JPS6346053Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a liquid container such as a metal thermos flask or a general thermos flask which has a vacuum double glass bottle inside and whose mouth is closed with a stopper.

(Prior art) The mouth of the medium bottle is closed by screwing the stopper into the spout of the container, and the mouth of the medium bottle is opened by unscrewing the stopper, and the spout and the stopper are connected. Liquid containers that pour out the liquid in a medium bottle from the side circumferential surface through a gap are widely used. As shown in FIG. 10, the stopper is known to have a liquid guide groove b on the side circumferential surface a of the stopper, and to guide the liquid to the outside through the liquid guide groove b. However, in this conventional example, the liquid guide groove b is formed so that its tip c reaches the flange-shaped head d, which tends to cause turbulent flow when pouring liquid, and the width of the flow also increases. There is a problem that the direction of the liquid is difficult to determine, and the liquid injection operation cannot be carried out smoothly. This is thought to be due to the fact that the liquid flow directly hits the flange-shaped head d and suddenly changes direction, as shown by the arrow in FIG.

(Purpose of the invention) The present invention solves the above-mentioned problems of the conventional method, and creates a liquid that can flow out smoothly without causing turbulence during injection, and that can maintain the best direction of flow. The purpose is to provide a closure for a container.

(Structure of the invention) In order to achieve the above-mentioned object, the present invention provides a stopper A to the spout 26 of the container, as exemplified in the illustrated embodiment.
are screwed together to close the mouth part 3 of the medium bottle 2, and by loosening the screws of the stopper A, the mouth part 3 of the medium bottle 2 is opened, and the side peripheral surface is passed between the spout part 26 and the stopper A. 4 to medium bottle 2
In a liquid container from which liquid is poured out, a spout 2
6 and the male screw 5 of the stopper A that is screwed thereto are discontinuous, and the non-threaded parts 6 and 29 that are continuous in the axial direction of the container are connected to the inner periphery 27 of the spout 26 and the stopper A. A liquid guide groove 8 is formed on the side periphery, and reaches the non-threaded part 6 of the side periphery 4 of the stopper A to a position where the tip 7 faces the non-threaded part 29 on the inner periphery of the spout 26 when the stopper is opened. is provided in the axial direction of the plug A, and the tip 7 of the liquid guide groove 8 is formed as a liquid guide surface 7a that gradually rises toward the upper end side and side circumference of the plug A.

(Embodiment) The embodiment shown in FIGS. 1 to 4 relates to a portable metal thermos flask. The container body 1 of the thermos flask is composed of a vacuum double container 9 made of stainless steel, a shoulder member 10 made of synthetic resin, a bottom member made of synthetic resin (not shown), and the like. Vacuum double container 9
The inner part constitutes the medium bottle 2, and the outer part constitutes the outer package 11.
It consists of

A ring-shaped fitting 13 is attached to an appropriate position on the outer periphery of the small diameter portion 12 at the upper end of the vacuum double container 9 by spot welding. The skirt portion of the mounting fitting 13 opens outward to form an engaged portion 14. Further, as shown in FIG. 4, a rotation preventing portion 15 is formed at a suitable position on the mounting bracket 13, and is comprised of a pair of left and right cut-out portions 15a, 15a and a slit portion 15b in between.

The shoulder member 10 is formed as shown in FIG. 1 and FIG.
7... are formed, and when the shoulder member 10 is forcefully fitted (forcibly fitted) into the vacuum double container 9 as shown in FIG. 1, these hook-shaped engaging portions 17, 17... It is configured to engage with the engaged portions 14 of 13. Further, the inner cylindrical portion 16 is provided with a detent protrusion 18 that engages with the detent portion 15,
By engaging the two members 15 and 18 during the forcible fitting, rotation of the shoulder member 10 with respect to the vacuum double container 9 is prevented. In addition, 19
is a ring-shaped packing with cushioning properties.

The lower end of the outer cylindrical portion 20 of the shoulder member 10 is formed to have a maximum diameter, and a pair of left and right suspension string locking portions 23 for hooking both ends of the suspension cord 22 to the maximum diameter portion 21,
There are 23. Further, the outer cylindrical portion 20 is provided with a male screw 24, into which a stopper 25 is removably screwed.

The shoulder member 10 has a taper-shaped spout 26 at its upper end, and this spout 26
The support cylinder part 27 with the smallest diameter that hangs downward from the inner circumference of the
A female thread 28 for screwing the stopper A is formed in the holder. As shown in FIG. 2, this female thread 28 is formed in a discontinuous state, and its non-threaded portion 29 is continuous in the axial direction of the container body 1.

The lower end of the mouth portion 3 of the medium bottle 2 is squeezed to form a throat portion 30.

The medium bottle 2 is screwed into the female thread 28 of the shoulder member 10.
As shown in FIGS. 1 and 2, the plug A that closes the mouth 3 of the body includes a flange-shaped head 31, a body 32 having a male thread 5 (described later) on the side circumferential surface 4, and an O-ring 33.
It consists of a lower end small diameter portion 34 fitted with a. The plug body A is formed by inserting a heat insulating material 36 into a shell body 35 made of synthetic resin.

The shoulder member 10 is provided on the side circumferential surface 4 of the body portion 32.
A discontinuous male screw 5 is formed which is screwed into the female screw 28 of the . The non-threaded portions 6, 6 of the male thread 5 are formed at two mutually symmetrical locations in the circumferential direction, and are continuous in the axial direction of the plug body A, respectively. A pair of liquid guide grooves 8, 8 are provided on the side circumferential surface 4 of the body 32 in the axial direction of the stopper A, the tips 7, 7 of which reach halfway into the non-threaded portion 6. The liquid guide groove 8 of this embodiment is formed to have a predetermined width, and its lower end 37 reaches the lower end of the body 32 and is open. Also, the bottom surface 38 is the lower end small diameter portion 3.
It is formed to be flush with 4. Further, the tips 7, 7 are formed in a semicircular shape and are formed into a tapered surface 7a as shown in FIGS. 1 and 3.

