Sealing cover and container

Abstract

The invention relates to a sealing cover and a container, the sealing cover comprises a first cover body (10), a pull ring (20) and a second cover body (30), the first cover body (10) is installed on a container body (40) in a sealing mode, the pull ring (20) is installed on the first cover body (10), the pull ring (20) is constructed to be capable of being pulled up to open the first cover body (10), and the second cover body (30) is installed on the first cover body (10) in a sealing mode. The container comprises a sealing cover. The sealing cover comprises the two cover bodies, at least two layers of sealing can be achieved, the sealing effect can be improved, and water vapor, oxygen and the like can be effectively blocked; moreover, the first cover body adopts the design of the pull ring, compared with a scheme adopting a sealing film, the bad use experience that a product is not easy to take out due to film residue and the like can be effectively improved, and compared with a scheme of tearing off the sealing film, the pull ring can be pulled off by one hand in a more labor-saving manner, and the opening is more convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of container packaging, and in particular to a sealing cover and a container. Background Art

[0002] In the fields of health food, medicine, etc., product packaging is usually sealed with sealing film. Sealing films are mainly divided into two categories: non-easy-to-open and easy-to-open. Non-easy-to-open sealing films need to be punctured manually, which has a poor opening experience, and the film remains at the bottle mouth, and even the product may be blocked by the film, which is not conducive to access, resulting in a poor user experience; although the easy-to-open sealing film is easy to open and does not require external tools, which improves the opening experience, there will also be a problem of part of the film remaining at the bottle mouth, affecting the consumer experience.

[0003] In recent years, flip caps that snap onto the bottle mouth have appeared on the market. Although they solve the problem of membrane residue at the bottle mouth, the flip caps generally seal the bottle mouth with a single-sided inner plug, and their barrier properties are poor, which can easily bring moisture risks to the product.

[0004] It should be noted that the information disclosed in the background technology section of the present invention is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as admitting or suggesting in any form that the information constitutes the prior art known to those skilled in the art. The above statements are only used to provide background technology information related to the present application, and do not necessarily constitute the prior art. Summary of the invention

[0005] The embodiment of the present invention provides a sealing cover and a container, which can effectively improve the sealing performance of the container sealed by the sealing cover and prevent the items in the container from getting wet.

[0006] According to one aspect of the present invention, there is provided a sealing cover, comprising:

[0007] A first cover body, sealed and mounted on the container body;

[0008] A pull ring installed on the first cover, the pull ring being configured to be pulled up to open the first cover; and

[0009] The second cover body is sealed and installed on the first cover body.

[0010] In some embodiments, the first cover includes a first sealing ring, which is inserted into the container body and is close to the inner wall of the container body to achieve sealing of the container body.

[0011] In some embodiments, the first sealing ring includes a first sealing portion and a guide portion, the diameter of the first sealing portion is larger than the diameter of the guide portion, the first sealing portion is configured to be tightly attached to the inner wall of the container body, and the guide portion is configured to allow the first sealing ring to smoothly enter the container body.

[0012] In some embodiments, the guide portion includes a first guide portion and a second guide portion, the first guide portion is connected between the first sealing portion and the second guide portion, the thickness of the first guide portion is fixed, and the outer side surface of the second guide portion gradually tilts inward in a direction away from the first guide portion.

[0013] In some embodiments, the second cover body includes a second sealing ring, a first protrusion is provided on the outer side of the second sealing ring, and the first protrusion is configured to press against the inner side of the first sealing ring to achieve sealing of the second cover body to the first cover body.

[0014] In some embodiments, the first cover body includes a third sealing ring, and the third sealing ring is sleeved on the outside of the container body to achieve the connection between the first cover body and the container body.

[0015] In some embodiments, the third sealing ring includes a receiving portion and a second protrusion, the receiving portion is used to receive a protrusion ring disposed at the opening of the container body, and the second protrusion is engaged with a side of the protrusion ring away from the opening to prevent the first cover from separating from the container body.

[0016] In some embodiments, the third sealing ring further includes a second sealing portion disposed on a side of the accommodating portion away from the second protruding portion, the second sealing portion gradually tilts inward in a direction away from the accommodating portion, and the second sealing portion is pressed against the outer side of the container body.

[0017] In some embodiments, the third sealing ring further includes a third guide portion disposed on a side of the second protruding portion away from the accommodating portion, and an inner side surface of the third guide portion gradually tilts outward in a direction away from the second protruding portion.

[0018] In some embodiments, a convex rib is disposed on an end surface of the first cover body close to the second cover body, and the convex rib is in contact with an inner end surface of the second cover body.

[0019] In some embodiments, the first cover body includes a sealing disk disposed at the center of the first sealing ring, and the pull ring is installed on the sealing disk.

[0020] In some embodiments, the pull ring includes a connecting portion and a pulling portion, the connecting portion is connected to the sealing disk, and there is a preset gap between the pulling portion and the sealing disk.

[0021] In some embodiments, a rounded transition is used at the connection between the connecting portion and the sealing disk.

[0022] In some embodiments, the pull ring further includes two reinforcing ribs connected between the connecting portion and the sealing disk, and the two reinforcing ribs are respectively arranged on the inner side and the outer side of the connecting portion.

[0023] In some embodiments, a side of the sealing disk away from the pull ring is provided with a boss, and the boss is arranged at a position opposite to the connecting portion.

[0024] In some embodiments, the thickness of the pulled portion first increases and then decreases in a direction approaching the sealing disk.

[0025] In some embodiments, a width-increasing portion is provided at a position of the pulling portion opposite to the connecting portion.

[0026] In some embodiments, the first cover body further includes a connecting rib connecting the first sealing ring and the sealing disk.

