includes the bellows 35, the lower plate 37 that receives the lower end of the bellows 35, an upper plate 36 that receives the upper end of the bellows 35, and a push plate 42 that presses down the upper plate 36. The lower surface of the stepped portion 39 and its outer periphery contact to restrict the upward movement position, and an air hole 40 is provided in the center of the upper plate 36. The push plate 42 is attached to the upper cylinder 33
The periphery is guided by the inner wall surface of the upper plate 36 to move up and down, and as shown on the lower surface thereof, it is formed integrally with the push plate 42 and is approximately concentric with the air hole 40 of the upper plate 36, and the air hole 40 is closed by pressing down. A closing plate 43 that can be closed is provided. Further, a hanging piece 41 that can be inserted into the air hole 40 is provided below the closing plate 43 .

The hanging piece 41 has a cylindrical shape with a diameter smaller than that of the air hole 40, so that a gap forming an air flow path can be formed between the hanging piece 41 and the air hole 40. Also hanging piece 41
has a claw piece 41a facing outward and capable of locking the upper plate 36 at the lower end; therefore, the claw piece 41a is attached to the hanging piece 4
1. It is formed integrally with the push plate 42 via the closing plate 43. Note that the hanging piece 41 is formed so that the height from the lower surface of the closing plate 43 to the upper surface of the claw piece 41a is longer than the thickness of the upper plate 46, and therefore, the nail piece 41a has a height between it and the hanging piece 41 in the vertical direction. It has play and locks the upper plate 36.

The pressing plate 42 is urged upward by a con-shaped spring 48 disposed between it and the lower plate 37, and when the pressing plate 42 is pulled up by the spring 48, the upper plate 36 is pulled up by the claw. The gap between the air hole 40 and the hanging piece 41 lifted by the piece 41a and brought into contact with the stepped portion 39 of the upper plate 36 allows the interior of the bellows 35 to be conducted to the outside air. Further, by pressing down the push plate 42, the closing plate 43 closes the air hole 40, lowering the upper plate 36 and compressing the bellows 35, so that the air pump 5 sends pressurized air to the air guide hole 45 in the center of the lower plate 37. It can be discharged from Further, on the lower peripheral wall of the lower cylinder 33b, there is a pumping pipe 6 that communicates with the discharge pipe 7 that is force-fitted to the outer surface of the lower peripheral wall.
A hole 49 is formed in which the upper end of the hole 49 is fixed. The pumping pipe 6 is inserted with a gap into a central through hole 60 of a heat insulating lid 59 fitted to the upper cylinder part 27 of the shoulder member 3, and its lower end is connected to the bottom of the container 2. Located nearby.

Note that an annular bottom member 53 is force-fitted into the small diameter portion 21 at the lower end of the container 2 in the same manner as the shoulder member 3, and the protruding portion 54 of the bottom member 53 facing inward on the lower surface of the container 2 is connected to the base plate 56. It is engaged in a U-shaped groove provided in the holder so as to be freely rotatable. Note that the container 2 has a shoulder member 3.
and the bottom member 53 are exposed, and the heat insulating container 1
It forms the outer periphery of the case.

[Effect]

However, by pushing down the push plate 42, the upper plate 3
By compressing the bellows 35 while the closing plate 43 of 6 closes the air hole 40, the air pump 5 sends air from the air guide hole 45 into the inside of the container 2, and pressurizes the liquid. , liquid can be poured out from the discharge pipe 7 to the outside. Also, the plug body 9 is the shoulder member 3
Since the container 2 is engaged with the threaded portion 4 which can be formed with relatively high precision, the container 2 can be reliably and airtightly closed.
Prevent air leakage.

Furthermore, the plug body 9 includes an air pump 5, a pumping pipe 6,
A spouting tool 8 consisting of a discharge pipe 7 is incorporated, and as a result, it can be easily attached and detached in one piece, improving operability.
The shoulder member 3 or the bottom member 53 protects the corners of the container 2, such as the shoulders and bottom, from impact, while exposing the body of the container 2, so that the appearance can be improved by the ground color of the stainless steel plate.

FIG. 2 shows another embodiment of the invention.

