JPH0117226Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial field of application> The present invention is based on the mouth of a metal bottomed cylindrical inner container.
A shoulder member is provided to cover the outer peripheral wall of the mouth from the upper end of the mouth of the inner container, and the upper end of a bottomed cylindrical outer case that covers the trunk and bottom of the inner container is attached to the lower end of the shoulder member. This invention relates to a liquid heat-insulating container in which an inner container is covered with an outer case.

<Prior Art> In this type of liquid heat-insulating container, the inner container is pushed up toward the shoulder member, the inner container is firmly held between the outer case and the shoulder member, and the shoulder member and the contents are held firmly together. It is important to avoid creating a gap between the mouth of the container and the mouth.

Conventionally, the shoulder member and the outer case are integrally molded, and after covering the mouth of the inner container, a filler is injected into the bottom of the inner container and the bottom plate is joined to the lower end of the outer case. Instead of a filler, a coil spring is placed on the bottom plate, and this bottom plate is screwed into the lower end of the outer case to push the inner container upward.

<Problem to be solved by the invention> However, with the former method, it is difficult to inject the filler, and moreover, the injected filler diffuses into the peripheral wall of the outer case and is not pushed up during injection. When the inner container is lowered immediately, a gap is created between the shoulder member and the mouth of the inner container, resulting in poor water leakage, and the assembly work is extremely complicated, resulting in high costs. On the other hand, in the latter case, since the thing that pushes up the inner container is a coil spring, it is difficult to stabilize the posture, and the center of the coil spring pushing up the inner container tends to deviate from the center of the inner container. It is difficult to make uniform contact between the outer peripheral wall of the mouth of the inner container over its entire circumference, and furthermore, when the bottom plate is screwed into the outer case, this coil spring rotates and its upper end touches the bottom of the inner container. There was a flaw that hurt me. In addition, the bottom plate of the outer case tends to bulge outward due to the elastic force of the coil spring, resulting in the disadvantage that the standing posture of the liquid heat insulating container tends to become unstable.

The present invention has been developed in view of the above-mentioned circumstances, and is capable of uniformly and reliably abutting the shoulder member to the outer periphery of the mouth of the inner container over the entire circumference,
Moreover, it is an object of the present invention to provide a liquid heat-insulating container that has an upper edge that does not cause damage to the bottom of the inner container and can stabilize the standing posture of the container.

<Means for Solving the Problems> The structure of the present invention for achieving the above object will be explained based on FIGS. 1 to 3 corresponding to the embodiments. An annular recess is formed in the center of the bottom surface of the inner container, and a shoulder member is provided at the mouth of the inner container to cover the outer peripheral wall of the mouth from the upper end of the mouth of the inner container, and a bottomed cylinder that covers the body and the bottom of the inner container. The upper end of the shaped outer case is attached to the lower end of the shoulder member, and the bottom plate of the outer case is bulged inward, and a recess in the bottom of the inner container is formed in the center of the inner surface of the bottom plate. An annular rib having a diameter slightly smaller than the vertical dimension of the recess and fitting into the recess is provided protrudingly, and further, the vertical dimension of the center is larger than the vertical dimension of the recess, and the central upper surface is smaller than the vertical dimension of the recess. A leaf spring is provided that contacts the bottom of the recess, and when the outer case is connected to the shoulder member surrounding the inner container, the outer peripheral end of the leaf spring between the recess and the annular rib is in contact with the inner peripheral end of the annular rib. It is something that came into contact with.

<Function> The leaf spring of the liquid heat insulating container configured as above has its outer peripheral end in contact with the inner peripheral end of the annular rib and is surrounded by the entire circumference, so that the left and right sides of the leaf spring itself are No wobbling or movement occurs, and the desired pinching position is maintained correctly. The fit between the annular rib and the recess allows the centering of the inner container and leaf spring to be performed correctly, so the center of the inner container can be correctly aligned with the leaf spring than with conventional fillers or coil springs. The shoulder member can be pushed up, and the shoulder member and the outer periphery of the mouth of the inner container can be uniformly and reliably brought into contact over the entire periphery. In addition, since the bottom plate of the front outer case bulges inward, the bottom plate is prevented from bulging outward due to the elastic force of the leaf spring, and the standing posture of the liquid heat insulating container is stabilized. achieved.

<Example> Hereinafter, an example of the present invention will be described based on the drawings. The liquid heat-insulating container 1 includes a vacuum double inner container 2 made of metal such as stainless steel, a shoulder member 3 attached to the mouth of the inner container, and an outer case 4 that covers the body and bottom of the inner container.
, an inner stopper 5, and a lid body 6.

The inner container 2 consists of an inner wall 7 and an outer wall 8 made of metal such as stainless steel, and a vacuum is maintained between the inner wall 7 and the outer wall 8. A female screw 9 for an inner plug is carved into the opening of the inner wall 7 of the inner container 2.
An annular projection 10 is provided on the inner periphery of the lower end.