[0027] In some embodiments, the connecting rib includes a first rib portion and a second rib portion, the pull ring includes a connecting portion and a pulling portion, the connecting portion is connected to the sealing disk, and a preset gap is provided between the pulling portion and the sealing disk, the first rib portion includes a first portion of the connecting rib corresponding to the connecting portion in the circumferential direction and a second portion corresponding to a position opposite to the connecting portion, the second rib portion includes a third portion and a fourth portion of the connecting rib located between the first portion and the second portion, and the thickness of the first rib portion is less than the thickness of the second rib portion.

[0028] In some embodiments, the thickness of the connecting rib is smaller than the thickness of the sealing disk, and a first groove is formed between the first sealing ring and the sealing disk on the side of the connecting rib close to the pull ring; a second groove is formed between the first sealing ring and the sealing disk on the side of the connecting rib away from the pull ring; in a direction perpendicular to the sealing disk, the first groove and the second groove have an overlapping portion, and the first groove is biased toward the side close to the pull ring relative to the second groove.

[0029] In some embodiments, the circumferential side of the sealing disk includes a first side and a second side respectively located on both sides of the connecting rib, and the first side is inclined along the direction away from the connecting rib toward the direction close to the center of the sealing disk; and / or the second side is inclined along the direction away from the connecting rib toward the direction close to the center of the sealing disk.

[0030] In some embodiments, the inclination of the first side surface is greater than the inclination of the second side surface.

[0031] In some embodiments, the second cover body is made of plastic material; and / or, the second cover body is made of metal material, and the sealing cover further includes a gasket, which is disposed inside the second cover body.

[0032] According to another aspect of the present invention, a container is provided, comprising the above-mentioned sealing cover.

[0033] Based on the above technical solution, the sealing cover of the present invention includes two cover bodies, which can achieve at least two layers of sealing. Compared with the solution with only one cover body, the sealing effect can be improved, and water vapor, oxygen, etc. can be effectively blocked; moreover, the first cover body in the sealing cover of the present invention adopts a pull ring design, and the first cover body is opened by pulling up the pull ring. Compared with the solution using a sealing film, the poor user experience such as the difficulty in removing the product due to the residual film can be effectively improved. Compared with tearing off the sealing film, pulling off the pull ring with one hand can save more effort and is more convenient to open. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0035] Figure 1 Exploded views of some embodiments of containers provided by the present invention.

[0036] Figure 2 This is a schematic structural diagram of the first cover body in some embodiments of the sealing cover provided by the present invention.

[0037] Figure 3 Cross-sectional views of some embodiments of the sealing covers provided by the present invention.

[0038] Figure 4 A cross-sectional view of a first cover body in some embodiments of the sealing cover provided by the present invention.

[0039] Figure 5 for Figure 4 An enlarged view of the portion indicated by reference numeral A.

[0040] Figure 6 This is a schematic structural diagram of a first cover body installed on a container body in some embodiments of the sealing cover provided by the present invention.

[0041] Figure 7 for Figure 6 An enlarged view of the portion indicated by reference numeral B.

[0042] Figure 8 A cross-sectional view of a second cover body in some embodiments of the sealing cover provided by the present invention.

[0043] Fig. 9 Exploded views of other embodiments of the container provided by the present invention.

[0044] Fig.10 Cross-sectional views of other embodiments of the sealing cover provided by the present invention.

[0045] In the figure:

[0046] 10. first cover; 20. pull ring; 30. second cover; 40. container body;

[0047] 11. first sealing ring; 111. first sealing portion; 112. first guiding portion; 113. second guiding portion; 12. third sealing ring; 121. accommodating portion; 122. second protruding portion; 123. second sealing portion; 124. third guiding portion; 13. convex rib; 14. sealing disk; 141. reinforcing rib; 142. boss; 143. third protruding portion; 144. first side surface; 145. second side surface; 15. connecting rib; 151. first groove; 152. second groove; 16. first cover body; 161. first thread;

[0048] 21. connecting portion; 22. pulling portion; 23. width increasing portion;

[0049] 31. second sealing ring; 311. first raised portion; 32. cover top; 33. cover ring portion; 331. second thread;

[0050] 41. Protruding ring. DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0053] like Figure 1 and Figure 2 As shown, in some embodiments of the sealing cover provided by the present invention, the sealing cover includes a first cover body 10, a pull ring 20 and a second cover body 30, the first cover body 10 is sealingly installed on the container body 40, the pull ring 20 is installed on the first cover body 10, the pull ring 20 is constructed to be pulled up to open the first cover body 10, and the second cover body 30 is sealingly installed on the first cover body 10.

[0054] In the above embodiment, the sealing cover includes two cover bodies, which can achieve at least two layers of sealing. Compared with a solution with only one cover body, the sealing effect can be improved to effectively block water vapor, oxygen, etc.; moreover, the first cover body in the sealing cover adopts a pull ring design, and the first cover body is opened by pulling up the pull ring. Compared with the solution using a sealing film, the poor user experience such as difficulty in removing the product due to residual film can be effectively improved. Compared with tearing off the sealing film, pulling off the pull ring with one hand can save effort and is more convenient to open.

[0055] In the embodiment provided by the present invention, the first cover body 10 serves as a part of the sealing cover rather than a part of the container body 40. Compared with the solution in which the first cover body 10 is fixed to the container body 40 or the first cover body 10 and the container body 40 are integrally formed, the first cover body 10 in the present invention can be installed on the container body 40 after the container body 40 is filled, thereby avoiding affecting the filling of items due to the opening on the first cover body 10 being too small or damaging the first cover body 10 when filling items, and can also reduce the manufacturing difficulty of the container body 40.

[0056] In some embodiments, the first cover body 10 includes a first sealing ring 11 , which is inserted into the container body 40 . The first sealing ring 11 is close to the inner wall of the container body 40 to achieve sealing of the container body 40 .

