JPH10236512A - Heat-resistant cap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a synthetic resin heat-resistive cap composed of an inner stopper and an outer cap that is mounted to a container containing heated liquid and capable of preventing tepid water of washing shower from being sucked into the inside through a gap of the outer cap because of negative pressure produced by sudden cooling when the exterior of the container is washed by shower of tepid water. SOLUTION: An inner stopper 4 and an outer cap 5 are formed of synthetic resin, and a troughlike receiving part 13 is formed integrally or separately of a holding part 11 to be held by an engaging part 10 of the outer cap 5 when the outer cap is closed and an inner ring part 12 provided at the inside of the holding part 11 at the upside of an upper wall 3 of the inner stopper 4, and the front end part 14 of a middle leg 15 provided at the inner face of the outer cap 5 is pressed against and received by the receiving part 13 and the tail end part 16 of a pouring tube 6 of the inner stopper 4 is pressed against the inner face of the outer cap 5 when the outer cap 5 is closed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat-resistant cap to be attached to a container, such as sake, juice or noodle soup, when the container is heated to a high temperature when filling the container. It is.

[0002]

2. Description of the Related Art FIG.
The following is used. This cap has a polyethylene inner lid 51 and a polypropylene outer lid 52.
The inner lid 51 has a mounting portion 55 to be mounted on the mouth portion 54 of the bottle 53, and a liquid blocking wall 56 inside the mounting portion 55. An endless groove 57 is formed in the blocking wall 56. Reference numeral 58 denotes a tearing member. Numeral 59 denotes a injection cylinder, and numeral 60 denotes a cylinder to be attached to the mounting portion 55 of the inner lid 51.
Is provided with a locking portion 62. A lid 63 is provided integrally with the cylindrical body 60 by a hinge 64. 6
5 is a hook formed inside the lid 63,
When the shutter 3 is closed, it is engaged with the locking portion 62.

As an example, when filling the bottle 53 with noodle soup, it is heated to 70 ° C. to 90 ° C. for sterilization.
After filling, the cap is stoppered and shipped. In this case, the content liquid may adhere to the outer surface of the container or the like during filling, and if shipped as it is, mold will be generated on the surface of the container, which is unsanitary and lowers the commercial value. In order to prevent this, after the tapping, slightly warm water of about 30 ° C. is applied in a shower form from above the cap to wash off the deposits. In addition, the shower using the slightly warm water has the following reasons in addition to the above. If the liquid product such as noodle soup is left at a high temperature of 90 ° C. or the like as described above, the quality may be deteriorated, and the high temperature may cause deformation of the attached cap and decrease the sealing force. This is because there is a fear of. The above-mentioned shower is performed to solve these problems. However, a problem arises at this time.

[0004] To describe this, as described above, the bottle 5
When the noodle soup 3 is filled with noodle soup at 70 ° C. to 90 ° C. and the cap is plugged, the heat of the noodle soup heats and expands the air in the spaces 67 and 68 in the figure of the cap. Next, since the shower cleaning is performed as described above, and the air is rapidly cooled by the shower cleaning, the air in the spaces 67 and 68 is cooled, and at this time, the air is in a negative pressure state. For this reason, the water of the shower is sucked, and a water drop 69 adheres to the space 68 as shown in the figure. In addition, this is because the shower water is not sucked if the locking portion 62 and the locking portion 65 are firmly locked. However, in such a case, it is difficult for the consumer or the like to open the shower water, so the hardening is difficult. You can't. And this water drop 69 is a long time space 6
8, the water droplets 69 become moldy, become unsanitary, and reduce the commercial value.

