Lid and packaging container

Abstract

The present invention discloses a lid and a packaging container. The lid comprises a lower lid, an upper lid, a pressing portion, and a hollow sliding core. The lower lid comprises a shell and a receiving portion, the receiving portion being arranged on the shell and accommodating an elastic member. The upper lid is buckled onto the lower lid and rotatably connected to the shell. The upper lid is provided with a first engaging portion. The pressing portion is arranged on the shell and provided with a second engaging portion, the second engaging portion being capable of engaging or disengaging with the first engaging portion so that the upper lid and the lower lid are buckled or relatively rotatable. An abutting portion is formed on the outer wall of the sliding core, and the sliding core is inserted into the elastic member so that the abutting portion abuts against the elastic member. When the upper lid and the lower lid are buckled, the upper lid presses on the top of the sliding core so that the sliding core can compress the elastic member in the axial direction of the shell. When the upper lid and the lower lid are relatively rotatable, the sliding core can move in the axial direction of the shell under the action of elastic force so that the hollow inner cavity of the sliding core is connected to the liquid inlet. The lid can ensure the cleanliness of the opening and has a good use effect.

Description

Technical Field

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

[0002] With the increasing consumption of food, beverages, medicines, and daily chemical products, many products need to be packaged in bottles, cans, and other containers. Lids are an important part of packaging, as they have the ability to keep the contents sealed.

[0003] With the continuous introduction of innovative packaging for cosmetics, pharmaceuticals, and other products on the market, users are placing increasingly high demands on packaging containers. To access the contents of currently used packaging containers, one must open the lid, squeeze a certain amount of the contents out of the container, and then use their hands to capture the squeezed contents. However, when accessing the contents from the packaging container, it is inevitable that some contents will remain on the edge of the lid opening, affecting the cleanability of the lid and resulting in poor overall user experience. Summary of the Invention

[0004] The present invention provides a cover and a packaging container, so as to improve the use effect of the packaging container.

[0005] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0006] A first aspect of the technical solution of the present invention provides a cover, comprising:

[0007] A lower cover, the lower cover comprising a shell and a receiving portion, the receiving portion being arranged on the shell along the axial direction of the shell, the top of the receiving portion being open and at least one liquid inlet being formed on a side wall of the receiving portion, and an elastic member being accommodated in the receiving portion;

[0008] an upper cover, the upper cover being buckled on the lower cover and rotatably connected to the housing, and the upper cover being provided with a first locking portion;

[0009] a pressing portion, the pressing portion being disposed on the housing and having a second engaging portion thereon, the second engaging portion being capable of engaging with the first engaging portion to engage the upper cover with the lower cover; the pressing portion being capable of moving in a radial direction of the housing to separate the second engaging portion from the first engaging portion and to enable the upper cover and the lower cover to rotate relative to each other;

[0010] A hollow sliding core, an abutment portion is formed on the outer wall of the sliding core, and the sliding core is inserted into the elastic member so that the abutment portion abuts against the elastic member; when the upper cover and the lower cover are buckled, the upper cover is pressed on the top of the sliding core so that the sliding core can compress the elastic member along the axial direction of the shell; when the upper cover and the lower cover can rotate relative to each other, the sliding core can move along the axial direction of the shell under the elastic force of the elastic member, so that the hollow inner cavity of the sliding core is communicated with the liquid inlet of the accommodating portion.

[0011] Preferably, the shell includes an outer shell and an inner shell, the axis of the outer shell coincides with the axis of the inner shell; the outer shell is rotatably connected to the upper cover, the accommodating portion is arranged on the inner shell along the axial direction of the inner shell, and the inner shell is used to connect to the container body.

[0012] Preferably, a limiting portion is formed on the inner wall of the top of the accommodating portion, and when the upper cover and the lower cover are able to rotate relative to each other, the sliding core can move a set distance along the axial direction of the inner shell under the elastic force of the elastic member, so that the abutting portion abuts against the limiting portion.

[0013] Preferably, a sealing portion is provided at the bottom of the accommodating portion, and when the upper cover and the lower cover are buckled together, the bottom opening of the sliding core is sleeved on the sealing portion and has an interference fit with the sealing portion.

[0014] Preferably, the diameter of the accommodating portion gradually increases from the end farthest from the upper cover to the end near the upper cover, so that the outer wall of the accommodating portion can be interference-fitted with the inner wall of the container body.

