JP2010505709A - Vacuum cover - Google Patents

Abstract

Disclosed herein is a vacuum cover, which is coupled to an object to define storage space isolated from the exterior, and moves in a direction that reduces the volume of the storage space due to its elasticity, thus discharging air from the storage space, therefore improving sealing ability and preventing food stored in the storage space from contacting the air. The vacuum cover is made of elastomer, such as silicone rubber, and integrally has a member for air-tightly contacting an object or a valve for supplying or exhausting the air. The vacuum cover includes an elastic body, which isolates storage space from an exterior and is deformed so that air is exhausted from or supplied to the storage space, and a valve provided at a predetermined position on the body to discharge and/or supply the air from and/or to the storage space.

Description

  The present invention forms a storage space that is blocked from the outside by coupling with a target member, for example, a container such as a dish or a bowl, and moves in a direction that reduces the volume of the storage space by its own elastic characteristics. As a result, air in the storage space can be discharged, so that airtightness can be improved, and food and drink stored in the storage space can be brought into contact with air and decayed. It relates to a vacuum cover. More specifically, it is made of an elastomer such as silicon rubber, and is integrally provided with a member for airtight contact with a target member or a valve for air supply or exhaustion, thereby producing an assembly between individual members. Unlike conventional vacuum covers, it is hygienic by preventing food and beverage-derived residues from entering the gap between the members and preventing fine food and drinks from remaining in the gap between the members. In addition, unlike conventional food container covers, the present invention relates to a vacuum cover that is not made of a synthetic resin and attracts consumers' hearts by preventing the generation of environmental hormones, which has recently become a problem.

  In recent years, vacuum containers that can be used as simple sealed containers and that are evacuated inside the container have been attracting the attention of consumers. With this vacuum container, the air inside the container is discharged to delay oxidation by aerobic microorganisms, thereby extending the shelf life of stored foods, such as fruits and vegetables, leftovers, etc. To do. Further, by discharging the air inside the container, the smell of the food is prevented from spreading or the other food is prevented from being permeated.

  The vacuum container is a system that discharges the air inside the container using a separate vacuum pump type vacuum device, such as the “vacuum container cover” of Korean Utility Model Registration No. 0395836 (September 7, 2005) And a type that has an exhaust piston such as a syringe on the container itself, such as “Vacuum packaging container” of Korean utility model registration No. 0402438 (November 24, 2005) Divided. However, the above-mentioned types have not achieved great trademark success due to the disadvantages of complex use that should replace simple sealed containers.

  On the other hand, an elastic cover is presented. According to this, although the degree of vacuum inside the container does not reach the technique of the above-mentioned two documents using a separate vacuum device, air can be discharged from the inside of the container to some extent with the main purpose of convenience of use. It is possible to obtain a food oxidation delay effect.

  Such an elastic cover consists of a hard pressure lid on the upper part and a silicon wrap cover on the lower part, "Ken-yeon's Korean Utility Model Registration No. 0389341 (July 1, 2005)" In addition, “the lid of the container” and the like of Korean Patent Registration No. 0526358 (October 28, 2005) of Sesem Co., Ltd., in which a collar portion is formed in order to obtain stretchability, are disclosed. These elastic covers allow the air in the storage space to be discharged by moving in a direction that reduces the volume of the storage space created by the coupling of the container and the cover.

  However, the elastic vacuum cover that performs such a pump function is an existing hermetic seal such as “sealed container for storing food and drink with safety handle” of Hanakobi Co., Ltd., Korean Patent Registration No. 045886 (October 5, 2004). In order to replace the container or create a demand separate from the sealed container, the following requirements must be satisfied.

  That is, while ensuring excellent sealing properties, it does not contain endocrine disrupting substances, so-called environmental hormone-producing materials such as polystyrene oligomers of plastic products, bisphenol A, and phthalic acid compounds used as plasticizers. In addition, there is a need for food containers and covers that do not use organic synthetic resins.

  For containers, heat-resistant glass products that do not produce environmental hormones are commercially available and are in the limelight. However, as for the cover, in consideration of unit price competitiveness and sealing performance, synthetic resin products are inevitable.

  Therefore, the present invention has been made in view of the above-mentioned problems of the prior art, and does not produce environmental hormones and ensures a sealing property corresponding to an existing sealed container, but by vacuuming the storage space. A vacuum cover capable of preventing food oxidation is provided.