The applicant of the present invention has previously filed and disclosed an invention of a heat-resistant cap which solves the above-mentioned problems (Japanese Patent Laid-Open No. 8-53152). Since the present invention further improves the heat-resistant cap disclosed and disclosed above, the heat-resistant cap disclosed and disclosed above will be described first. Although the heat-resistant cap disclosed and disclosed in the above application was configured as shown in FIG. 4, many parts shown in FIG. 4 have the same configuration as the conventional heat-resistant cap shown in FIG. In the drawings, the same parts with the same reference numerals have the same names and have the same functions. Therefore, to avoid duplication, the description of the same reference numerals will be omitted, and different parts will be described. . In FIG. 4, an inclined portion 70 having a larger diameter as it goes upward is formed inside the locking portion 62, and reference numeral 71 denotes a short tubular middle foot provided on the inner surface of the lid 63. Reference numeral 72 denotes the injection cylinder 5 provided on the inner surface of the lid 63.
9 shows small and medium feet close to the inner surface. Then, the lid 63 is closed, and the locking portion 65 of the lid 63 is
, The middle foot 71 comes into close contact with the inclined portion 70 inside the locking portion 62, and the small middle foot 72 also comes into close contact with the injection cylinder 59. For this reason, 70 ° C to 90 ° C
Into a heated noodle soup, and put the heat-resistant cap on the mouth 8
4, the space 67, 68, 69 in the figure is rapidly cooled from a heated state to a negative pressure state when a shower of slightly warm water can be taken from the outside. Therefore, the outermost space 6
9 tries to suck the slightly warm water of the shower. However, since the space 69 is provided with the middle foot 71, the space 69 is formed to be much smaller than the conventional space 68 shown in FIG. 3 and is hermetically closed. Therefore, the decompression by the shower is very small. Thus, the suction of hot water in the shower has been greatly improved.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a heat-resistant cap which can further improve the heat-resistant cap disclosed and disclosed in the above-mentioned application, and can almost eliminate the fear of sucking the slightly warm water of the shower.

[0007]

The heat-resistant cap of the present invention which achieves the above object will be described below.
Inner cylinder 2, inner plug 4 made of synthetic resin having upper wall 3; Injection cylinder 6, which is formed on the upper wall 3, and closely attached to the inside of an outer lid 5 described later; formed on the upper wall 3 in the injection cylinder 6. Tearing member 9 provided on a tearing portion 8 constituted by the split fissure 7; an outer lid 5 attached to the inner plug 4; an outer cover 5 provided integrally or separately on the upper portion of the inner plug 4. A locking portion 11 for locking with the engaging portion 10 of the outer lid 5 when the lid 5 is closed; an inner portion provided integrally with the locking portion 11 and protruding upward inside the locking portion 11; A valley-shaped receiving portion 13 formed by an annular portion 12 and having a width that becomes narrower downward; an annular portion provided inside the outer lid 5 and having a tip portion 14 pressed closely into the receiving portion 13; Middle leg 1
5; a heat-resistant cap comprising:

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention is as follows. A synthetic resin inner plug 4 having an outer cylinder 1, an inner cylinder 2, and an upper wall 3; a filling cylinder 6 formed on the upper wall 3, which is in close contact with the inside of an outer lid 5, which will be described later; A tearing member 9 provided on a tearing portion 8 formed by a tearing groove 7 formed in the upper wall 3 of
An outer lid 5 attached to the inner plug 4 and an engaging portion 10 of the outer lid 5 when the outer lid 5 is integrally or separately provided on the inner plug 4 when the outer lid 5 is closed. A valley-shaped receiving portion having a width that becomes narrower downward, formed by a locking portion 11 and an inner ring portion 12 provided integrally with the locking portion 11 and protruding upward inside the locking portion 11. 13, a heat-resistant cap comprising: a ring-shaped middle foot 15 provided inside the outer lid 5 and having a distal end portion 14 which is press-fitted in close contact with the receiving portion 13. With this configuration, the middle foot 1
When the outer cover 5 is closed, the press-fit portion 5 is press-fitted into the receiving portion 13 formed by the locking portion 11 and the inner ring portion 12 which lock the outer cover 5, so that the press-fit portion is securely and sufficiently sealed. Since the receiving portion 13 is close to the outer lid 5, the space formed by the middle foot 15 and the outer lid 5 is small.
Therefore, the negative pressure generated in the space can be extremely reduced, and the influence of the negative pressure of the chamber on the tearing portion 8 can be reliably prevented. Thus, the middle foot 15, the outer lid 5, and the receiving portion 1
3 can almost eliminate the possibility of shower water entering.

The end portion 16 of the injection tube 6 is bent outward to form a trumpet shape. With such a configuration, the injection cylinder 6 is configured to exhibit elasticity in the vertical direction. When the outer lid 5 is closed by this elasticity, the inner surfaces of the injection cylinder 6 and the outer lid 5 are formed. And receiving part 13 and middle foot 1
5 can be strengthened in the vertical direction, so that the sealing performance can be enhanced, the influence of the negative pressure of the inner chamber on the space outside the middle foot 15 can be prevented, and the infiltration of shower water can be almost eliminated. Can be.

An annular concave receiving portion 17 is formed on the inner surface of the outer lid 5, and the distal end portion 16 of the injection tube 6 is formed so as to enter the receiving portion 17 when the outer lid 5 is closed. ing. Thereby, the distal end portion 16 of the injection tube 6 receives a vertical force when the outer lid 5 is closed, and can enhance the sealing.

The outer lid 5 is provided integrally with the inner plug 4 by a hinge 18. With this configuration, when the outer lid 5 is closed, the middle foot 15 is connected to the receiving portion 13.
Furthermore, even if the middle cylinder 6 is closed unconsciously in the annular concave portion 17, it can be securely inserted.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIGS. 1 and 2, reference numeral 4 denotes an inner plug made of a synthetic resin, which is made of, for example, polyethylene, polypropylene or other suitable synthetic resin. The inner plug 4 has an outer cylinder 1, an inner cylinder 2, and an upper wall 3 as shown in the figure. Reference numeral 6 denotes a filling cylinder.
Is formed so as to be in close contact with the inside of the outer lid 5 described later. Reference numeral 7 denotes an endless fissure formed in the upper wall 3, which forms a tearing portion 8 inside the fissure. Reference numeral 9 denotes a pull-ring-shaped tearing member provided at the upper end of the tearing portion 8. Next, 5 is an outer lid, which is formed so as to be mounted on the inner plug 4. The outer lid 5 is formed integrally with the inner plug 4 by a hinge 18 in the drawing,
In addition, although not shown, it may be formed separately from the inner plug 4, and may be configured to be screwed to the inner plug 4, or may be configured to be engaged. Or Figure 2
As shown in (2), the pressure contact tube 28 fitted to the outer tube 1 by pressure contact may be provided by a hinge connection, a screw connection, an engagement portion, or the like. The components shown in FIG. Reference numeral 29 denotes an upper part of the pressure contact cylinder 28,
An annular wall formed annularly on the inside, and a hook portion 31 that hooks on an annular hook portion 30 provided on the upper wall 3 of the inner plug 4 is provided at an inner end of the ring wall 29. Have been.

In FIG. 1, reference numeral 11 denotes a locking portion which locks with the engaging portion 10 of the outer lid 5 provided on the upper wall 3 or the annular wall 29 of the press-contact tube 28. At this time, the outer lid 5 is engaged with a protruding engagement portion 10 formed on the inner surface of the outer lid 5. An inner ring portion 12 is formed on the inner side corresponding to the locking portion 11 so as to protrude upward.
The inner ring portion 12 and the locking portion 11 form a valley-shaped receiving portion 13 which becomes narrower downward. This receiving part 13
When the outer lid 5 is closed, the annular middle foot 15 provided on the inner surface of the outer lid 5 is pressed and received. 20 is a small space, and by forming this small space 20,
The press contact between the middle foot 15 and the receiving portion 13 can be increased by further press-fitting than the first press contact. Reference numeral 14 denotes the tip of the middle foot 15.

Next, the end portion 16 of the injection tube 6 is bent outward to form a trumpet shape as shown in the figure. Further, the distal end portion 16 is formed to be thinner than the proximal end portion 21, so that the distal end portion 16 exhibits elasticity against a vertical force. As shown in the figure, when the outer lid 5 is closed, the distal end 16 of the injection tube 6 is housed by being pressed against an annular concave receiving portion 17 formed on the inner surface of the outer lid 5. ing.
More specifically, the housing 17 is provided with an annular inner protrusion 22.
And the outer projection 23, and when the outer lid 5 is closed, the inner projection 22
Is pressed against the inner surface of the distal end portion 16, and the outer projection 23 is pressed against the distal end of the distal end portion 16. That is, when the outer lid 5 is closed because the trumpet-shaped portion of the injection cylinder 6 is pressed against the inner surface of the outer lid 5, the closure causes the end portion 16 to act like a spring and strongly press against the storage portion 17 to seal. Form a state. In addition, the spring action of the distal end portion 16 also exerts a force on the press contact between the middle foot 15 and the receiving portion 13, so that the press contact of this portion can also be enhanced. In this manner, the simple operation of closing the outer lid 5 allows the distal end 1 of the injection tube 6 to be closed.
The pressure contact and sealing of the tip 6 and the tip 14 of the middle foot 15 can be automatically enhanced.