[0015] Preferably, the pressing portion includes a pressing block and two elastic arms, the second engaging portion is provided on the top of the pressing block, and the two elastic arms are respectively provided on both sides of the pressing block; each elastic arm has a protrusion at one end away from the pressing block, and a slot is formed on the inner wall of the outer shell, and the protrusion can be engaged with the slot to connect the pressing portion to the outer shell;

[0016] The bending direction of the elastic arm is toward the center of the outer shell, so that the elastic arm can drive the pressing block to move elastically along the radial direction of the outer shell.

[0017] Preferably, an annular groove is further provided on the outer wall of the sliding core, a sealing ring is provided in the annular groove, and the sealing ring is located between the sliding core and the inner wall of the accommodating portion;

[0018] Alternatively, an annular sealing portion is formed on the inner wall of the accommodating portion, the sliding core is inserted into the accommodating portion, and the outer wall of the sliding core is interference-fitted with the annular sealing portion.

[0019] Preferably, an elastic pressure head is provided on the upper cover at a position corresponding to the sliding core. When the upper cover and the lower cover are buckled together, the elastic pressure head presses on the top of the sliding core so that the sliding core can compress the elastic part along the axial direction of the shell.

[0020] The second aspect of the technical solution of the present invention provides a packaging container, including a container body and the lid, the shell is connected to the container body, and the accommodating portion is correspondingly arranged in the mouth of the container body and seals the mouth of the container body; when the upper cover and the lower cover are buckled together, the contents in the container body are sealed inside the container body, and when the upper cover and the lower cover can rotate relative to each other, the contents in the container body can be squeezed out from the liquid inlet through the hollow cavity of the sliding core.

[0021] Among them, the more preferred one is that a limiting groove is provided on the outer wall of the mouth of the container body, and a limiting protrusion is provided on the inner wall of the shell. When the shell is connected to the container body, the limiting protrusion engages with the limiting groove to limit the relative position of the shell and the container body.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The lid provided by the technical solution of the present invention can be installed on the container body when in use, and the mouth of the container body can be sealed by using the accommodating portion. When not in use, the upper cover and the lower cover are in a buckled state. At this time, the upper cover is pressed on the top of the sliding core to seal the hollow sliding core to prevent the contents of the container body from flowing out. When it is necessary to take out the contents of the container body, the pressing portion can be pressed along the radial direction of the shell so that the second locking portion on the pressing portion is separated from the first locking portion on the upper cover. At this time, the upper cover and the lower cover are in a buckled state. In the relatively rotatable state, that is, the upper cover no longer presses the sliding core, the sliding core can move along the axial direction of the shell under the elastic force of the elastic member, thereby protruding a certain distance, so that the hollow inner cavity of the sliding core is connected to the liquid inlet on the side wall of the accommodating portion. At this time, the container body is squeezed, and the contents are squeezed out from the liquid inlet through the hollow inner cavity of the sliding core. The user can take an appropriate amount of the contents. When the contents are taken out, the squeezing of the container body is released, the container body returns to its original state, and accordingly, the contents are sucked back into the container body to avoid waste of the contents. When using this lid to take the contents of the container body, since the sliding core protrudes a certain distance, the contents squeezed out of the container body are not likely to drip onto the edge of the lid during use, thereby ensuring the cleanliness of the lid, improving the use effect of the lid, and providing a better user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural diagram of a lid in a closed state provided by an embodiment of the present invention;

[0025] Figure 2 This is a structural diagram of a lid in an open state provided by an embodiment of the present invention;

[0026] Figure 3 This is a schematic cross-sectional view of a lid in an open state provided by an embodiment of the present invention;

[0027] Figure 4 This is an exploded view of a cover provided by an embodiment of the present invention;

[0028] Figure 5 1 is a schematic diagram of the cross-sectional structure of the vertical section of the lower cover;

[0029] Figure 6 1 is a schematic diagram of the cross-sectional structure of the lower cover;

[0030] Figure 7 Schematic diagram of the cross-sectional structure of the upper cover;

[0031] Figure 8 It is a schematic diagram of the cross-section joint of the sliding core;

[0032] Figure 9 is a schematic diagram of a partial cross-sectional structure of another lid provided by an embodiment of the present invention;

[0033] Figure 10 2. It is a structural diagram of the pressing part;

[0034] Figure 11 This is a schematic structural diagram of a packaging container provided by an embodiment of the present invention;

[0035] Figure 12 is a schematic cross-sectional view of a packaging container provided by an embodiment of the present invention;

[0036] Figure 13 It is a schematic diagram of the partially enlarged structure of the container body.

