KR20170103589A - Cover for airtight container - Google Patents

Abstract

A cover for an airtight container is disclosed. According to an aspect of the present invention, the cover for an airtight container comprises: a packing; a packing groove into which the packing is inserted; an air path formed to be engraved in the packing groove to enable air to be introduced and discharged; and an adjustment protrusion formed in the air path to be in contact with the packing. Moreover, as the cover is coupled to a container body to maintain a sealing state, contact between the adjustment protrusion and the packing is temporarily released by pressure difference of the inside and the outside of the airtight container to enable air to be introduced and discharged.

Description

{COVER FOR AIRTIGHT CONTAINER}

The present invention relates to a cover for a hermetically sealed container, and more particularly, to a cover for a hermetically sealed container in which the hermetically sealed state is temporarily released by a pressure difference generated inside and outside the hermetically sealed container, and air can flow.

A sealed container for storing contents such as food is generally composed of a cover and a container body in which the contents are stored. In order to store the contents for a long time, the sealed container is provided with packing to prevent the inflow and outflow of air. The hermetically sealed container has an elastic material packing interposed between the cover and the container main body, and the inflow and outflow of air can be prevented by the packing.

On the other hand, when a pressure difference is generated between the inside and outside of the hermetically sealed container, since the inflow and outflow of air are blocked, the hermetically sealed container shrinks or expands. For example, when the sealed container containing the contents is heated in a microwave oven, the pressure inside the sealed container is higher than that of the outside. Since the outflow of air is blocked by the packing or the like, Or in the worst case, the sealed container is damaged. Therefore, in the case of the conventional hermetically sealed container, when the hermetically sealed container is heated by using a microwave oven, the cover is separated from the container body and used.

In order to solve the above problems, Korean Patent Registration No. 0894726 and the like disclose a closed container cover provided with a valve to selectively discharge the air inside the closed container. However, since the cover is provided with a separate valve as described above, the structure of the cover becomes complicated and the manufacturing cost is increased. In addition, the conventional hermetically sealed container provided with the valve incurs inconvenience of use because the valve must be manually opened or closed.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a cover for an airtight container which can temporarily inflow and outflow air by a simple structure.

Other objects of the present invention will become more apparent through the embodiments described below.

According to one aspect of the present invention, there is provided a cover for a hermetic container, comprising: a packing; a packing groove into which the packing is inserted; an air passage formed in the packing groove at a negative angle to allow inflow and outflow of air; The contact between the adjusting protrusion and the packing is temporarily released by a pressure difference between the inside and outside of the sealed container so that the inflow or outflow of air is prevented. Is allowed.

The cover of the closed container according to the present invention may have one or more of the following embodiments. For example, the width of the adjustment projection is equal to the width of the air passage, and the thickness of the adjustment projection may be made smaller than the width of the packing groove. And the end of the adjustment projection may be formed as a curved line.

The height of the adjusting projection may be made smaller than the depth of the air passage.

According to another aspect of the present invention, there is provided a cover for a hermetic container, comprising: a packing; a packing groove in which a packing is inserted and having a bottom surface; and a protrusion formed on the bottom surface to allow air to flow in and out between the bottom surface and the packing And an adjusting projection formed on one side of the inner projection and closing the air passage while being in contact with the packing. In a state where the cover is coupled to the container body to maintain the sealed state, the adjusting projection and the packing Is temporarily released by a pressure difference between the inside and outside of the closed container, so that the inflow or outflow of air through the air passage can be allowed.

The cover of the closed container according to the present invention may have one or more of the following embodiments. For example, the adjustment projection may be formed to be slanted so as to be in contact with the packing. And the packing may be provided with a hollow.

The cover has a downwardly protruding support protrusion, and the support protrusion can prevent the air passage from being completely closed by excessively shrinking the packing.

The present invention can provide a cover for a hermetically sealed container that allows air to flow in and out temporarily by a simple structure.