[0057] When the first cover 10 is installed on the container body 40, the first sealing ring 11 is inserted into the container body 40, and the outer side of the first sealing ring 11 is in close contact with the inner wall of the container body 40 to achieve sealing of the container body 40, and the sealing effect is good.

[0058] like Figure 3 and Figure 4 As shown, in some embodiments, the first sealing ring 11 includes a first sealing portion 111 and a guide portion, the diameter of the first sealing portion 111 is larger than the diameter of the guide portion, the first sealing portion 111 is configured to be tightly attached to the inner wall of the container body 40, and the guide portion is configured to allow the first sealing ring 11 to smoothly enter the container body 40.

[0059] By providing the first sealing portion 111 with a larger diameter, the first sealing portion 111 can be brought close to the inner wall of the container body 40 to achieve close contact, thereby achieving a better sealing effect.

[0060] By providing a guide portion with a smaller diameter, the first sealing ring 11 can enter the container body 40 more smoothly and smoothly when the first sealing ring 11 is inserted into the container body 40, thereby reducing the resistance when the first sealing ring 11 is initially inserted into the container body 40 and improving the convenience of installation.

[0061] In some embodiments, the guide portion includes a first guide portion 112 and a second guide portion 113, the first guide portion 112 is connected between the first sealing portion 111 and the second guide portion 113, the thickness of the first guide portion 112 is fixed, and the outer side surface of the second guide portion 113 gradually tilts inward in a direction away from the first guide portion 112. Here, "outside" and "inside" are based on the center point of the first sealing ring 11 as a reference direction, the side close to the center is called the inner side, and the side away from the center is called the outer side.

[0062] The total length of the guide portion can be increased by providing the first guide portion 112 . The diameter of the first guide portion 112 and the diameter of the second guide portion 113 are both smaller than the diameter of the first sealing portion 111 .

[0063] Compared with the first guide portion 112, the guiding function of the second guide portion 113 is mainly reflected in that when the first sealing ring 11 is just inserted into the container body 40, the first sealing ring 11 can be smoothly inserted into the container body 40, thereby improving the installation convenience of the first cover body 10 and improving the installation experience.

[0064] like Figure 8 As shown, in some embodiments, the second cover body 30 includes a second sealing ring 31, and a first protrusion 311 is provided on the outer side of the second sealing ring 31. The first protrusion 311 is configured to press against the inner side of the first sealing ring 11 to achieve sealing of the second cover body 30 on the first cover body 10.

[0065] By providing a second sealing ring 31 and providing a first protrusion 311 on the second sealing ring 31, after the pull ring 20 is pulled off, the first protrusion 311 can seal the first sealing ring 11, thereby achieving the sealing of the second cover body 30 on the first cover body 10, and then achieving the sealing of the second cover body 30 on the container body 40, so that the sealing cover still has a sealing effect after the pull ring is pulled off during use, effectively blocking water vapor, oxygen, etc., and keeping the items in the container body 40 fresh.

[0066] In addition, the first protrusion 311 protrudes from the outer surface of the second sealing ring 31 in a direction away from the outer side surface, which can increase the diameter of the second sealing ring 31 at the first protrusion 311 , thereby forming a squeezing force on the first sealing ring 11 .

[0067] When the second cover 30 is mounted on the first cover 10 , the second sealing ring 31 is inserted into the first sealing ring 11 .

[0068] By providing a second sealing ring 31 and providing a first protrusion 311 on the outer side of the second sealing ring 31, the first protrusion 311 can squeeze the first sealing portion 111 to increase the adhesion between the first sealing ring 11 and the container body 40, so that the first sealing ring 11 can better adhere to the inner wall of the container body 40, thereby greatly enhancing the sealing effect of the first sealing ring 11.

[0069] In some embodiments, the outer side surface of the first protrusion 311 gradually moves away from the center of the second sealing ring 31 and then gradually approaches the center of the second sealing ring 31 along the direction close to the end of the second sealing ring 31, so as to form a guiding inclined surface at the end of the second sealing ring 31, so that the second sealing ring 31 can enter the first sealing ring 11 more smoothly.

[0070] like Figure 4 As shown, in some embodiments, the first cover body 10 includes a third sealing ring 12 , and the third sealing ring 12 is sleeved on the outside of the container body 40 to achieve the connection between the first cover body 10 and the container body 40 .

[0071] By providing the third sealing ring 12 , a second layer of sealing can be achieved on the outside of the container body 40 , and together with the first sealing ring 11 , an inner and outer clamping is formed to achieve a double-layer seal.

[0072] like Figure 6 and Figure 7 As shown, in some embodiments, the third sealing ring 12 includes a receiving portion 121 and a second protruding portion 122, the receiving portion 121 is used to receive a protruding ring 41 disposed at the opening of the container body 40, and the second protruding portion 122 is snapped into the side of the protruding ring 41 away from the opening to prevent the first cover body 10 from detaching from the container body 40.

[0073] The accommodating portion 121 can accommodate the protruding ring 41, and the second protruding portion 122 can block the relative movement between the first cover 10 and the container body 40, so that the connection between the first cover 10 and the container body 40 is achieved through the accommodating portion 121 and the second protruding portion 122. Moreover, the first cover 10 and the container body 40 can be connected by pressing the first cover 10 into the container body 40 through the accommodating portion 121 and the second protruding portion 122.

[0074] The second protrusion 122 protrudes outward relative to the accommodation portion 121 .

[0075] In some embodiments, the outer side surface of the second protrusion 122 gradually moves away from the center of the third sealing ring 12 and then gradually approaches the center of the third sealing ring 12 along the direction close to the end of the third sealing ring 12, so as to form a guiding inclined surface at the end of the third sealing ring 12, so that the third sealing ring 12 can be more smoothly mounted on the periphery of the container body 40.