[0037] In the accompanying drawings, each reference numeral represents:

[0038] 1. Lower cover; 11. Housing; 12. Accommodation portion; 111. Outer housing; 112. Inner housing; 121. Liquid inlet; 122. Limiting portion; 123. Sealing portion; 1111. Slot; 113. Limiting protrusion;

[0039] 2. Upper cover; 21. First engaging portion; 22. Elastic pressure head;

[0040] 3. Pressing portion; 31. Second engaging portion; 32. Pressing block; 33. Elastic arm; 331. Protruding portion;

[0041] 4. Sliding core; 41. Abutment portion; 42. Hollow inner cavity; 43. Annular groove;

[0042] 5. Elastic part; 6. Pin hole; 7. Pin; 8. Sealing ring; 100. Container body; 101. Limiting groove; 200. Lid. DETAILED DESCRIPTION

[0043] In order to make the purposes, features, and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described 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 those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0044] Example 1:

[0045] Please refer to Figure 1 and Figure 2 As shown, a cover provided by the technical solution of the present invention comprises: a lower cover 1, an upper cover 2, a pressing portion 3 and a hollow sliding core 4.

[0046] Continue to refer to Figure 3 and Figure 4As shown, the lower cover 1 includes a shell 11 and a receiving portion 12, the receiving portion 12 is arranged on the shell 11 along the axial direction of the shell 11, the top of the receiving portion 12 is open and at least one liquid inlet 121 is opened on the side wall of the receiving portion 12, and the elastic member 5 is placed in the receiving portion 12; the upper cover 2 is buckled on the lower cover 1 and is rotatably connected to the shell 11, with reference to Figure 7 As shown, the upper cover 2 is provided with a first engaging portion 21; the pressing portion 3 is provided on the housing 11, and the pressing portion 3 is provided with a second engaging portion 31, the second engaging portion 31 can be engaged with the first engaging portion 21, so that the upper cover 2 and the lower cover 1 are buckled; the pressing portion 3 can move along the radial direction of the housing 11, so that the second engaging portion 31 is separated from the first engaging portion 21, and the upper cover 2 and the lower cover 1 can rotate relative to each other; the outer wall of the sliding core 4 is formed with an abutment portion 41, the The sliding core 4 is arranged in the elastic member 5 so that the abutment portion 41 abuts against the elastic member 5; when the upper cover 2 and the lower cover 1 are buckled together, the upper cover 2 presses on the top of the sliding core 4 so that the sliding core 4 can compress the elastic member 5 along the axial direction of the shell 11; when the upper cover 2 and the lower cover 1 can rotate relative to each other, the sliding core 4 can move along the axial direction of the shell 11 under the elastic force of the elastic member 5, so that the hollow inner cavity 42 of the sliding core 4 is connected to the liquid inlet 121 of the accommodating portion.

[0047] In the above embodiment, when in use, the lower cover 1 of the lid can be installed on the container body, and the mouth of the container body can be sealed by using the accommodating portion 12 (see Figure 9 and Figure 10), in the non-use state, the upper cover 2 and the lower cover 1 are in a buckled state. At this time, the upper cover 2 is pressed on the top of the sliding core 4 to seal the hollow sliding core 4 to prevent the contents of the container body from flowing out; when the contents in the container body need to be taken out, the pressing part 3 can be pressed along the radial direction of the shell 11, so that the second engaging part 31 on the pressing part 3 is separated from the first engaging part 21 on the upper cover 2. At this time, the upper cover 2 and the lower cover 1 are in a relatively rotatable state, that is, the upper cover 2 no longer presses the sliding core 4, and the sliding core 4 is in the elastic part 5. Under the action of elastic force, it moves along the axial direction of the shell 11, thereby protruding a certain distance, so that the hollow inner cavity 42 of the sliding core 4 is connected with the liquid inlet 121 on the side wall of the accommodating portion 12. At this time, the container body is squeezed, and the contents are squeezed out from the liquid inlet 121 through the hollow inner cavity 42 of the sliding core 4. The user can take an appropriate amount of contents (for example: facial cleanser). When the contents are taken out, the squeezing of the container body is released, the container body returns to its original shape, and the contents are sucked back into the container body accordingly to avoid waste of the contents. When using this lid to take the contents of the container body, since the sliding core 4 will protrude a certain distance, the contents squeezed out of the container body are not easy to drip onto the edge of the lid during use, thereby ensuring the cleanliness of the lid, improving the use effect of the lid, and providing a better user experience.