1 is a perspective view illustrating a closed container according to a first embodiment of the present invention.
Fig. 2 is a view illustrating a cover of the hermetically sealed container illustrated in Fig. 1. Fig.
3 is an enlarged view of a portion A in Fig.
4 is a cross-sectional view of a cover and a container body, illustrating a state in which the packing is removed.
5 is a cross-sectional view of a cover and a container body, illustrating a state where the packing is coupled.
6 is a view illustrating a part of a cover of a closed container according to a second embodiment of the present invention.
FIG. 7 is a cross-sectional view taken along line AA in FIG. 6, illustrating a state in which a packing is inserted.
FIG. 8 is a cross-sectional view taken along line BB in FIG. 6, illustrating a state in which a packing is inserted.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and will be described in detail in the detailed description. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout the specification and claims. The description will be omitted.

FIG. 1 is a perspective view illustrating a closed container 100 according to a first embodiment of the present invention, which illustrates a state in which a container body 140 and a cover 110 are separated from each other. 2 is an enlarged view of a portion A of FIG. 2, and FIG. 3 is an enlarged view of a portion A of FIG. 2. FIG. 3 is an enlarged view of a portion A of FIG. And an adjusting projection 128 are formed. 4 is a cross-sectional view of the cover 110 and the container body 140 illustrating the state that the packing 160 is removed. 5 is a cross-sectional view of the cover 110 and the container body 140 illustrating the state where the packing 160 is coupled. 5, the dashed line corresponds to the air passage 124 and the adjustment projection 128. As shown in Fig.

1 to 5, a closed container 100 according to a first embodiment of the present invention includes a cover 110 and a container body 140. The container body 140 has a constant volume of internal space so that contents (not shown) can be stored in the internal space. The cover 110 can be coupled to and separated from the upper portion of the container body 140. When the cover 110 is coupled to the container body 140, the inner space of the container body 140 is kept closed by the packing 160 coupled to the cover 110.

Hereinafter, the container body 140 of the hermetically sealed container 100 will be described first before explaining the cover 110 according to the embodiment of the present invention.

The container body 140 has a rectangular cross section and has a constant height and has an internal space (not shown). The upper part of the container body 140 is open and the upper end of the circumferential surface 141 is provided with an upper rim 142 for engaging with the cover 110. In the container body 100 of the closed container 100 according to the present embodiment, The upper rim 140 has four circumferential surfaces 141 and the upper rim 142 formed at the upper end of each circumferential surface 141 has the same shape and size.

The upper edge 142 protrudes outward in the horizontal direction at the upper end of the circumferential surface 141 of the container main body 140. The pressurizing groove 144, the side catching groove 146, And has an engaging projection 148. The upper surface of the upper rim 142 includes a flatly formed portion. It is possible to prevent the packing 160 from being excessively contracted due to the contact of the support protrusion 130 of the cover 110 with the upper rim 142.

The pressing groove 144 is a groove formed at the center of the upper rim 142. When the cover 110 is detached from the container body 140, the pressing protrusion 134 provided in the locking blade 132 of the cover 110 is inserted into the pressing groove 144 and is engaged. As a result, the cover 110 is separated from the container body 140 while the locking blade 132 rotates to lift the cover 110 upward.

The side latching grooves 146 are symmetrically formed on the left and right sides of the pressing grooves 144, respectively, and a part of the upper rim 142 has an open shape. When the cover 110 is lifted up onto the container body 140, the side latching protrusions 116 provided on the inner surface of the cover 110 pass through the side latching grooves 146. When the cover 110 is laterally moved by the rotation of the lock blades 132, the side locking protrusions 116 of the cover 110 are hooked to the lower portion of the upper edge 142, And the side surface is coupled to the container body 110.

The engaging projection 148 is formed to protrude downward from the center of the upper rim 142. The engaging projection 136 of the locking wing 132 is engaged with the engaging projection 148 so that the locking wing 132 is engaged with the container body 140.