  For this reason, the object of the present invention is made of an elastomer, particularly silicon rubber, so there is no environmental hormone problem and it has excellent heat resistance. Therefore, even if hot food that has just been put into a microwave oven or just cooked is added. An object of the present invention is to provide a vacuum cover in which no deformation or hermetic deterioration phenomenon occurs and there is no risk of food or drink leakage.

  It is another object of the present invention to provide various models of vacuum covers that can be applied to various target members such as bowl-type containers, dish-type containers, or tables covered with glass panels.

  Another object of the present invention is to integrally form the cover body up to a skirt or a sealing projection for contacting the surface of the target member to enhance the sealing performance, and for supplying or exhausting air in the storage space. Unlike the conventional sealed container in which the packing ring and the cover are joined (adhered or press-fitted), the food and drink are placed in the gap between the packing ring and the cover. An object of the present invention is to provide a vacuum cover that prevents contamination and non-hygienic problems by preventing entry or accumulation.

  Another object of the present invention is that each part is made of a material having the same physical properties but the thickness is different, so that the sealing with the container is improved (in the case of the thick part-skirt part), and the valve is opened. When returning after that, sealing is ensured by quick fitting and strong coupling force (in the case of thick part-integrated valve), and contact with the target member at the edge due to deformation of the part during evacuation In addition to the above, it is an object of the present invention to provide a vacuum cover that enables other contact with the target member (in the case of a thin portion-an edge portion). In this way, various functions are achieved by making the thicknesses of the respective parts different.

  In order to achieve the above object, the present invention provides an elastic body that is configured to block a storage space from the outside and perform an exhaust or air supply function on the storage space; And a valve provided at a predetermined position of the main body for supplying air into the storage space.

For the body-integrated valve, the valve includes a projecting pressing part and an intake / exhaust part cut out on the upper surface of the pressing part.
The exhaust passage facing the intake / exhaust section preferably has a shape in which the upper part is narrow and the lower part is wide.
For the separation type valve, the valve is located on a joint portion inserted into the mounting hole of the main body, a fixed portion that is in contact with the lower surface of the main body and is located below the joint portion, and an upper surface of the main body. And a blocking portion that covers the air discharge hole of the main body.
The joint portion of the valve has a length that can be raised and lowered with respect to the main body.
It is preferable that the valve is further provided with a grip part on an upper part of the blocking part.

  In order to improve the sealing performance, a sealing protrusion is provided on the main body portion that contacts the target member that forms a storage space blocked from the outside together with the main body, and an air layer is formed on the contact surface of the target member by the sealing protrusion. Is provided. Further, the outer boundary portion of the target member that forms a storage space blocked from the outside together with the main body and the main body are provided on their contact surfaces with a separation preventing portion that is coupled to each other by male-female coupling, It is preferable that a skirt is extended on the outer edge.

  A relatively thin thin portion is further provided on the inner side of the edge of the main body that is in contact with the target member that forms a storage space that is blocked from the outside together with the main body. It is preferable that it can be useful for improving the sealing property by further close contact with.

  As described above, the vacuum cover according to the present invention is made of an elastomer, particularly silicon rubber, and therefore has no environmental hormone problem and is excellent in heat resistance. Even if it is inserted, no deformation or hermetic deterioration phenomenon occurs, and there is no risk of leakage of food and drink. The present invention can provide various models of vacuum covers that can be applied to any target member such as a bowl-shaped container, a dish-shaped container, or a table covered with a glass panel.

  Further, a skirt or a sealing protrusion for contact with the surface of the target member to improve sealing performance is formed integrally with the cover body, and further, a valve for supplying or exhausting air in the storage space is integrated with the cover body. Unlike conventional closed containers with a structure in which the packing ring and the cover are bonded (adhered or press-fitted), food and drinks are prevented from entering or accumulating in the gap between the packing ring and the cover. Thus, it is possible to provide a vacuum cover that solves the contamination and unsanitary problems.

  In addition, each part is made of a material having the same physical properties, but the thickness is different, so that the sealing property with the container is improved (in the case of the thick part-skirt part), and the valve is opened and then quickly returned. Sealing is ensured by a tight fit and strong coupling force (in the case of thick part-integrated valve), and due to deformation of the part during evacuation, in addition to contact with the target member at the edge, Other contacts can be made (in the case of thin-edge). As described above, various functions can be achieved by different thicknesses of the respective portions.