[0048] Reference Figure 5 As shown, in the above embodiment, preferably, the shell 11 includes an outer shell 111 and an inner shell 112, and the axis of the outer shell 111 coincides with the axis of the inner shell 112; the outer shell 111 is rotatably connected to the upper cover 2, and the accommodating portion 12 is provided on the inner shell 112 along the axial direction of the inner shell 112, and the inner shell 112 is used to connect to the container body. Specifically, in this embodiment, the outer shell 111 and the inner shell 112 are an integrally formed structure, and the shell 11 can be formed by injection molding. The outer shell 111 and the upper cover 2 are both provided with a pin hole 6, and the outer shell 111 and the upper cover 2 are hingedly fixed by a pin 7 that is inserted into the pin hole 6 of the outer shell 111 and the upper cover 2. In this way, the firmness of the connection between the outer shell 111 and the upper cover 2 can be improved, and the outer shell 111 will not be deformed or displaced due to the long-term pushing of the elastic member 5, thereby affecting the sealing effect. Meanwhile, the inner shell 112 is used to connect to the container body. The specific connection method is not limited. For example, in this embodiment, the inner shell 112 is provided with internal threads, so that the inner shell 112 can be threadedly connected to the container body. In other embodiments, a snap can be provided on the inner shell 112 to connect to the container body through a snap-fit ​​method. In this way, the outer shell 111 can protect the inner shell 112 from damage. Even if the outer shell 111 is damaged, as long as the upper cover 2 and the lower cover 1 can be connected and fixed, the normal use of the cover will not be delayed, and the sealing of the cover will not be affected.

[0049] Continue to refer to Figure 5 As shown, in the above embodiment, preferably, a limiting portion 122 is formed on the inner wall of the top of the accommodating portion 12. When the upper cover 2 and the lower cover 1 are able to rotate relative to each other, the sliding core 4 can move a set distance along the axial direction of the inner shell 112 under the elastic force of the elastic member 5, so that the abutting portion 41 abuts against the limiting portion 122. Specifically, in this embodiment, the diameter of the top opening of the accommodating portion 12 is slightly smaller than the diameter of the abutting portion 41 of the sliding core 4. When assembling the sliding core 4, it is necessary to press the sliding core 4 into the accommodating portion 12 by external force. Figure 3 As shown, when the upper cover 2 is opened, the upper cover 2 will no longer exert a force on the sliding core 4. At this time, the sliding core 4 will move along the axial direction of the inner shell 112 under the elastic force of the elastic member 5. When the abutting portion 41 of the sliding core 4 abuts the limiting portion 122 of the accommodating portion 12, the sliding core 4 will no longer move, and the sliding core 4 moves from the position where the upper cover 2 and the lower cover 1 are buckled together to the position where the sliding core 4 is located. Figure 3 The position of the middle sliding core 4 is such that the displacement of the sliding core 4 is equal to the set distance. Thus, the position of the sliding core 4 can be limited by the limiting portion 122 to prevent the sliding core 4 from being separated from the accommodating portion 12 of the lower cover 1.

[0050] Continue to refer to Figure 5 As shown, in the above embodiment, preferably, a sealing portion 123 is provided at the bottom of the accommodating portion 12, and when the upper cover 2 and the lower cover 1 are in a buckled state, the bottom opening of the sliding core 4 is sleeved on the sealing portion 123 and has an interference fit with the sealing portion 123. Specifically, when there is no need to take the contents of the container body, the upper cover 2 and the lower cover 1 are in a buckled state. At this time, the upper cover 2 is pressed on the top of the sliding core 4, thereby sealing the top opening of the sliding core 4. At the same time, since the bottom opening of the sliding core 4 has an interference fit with the sealing portion 123 at the bottom of the accommodating portion 12, the bottom opening of the sliding core 4 can be sealed by the sealing portion 123, thereby further improving the sealing performance of the lid and ensuring that the contents in the container body will not flow out to the outside through the hollow inner cavity of the sliding core 4.