The cover 110 engages the container body 140 to seal its open top. The cover 110 has a top surface 112 having a rectangular shape and a circumferential surface 114 protruding downward from an edge of the top surface 112. A side locking protrusion 116 and a rear locking protrusion 118 are provided in the circumferential surface 114.

The side stopper protrusion 116 is engaged with the lower edge of the upper edge 142 by the lateral movement of the cover 110 after passing through the side stopper groove 146 formed in the upper edge 142 of the container main body 140 do.

The rear catch protrusion 118 corresponds to a protrusion formed on a side surface of the circumferential surface 114 of the cover 110 opposite to the locking blade 132. The rear locking protrusion 118 is caught by the upper edge 142 when the cover 110 is engaged with the container body 140 so that the rear surface of the cover 110 132 are coupled to the container body 140. The container body 140 has a circumferential surface opposed to the container body 140. [

A first inner rim 120 and a second inner rim 122 are formed at predetermined intervals in a circumferential surface 114 of the cover 110. The first inner rim 120 and the second inner rim 122 are formed over the entire circumferential surface 114 of the cover 110 and may have the same height. The first inner rim 120 and the second inner rim 122 are spaced from each other at regular intervals corresponding to the packing grooves 123 into which the packing 160 is inserted.

A pair of support protrusions 130 are formed at a predetermined interval on the outer side of the first inner rim 120 and adjacent to the lock wing 132. The support protrusion 130 may have a protrusion shape protruding to the same length as the first inner edge 120. When the cover 110 engages the container body 140, the support protrusions 130 come into contact with the upper surface of the upper rim 142 (see FIGS. 4 and 5). This prevents the packing 160 from being excessively contracted in the process of engaging the cover 110 with the container body 140, and as a result, the air passage 124 can be prevented from being completely closed.

The support protrusions 130 also serve to increase the strength of the engagement of the locking blades 132 with respect to the container body 140.

Although the support protrusions 130 according to the present embodiment are illustrated as having a pair of protrusions formed at a predetermined interval in a portion of the cover 110 where the locking blades 132 are provided, The number and shape of the support protrusions 130 is not limited as long as the seal 160 can be prevented from being excessively contracted in the process of joining the support protrusions 140 to the support protrusions 130 to prevent the air passage 124 from being completely closed.

The lower end of the support protrusion 130 may protrude further downward or may be shorter than the first inner rim 120. As a matter of course, the extent to which the support protrusion 130 protrudes downward can be changed according to the strength and the size of the packing 160, the material of the cover 110, and the like.

A locking blade 132 is rotatably coupled to one of the circumferential surfaces 114 of the cover 110. The locking wing 132 allows the cover 110 to easily engage and disengage the container body 140. The locking blade 132 has a pressing projection 134, a coupling projection 136, and an inner surface 138.

The pressing protrusion 134 is a bending protrusion formed at the upper end of the locking wing 132. The pressing projection 134 is inserted into the pressing groove 144 formed in the side edge 142 when the cover 110 is detached from the container body 140 so that the locking blade 132 is rotated upward When the lock wing 132 rotates in the counterclockwise direction in Fig. 5 and Fig. 5), the lock wing 132 is pushed up toward the virtual portion of the cover 110 due to the rotation of the lock wing 132. [

The engaging projection 136 is formed symmetrically on both sides of the pressing projection 134 and is engaged with the engaging projection 148 formed on the side surface of the container body 140.

The inner surface 138 of the locking wing 132 urges the upper rim 142 as the cover 110 engages the container body 140 thereby causing the cover 110 to rotate about the rotation of the locking wing 132 Thereby being pulled in the lateral direction.

The structure of the cover 110 and the container body 140 of the closed container 100 according to the present embodiment and the connection and separation thereof are described in Korean Patent Laid-Open Publication No. 2015-0030128 and International Publication No. WO 2013/109103 And the detailed description thereof will be omitted.