It is sectional drawing which shows the state with which the dome shape vacuum cover (equipped with an integrated valve | bulb) which concerns on the 1st form of this invention was couple | bonded with the dish-type container which is a kind of object member which forms a storage space with the said vacuum cover. . It is sectional drawing for demonstrating the operation | movement which flows in external air in order to isolate | separate a vacuum cover and a container in the state of FIG. It is the top view and bottom view explaining the vacuum cover of the 1st form shown in FIG. It is sectional drawing which shows the state which applied the dome-type vacuum cover (equipped with an integrated valve | bulb) which concerns on the 1st form of this invention to the bowl-type container. It is a schematic bottom view which shows the modification of the suction / exhaust part of a vacuum cover integrated valve | bulb. It is sectional drawing which shows the various deformation | transformation forms of the flat type vacuum cover (equipped with an integrated valve) which concerns on the 2nd form of this invention, and the combined state of a flat type vacuum cover and a bowl type container. It is sectional drawing which shows the various deformation | transformation forms of the flat type vacuum cover (equipped with an integrated valve) which concerns on the 2nd form of this invention, and the combined state of a flat type vacuum cover and a bowl type container. It is sectional drawing which shows the various deformation | transformation forms of the flat type vacuum cover (equipped with an integrated valve) which concerns on the 2nd form of this invention, and the combined state of a flat type vacuum cover and a bowl type container. It is sectional drawing which shows the various deformation | transformation forms of the flat type vacuum cover (equipped with an integrated valve) which concerns on the 2nd form of this invention, and the combined state of a flat type vacuum cover and a bowl type container. It is the top view and sectional drawing which show the combined state of the vacuum cover provided with the isolation | separation type | mold valve | bulb which concerns on the 3rd form of this invention, and a bowl type container. It is the top view and sectional drawing which show the combined state of the vacuum cover provided with the isolation | separation type | mold valve | bulb which concerns on the 3rd form of this invention, and a bowl type container. FIG. 12 is a cross-sectional view of a main part of a vacuum cover provided with a separation type valve having a gripping portion unlike the valve shown in FIG. 11.

  Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals, particularly the reference numerals matching the Arabic numerals indicate members having the same function, and unless otherwise specified, the members indicated by the reference numerals in the drawings are members that conform to such standards. As long as you understand.

  The cover and the main body according to the present invention are classified into a dome shape and a flat plate shape according to their shapes. Further, the inscribed type in which the edge of the cover is in contact with the inner surface of the container by the form in which the container and the edge are in contact with each other, which forms the storage space blocked from the outside by being combined with the vacuum cover according to the present invention. And the outer surface of the container is divided into a circumscribed type in which the edge of the cover is in contact (the terms “inscribed” and “external” are defined based on the container), but the reference numerals for the cover and the main body are slightly different. The points were ignored and attached based on such criteria (Ccd, Cif, Ccf and Ccf ′).

  The valve that discharges air from the storage space or allows air to flow into the storage space also has a separate injection form and a separable form separately manufactured and combined (including a double injection form). The reference numerals were determined separately (Vu and Vd).

  Most of the articles to be combined with the vacuum cover in the present invention are bowl-shaped or dish-shaped containers, for example, but the dome-shaped cover Ccd shown in FIG. 1 is also a smooth surface (for example, a glass panel) provided on a table or the like. The term “subject” is used herein to encompass all articles that are combined with the vacuum cover.

  In this specification, the “skirt” 11 is a term that refers to a portion that extends from the edge of the main body of each vacuum cover model and covers the outer surface of the container.

  The main body and / or valve of the vacuum cover according to the present invention uses an elastomer, particularly silicon rubber which has no environmental hormone problem and has excellent heat resistance.

  Due to the elasticity inherent in the material, the vacuum cover of the present invention can serve as a pump for exhausting air from the storage space and supplying air into the internal space.

  First, the vacuum cover Ccd shown in FIGS. 1, 2, 3, 4, and 5 includes a dome-type vacuum cover and an integral valve according to the first embodiment of the present invention. Referring to FIGS. 1 and 2, the illustrated vacuum cover Ccd is a model that is mainly used to cover a dish-shaped container or to cover a whole container by placing a container containing food and drink on a glass panel of a table.

  First, in the drawing, the main body Bcd has a dome shape, has a skirt 11 at the edge so as to wrap the outer lower part of the dish-shaped container Cd, and is configured to be coupled to the container at a predetermined position. A separation prevention unit 12 is provided. Together with the main body Bcd, the target member, in particular the dish-shaped container Cd, forms a storage space S that is blocked from the outside.

  When the main body Bcd is pressurized and the air in the storage space S is discharged through the edge of the main body or the valve Vu, the main body made of an elastomer material contracts and deforms according to the volume reduction of the storage space. . The coupling force between the dish-shaped container Cd and the cover increases due to the exhaust from the storage space S (particularly, the coupling structure of the dish-shaped container, the main body detachment preventing portion 12 and the skirt 11 applies a force up and down). It is difficult to separate the cover even if it is added).

  Due to the contraction deformation of the main body, the thin part 14 that is relatively thinner than the other parts arranged inside the edge of the main body Bcd comes into contact with the upper surface of the dish-shaped container Cd. Thin section 14 can perform a double sealing function.

  Next, a valve Vu injected integrally is provided at the center upper portion of the main body Bcd, and a depression 15 is provided around the valve to prevent the valve Vu from protruding. ing.

  The valve Vu can be used for exhausting air from the storage space S and / or supplying air to the storage space. In the illustrated dome-shaped cover Ccd, the valve Vu and the main body Bcd are pressurized. At this time, the storage space is exhausted through a gap between the edge of the main body and the container Cd. According to circumstances, the valve is mainly used for supplying air into the storage space, and air is discharged through a gap between the edge of the main body and the container Cd when the main body Bcd is pressurized. it can.

  The valve Vu is surrounded by a depressed portion 15 of the main body, and has a protruding pressing portion 21 that is maintained at substantially the same height as the upper surface of the main body, and a suction cut by being cut into the upper surface of the pressing portion 21. / It consists of the exhaust part 22.

  As shown in a circle “A” in FIG. 1, the intake / exhaust portion 22 is cut in the vertical direction, and can be confirmed from a plan view of [A] and a bottom view of [B] of FIG. So that it is straight. When the cover Ccd of the first form and the dish-shaped container Cd are to be separated, the pressing portion 21 is pressurized. In particular, as shown in FIG. 2, both ends of the intake / exhaust portion 22 are in the incision direction. Press to expand, let air in, and then separate.

  The outer shape of the pressing portion 21 of the valve Vu has a substantially truncated cone shape. However, in reality, the exhaust passage 22a facing the intake / exhaust section 22 has a shape with a narrow upper portion and a lower lower portion, more precisely, as shown in a circle “B” in FIG. It has the shape as expressed.

  The exhaust passage 22a having the narrow upper portion and the lower lower portion forms a thicker portion 21a in the adjacent portion of the intake / exhaust portion 22, and elasticity acts in the direction in which the intake / exhaust portion 22 of the valve is closed. This ensures quick fitting and strong coupling force when returning after opening the valve.

  FIG. 4 shows a state in which the vacuum cover of the first embodiment shown in FIG. 1 is applied to the bowl-type container Cb. However, when the storage space exhaust vacuum is applied by the peripheral thin part 14 at the edge of the cover body Bcd, the thin cover is formed. The lower surface of the part comes into contact with the inner surface of the upper end of the container Cb, and the sealing performance can be improved.

  Further, in the present invention, the vacuum cover Ccd of the first form is a modification, and as shown in a circle “C” in FIG. 1, the incision form of the intake / exhaust part of the valve Vu is not vertical but oblique. It has a linear shape 22A so that the air that flows in and out in the vertical direction is more completely blocked.

  FIG. 5 shows various forms of the intake / exhaust portion 22A of the valve. [A] is a tooth-shaped incision form, [B] is a curvilinear incision form, [C] is a bilinear incision form, and [D] is It is a 2 bracket type incision form. All of these are in consideration of improving the sealing performance with the intake / exhaust section closed.

  FIG. 6 shows a flat plate type vacuum cover Cif according to the second embodiment of the present invention, which includes an integrated valve Vu, but in which a bowl type container Cd and an edge portion are inscribed. Referring to FIG. 6, the cover main body Bif is provided with a depression 15 around the valve Vu, and a sealing protrusion 13 is provided at a portion in contact with the inner surface of the bowl type container Cd which is a kind of target member. . Further, an air layer 13a is formed on the contact surface with the container Cd by the sealing protrusion, so that the sealing performance is improved.