[0051] Continue to refer to Figure 5As shown, in the above embodiment, preferably, the diameter of the accommodating portion 12 gradually increases from the end farthest from the upper cover to the end near the upper cover, so that the outer wall of the accommodating portion 12 can be interference-fitted with the inner wall of the container body. Specifically, in this embodiment, the threaded connection between the inner shell 112 and the container body is taken as an example for explanation. Since the diameter of the end of the accommodating portion 12 away from the upper cover 2 is smaller, when the inner shell 112 is connected to the container body, it is convenient to insert the accommodating portion 12 into the opening of the container body; at the same time, as the inner shell 112 and the container body are gradually tightened, the end of the accommodating portion 12 close to the upper cover 2 will gradually approach the opening of the accommodating portion. In order to ensure the sealing between the accommodating portion 12 and the opening of the container body, it is necessary to increase the diameter of the accommodating portion 12 so as to be interference-fitted with the opening of the container body, so as to prevent the contents in the container body from flowing out from between the inner wall of the container body and the outer wall of the accommodating portion 12.

[0052] Reference Figure 8 As shown, in the above embodiment, preferably, an annular groove 43 is further provided on the outer wall of the sliding core 4, referring to Figure 3 As shown, a sealing ring 8 is disposed in the annular groove 43 and is located between the slide core 4 and the inner wall of the receiving portion 12. Thus, the sealing ring 8 can seal the gap between the slide core 4 and the receiving portion 12, thereby preventing the contents of the container body from flowing out of the gap between the slide core 4 and the receiving portion 12, thereby further improving the sealing performance of the lid.

[0053] In the above embodiment, preferably, the size of the liquid outlet of the sliding core 4 can be set to different diameters according to the demand for liquid output, so as to meet the usage needs of different users.

[0054] Reference Figure 9 As shown, in the above embodiment, preferably, an annular sealing portion 124 is formed on the inner wall of the accommodating portion 12, and the slide core 4 is inserted into the accommodating portion 12, with the outer wall of the slide core 4 having an interference fit with the annular sealing portion 124. In this embodiment, the annular sealing portion 124 is provided on the lower cover, thereby avoiding the need to groove the outer wall of the slide core 4 and then provide a sealing ring. In specific use, the slide core 4 is directly inserted into the accommodating portion 12, so that the outer wall of the slide core 4 and the annular sealing portion 124 have an interference fit, thereby sealing the gap between the slide core 4 and the accommodating portion 12 and improving the sealing performance of the lid. It should be noted that the slide core 4 and the inner wall of the accommodating portion 12 need to have a moderate interference fit (for example, a single-sided interference fit of less than 0.03 mm) to ensure that the slide core 4 can slide relative to the accommodating portion 12 while ensuring sufficient sealing of the lid. At the same time, in this embodiment, the annular sealing portion 124 can be integrally formed with the lower cover 1, thereby simplifying the assembly process of the lid and improving the production efficiency of the lid.

[0055] Reference Figure 10 As shown, in the above embodiment, preferably, the pressing portion 3 includes a pressing block 32 and two elastic arms 33, the top of the pressing block 32 is provided with the second engaging portion 31, and the two elastic arms 33 are respectively provided on both sides of the pressing block 32; each of the elastic arms 33 has a protrusion 331 at one end away from the pressing block 32, Figure 6 As shown, a slot 1111 is formed on the inner wall of the outer shell 111, and the protrusion 331 can be engaged with the slot 1111 to connect the pressing portion 3 to the outer shell 111; at the same time, the bending direction of the elastic arm 33 is toward the center of the outer shell 111, so that the elastic arm 33 can drive the pressing block 32 to move elastically along the radial direction of the outer shell 111. Specifically, after the pressing portion 3 is mounted on the outer shell 111, the elastic arm 33 can elastically move in the radial direction of the outer shell 111. Therefore, when the pressing block 32 is subjected to an external force, the pressing block 32 can move toward the center of the outer shell 111, thereby separating the second engaging portion 31 from the first engaging portion 21. When the external force is removed, the pressing block 32 returns to its initial position under the elastic force of the elastic arm 33. At this time, the upper cover 2 can be fastened so that the first engaging portion 21 on the upper cover 2 engages with the second engaging portion 31 to restrict the relative position of the upper cover 2 and the lower cover 1. Thus, the elastic arm 33 is utilized to enable the pressing portion 3 to elastically return to its original position, thereby improving the convenience of using the pressing portion 3.