Thus, when the stopper A is closed as shown in FIG. 1, the O-ring 33 of the stopper A comes into close contact with the throat portion 30 of the medium bottle 2, and the mouth portion 3 of the medium bottle 2 is closed. On the other hand, when the stopper A is unscrewed and the threading is loosened, the O-ring 33 is separated from the throat portion 30 and liquid can be injected. and the side circumferential surface 4 of the plug body A.
The non-threaded portion 6 formed in and the non-threaded portion 2 of the shoulder member 10
9 and tilt the thermos flask, as shown in FIG. 3, the liquid in the medium bottle 2 is guided to the liquid guide groove 8 and poured out to the outside. As shown by the arrow in FIG. 3, the liquid whose flow direction has changed at the tip 7 of the liquid guide groove 8 hits the vicinity of the outer periphery of the flange-shaped head 31 at a gentle angle, and then the flow direction changes. The liquid is poured out along this line without sudden changes, and the width of the flow is adjusted by the liquid guide groove 8, preventing turbulence and widening the width of the flow. will be prevented.

The liquid guide groove 8 can be configured in various ways other than those shown in the above embodiments. In the one shown in FIG. 5, the tip 7 is formed into a triangular shape. 6th
In the illustrated example, a rectifying plate 40 is provided within the liquid guide groove 8 to further regulate the flow of the liquid. In the device shown in FIG. 7, the width of the liquid guide groove 8 is gradually narrowed toward the tip 7, thereby restricting the flow of liquid. The one shown in FIG. 8 is provided with partitioning ribs 39, 39 that prevent the liquid from flowing in the direction shown by the arrow into the liquid guide groove 8, and regulates the flow rate in the liquid guide groove 8. It has been arranged. What is shown in Figure 9 is 1
The pair of partitioning ribs 39, 39 are connected to the tip small diameter portion 3.
8, and is constructed to have the same effect as that shown in FIG. 8.

The present invention can be configured in various ways other than those shown in the above embodiments. For example, in the above embodiment, the shoulder member 10 is provided with the non-threaded portion 29, and the non-threaded portion 6 of the stopper A is made to match this, thereby forming a liquid path communicating with the liquid guide groove 8. Part 10
By forming the tooth height of the female thread 28 provided on the stopper A to be higher than the tooth height of the male thread 5 provided on the plug body A, the gap created by the difference in tooth height is used as a liquid path communicating with the liquid guide groove 8. It is possible to do this. Further, in the above embodiment, the stopper A is screwed into the female thread 28 of the shoulder member 10 to close the mouth 3 of the medium bottle 2, but the container body 1 other than the shoulder member 10 is configured. For example, the internal thread 28 can be formed in the upper small diameter part 12 of the vacuum double container 9, and the stopper A can be screwed into the internal thread 28. Further, although the above embodiment relates to a portable metal thermos flask, the present invention can be applied to other types of liquid containers such as a general thermos flask equipped with a vacuum double glass bottle.

(Effect of the invention) The present invention has the above-mentioned configuration, and reaches the opposing positions of the non-threaded parts that are formed continuously in the axial direction of the container on the inner periphery of the spout of the container and the side periphery of the stopper. Since the liquid guide groove is provided in the non-threaded part of the stopper, the flow of liquid flowing through the liquid guide groove is adjusted, and
Since the flow is gradually constricted from the mouth of the medium bottle to the spout, the momentum of the liquid flow can be kept constant, and turbulent flow and pulsating flow can be avoided. Moreover, since a liquid guide surface is formed at the tip of the liquid guide groove that gradually rises toward the upstream side and the side circumference, the liquid flow can be prevented from directly hitting the flange-shaped head of the stopper. , it is possible to smoothly turn to the outflow direction.

Therefore, the liquid can flow out smoothly while maintaining the best outflow direction, and as a result, the liquid injection operation can be carried out smoothly.

[Brief explanation of the drawing]

Fig. 1 is a vertical sectional front view of an embodiment of the present invention, Fig. 2 is a perspective view of its main parts, Fig. 3 is a front view showing its operation, Fig. 4 is a perspective view showing a part of the container body, 5, 6 and 7 are front views showing other embodiments of the present invention, FIGS. 8 and 9 are perspective views showing still further embodiments of the present invention, and FIG. 10 FIG. 2 is a front view illustrating the operation of a conventional example. 1...Container body, 2...Medium bottle, 3...Mouth, 4
... Side peripheral surface, 5 ... Male thread, 6 ... Non-threaded part, 7
... Tip, 7a ... Tapered surface (liquid guide surface), 8
. . . Liquid guide groove, 26 . . . Spout portion, 27 .

Claims (1)

[Scope of Claim for Utility Model Registration] The mouth of the medium bottle is closed by screwing the stopper to the spout of the container, and the mouth of the medium bottle is opened by loosening the screw of the stopper and the spout is closed. In a liquid container that pours out the liquid in the medium bottle from the side circumferential surface through the gap between the spout and the stopper, the female thread of the spout and the male thread of the stopper that is screwed into the spout are made discontinuous so that the liquid can flow in the axial direction of the container. A non-threaded part is formed on the inner periphery of the spout and the side periphery of the stopper, and the tip of the non-threaded part on the side periphery of the stopper connects to the non-threaded part on the inner periphery of the spout when the stopper is opened. A liquid guide groove is provided in the axial direction of the stopper, and the tip of the liquid guide groove is formed as a liquid guide surface that gradually rises toward the upper end and side circumference of the stopper. container.