Container cover body with composite structure and container combination thereof

Abstract

The invention discloses a container cover body with a composite structure and a container combination thereof, and the container cover body comprises a top cover which is provided with a cover body top plate and a top cover side wall; the middle bolt is provided with a cylindrical middle bolt outer wall, a crimping ring connected to the upper end of the middle bolt outer wall and a middle bolt bottom plate arranged at the lower end of the inner side of the middle bolt outer wall; the middle bolt and the top cover are made of metal plates, and a heat insulation space located in the top cover and the middle bolt is defined by the middle bolt and the top cover together. An annular groove is formed in the outer wall of the middle bolt, an annular component is arranged in the annular groove, and an outer thread part is arranged on one annular outer side wall of the annular component.

Description

Technical Field

[0001] The invention relates to a composite structure container cover and a container combination thereof, in particular to a composite structure container cover and a container combination thereof used for a container containing drinking water or beverages. Background Art

[0002] In recent years, as modern people pursue environmental protection and reduce the use of disposable plastic containers, it has become a trend in modern society to carry thermal or cold bottles or portable cups to hold drinking water or beverages.

[0003] In order to achieve the purpose of heat preservation or cold preservation and light weight, the existing thermos bottles or thermos cups are made of double-layer metal, so that the container of the thermos bottle or thermos cup has a heat-insulating interlayer to reduce the heat conduction rate of the thermos bottle or thermos cup. In addition, during the manufacture of the existing thermos cup or thermos bottle, the heat-insulating interlayer of the main body can be further vacuumed by means of vacuuming to further improve the heat insulation capacity.

[0004] However, the lids used in existing thermos cups or flasks do not use a double-layer metal insulation structure, and therefore do not have insulation capabilities. In addition, in order to improve the insulation capabilities, some container lids fill the middle bolt of the lid with polystyrene or other insulation materials, but this will increase the size of the container lid and make it heavy. In addition, most existing container lids are made of plastic materials, so there is a concern that drinking water or beverages that come into contact with the plastic material of the lid will release toxic chemicals, causing anxiety in the user's mind.

[0005] In addition, in order to overcome the above problems, some container covers are provided with a metal surface layer at the portion of the container cover that contacts drinking water or beverages. However, when the metal surface layer contacts the opening or threaded portion of the metal container, metal friction sounds are easily produced, causing troubles during use.

[0006] Due to the above factors, the existing beverage container cover still has room for improvement. Therefore, how to overcome the above problems through structural improvement has become an important issue in this business. Summary of the invention

[0007] The technical problem to be solved by the present invention is to improve the defects of the existing container cover and provide a composite structure container cover and a container combination thereof.

[0008] In order to solve the above-mentioned technical problems, an embodiment of the present invention provides a composite structure container cover body, which is used to be arranged on the opening of a container, and the inner side of the opening has an internal threaded portion, and the composite structure container cover body can define an upper end and a lower end, and the composite structure container cover body comprises: a top cover, the top cover has a cover body top plate, and a top cover side wall extending downward from the outer peripheral edge of the cover body top plate, the diameters of the cover body top plate and the top cover side wall are larger than the diameter of the opening of the container; a middle plug, the upper end of the middle plug is connected to the lower end of the top cover, and the The middle plug has a cylindrical middle plug outer wall, a crimping ring extending outward from the upper end of the middle plug outer wall, and a middle plug bottom plate connected to the bottom of the middle plug outer wall; wherein the diameter of the middle plug outer wall is smaller than the diameter of the opening, and can be inserted into the inner side of the opening of the container, and the middle plug outer wall is provided with an annular groove surrounding the middle plug outer wall 360 degrees and concave from the outer side surface of the middle plug outer wall toward the center direction of the middle plug; a sealing gasket, the sealing gasket is sleeved on the lower end of the crimping ring, so that when the crimping ring contacts the upper end of the opening The outer wall of the middle plug is formed by a metal plate, and the outer side of the crimping ring is connected to the inner periphery of the bottom end of the side wall of the top cover, so that the middle plug and the top cover jointly define a heat-insulating space located inside the top cover and the middle plug; wherein the diameter of the outer wall of the middle plug is matched with the outer thread portion of the outer wall of the middle plug. The outer thread portion is matched with the position of the inner thread portion, and the diameter of the inner side of the opening of the container is matched. When the middle bolt is inserted into the inner side of the opening, the outer wall of the middle bolt does not contact the inner side of the opening, and the outer thread portion can be locked with the inner thread portion. When the composite structure container cover is locked to the opening of the container, the crimping ring is located above the upper end edge of the opening, and the sealing gasket contacts the upper end edge of the opening, so that the composite structure container cover and the opening are sealed.