The one shown in FIG. 2 has an upper cylindrical portion 2
A lid body 59 that is press-fitted into the upper cylinder part 7 is integrally provided, and has a hole part 63 that communicates with the air introduction hole 45 and an insertion part into the upper cylinder part 27 and a part that passes through the upper surface of the upper cylinder part 27 and connects to the base cylinder. A cover body 65 having a fitting portion fixed to the inner surface of the cover body 33 is fixed in contact with the lower plate 37 at its upper end, and a heat insulating material 57 is filled inside the cover body 65 . Note that in the lid body 59, the pumping pipe 6 passes through the cover body 65 and the heat insulating material 57. In this embodiment, the lid body 59 can be removed at the same time by attaching and detaching the container 2, thereby further improving the heat retention properties of the container 2 and its operability.

[Effect of idea]

As mentioned above, in the heat-insulating container of the present invention, since the stopper is screwed onto the shoulder member, the molding can be simplified and the accuracy of the thread can be improved compared to when the container itself has a threaded part directly. The attachment and detachment operations of the body can be made smoother, and the gap between the stopper and the inside of the container can be reliably made airtight based on the improved screwing precision. Furthermore, the base cylinder of the plug body consists of a lower cylinder and an upper cylinder fixed to the upper end of the lower cylinder, and the upper cylinder forms a stepped part, and the lower cylinder integrally forms a lower plate that receives the lower part of the bellows of the air pump. As a result, the upward movement of the upper plate can be easily controlled, and the structure of the plug body can be simplified, and it can be attached to the shoulder member by the base cylinder. Since the respective peripheral edges are guided by the inner wall surface, together with the provision of the stepped portion, the operation of the pawl pieces is smooth, making it possible to easily operate the air pump and to reduce accidents caused by malfunction of the air pump.

The heat insulating container of the present invention can also be used as a small-diameter, so-called stationary or portable heat insulating container, and can be modified in various ways, such as by installing a fall prevention valve on the pumping pipe to prevent leakage in the event of a fall. can.

FIG. 3 shows a structure in which a separate lower plate 37 is attached to the base body 33 through grooves 44, and a bottom cap 50 having a valve body 51 is attached to the lower end by a boss 46 provided on the lower surface of the lower plate 37. A heat-insulating container is disclosed in which a cylindrical body 10 is suspended, and the lower end of the cylindrical body 10 is inserted into a recess 25 on the lower surface of the container 2.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention. Second
The figure is a partial end view showing another embodiment, and FIG. 3 is a sectional view showing another heat insulating container. 2...Container, 3...Shoulder member, 4...Threaded part, 5
... Air pump, 6 ... Pumping pipe, 7 ... Discharge pipe, 8 ... Pour tool, 9 ... Plug body, 12 ... Outer cylinder,
13... Inner cylinder, 16... Opening, 33... Base cylinder,
33a... Upper tube part, 33b... Lower tube, 33... Step part, 35... Bellows, 36... Upper plate, 37...
...Lower plate, 39...Step, 40...Air hole, 41
...Descent piece, 41a...Claw piece, 48...Spring.

Claims (1)

[Scope of utility model registration request] A shoulder member 3 surrounding the opening at the upper end of the container 2 is attached to the container 2, and a lower cylinder 33b is screwed onto the shoulder member and has a lower plate 37 integrally formed therein, and a lower cylinder 33b is screwed onto the upper end of the lower cylinder 33b. The plug body 9, which includes a base cylinder 33 having an upper cylinder 33a which forms a downward stepped portion 39 projecting inward by being screwed, is attached to the shoulder member 3 by the screwing, while the upper cylinder 33a The spring 4 moves up and down with its periphery guided by the inner wall surface of the spring 4, and a claw piece 41a is integrally formed on the lower surface via a hanging piece 41, and the spring 4 is disposed between the lower plate 37 and the lower plate 37.
8, and an air hole 40 whose periphery is guided by the inner wall surface of the lower cylinder 33b and into which the hanging piece 41 is inserted with a gap, and which is engaged by a claw piece 41a. an upper plate 36 which is urged upward by the push plate 42 when stopped, has vertical play between it and the hanging piece 41, and whose upward movement is restricted by the stepped portion 39;
An air pump 5 is provided on the stopper 9, and includes a bellows 35 whose lower end is received by the lower plate 37 and whose upper end is received by the upper plate 36, and which can pressurize the inside of the container 2 by pressing down the push plate 42. A heat-retaining container featuring: