JP2010195453A - Lid of container for microwave oven cooking with inclined valve openable in one direction - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lid of a container for microwave oven cooking equipped with a valve which can discharge vapor generated during heating with a microwave oven appropriately and can prevent the container from crushing by decrease of inner pressure after completing cooking without increasing the number of part items. <P>SOLUTION: In the lid 2a of the container 10a for microwave oven cooking, a face 31a inclined to the horizontal direction is provided on the lid 2a and the inclined face 31a is equipped with an inclined valve 3a-1 and 3a-2 composed of a tongue part 32a, 33a, the rotation bases 34a of which are located at the upper side or the lower side and which are formed with cuts provided vertically to the horizontal direction. When the tongue part is provided as the rotation base 34a is located at the upper side, the tongue part becomes an inclined valve opened upward for discharging vapor and when the tongue part is provided as the rotation base 34a is located at the lower side, the tongue part becomes an inclined valve opened downward for introducing air. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a lid for a microwave cooking container having an inclined valve that opens in one direction.

Many heat-resistant plastic containers that can be used in microwave ovens are distributed and used.
The first requirement for this type of container is that a large amount of generated steam can be properly discharged when heated in a microwave oven. Next, after cooking is completed, the internal pressure drops and the container It is to prevent crushing. There is a container of patent document 1 as what provided the tongue-shaped part in the cover body for vapor | steam discharge | emission.

JP 2007-191161 A

  However, in the container of Patent Document 1, since the tongue-shaped portion is provided by being cut vertically with respect to the horizontally positioned surface of the lid, as shown in FIG. When opening, as a result of trying to rotate in the shape of an arc around the middle point of the base, the tip always gets caught by the part surrounding the tip. For this reason, in cooking with a lot of savory ingredients such that the pressure in the container rapidly increases, the steam is not discharged well by a slight catch, the entire lid comes off, and the contents scatter and there is a danger. On the other hand, at the time of decompression, a force is generated to pull the tongue-shaped portion into the container, but the tongue-shaped portion is caught in each case when returning to the initial position and when pulling into the container. Therefore, it is not completely drawn into the container, and there is no guarantee that the pressure in the container can be recovered smoothly.

  Accordingly, an object of the present invention is to solve the above-described problems of the prior art.

The present invention is provided with a surface inclined with respect to the horizontal direction on the lid of the microwave cooking container,
Microwave cooking characterized by having a tilting valve comprising a tongue-like portion formed by a notch that is vertically placed with respect to the horizontal direction, and the rotation base is located on the upper or lower side on the inclined surface. The said subject was solved with the cover body of the container for containers.

According to the present invention, if the tongue-shaped portion is provided so that the rotation base portion of the tilt valve is located on the upper side, the tilt valve opens upward, and when a certain pressure is exceeded during microwave cooking, the tongue-shaped portion Can be opened smoothly and steam can be discharged, and if a tongue-shaped part is provided so that the pivot base of the tilt valve is located on the lower side, the tilt valve opens downward, so that after cooking At the time of decompression, since the tongue-like portion opens smoothly inside the container, air outside the container can be taken in, and the container can be prevented from being crushed.
In addition, since the tilt valve of the present invention is formed only by a process of making a vertical cut in the lid, the number of parts does not increase and the production cost can be reduced.

(A) is a top view of the container of 1st Embodiment of this invention, (B) is a longitudinal cross-sectional view of the container of 1st Embodiment of this invention, (C) is a C arrow longitudinal cross-sectional view of (A). (A) is a longitudinal sectional view of the tongue-shaped portion of the first embodiment of the present invention, (B) is an enlarged longitudinal sectional view of the tongue-shaped portion of the first embodiment of the present invention, and (C) is C of (A). The expanded longitudinal cross-sectional view of a part. (A) is a top view of a container according to a second embodiment of the present invention, (B) is a longitudinal sectional view of a lid body according to the second embodiment of the present invention, and (C) is a longitudinal sectional view taken along the arrow C in (A). . (A) is a top view of the container of 3rd Embodiment of this invention, (B) is a longitudinal cross-sectional view of the cover body of 3rd Embodiment of this invention. The longitudinal cross-sectional view of the cover body of 4th Embodiment of this invention. The enlarged longitudinal cross-sectional view which shows the amount of catch of the conventional tongue-shaped part.

Embodiment 1

  Hereinafter, a first embodiment of the present invention will be described with reference to FIG. 1, FIG. 2, and FIG.

  As shown in FIG. 1, the container 10a for microwave oven cooking of this embodiment consists of the container main body 1a which has the accommodating part 11a of foodstuffs, and the cover body 2a, and the container main body 1a and the cover body 2a are fitting fitting respectively. The attachment surfaces 12a and 22a and the retaining projections 13a and 23a are fitted together.

A chevron-shaped inclined surface 31a as shown in FIG. 1C is formed on a part of the fitting contact surface 22a of the lid 2a, and an exhaust tongue having an inclined surface below the inclined surface is formed on one inclined surface. The tilt valve 3a-1 is composed of a portion 32a, and the other slope is provided with a tilt valve 3a-2 composed of an intake tongue 33a-2 with the upper side of the tilt surface as a rotation base. Yes.
Since this type of container is always used in a horizontal plane, the notch in the tongue-shaped portion is provided not perpendicular to the inclined surface 31a but perpendicular to the horizontal direction. .

Therefore, for example, as shown in FIG. 2, an exhaust tongue having an inclined surface 31 a having an angle of 10 ° and a plate thickness of 0.5 mm and a rotating base shaft 34 a below the inclined surface having a length of 8 mm. When the part 32a is provided, the amount of hooking when opening to the outside of the container is 0 mm. (The “hook amount” described here refers to the length of the portion where the hook is the largest when the tongue-shaped portion rotates around the center of the rotation base as a fulcrum.)
The tongue-like portion provided on the horizontally positioned surface as in the prior art of FIG. 6 generates a slight amount of hooking regardless of whether the tongue-like portion is opened to the outside or inside of the container. Since the amount of catch is zero, it can open smoothly and escape steam without any resistance. Further, even when closing from the open state, it is possible to smoothly return to the original position without being caught.
On the contrary, when trying to open toward the inside of the container, the amount of catch is 0.5 tan 10 °, which is about 0.1 mm, so the amount of catch is large, and therefore it does not open inside.
Therefore, the exhaust tongue 32a having the rotation base 34a on the lower side of the angled inclined surface opens only toward the outside of the container, not inside the container.

  Conversely, the intake tongue 33a having the rotation base 34a on the upper side of the inclined surface opens only inside the container and smoothly returns to the original position without being caught after the introduction of the outside air. Therefore, the tongue-shaped portion does not open when steam is generated, and cooking under pressure is possible.

  Therefore, if a tongue-like portion having a vertical cut is provided on the inclined surface so that both the steam discharge and the outside air introduction are not performed on one tongue-like portion, exhaust and intake can be performed smoothly. It is possible to overcome the problem of pressure adjustment caused by catching.

Embodiment 2

  Next, a second embodiment of the present invention will be described with reference to FIG. 3 with respect to parts different from the first embodiment.

In this embodiment, an inclined surface is not directly provided on the abutting surface, but a convex portion 35b is provided on a part of the abutting surface 22b of the lid 2b as shown in FIG. An inclined surface 31b is provided on the top.
Similar to the first embodiment, the inclined surface 31b includes an inclined valve 3b-1 including an exhaust tongue 32b having a vertical cut and an inclined valve 3b-2 including an intake tongue 33b. The valve part 3b is comprised. Reference numeral 34b is a rotation base.

  In this manner, by providing the inclined surface 31b on the convex portion 35b, the positions of the tongue-shaped portions 32b and 33b are further higher than the fitting abutting surface 22b. Can be reduced.

Embodiment 3

  Next, a third embodiment of the present invention will be described with reference to FIG. 4 for parts different from the first embodiment.

In the above-described embodiment, as shown in FIG. 4A, the inclined valve including the tongue-shaped portion is provided on a part of the fitting contact surface. However, in this embodiment, the central horizontal portion 25c of the lid 2c. Is provided.
An inclined surface 31c toward the inside of the container is formed in the central horizontal portion 25c of the lid, and an inclined valve 3c-1 including an exhaust tongue 32c having a rotation base 34c on the lower side of the inclined surface is formed on one inclined surface. The other inclined surface is provided with an inclined valve portion 3c-2 including an intake tongue portion 33c having a rotation base portion 34c on the upper surface of the inclined surface (see FIG. 4B). .
In this case, the notch of the tongue-like portion is also provided perpendicular to the horizontal direction.
Since the operation of the tongue-like portion is the same as that of the first embodiment, a description thereof will be omitted.

  In this way, by providing the inclined valve made of a tongue-shaped portion in the central horizontal portion of the lid, it is possible to suppress the blow-off from the cut portion of the tongue-shaped portion compared to the case where it is provided at a lower position, and The liquid juice can be prevented from leaking before and after cooking.

Embodiment 4

  Finally, the fourth embodiment of the present invention will be described with reference to FIG. 5 only in parts different from the third embodiment.

In the third embodiment, the inclined surface 31c is provided directly on the central horizontal portion 25c of the lid body. However, in this embodiment, the concave portion recessed toward the inside of the container in the central horizontal portion 25d of the lid body 2d as shown in FIG. 35d is provided, and an inclined surface 31d that is further inclined toward the inside of the container is provided through the recess 35d. The inclined surface 31d includes an exhaust tongue 32d and an intake tongue 33d similar to those of the third embodiment.
Thereby, the danger of the burn by a user touching the tongue-shaped part provided on the inclined surface directly can be avoided.

In the above description, the case where the angled valve composed of both the exhaust and intake tongues is provided on the angled or V-shaped inclined surface is, of course, only the exhaust tongue. Well (for example, when cooking foods with a small amount of steam generated), a plurality of exhaust tongues or a plurality of exhaust / intake tongues may be provided.
Further, the shape of the tongue-like portion is not limited to that illustrated.

10a: Microwave oven cooking container 1a: Container body 2a: Lid 22a: Abutting surface 23a: Relief convex part 25c: Central horizontal part 3a: Inclined valve part 3a-1: Inclined valve 3a-2: Inclined valve 31a : Inclined surface 32a: Exhaust tongue 33a: Intake tongue 34a: Rotating base 35b: Convex

Claims (5)

A surface inclined with respect to the horizontal direction is provided on the lid of the microwave cooking container,
In the inclined surface, the rotation base is located on the upper side or the lower side, and has a tilt valve composed of a tongue-like portion formed by a cut made perpendicular to the horizontal direction,
A lid for a microwave cooking container.   The lid of the container for microwave oven cooking according to claim 1, wherein the inclined surface is provided by inclining a part of a fitting contact surface of the lid with the container body.   The lid of the container for microwave oven cooking according to claim 1, wherein the inclined surface is provided through a protrusion protruding from a part of a fitting contact surface of the lid with the container body.   The lid of the microwave oven cooking container according to claim 1, wherein the inclined surface is provided by inclining a part of a central horizontal portion of the lid.   The lid of the container for microwave oven cooking of Claim 1 with which the said inclined surface was provided through the recessed part which dented a part of central horizontal part of the said cover body.

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