  The air layer 13a is actually surrounded by the flange 13A of the cover main body Bif, the sealing protrusion 13 and the inner wall of the container Cb. If there are two or more sealing protrusions 13 as necessary, The air layer is further formed by being surrounded by the protrusion and the inner wall of the container. Further, the flange 13A of the cover body further protrudes outward as compared with the container, and serves as a grip when separating the container and the cover. The thickness of the flange 13A is smaller than that of other parts. thick. Therefore, this structure is sufficient to reduce material consumption and to prevent the cover from coming out into the container even when the storage space S is evacuated by pressing the cover with the cover positioned at the upper end of the container. Provide adequate support.

  When the cover main body Bif is pressed to discharge the air in the storage space S, the air is generated through the valve and / or between the edge of the main body and the container. It is discharged through.

In FIG. 7, unlike the form shown in FIG. 6, the vacuum cover Ccf is deformed so as to wrap the outer surface of the bowl-type container Cb, and the sealing protrusion 13 and the air layer 13a are also arranged and formed accordingly. Yes.
In FIG. 8, compared with FIG. 7, the thin part 14 is provided around the edge part 13A, and the thin part 14 is in close contact with the upper inner wall of the bowl-type container Cb when the storage space S is vacuumed. Deform.
FIG. 9 is an intermediate form between FIG. 6 and FIG. 7 and is mainly different from that of FIG. 9 in that an extension sleeve 11A that contacts the inner surface of the container is provided in addition to the skirt 11 that wraps the outer surface of the container Cd. Is the finger insertion gap).

  FIGS. 10 and 11 are a plan view and a sectional view showing a coupling state between a vacuum cover provided with a separation type valve Vd according to a third embodiment of the present invention and a bowl type container, respectively. [A] and [B] of FIG. 10 show a square and a circular cover Ccf in accordance with a square and a circular bowl container, respectively.

  As shown in FIGS. 10 and 11, the bowl-type container Cb is provided with a continuous or discontinuous male detachment preventing portion 31 on the upper outer peripheral surface, and the male detachment preventing portion is provided on the body Bcf of the cover Ccf. A corresponding male detachment preventing portion 12 fitted to 31 is provided on the inner peripheral surface of the skirt 11. The lower inner side of the skirt 11 of the main body has a tilted form, and the container Cb also has a tilted outer wall, and the relative shape is matched and the finger insertion gap 12a is provided on the boundary surface. , Separation of the cover and the container is facilitated. Since the edge part of the body Bcf of the cover Ccf and the part of the skirt 11 are thicker than the inner part and can be coupled to the container with a strong binding force, the container and the cover are prevented from being separated as much as possible and the sealing performance is improved. It has come to contribute to.

  On the other hand, an attachment hole 16 for the valve Vd is provided in the center of the main body Bcf, and four air discharge holes 17 are provided around the attachment hole 16. The separation type valve Vd includes a joint portion 27 inserted into the mounting hole 16 of the main body Bcf, a fixing portion 25 that contacts the lower surface of the main body and is positioned below the joint portion, and is positioned on the upper surface of the main body. And a blocking portion 23 that covers the air discharge hole 17 of the main body. Since such a valve is also provided in the depressed portion of the main body, the protrusion is prevented.

  When the cover Ccf as described above presses the main body Bcf coupled to the container to discharge the air in the storage space S, the air mainly passes through the air discharge hole 17 due to the arrangement position of the shut-off portions 23 of the valve. Is discharged through. Further, when the main body Bcf is separated from the container, the shut-off portion 23 of the valve may be lifted in order to allow air to flow in advance.

  [A] and [B] in FIG. 12 are cross-sectional views of a main part of a vacuum cover provided with a separate type valve having a gripping portion, unlike the valve shown in FIG. The valve Vd shown in [A] of FIG. 12 is different in that it includes a gripping portion 23A that simply protrudes.

  The valve Vd shown in [B] of FIG. 12 has a length that allows the joint portion 27 to move up and down with respect to the main body Bcf, in addition to the grip portion 23A. The air discharge hole 17A of the main body Bcf shown in [B] of FIG. 12 also serves as a valve mounting hole, and includes an exhaust slit 25A provided in the fixing portion 25 of the valve Vd and an air discharge hole 17A of the main body. Air is exhausted through. When exhausting from the storage space or supplying air to the storage space, it is necessary to pull the grip portion 23A so that the blocking portion 23 is detached from the main body Bcf.