Referring to FIG. 2, the packing groove 123 has a rectangular shape as a whole corresponding to the cover 110. The packing grooves 123 are formed by the first inner rim 120 and the second inner rim 122 and have the same overall width and depth. The packing 160 is inserted into the packing groove 123. The packing 160 provides a sealing force by being urged by the upper rim 142 of the container body 140 when the cover 110 engages the container body 140.

An air passage 124 is formed in a part of the packing groove 123 adjacent to the lock blade 132 (indicated by a dotted line in FIG. 5). The air passage 124 is formed at a predetermined depth from the inner surface of the first inner rim 120 forming the packing groove 123, the bottom surface 127 of the packing groove 123 and the outer surface of the second inner rim 122, And a groove formed continuously. Therefore, the air passage 124 has a generally U-shaped shape. The air passage 124 corresponds to a small passage allowing the air to flow into and out of the container body 140 despite the packing 160 providing a sealing force. Since the width and depth of the air passage 124 are small, they are not blocked by the packing 160 inserted in the packing groove 123.

The position and the number of the air passage 124 can be changed according to the shape and size of the cover 110. For example, when the size of the cover 110 is large, two or four air passages 124 may be symmetrically formed so as to face each other with respect to the lock wing 132.

An adjusting projection 128 is formed in a portion of the air passage 124 formed on the bottom surface 126. The adjustment projection 128 corresponds to a small projection formed over the entire width of the air passage 124. 2 to 3, it can be seen that the adjusting protrusion 128 is formed perpendicular to the longitudinal direction of the air passage 124. 4 and 5, it can be seen that the end of the adjusting projection 128 is formed as a curved line. Further, it can be seen that the thickness of the adjustment projection 128 is formed to be very small as compared with the width of the packing groove 123.

Referring to FIG. 5, the adjustment projection 128 abuts against the packing 160. Therefore, in the closed container 100 according to the present embodiment, the air passage 124 is blocked by the adjusting protrusion 128 in spite of the existence of the air passage 124, so that the air does not flow into the container body 140 have. However, since the width and thickness of the adjusting protrusion 128 are very small, when the pressure inside the container body 140 is larger than the external pressure or vice versa, The air can be flowed in and out.

For example, when the closed container 100 is heated using a microwave oven while the cover 110 is engaged, the pressure inside the closed container 100 becomes larger than the external pressure. At this time, the adjusting protrusion 128 of the air passage 124 corresponding to the weakest sealing force can be opened by the pressure difference between the inside and the outside of the closed container 100. That is, since the adjustment projection 128 is in contact with only a very small portion of the packing 160, the packing wall 164 of the packing 160 contracts due to a pressure difference between the inside and the outside of the closed container 100, (Not shown) may be generated between the sealing member 160 and the packing 160. The air in the container body 140 can be discharged to the outside through the air passage 124 by such an interval. When the air inside the hermetically sealed container 100 flows out to some extent and the pressure difference decreases, the contracted packing wall 164 returns to its original position and comes into contact with the regulating protrusion 128 again, so that the air passage 124 can be closed have.

The air inside the closed container 100 is contracted by the cold air of the freezing chamber so that the pressure of the outside of the closed container 100 is lowered to the inside of the inside of the closed container 100. [ Which is larger than the pressure. At this time, the adjustment protrusion 128 of the air passage 124 corresponding to the weakest sealing force can be opened by the pressure difference between the outside and the inside of the closed container 100. That is, due to the pressure difference between the outside and the inside of the hermetically sealed container 100, the packing wall 164 of the portion contacting the regulating protrusion 128 is somewhat contracted to form a fine gap between the regulating protrusion 128 and the packing 160 (Not shown) may occur. The air outside the container body 140 can be introduced into the interior through the air passage 124 by such an interval. When the air outside the hermetically sealed container 100 flows to a certain extent and the pressure difference decreases, the contracted packing wall 164 returns to its original position and comes into contact with the regulating protrusion 128 again, so that the air passage 124 can be closed.