2 and 3 in the center of the bottom of the outer wall 8 of the inner container.
As shown in the figure, a circular recess 11 is provided. A shoulder member 3 is attached to the outer periphery of the mouth of the outer wall 8 of the inner container 2, and this shoulder member 3 has an opening in the center and has a female screw thread for a lid body on the outer periphery of the lower end to which a lid body 6, which will be described later, can be attached and detached. 12 is engraved.

Reference numeral 13 denotes a seal gasket interposed between the central opening peripheral wall of the shoulder member and the mouth of the inner container.

The outer case 4 is formed into a cylindrical shape with a bottom, and its bottom plate is slightly bulged inward of the outer case so that its arching action prevents the bottom plate from bulging outward. It's summery. The upper end of this outer case 4 is force-fitted or attached to the lower end of the shoulder member. As shown in FIGS. 2 and 3, a recess 1 in the bottom of the inner container 2 is located inside the center of the bottom of the outer case.
An annular rib 14 is provided in a protruding manner and has a diameter smaller than 1 and a vertical dimension smaller than the so-called vertical dimension of the recess, which is shallower than the depth of the recess. This annular rib 1
4 and the recess 11 is a plate spring 15 made of metal such as stainless steel. This leaf spring 15 is
The vertical dimension of the center is larger than the vertical dimension of each of the annular rib and the recess, and the annular rib does not separate from the recess when the annular rib and the recess are in a fitted state, and the fitted state of both is maintained. It is formed in a hat shape with a set umbrella part 16 and a flange part 17 that is slightly smaller than the inner peripheral diameter of the annular rib.
When the inner container 2 and the outer case 4 are assembled, the outer peripheral end of the flange 17 is in contact with the inner peripheral end of the annular rib 14, and the upper end of the umbrella part 16 is in contact with the center of the recess 11.

The inner stopper 5 has a male thread 18 on the outer periphery of the lower part, and has an annular gasket attached to the lower end that comes into contact with the protrusion 10 of the inner container 2. The inner stopper 5 is inserted through the central opening of the shoulder member 3 and inserted into the inner container. It is screwed onto a female screw 9 for a stopper. The lid 6 is formed into a cylindrical shape with a bottom, and has a male screw 1 on the inner periphery of the upper portion that is screwed into the female screw 12 for the lid of the shoulder member 3.
9, and the lid body is screwed onto the shoulder member in an inverted position.

20 is a tip.

<Effects of the invention> In the present invention, the center of the leaf spring contacts the center of the inner container and pushes up the inner container evenly.
No gap is formed around the shoulder member and the outer periphery of the mouth of the inner container, and water leakage does not occur. In addition, since the outer periphery of the leaf spring is brought into contact with the inner periphery of the annular rib of the outer case when the outer case is attached to the shoulder member surrounding the inner container, conventional filling materials or It is much easier to assemble and lower costs than the one in which the leaf spring is screwed into the outer case, and the cost is reduced.In addition, the leaf spring and the bottom of the inner container make one-point contact at the center of each, and the bottom of the inner container There are no flaws that could damage it.

Moreover, since the bottom plate of the outer case is bulged inward, the bottom plate is prevented from bulging outward due to the elastic force of the leaf spring, and the liquid heat insulating container can stand upright. Postural stabilization is achieved.

[Brief explanation of the drawing]

Figure 1 is a front view of the embodiment of the invention, Figure 2 is
FIG. 3 is a partially cut away exploded perspective view showing the main parts of the embodiment of the present invention. DESCRIPTION OF SYMBOLS 1...Liquid thermal insulation container, 2...Inner container, 3...Shoulder member, 4...Outer case, 5...Inner stopper, 6...Lid body, 7...Inner wall, 8...Outer wall, 10... protrusion, 1
1... recess, 13... seal packing, 14...
Annular rib, 15...Plate spring, 16...Umbrella part, 17
...Tsubabe, 20...Kopu.

Claims (1)

[Scope of utility model registration request] An annular recess is formed in the center of the bottom surface of the inner container, which is a metal bottomed cylindrical container, and a shoulder member is provided at the mouth of the inner container to cover the outer circumferential wall of the mouth from the upper end of the mouth of the inner container, and a body of the inner container is provided. The upper end of a bottomed cylindrical outer case that covers the and the bottom part is attached to the lower end of the shoulder member, and the bottom plate of the outer case bulges inwardly, and the center part of the inner surface of the bottom plate is attached to the lower end of the shoulder member. an annular rib having a diameter slightly smaller than that of the recess on the bottom surface of the inner container, smaller than the vertical dimension of the recess, and fitting into the recess, and further having a center vertical dimension smaller than the vertical dimension of the recess; A large leaf spring is provided whose central upper surface abuts the bottom surface of the recess, and when the outer case is connected to the shoulder member surrounding the inner container, the outer peripheral end of the leaf spring between the recess and the annular rib is annular. A liquid heat-insulating container characterized by being in contact with the inner peripheral edge of a rib.