[0076] In some embodiments, the third sealing ring 12 also includes a second sealing portion 123 arranged on a side of the accommodating portion 121 away from the second protrusion 122, and the second sealing portion 123 gradually tilts inward in a direction away from the accommodating portion 121, and the second sealing portion 123 is pressed against the outer side of the container body 40.

[0077] By providing the second sealing portion 123, the first sealing portion 111 can be used to seal the inner side of the container body 40, and the second sealing portion 123 can be used to seal the outer side of the container body 40, thereby achieving double sealing inside and outside, and greatly improving the sealing effect. The second sealing portion 123 gradually tilts inward in a direction away from the accommodating portion 121, so that the end of the second sealing portion 123 away from the accommodating portion 121 can be pressed against the outer side of the container body 40, thereby achieving a sealing effect.

[0078] In some embodiments, the third sealing ring 12 further includes a third guide portion 124 disposed on a side of the second protruding portion 122 away from the accommodating portion 121 , and an inner side surface of the third guide portion 124 gradually tilts outward in a direction away from the second protruding portion 122 .

[0079] By providing the third guide portion 124 , the third sealing ring 12 can be more smoothly fitted onto the outer circumference of the container body 40 .

[0080] In some embodiments, a convex rib 13 is disposed on an end surface of the first cover body 10 close to the second cover body 30 , and the convex rib 13 contacts an inner end surface of the second cover body 30 .

[0081] By providing the convex rib 13 , the top end surface of the first cover body 10 and the inner end surface of the second cover body 30 can be in close contact, thereby achieving sealing between the first cover body 10 and the second cover body 30 .

[0082] In some embodiments, the ribs 13 are continuous in the circumferential direction to form an annular rib. The ribs 13 are annular, which can ensure full sealing in the circumferential direction.

[0083] In some embodiments, the tops of the first sealing ring 11 and the third sealing ring 12 are connected, and the rib 13 can be set at the connecting position between the first sealing ring 11 and the third sealing ring 12, or at the connecting position between the third sealing ring 12 and the first cover body 16 of the first cover body 10.

[0084] In some embodiments, the first cover body 10 includes a sealing disk 14 disposed at the center of the first sealing ring 11 , and the pull ring 20 is installed on the sealing disk 14 .

[0085] By providing the sealing disk 14 , the first cover body 10 can seal the container body 40 .

[0086] In some embodiments, the pull ring 20 includes a connecting portion 21 and a pulling portion 22 , the connecting portion 21 is connected to the sealing disk 14 , and a preset gap is provided between the pulling portion 22 and the sealing disk 14 .

[0087] When one wants to pull up the pull ring 20 to open the first cover body 10 , the pull portion 22 may be hooked and pulled upward to separate the pull ring 20 from the first cover body 10 , thereby achieving the purpose of opening the first cover body 10 .

[0088] There is a preset gap between the pulling portion 22 and the sealing disk 14, so that the operator can grasp the pulling portion 22 and apply force to pull it upward.

[0089] In some embodiments, the connection between the connection part 21 and the sealing disk 14 is rounded. This configuration is conducive to enhancing the connection reliability between the connection part 21 and the sealing disk 14, and preventing the connection part 21 from being broken by excessive force when the pull ring 20 is pulled up, affecting the overall separation of the pull ring 20.

[0090] In some embodiments, the pull ring 20 further includes two reinforcing ribs 141 connected between the connecting portion 21 and the sealing disk 14 , and the two reinforcing ribs 141 are respectively disposed on the inner side and the outer side of the connecting portion 21 .

[0091] By providing two reinforcing ribs 141 , the connection reliability between the connecting portion 21 and the sealing disk 14 can be improved, and the tensile strength of the connecting portion 21 can be enhanced to prevent the connecting portion 21 from being broken due to excessive force when pulling up the pull ring 20 , thereby affecting the overall detachment of the pull ring 20 .

[0092] In other embodiments, the number of the reinforcing ribs 141 may also be three, four or more. When the number of the reinforcing ribs 141 is an even number, the plurality of reinforcing ribs 141 may be symmetrically arranged on the inner side and the outer side of the connecting portion 21, so that the connecting portion 21 can maintain uniform force on both sides when being pulled, thereby preventing the connecting portion 21 from breaking due to uneven force.

[0093] In some embodiments, a boss 142 is provided on the side of the sealing disk 14 away from the pull ring 20 , and the boss 142 is arranged at a position opposite to the connecting portion 21 .

[0094] By providing the boss 142 , the strength of the connection between the connection portion 21 and the sealing disk 14 can be enhanced, the tensile strength of the connection portion 21 can be improved, and the connection portion 21 can be prevented from being broken due to excessive force.

[0095] By providing the boss 142, when the first cover body 10 is manufactured by integral injection molding, the molding process window can be enlarged, so that more injection material flows to the position where the pull ring 20 is formed, ensuring that the material of the pull ring 20 is sufficient, which is beneficial to the quality stability of the product during mass production.

[0096] The boss 142 protrudes from the side of the sealing disk 14 away from the pull ring 20 in a direction away from the pull ring 20 , and the outer side surface of the boss 142 can be a plane or a curved surface.

[0097] In some embodiments, a third protrusion 143 is provided on the side of the sealing disk 14 away from the pull ring 20. The third protrusion 143 can be provided at the center of the sealing disk 14 so that the injection material can flow evenly to various positions when the sealing cover is manufactured by injection molding.

[0098] In some embodiments, the thickness of the pull-up portion 22 increases first and then decreases in the direction close to the sealing disk 14. The advantage of such a configuration is that it is convenient for product molding and demoulding during manufacturing.

[0099] In some embodiments, a width increasing portion 23 is provided at a position of the pull-up portion 22 opposite to the connecting portion 21. By providing the width increasing portion 23, the width of the position of the pull-up portion 22 opposite to the connecting portion 21 can be increased, so as to increase the contact area between the finger and the pull ring 20 during use, thereby reducing the pinching pain of the finger.