[0056] Reference Figure 7 As shown, in the above embodiment, preferably, an elastic pressure head 22 is provided at a position on the upper cover 2 corresponding to the slide core 4. When the upper cover 2 is engaged with the lower cover 1, the elastic pressure head 22 presses on the top of the slide core 4, so that the slide core 4 can compress the elastic member 5 along the axial direction of the housing 11. Specifically, in this embodiment, the elastic pressure head 22 can be made of silicone or other elastic materials. The use of the elastic pressure head 22 can avoid wear on the slide core 4 and improve the safety of the cover.

[0057] Example 2:

[0058] Reference Figure 11 and Figure 12 As shown, the technical solution of the present invention further provides a packaging container, which includes a container body 100 and the cover 200 described in the first embodiment.

[0059] The shell 11 is connected to the container body 100, and the accommodating portion 12 is correspondingly provided in the mouth of the container body 100 and blocks the mouth of the container body 100; when the upper cover 2 and the lower cover 1 are buckled together, the contents in the container body 100 are sealed inside the container body 100, and when the upper cover 2 and the lower cover 1 are able to rotate relative to each other, the contents in the container body 100 can be squeezed out from the liquid inlet 121 through the hollow inner cavity 42 of the sliding core 4.

[0060] In the above embodiment, when in use, the contents can be loaded into the container body 100, and then the mouth of the container body 100 is sealed with the lid 200. When the contents need to be taken out, the pressing portion 3 is pressed in the radial direction of the shell 11, so that the second engaging portion 31 on the pressing portion 3 is separated from the first engaging portion 21 on the upper cover 2. At this time, the upper cover 2 and the lower cover 1 are in a relatively rotatable state, that is, the upper cover 2 no longer presses the sliding core 4, and the sliding core 4 moves along the axis of the shell 11 under the elastic force of the elastic member 5. The container body 100 moves in the direction, thereby protruding a distance, so that the hollow inner cavity 42 of the sliding core 4 is connected to the liquid inlet 121 on the side wall of the accommodating portion 12. At this time, the container body 100 is squeezed, and the contents are squeezed out from the liquid inlet 121 through the hollow inner cavity 42 of the sliding core 4. The user can take an appropriate amount of the contents (for example: facial cleanser). When the contents are taken out, the squeezing of the container body 100 is released, the container body returns to its original shape, and the contents are sucked back into the container body 100 accordingly to avoid waste of the contents. When using the packaging container to take out the contents of the container body 100, on the one hand, since the sliding core 4 protrudes a certain distance, the contents squeezed out of the container body will not easily drip onto the edge of the lid during use, thereby ensuring the cleanliness of the lid; on the other hand, since the container body 100 can return air, the contents can be sucked back into the container body 100, thereby avoiding the situation where the contents remain at the lid mouth, ensuring the cleanliness, hygiene and beauty of the lid mouth, improving the overall use effect of the packaging container, and providing a better user experience.

[0061] Reference Figure 13 As shown, in the above embodiment, preferably, the outer wall of the mouth of the container body 100 has a limiting groove 101, referring to Figure 6 As shown, a limiting protrusion 113 is provided on the inner wall of the shell 11. When the shell 11 is connected to the container body 100, the limiting protrusion 113 engages with the limiting groove 101 to limit the relative position of the shell 11 and the container body 100.

[0062] Specifically, the threaded connection between the shell 11 and the container body 100 is used for explanation. When the shell 11 is threadedly connected to the container body 100, as the shell 11 is gradually tightened clockwise, the limiting protrusion 113 gradually approaches the limiting groove 101. When the shell 11 and the container body 100 are tightened into place, the limiting protrusion 113 will snap into the limiting groove 101, accompanied by a "click" sound to prompt the user that the screw is tightened into place, thereby providing the user with a better user experience. At the same time, the mutual engagement of the limiting protrusion 113 and the limiting groove 101 can fix the relative position of the lid 200 and the container body 100, so that even if the lid 200 is subjected to a certain torque, it will not rotate relative to the container body 100, thereby improving the stability of the lid 200 during use.

[0063] In the description of this specification, reference to the terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and integrate different embodiments or examples described in this specification, as well as features of different embodiments or examples, unless otherwise inconsistent.