The cover 110 is provided with the support protrusion 130 that can prevent the packing 160 from being excessively contracted so that the air passage 124 is prevented from being completely closed by the excessive contraction of the packing 160 .

Since the hollow portion 162 corresponding to the hollow space is formed in the packing 160, the portion contacting the adjustment projection 128 can be relatively easily contracted. That is, since the packing wall 164 having a reduced thickness is formed by the hollow 162, the packing 160 can be easily shrunk by a pressure difference between the inside and the outside of the container body 140.

The degree of shrinkage of the packing wall 164 at the portion in contact with the adjusting projection 128 by the pressure difference between the inside and the outside of the hermetically sealed container 100 depends on the material of the packing 160, The size and shape of the hollow 162, the height and width of the adjusting projection 128, the sectional shape of the adjusting projection 128, and the like. For example, as the length of the adjustment projection 128 projecting from the bottom surface 126 of the air passage 124 is greater, the packing wall 164 is pressed more strongly, so that the packing wall 164 is difficult to shrink, Which makes it difficult for the gap between the packing 140 and the adjustment projection 128 to occur. In addition, when the packing 162 is formed in a small size, the packing wall 164 is not easily shrunk when the packing wall 164 is thickened, and it is difficult to open the air passage 124 by a pressure difference .

4 and 5, the height of the adjusting projection 128 may be formed to be smaller than the depth of the air passage 124. The adjustment projection 128 does not protrude to the outside of the air passage 124. At this time, when the cover 110 is coupled to the container body 140, the packing 160 may be urged toward the air passage 124 to be in contact with the adjustment projection 128.

Of course, the height of the adjusting protrusion 128 may be larger than the depth of the air passage 124, and the adjusting protrusion 128 may protrude outside the air passage 124. In addition, the height of the adjustment projection 128 may be the same as the depth of the air passage 124.

Although the closed container 100 according to this embodiment is illustrated as having one air passage 124 and one regulating projection 128, the present invention is not limited to the number of the air passage 124 and the regulating protrusion 128, But is not limited by the placement position. The closed container 100 according to another embodiment of the present invention may include two or more air passages 124 and one or more regulating protrusions 128 may be provided in each air passageway 124 have.

Hereinafter, a closed container according to a second embodiment of the present invention will be described with reference to FIGS. 6 to 8. FIG.

Fig. 6 is a view illustrating a part of the cover of the hermetically sealed container according to the second embodiment of the present invention, and corresponds to part A of Fig. In FIG. 6, the packing 160 is removed from the packing groove 223. 7 and 8 are cross-sectional views taken along line AA and line BB, respectively, of FIG. 6, illustrating a state in which the packing 160 is inserted. 7 and 8, the packing 160 is provided with a hollow 162.

6 to 8, the sealed container according to the second embodiment has the packing groove 223 formed by the first inner rim 220 and the second inner rim 222, and the packing groove 223 And an inner protrusion 224 protruding from the portion where the lock blade (not shown) is formed. The inner protrusion 224 may protrude from the bottom surface of the packing groove 223 with a predetermined height and may extend over the entire width of the packing groove 223. The height of the inner protrusion 224 may be smaller than the depth of the packing groove 223. Each edge of the inner protrusion 224 can be rounded so that the packing 160 can be brought into close contact with the upper surface of the inner protrusion 224. [

Grooves (not designated) corresponding to the air passage are formed on the inner surface of the first inner rim 220 and the outer surface of the second inner rim 222.