[0100] The position of the pulling portion 22 opposite to the connecting portion 21 means that the position is symmetrical with the connecting portion 21 about the center of the circle on the circumference.

[0101] In some embodiments, the first cover body 10 further includes a connecting rib 15 connecting the first sealing ring 11 and the sealing disk 14. By providing the connecting rib 15, the function of connecting the first sealing ring 11 and the sealing disk 14 can be achieved, and when the pull ring 20 is pulled up, the pull ring 20 can be separated from the first cover body 10 by destroying the connecting rib 15.

[0102] In some embodiments, the connecting rib 15 includes a first rib portion and a second rib portion, the pull ring 20 includes a connecting portion 21 and a pulling portion 22, the connecting portion 21 is connected to the sealing disk 14, and there is a preset gap between the pulling portion 22 and the sealing disk 14, the first rib portion includes a first portion of the connecting rib 15 corresponding to the connecting portion 21 in the circumferential direction and a second portion corresponding to a position relative to the connecting portion 21, the second rib portion includes a third portion and a fourth portion of the connecting rib 15 located between the first portion and the second portion, and the thickness of the first rib portion is less than the thickness of the second rib portion.

[0103] In the circumferential direction, the first portion and the second portion are symmetrical about the center of the circle, and the third portion and the fourth portion are symmetrical about the center of the circle.

[0104] When the pull ring 20 is pulled up, the first part is the first to be destroyed, the second part is the last to be destroyed, and the third part and the fourth part are located in the middle. By setting the thickness of the first rib to be smaller than the thickness of the second rib, the pulling force at the moment of opening and at the end can be reduced, so that the force of the entire opening process is relatively uniform and comfortable.

[0105] like Figure 5 As shown, in some embodiments, the thickness of the connecting rib 15 is less than the thickness of the sealing disk 14, and a first groove 151 is formed between the first sealing ring 11 and the sealing disk 14 on the side of the connecting rib 15 close to the pull ring 20; a second groove 152 is formed between the first sealing ring 11 and the sealing disk 14 on the side of the connecting rib 15 away from the pull ring 20; in a direction perpendicular to the sealing disk 14, the first groove 151 and the second groove 152 have an overlapping portion, and the first groove 151 is biased toward the side close to the pull ring 20 relative to the second groove 152.

[0106] By setting the first groove 151 to be closer to the pull ring 20 relative to the second groove 152, the first groove 151 and the second groove 152 overlap and staggered in the vertical direction, so that when the pull ring 20 is pulled up to break the connecting rib 15, it can be more decisive and the cross section is cleaner.

[0107] In some embodiments, the circumferential side of the sealing disk 14 includes a first side 144 and a second side 145 respectively located on both sides of the connecting rib 15, and the first side 144 is inclined along the direction away from the connecting rib 15 toward the direction close to the center of the sealing disk 14; and / or the second side 145 is inclined along the direction away from the connecting rib 15 toward the direction close to the center of the sealing disk 14.

[0108] The first side surface 144 and the second side surface 145 are arranged as inclined surfaces, which provide support for the first groove 151 and the second groove 152 to overlap and stagger with each other in the vertical direction. The inclined surface arrangement is also beneficial to keeping the cross section of the connecting rib 15 clean when it breaks.

[0109] In some embodiments, the inclination of the first side surface 144 is greater than the inclination of the second side surface 145. This configuration is conducive to achieving that the first groove 151 is biased toward the side close to the pull ring 20 relative to the second groove 152.

[0110] In some embodiments, the second cover body 30 is made of plastic material; and / or, the second cover body 30 is made of metal material, and the sealing cover further includes a gasket, which is disposed inside the second cover body 30 .

[0111] like Fig. 9 and Fig.10As shown, when the second cover body 30 is made of metal material, by providing a gasket, the close contact between the first cover body 10 and the second cover body 30 can be maintained, thereby improving the sealing effect.

[0112] Based on the above sealing cover, the present invention further provides a container, which includes the above sealing cover.

[0113] The container comprises a container body, and a sealing cover is sealingly mounted on the container body.

[0114] The positive technical effects of the sealing cover in the above-mentioned embodiments are also applicable to the container and will not be described in detail here.

[0115] The following is combined with Figures 1 to 10 The structures of some embodiments of the sealing cover of the present invention are described as follows:

[0116] like Figure 1 and Figure 2 As shown, the container includes a first cover 10, a pull ring 20, a second cover 30 and a container body 40. The pull ring 20 is arranged on the top of the first cover 10, the second cover 30 is sealed and installed on the first cover 10, and the first cover 10 is sealed and installed on the container body 40.

[0117] The container body 40 is cylindrical, and the opening of the container body 40 is circular. The first cover 10 and the second cover 30 match the opening shape of the container body 40, and are also circular.

[0118] like Figure 3 As shown, the second cover body 30 is mounted on the outside of the first cover body 10 to form a sealing cover.

[0119] like Figure 4 and Figure 5 As shown, the first cover body 10 includes a first sealing ring 11 , a third sealing ring 12 , a convex rib 13 , a sealing disk 14 , a connecting rib 15 and a first cover body 16 .

[0120] The first cover body 16 is cylindrical, and the opening of the first cover body 16 faces downward. The first cover body 16 includes a top and a circumferential annular portion, which is perpendicular to the top and has a certain height, and a receiving space is formed inside the annular portion.

[0121] The first sealing ring 11 , the third sealing ring 12 , the sealing disk 14 , the connecting rib 15 and the pull ring 20 are all arranged in the accommodating space of the first cover body 16 .

[0122] The first sealing ring 11 and the third sealing ring 12 are both annular in shape. The first sealing ring 11 and the third sealing ring 12 are both perpendicular to the top of the first cover body 16, and the first sealing ring 11 and the third sealing ring 12 have a certain height.