[0064] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0065] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A cover, characterized in that: include: A lower cover, the lower cover comprising a shell and a receiving portion, the receiving portion being arranged on the shell along the axial direction of the shell, the top of the receiving portion being open and at least one liquid inlet being formed on a side wall of the receiving portion, and an elastic member being accommodated in the receiving portion; an upper cover, the upper cover being buckled on the lower cover and rotatably connected to the housing, and the upper cover being provided with a first locking portion; a pressing portion, the pressing portion being disposed on the housing and having a second engaging portion thereon, the second engaging portion being capable of engaging with the first engaging portion to engage the upper cover with the lower cover; the pressing portion being capable of moving in a radial direction of the housing to separate the second engaging portion from the first engaging portion and to enable the upper cover and the lower cover to rotate relative to each other; A hollow sliding core, an abutment portion is formed on the outer wall of the sliding core, and the sliding core is inserted into the elastic member so that the abutment portion abuts against the elastic member; when the upper cover and the lower cover are buckled, the upper cover is pressed on the top of the sliding core so that the sliding core can compress the elastic member along the axial direction of the shell; when the upper cover and the lower cover can rotate relative to each other, the sliding core can move along the axial direction of the shell under the elastic force of the elastic member, so that the hollow inner cavity of the sliding core is communicated with the liquid inlet of the accommodating portion.

2. The cover according to claim 1, wherein The shell includes an outer shell and an inner shell, the axis of the outer shell coincides with the axis of the inner shell; the outer shell is rotatably connected to the upper cover, the accommodating portion is arranged on the inner shell along the axial direction of the inner shell, and the inner shell is used to connect with the container body.

3. The cover according to claim 2, characterized in that A limiting portion is formed on the inner wall of the top of the accommodating portion. When the upper cover and the lower cover are able to rotate relative to each other, the sliding core can move a set distance along the axial direction of the inner shell under the elastic force of the elastic member, so that the abutting portion abuts against the limiting portion.

4. The cover according to claim 2, wherein: A sealing portion is provided at the bottom of the accommodating portion. When the upper cover and the lower cover are buckled together, the bottom opening of the sliding core is sleeved on the sealing portion and has an interference fit with the sealing portion.

5. The cover according to claim 2, wherein: The diameter of the accommodating portion gradually increases from the end far from the upper cover to the end near the upper cover, so that the outer wall of the accommodating portion can be interference-fitted with the inner wall of the container body.

6. The cover according to claim 2, wherein: The pressing portion includes a pressing block and two elastic arms, the second engaging portion is provided on the top of the pressing block, and the two elastic arms are respectively provided on both sides of the pressing block; each elastic arm has a protrusion at one end away from the pressing block, and a slot is formed on the inner wall of the outer shell, and the protrusion can be engaged with the slot to connect the pressing portion to the outer shell; The bending direction of the elastic arm is toward the center of the outer shell, so that the elastic arm can drive the pressing block to move elastically along the radial direction of the outer shell.

7. The cover according to claim 1, wherein An annular groove is further provided on the outer wall of the sliding core, a sealing ring is provided in the annular groove, and the sealing ring is located between the sliding core and the inner wall of the accommodating portion; Alternatively, an annular sealing portion is formed on the inner wall of the accommodating portion, the sliding core is inserted into the accommodating portion, and the outer wall of the sliding core is interference-fitted with the annular sealing portion.

8. The cover according to claim 1, wherein: An elastic pressure head is provided on the upper cover at a position corresponding to the sliding core. When the upper cover and the lower cover are buckled together, the elastic pressure head presses on the top of the sliding core so that the sliding core can compress the elastic member along the axial direction of the shell.

9. A packaging container, characterized in that: It comprises a container body and a lid according to any one of claims 1 to 8, the shell being connected to the container body, and the accommodating portion correspondingly passing through the mouth of the container body and sealing the mouth of the container body; when the upper cover and the lower cover are buckled together, the contents in the container body are sealed inside the container body, and when the upper cover and the lower cover are able to rotate relative to each other, the contents in the container body can be squeezed out from the liquid inlet through the hollow cavity of the sliding core.

10. The packaging container according to claim 9, characterized in that A limiting groove is provided on the outer wall of the mouth of the container body, and a limiting protrusion is provided on the inner wall of the shell. When the shell is connected to the container body, the limiting protrusion engages with the limiting groove to limit the relative position of the shell and the container body.

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