Next, the outer lid 5 is connected to the inner plug 4 by a hinge 18.
Or a press-fitting cylinder 28 fitted to the inner plug 4 by press-fitting. This is because, as described above, the outer lid 5 may be formed separately from the inner plug 4 in addition to the integral connection by the hinge, and attached to the inner plug 4 by screwing or engaging. In the example, they are provided integrally by a hinge 18. With this configuration, even if the outer lid 5 is unconsciously closed on the inner plug 4 without being particularly conscious, the outer lid 5 is received by the receiving portion 13 of the middle foot 15 and the The end portion 16 of the tube 6 can be securely and easily accommodated. 1 and 2, 24, 2
Reference numerals 5, 26, and 27 denote a first space, a second space, a third space, and a fourth space, respectively, formed as a result of the above-described configuration.

[0016]

According to the first aspect of the present invention, the middle foot 15 is formed by the locking portion 11 and the middle ring portion 12 which are locked to the outer cover 5 when the outer cover 5 is closed. Since the press-fitted portion is stably and reliably and sufficiently sealed because it is press-fitted into the portion 13, and since the receiving portion 13 is close to the outer lid 5, the space formed by the middle foot 15 and the outer lid 5 is Since it can be formed small, the negative pressure generated in the space can be made extremely small, and the effect of the negative pressure in the space above the tearing portion 8 can be reliably prevented. In this manner, the danger of shower water entering the space formed by the middle foot 15, the outer lid 5, and the receiving portion 13 can be almost eliminated.

The invention according to claim 2 is configured as described above,
Further, the end portion 16 of the middle cylinder 6 is bent outward to form a trumpet shape, so that the middle cylinder 6 is configured to exhibit elasticity in the vertical direction.
At the time of closing, the injection cylinder 6 and the inner surface of the outer lid 5 and the receiving portion 13,
The vertical press-contact of the middle foot 15 can be strengthened, so that the airtightness can be enhanced, the influence of the negative pressure of the space above the tearing portion 8 on the space outside the middle foot 15 can be prevented, and the shower water can be prevented. The risk of intrusion can be almost eliminated. The invention according to claim 3 is configured as described above, and an annular concave receiving portion 17 is formed on the inner surface of the outer lid 5, and when the outer lid 5 is closed, the end portion 16 of the injection cylinder 6 is closed. Is formed so as to enter the accommodation portion 17. As a result, the distal end portion 16 of the injection tube 6 is positionally stable when the outer lid 5 is closed, and can automatically receive a vertical force to seal.

According to the fourth aspect of the present invention, the receiving portion 13 of the middle foot 15 can be closed even if the outer lid 5 is closed on the inner plug 4 unconsciously without being particularly conscious.
, And accommodation of the distal end portion 18 of the injection tube 6 by the accommodation portion 17 can be performed reliably and easily.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention and is a cross-sectional view of a heat-resistant cap.

FIG. 2 is a sectional view of a heat-resistant cap according to another embodiment of the present invention.

FIG. 3 is a sectional view of a conventional heat-resistant cap.

FIG. 4 is a cross-sectional view of the heat-resistant cap, which was filed and disclosed by the applicant of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer cylinder 2 Inner cylinder 3 Top wall 4 Inner plug 5 Outer lid 6 Injection cylinder 7 Split groove 8 Splitting part 9 Splitting member 10 Engaging part 11 Locking part 12 Inner ring part 13 Reception part 14 Tip part 15 Midfoot 16 End Part 17 accommodation part 18 hinge

Claims (4)

[Claims] 1. A synthetic resin inner plug 4 having an outer cylinder 1, an inner cylinder 2, and an upper wall 3; a pouring cylinder 6 closely contacting the inside of an outer lid 5 formed on the upper wall 3; A tearing member 9 provided on a tearing portion 8 formed by a tearing groove 7 formed in the upper wall 3 in 6; an outer lid 5 attached to the inner plug 4; A locking portion 11 that is provided separately and locks with the engaging portion 10 of the outer lid 5 when the outer lid 5 is closed; the locking portion 11 being integral with and inside the locking portion 11 A valley-shaped receiving portion 13 formed by an inner ring portion 12 protruding upward and narrowing downward; a tip portion 14 provided inside the outer lid 5 is provided inside the receiving portion 13. A heat-resistant cap comprising an annular middle foot 15 which is press-fitted in close contact with the cap. 2. The heat-resistant cap according to claim 1, wherein the distal end portion of the injection tube is bent outward to form a trumpet. 3. An annular concave receiving portion 1 is provided on the inner surface of the outer lid 5.
3. The heat-resistant cap according to claim 1, wherein the heat-resistant cap is formed such that a distal end portion of the injection tube presses into the housing portion when the outer lid is closed. 4. 4. The heat-resistant cap according to claim 1, wherein the outer lid is provided integrally with the inner plug by a hinge.