[0123] The third sealing ring 12 is located at the inner ring of the annular portion of the first cover body 16 , and the first sealing ring 11 is located at the inner ring of the third sealing ring 12 .

[0124] The rib 13 is annular and is disposed on the top surface of the first cover body 10 .

[0125] The outer circumferential surface of the first cover body 16 is provided with a first thread 161, and the first thread 161 cooperates with the second thread 331 provided on the inner circumferential surface of the second cover body 30, so that the first cover body 10 and the second cover body 30 are connected by threads. As the first thread 161 and the second thread 331 are engaged, the inner side of the top surface of the second cover body 30 and the convex rib 13 on the top surface of the first cover body 10 form an interference fit, which plays a sealing role between the first cover body 10 and the second cover body 30.

[0126] In a direction from the top of the first cover body 16 to the opening, the first sealing ring 11 includes a first sealing portion 111 , a first guiding portion 112 , and a second guiding portion 113 which are sequentially arranged.

[0127] The first sealing portion 111 forms an interference fit with the innermost side of the opening of the container body 40, which seals the first cover 10 and the container body 40. The first guide portion 112 and the second guide portion 113 are offset inward relative to the first sealing portion 111 to reduce the diameters of the first guide portion 112 and the second guide portion 113. When the first cover 10 is pressed into the container body 40, the resistance of the first cover 10 to the container body 40 during the upward movement of the container body 40 relative to the first cover 10 can be reduced, and at the same time, it plays a guiding role, which is conducive to capping and reduces the possibility of capping falling off and capping being distorted.

[0128] In the direction from the top of the first cover body 16 to the opening, the third sealing ring 12 includes a second sealing portion 123 , a receiving portion 121 , a second protruding portion 122 and a third guiding portion 124 which are arranged in sequence.

[0129] like Figure 6 and Figure 7 As shown, the receiving portion 121 is used to wrap and receive the convex ring 41 provided at the open end of the container body 40, and the second protrusion 122 fits with the lower semicircular arc of the receiving convex ring 41 and is used to lock the convex ring 41, so that it is not easy for the first cover body 10 and the container body 40 to move relative to each other, and the first cover body 10 is not easy to be pulled off the container body 40. The receiving portion 121 and the second protrusion 122 together fix and prevent the container body 40 from falling off. When the first cover body 10 is pressed into the opening of the container body 40, the third guide portion 124 guides the first cover body 10 to cooperate with the opening of the container body 40 to prevent the cover from falling off.

[0130] The second sealing portion 123 gradually tilts inward from bottom to top, and the formed inclined surface can be pressed against the outer side of the container body 40. After the first cover body 10 seals the opening of the container body 40, the inclined surface forms an interference fit with the convex ring 41 to achieve a sealing effect on the outer side of the container body 40.

[0131] The first cover 10 forms at least two seals on the container body 40 , namely, the first sealing portion 111 forms an extrusion seal on the inner side of the container body 40 and the second sealing portion 123 forms an extrusion seal on the outer side of the container body 40 .

[0132] The sealing disc 14 is circular, and is arranged substantially parallel to the top of the first cover body 16. The sealing disc 14 is disposed inside the first sealing ring 11, and the pull ring 20 is mounted on the side of the sealing disc 14 close to the top of the first cover body 16. The sealing disc 14 is connected to the opening of the first sealing ring 11 close to the first cover body 16 through the connecting rib 15, so that there is a certain height between the sealing disc 14 and the top of the first cover body 16, forming a space for accommodating the pull ring 20, and the top of the pull ring 20 does not exceed the top of the first cover body 16.

[0133] The pull ring 20 is circular in shape. The thickness of the pull ring 20 decreases from thick to thin from top to bottom, which is conducive to molding and demoulding. The pull ring 20 is widened at the tail of the pull ring 20 to increase the contact area between the finger and the pull ring 20 during use, thereby reducing the pain of the finger.

[0134] The pull ring 20 includes a connecting portion 21 connected to the sealing disk 14 and a pulling portion 22 with a preset gap between the pulling portion 21 and the sealing disk 14 .

[0135] A rounded structure is provided between the connecting portion 21 and the sealing disk 14. Figure 2 As shown, two reinforcing ribs 141 are symmetrically arranged between the connecting portion 21 and the sealing disk 14, the purpose of which is to increase the tensile strength of the connecting portion 21 to prevent the connecting portion 21 from being broken due to excessive force when the pull ring 20 is pulled up.

[0136] The lower end surface of the sealing disk 14 is provided with a first boss 142 below the connection portion 21, which can enhance the tensile strength of the connection portion 21 and increase the molding process window, which is beneficial to the quality stability of the product during mass production. The sealing disk 14 is also provided with a third protrusion 143 at the center.

[0137] like Figure 2 As shown, the upper surface of the sealing disk 14 is provided with an “OPEN” mark indicating opening and an arrow mark indicating the pulling direction, so as to avoid the problem of applying the force in the wrong direction when using the pull ring 20 .

[0138] The thickness of the connecting rib 15 between the sealing disk 14 and the first sealing ring 11 is gradually changed. The thickness of the connecting rib 15 is between 0.1-0.2 mm. The thickness of the connecting rib 15 on one side and the opposite side of the connecting portion 21 is slightly thinner, and the thickness in the vertical direction is slightly thicker. The function is that when the pull ring 20 is pulled up to open the sealing disk, the thinner thickness can reduce the pulling force at the moment of opening and at the end, so that the force of the entire opening process is relatively uniform and comfortable.