  In the form shown in [B] of FIG. 12, the valve cannot be arbitrarily rotated in order to always match the exhaust slit 25 </ b> A and the air exhaust hole 17 </ b> A of the main body. preferable. This can be realized, for example, by making the cross sections of the joint portion 27 of the valve and the air discharge hole 17 of the main body into a non-circular shape (for example, semi-circular, triangular, square, etc.).

  Further, it is preferable that the valve is stopped at a position where the shut-off portion 23 of the valve closes and opens the air discharge hole 17 of the main body. This can be realized, for example, by a method in which stop protrusions are provided at the upper and lower positions of the joint portion 27 of the valve.

  In the above description, ordinary well-known techniques related to specific physical properties or non-hazardous grades of elastomers, particularly silicon rubber, are omitted, but those skilled in the art will infer and infer this. Will be able to.

  In the above description of the present invention, the vacuum cover having a specific shape and structure has been mainly described with reference to the accompanying drawings. However, those skilled in the art will understand the characteristics of each cover body and the characteristics of the valve of the present invention. Various modifications and changes can be made in combination with each other. It should be understood that these variations and modifications belong to the protection scope of the present invention.

Ccd, Cif, Ccf, Ccf ': Vacuum cover Bcd, Bif, Bcf: Main body 11: Skirt 12: Detachment prevention part 13: Sealing protrusion 13A: Flange 13a: Air layer 14: Thin part 15: Recessed part 16: Valve mounting hole 17, 17A: Air discharge holes Vu, Vd: Valves 21: Protruding pressing parts 21a: Thick parts 22, 22A: Suction / exhaust parts 22a: Exhaust passages 23: Blocking parts 23A: Holding parts 25: Fixing parts 25A: Exhaust slits 27 : Joint part

Claims (15)

An elastic body that blocks the storage space from the outside and is deformed to perform an exhaust or air supply function on the storage space;
A vacuum cover comprising a valve provided at a predetermined position of the main body for exhausting air from the storage space and / or supplying air to the storage space.   The vacuum cover according to claim 1, wherein the valve includes a projecting pressing portion and an intake / exhaust portion that is cut out on an upper surface of the pressing portion.   The vacuum cover according to claim 2, wherein the exhaust passage facing the suction / exhaust part has a shape in which an upper part is narrow and a lower part is wide.   The valve includes a joint portion inserted into the mounting hole of the main body, a fixing portion that is in contact with the lower surface of the main body and located below the joint portion, an upper surface of the main body, and an air exhaust of the main body. The vacuum cover according to claim 1, further comprising a blocking portion that covers the hole.   The vacuum cover according to claim 4, wherein a joint portion of the valve has a length that can be raised and lowered with respect to the main body.   The vacuum cover according to claim 4, wherein the valve further includes a grip portion on an upper portion of the blocking portion. A sealing protrusion is provided on the main body part that contacts a target member that forms a storage space blocked from the outside together with the main body,
The vacuum cover according to any one of claims 1 to 6, wherein an air layer is formed on a contact surface of the target member by the sealing protrusion.   The outer boundary portion of the target member that forms a storage space blocked from the outside together with the main body and the main body are provided with a detachment preventing portion that is coupled to each other by male-female coupling on their contact surfaces. The vacuum cover according to any one of claims 1 to 6.   The vacuum cover according to any one of claims 1 to 6, wherein a skirt is extended on an outer edge of the main body.   The vacuum cover according to claim 1, wherein the main body is a dome shape.   The thin part relatively thin compared with other parts is arranged in the edge inside of the main part which touches the object member which forms the storage space intercepted from the outside with the main part compared with other parts. The vacuum cover according to 10.   The vacuum cover according to any one of claims 1 to 6, wherein a recessed portion is provided in the main body around the valve in order to prevent the valve from protruding.   The vacuum cover according to claim 1, wherein the main body is integrally injection-molded and made of an elastomer.   The vacuum cover according to any one of claims 1 to 3, wherein the main body and the valve are integrally injection-molded and made of an elastomer.   4. The vacuum cover according to claim 2, wherein the incision form of the intake / exhaust portion of the valve is an oblique direction.

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