7, the packing 160 inserted into the packing groove 223 is convexly protruded by the inner protrusion 224 so that the air passage 221 is formed on the side surface of the inner protrusion 224 do. The inner protrusion 224 is formed in a convex shape so that a part of the packing 160 is raised so that a constant gap corresponding to the air passage 221 is formed between the inner protrusion 224 and the bottom surface of the packing groove 223.

On both side surfaces of the inner projection 224, adjustment projections 228 having a small width and a length are formed. The adjustment protrusion 228 serves to reduce the area of the portion contacting the packing 160, such as the adjustment projection 128 according to the first embodiment, to open the air passage 221. The adjustment protrusion 228 may be formed obliquely as illustrated in FIG. 8 and may be in close contact with the packing 160. Thus, the adjusting protrusion 228 serves to shield the air passage 221 formed by the inner protrusion 224.

The width of the adjustment projection 228 may be made smaller than the width of the packing groove 223. In addition, the length of the adjusting projection 228 may be smaller than the length of the packing groove 223 and the length of the inner projection 224. By reducing the length and width of the adjustment projection 228, the contact area between the adjustment projection 228 and the packing 160 can be reduced, thereby causing a pressure difference between the inside and the outside of the closed vessel 100 The air can be introduced into the interior of the hermetically sealed container 100 or can be discharged to the outside.

Although the hermetically sealed container is described as being coupled to the container body by the slide of the cover, the configuration of the air passageways 124 and 221 and the adjustment protrusions 128 and 228 can be applied to a general airtight container having four locking blades Of course it is. Although the hermetically sealed container is exemplified as having a rectangular shape, the present invention is not limited by the shape of the hermetically sealed container as well as its shape. Therefore, it is needless to say that the configuration of the air passage and the adjustment protrusion can be applied to a hermetically sealed container having various shapes such as a circular shape, a rectangular shape, and a polygonal shape.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. It will be understood that the invention may be varied and varied without departing from the scope of the invention.

100: sealed container
110: cover
123, 223: packing groove
124, 221: an air passage
128, 228: adjusting projection
130: support projection
140:
160: Packing

Claims (9)

1. A cover which engages with a container body of a hermetically sealed container,
packing;
A packing groove into which the packing is inserted;
An air passage formed in the packing groove at an obtuse angle to allow inflow and outflow of air; And
And an adjusting protrusion formed in the air passage and contacting the packing,
Wherein the contact between the adjusting protrusion and the packing is temporarily released by a pressure difference between the inside and outside of the closed container in a state where the cover is coupled to the container body to maintain the closed state, cover. The method according to claim 1,
Wherein the width of the adjustment projection is equal to or smaller than the width of the air passage and the thickness of the adjustment projection is smaller than the width of the packing groove. The method according to claim 1,
And the end of the adjusting protrusion is formed in a curved shape. The method according to claim 1,
And the height of the adjusting projection is smaller than the depth of the air passage. 1. A cover which engages with a container body of a hermetically sealed container,
packing;
A packing groove into which the packing is inserted and having a bottom surface;
An inner protrusion protruding from the bottom surface to form an air passage for allowing inflow and outflow of air between the bottom surface and the packing; And
And an adjusting protrusion formed on one side of the inner protrusion and closing the air passage while being in contact with the packing,
The contact between the adjusting projection and the packing is temporarily released by a pressure difference between the inside and outside of the closed container in a state in which the cover is coupled to the container body and the closed state is maintained so that the inflow or outflow of air through the air passage This permits the cover of an airtight container. 6. The method of claim 5,
And the adjustment projection is formed to be inclined so as to be in contact with the packing. 7. The method according to any one of claims 1 to 6,
Characterized in that the packing comprises a hollow. 8. The method of claim 7,
Wherein the adjusting protrusion is formed in the same direction as the longitudinal direction of the hollow when the packing is inserted into the packing groove. 6. The method according to any one of claims 1 to 5,
Wherein the cover has a downwardly protruding support protrusion, and the support protrusion can prevent the air passage from being completely closed by excessively contracting the packing.

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