[0139] like Figure 5 As shown, the cross-sectional structure at the connecting rib 15 is similar to an "H" shape, and the first groove 151 and the second groove 152 formed on both sides of the connecting rib 15 are offset left and right, and the sealing disk 14 has a certain inclination on the upper and lower outer sides of the connecting rib 15, and the sealing disk 14 forms a left and right offset on the upper and lower sides when it is close to the connecting rib 15. The function of the offset formed when the pull ring 20 is pulled up to break the connecting rib 15 is that the connecting rib 15 can be broken more crisply and the cross section is cleaner.

[0140] like Figure 8 As shown, the second cover body 30 includes a second sealing ring 31, a cover top 32 and a cover ring portion 33. The cover top 32 and the cover ring portion 33 constitute the main body of the second cover body 30, forming a structure with an opening and a receiving space. The second sealing ring 31 is arranged in the receiving space, and the second sealing ring 31 and the cover ring portion 33 are both perpendicular to the cover top 32. The second sealing ring 31 extends from the cover top 32 toward the direction close to the opening.

[0141] When the second cover body 30 is put on the outside of the first cover body 10 and the second cover body 30 is sealed and connected to the first cover body 10 by screwing, the second sealing ring 31 is inserted into the inner side of the first sealing ring 11, and the first protrusion 311 provided on the second sealing ring 31 presses against the inner side of the first sealing ring 11, forming an extrusion effect on the first sealing ring 11, so that the first sealing ring 11 is close to the inner wall of the container body 40, thereby realizing the sealing of the first cover body 10 by the second cover body 30. Even after the pull ring 20 is pulled off, the container body 40 can still be sealed to effectively block water vapor, oxygen, etc., and keep the items in the container body 40 fresh; the first protrusion 311 can also enhance the sealing effect of the second sealing ring 31 on the inner wall of the container body 40.

[0142] The inner wall of the cover ring portion 33 is provided with a second thread 331 which cooperates with the first thread 161 provided on the outer circumference of the first cover body 10 .

[0143] The material of the container body 40 can be metal, plastic or glass, etc. The first cover body 10 is made of a plastic material (such as a combination of soft and hard resin materials) in one piece.

[0144] In such Figures 1 to 8In the embodiment shown, the second cover body 30 is made of plastic material in one piece. The outer periphery of the second cover body 30 is provided with anti-slip teeth.

[0145] In such Fig. 9 and Fig.10 In the embodiment shown, it is similar to Figures 1 to 8 The main difference between the illustrated embodiments is that the second cover 30 is made of metal material. Fig.10 It can be clearly seen that since it is necessary to set a second thread 331 on the inner side surface of the cover ring portion 33 of the second cover body 30 to match the first thread 161 on the outer side surface of the first cover body 10, and since the second cover body 30 is made of metal material, the outer side surface of the cover ring portion 33 also forms an uneven arc surface following the convexity and concavity of the second thread 331.

[0146] Since the second cover body 30 is made of metal material, in order to improve the sealing between the first cover body 10 and the second cover body 30, a gasket can be set inside the second cover body 30. When the second cover body 30 is screwed onto the first cover body 10, the gasket is in close contact with the rib 13 on the first cover body 10, effectively ensuring the sealing.

[0147] The outer side surface of the cover ring portion 33 of the second cover body 30 is provided with anti-skid lines. The gasket can be circular, and the gasket diameter is consistent with the circumference of the inner top surface of the second cover body 30 and is firmly engaged under the action of the anti-skid teeth.

[0148] The gasket can be made of paper, rubber or soft plastic. As the first thread 161 and the second thread 331 are engaged, the soft gasket on the inner side of the second cover 30 forms a linear interference seal with the rib 13 on the top surface of the first cover 10, which can provide a better sealing effect on the first cover 10 and the second cover 30 than a surface seal.

[0149] Through the description of multiple embodiments of the sealing cover of the present invention, it can be seen that the sealing cover embodiments of the present invention have at least one or more of the following advantages:

[0150] 1. The overall structure of the sealing cover is relatively novel. Compared with the sealing film packaging on the market, it is more convenient and comfortable to use. The package can be opened by gently pulling the pull ring with one finger;

[0151] 2. The sealing cover adopts double sealing of the first cover body and the second cover body, which can effectively ensure good sealing during the consumption of the product;

[0152] 3. The first cover and the container body adopt a press-in seal, which is more efficient than the threaded cover, and the opening of the container body adopts double seals on the inside and outside to ensure good sealing and barrier properties;

[0153] 4. By setting the thickness of the connecting ribs, the opening force is made more uniform and moderate;

[0154] 5. By setting the structure of the connection position between the connecting rib and the first sealing ring and the sealing disc, the material section can be made clean and have a good consumer experience;

[0155] 6. Opening prompts and direction prompts are provided on the upper surface of the first cover body, making the consumer experience more friendly.

[0156] The above description of various embodiments tends to emphasize the differences between the various embodiments. The same or similar aspects can be referenced to each other, and for the sake of brevity, they will not be repeated herein.

[0157] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that without departing from the principles of the present invention, the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents, and these modifications and equivalent replacements should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A sealing cover, characterized in that: include: A first cover (10) is sealingly mounted on the container body (40); A pull ring (20) is installed on the first cover (10), and the pull ring (20) is configured to be pulled up to open the first cover (10); and The second cover body (30) is sealingly mounted on the first cover body (10).

2. The sealing cover according to claim 1, characterized in that: The first cover body (10) comprises a first sealing ring (11), the first sealing ring (11) is inserted into the container body (40), and the first sealing ring (11) is closely attached to the inner wall of the container body (40) to achieve sealing of the container body (40).

3. The sealing cover according to claim 2, characterized in that: The first sealing ring (11) comprises a first sealing portion (111) and a guiding portion, wherein the diameter of the first sealing portion (111) is larger than the diameter of the guiding portion, the first sealing portion (111) is configured to be closely attached to the inner wall of the container body (40), and the guiding portion is configured to enable the first sealing ring (11) to smoothly enter the container body (40).

4. The sealing cover according to claim 3, characterized in that: The guide portion comprises a first guide portion (112) and a second guide portion (113); the first guide portion (112) is connected between the first sealing portion (111) and the second guide portion (113); the thickness of the first guide portion (112) is fixed; and the outer side surface of the second guide portion (113) gradually tilts inward in a direction away from the first guide portion (112).

5. The sealing cover according to claim 2, characterized in that: The second cover body (30) comprises a second sealing ring (31), and a first protrusion (311) is provided on the outer side of the second sealing ring (31). The first protrusion (311) is configured to abut against the inner side of the first sealing ring (11) to achieve sealing of the first cover body (10) by the second cover body (30).

6. The sealing cover according to claim 1, characterized in that: The first cover body (10) comprises a third sealing ring (12), and the third sealing ring (12) is sleeved on the outside of the container body (40) to achieve the connection between the first cover body (10) and the container body (40).

7. The sealing cover according to claim 6, characterized in that: The third sealing ring (12) comprises a receiving portion (121) and a second protruding portion (122), wherein the receiving portion (121) is used to receive a protruding ring (41) disposed at the opening of the container body (40), and the second protruding portion (122) is inserted into a side of the protruding ring (41) away from the opening to prevent the first cover body (10) from being separated from the container body (40).

8. The sealing cover according to claim 7, characterized in that: The third sealing ring (12) also includes a second sealing portion (123) arranged on a side of the accommodating portion (121) away from the second protruding portion (122), and the second sealing portion (123) gradually tilts inward in a direction away from the accommodating portion (121), and the second sealing portion (123) is pressed against the outer side of the container body (40).

9. The sealing cover according to claim 7, characterized in that: The third sealing ring (12) further comprises a third guide portion (124) arranged on a side of the second protruding portion (122) away from the accommodating portion (121), and an inner side surface of the third guide portion (124) gradually tilts outwards in a direction away from the second protruding portion (122).

10. The sealing cover according to claim 1, characterized in that: The end surface of the first cover body (10) close to the second cover body (30) is provided with a convex rib (13), and the convex rib (13) is in contact with the inner end surface of the second cover body (30).

11. The sealing cover according to claim 2, characterized in that: The first cover body (10) comprises a sealing disk (14) arranged at the center of the first sealing ring (11), and the pull ring (20) is installed on the sealing disk (14).

12. The sealing cover according to claim 11, characterized in that: The pull ring (20) comprises a connecting portion (21) and a pulling portion (22); the connecting portion (21) is connected to the sealing disk (14); and a preset gap is provided between the pulling portion (22) and the sealing disk (14).

13. The sealing cover according to claim 12, characterized in that: A rounded transition is adopted at the connection between the connection portion (21) and the sealing disk (14).

14. The sealing cover according to claim 12, characterized in that: The pull ring (20) further comprises two reinforcing ribs (141) connected between the connecting portion (21) and the sealing disk (14), and the two reinforcing ribs (141) are respectively arranged on the inner side and the outer side of the connecting portion (21).

15. The sealing cover according to claim 12, characterized in that: A boss (142) is provided on the side of the sealing disk (14) away from the pull ring (20), and the boss (142) is arranged at a position opposite to the connecting portion (21).

16. The sealing cover according to claim 12, characterized in that: The thickness of the pulling portion (22) first increases and then decreases in a direction approaching the sealing disk (14).

17. The sealing cover according to claim 12, characterized in that: A width increasing portion (23) is provided at a position of the pulling portion (22) opposite to the connecting portion (21).

18. The sealing cover according to claim 11, characterized in that: The first cover body (10) further comprises a connecting rib (15) connecting the first sealing ring (11) and the sealing disk (14).

19. The sealing cover according to claim 18, characterized in that: The connecting rib (15) includes a first rib portion and a second rib portion, the pull ring (20) includes a connecting portion (21) and a pulling portion (22), the connecting portion (21) is connected to the sealing disk (14), and a preset gap is provided between the pulling portion (22) and the sealing disk (14), the first rib portion includes a first portion of the connecting rib (15) corresponding to the connecting portion (21) in the circumferential direction and a second portion corresponding to a position opposite to the connecting portion (21), the second rib portion includes a third portion and a fourth portion of the connecting rib (15) located between the first portion and the second portion, and the thickness of the first rib portion is less than the thickness of the second rib portion.

20. The sealing cover according to claim 18, characterized in that: The thickness of the connecting rib (15) is smaller than the thickness of the sealing disk (14); on the side of the connecting rib (15) close to the pull ring (20), a first groove (151) is formed between the first sealing ring (11) and the sealing disk (14); on the side of the connecting rib (15) away from the pull ring (20), a second groove (152) is formed between the first sealing ring (11) and the sealing disk (14); in a direction perpendicular to the sealing disk (14), the first groove (151) and the second groove (152) have an overlapping portion, and the first groove (151) is biased towards the side close to the pull ring (20) relative to the second groove (152).

21. The sealing cover according to claim 18, characterized in that: The circumferential side surface of the sealing disk (14) includes a first side surface (144) and a second side surface (145) respectively located on both sides of the connecting rib (15), wherein the first side surface (144) is inclined from a direction away from the connecting rib (15) to a direction close to the center of the sealing disk (14); and / or the second side surface (145) is inclined from a direction away from the connecting rib (15) to a direction close to the center of the sealing disk (14).

22. The sealing cover according to claim 21, characterized in that: The inclination of the first side surface (144) is greater than the inclination of the second side surface (145).

23. The sealing cover according to claim 1, characterized in that: The second cover body (30) is made of plastic material; and / or the second cover body (30) is made of metal material, and the sealing cover further comprises a gasket, which is arranged inside the second cover body (30).

24. A container, characterized in that: Comprising the sealing cover according to any one of claims 1 to 23.

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