[0009] A preferred embodiment of the present invention is characterized in that the annular member has an annular inner side wall relative to the annular outer side wall, and two annular end faces located at the upper and lower ends of the annular member; the annular groove has a groove bottom with a diameter smaller than the outer wall of the middle plug, and two groove side walls connected to the upper and lower ends of the groove bottom; when the annular member is disposed in the annular groove, the inner side wall of the annular member contacts the groove bottom, and the two annular end faces contact the two groove side walls.

[0010] A preferred embodiment of the present invention, wherein the middle bolt further has a middle bolt recess formed at the bottom of the middle bolt and recessed upward, wherein the middle bolt recess is defined by a middle bolt inner wall spaced apart from the middle bolt outer wall, and a middle bolt top plate connected to the top of the middle bolt inner wall; wherein the middle bolt bottom plate is annular, and the lower periphery of the middle bolt inner wall is connected to the inner periphery of the middle bolt bottom plate, and fits tightly with the inner periphery of the middle bolt bottom plate.

[0011] In a preferred embodiment of the present invention, the annular component is disposed in the annular groove by means of injection molding.

[0012] A preferred embodiment of the present invention is that the bottom of the annular groove is provided with a plurality of first snap-fitting structures protruding or recessed on the surface of the bottom of the groove, and the annular inner wall of the annular member has a plurality of second snap-fitting structures corresponding to the plurality of the first snap-fitting structures, and the plurality of the second snap-fitting structures are complementary in shape to the plurality of the first snap-fitting structures and snap-fit ​​with the plurality of the first snap-fitting structures.

[0013] A preferred embodiment of the present invention is characterized in that the height of the middle bolt top plate is configured to be higher than the height of the crimping ring, and the height difference between the middle bolt top plate and the crimping ring is configured to be between 5 mm and 50 mm, so that when the composite structure container cover is locked on the opening of the container, the upper end portion of the middle bolt recess can be located above the opening.

[0014] A preferred embodiment of the present invention is that the diameter of the middle bolt recess is configured to be no less than 30 mm, the height of the middle bolt recess is configured to be no less than 50 mm, and the volume of the middle bolt recess is configured to be no less than 30 cubic centimeters.

[0015] The embodiment of the present invention also provides a container combination, which includes: a container, the upper end of the container has an opening, the inner side of the opening has an internal threaded portion; and a composite structure container cover, the composite structure container cover includes: a top cover, the top cover has a cover top plate, and a top cover side wall extending downward from the outer peripheral edge of the cover top plate, the diameter of the cover top plate and the top cover side wall is greater than the diameter of the opening of the container; a middle plug, the upper end of the middle plug is connected to the lower end of the top cover, the middle plug has a cylindrical middle plug outer wall, a crimping ring extending outward from the upper end of the middle plug outer wall, and a middle plug bottom plate connected to the bottom of the middle plug outer wall; wherein , the diameter of the outer wall of the middle plug is smaller than the diameter of the opening, and can be inserted into the inner side of the opening of the container, the outer wall of the middle plug is provided with an annular groove which surrounds the outer wall of the middle plug 360 degrees and is recessed from the outer side of the outer wall of the middle plug toward the center direction of the middle plug; a sealing gasket, the sealing gasket is sleeved on the lower end of the crimping ring, so that the crimping ring forms a seal when it contacts the upper end of the opening; and an annular member, the annular member is made of plastic and is embedded in the annular groove, the annular member has an annular outer side wall which is substantially flush with the outer wall of the middle plug, and an external threaded portion formed on the annular outer side wall and capable of matching with the internal threaded portion;

[0016] Wherein, the top cover and the middle plug are formed by a metal plate, and the outer side of the crimping ring is connected to the inner peripheral edge of the bottom end of the top cover side wall, so that the middle plug and the top cover jointly define an insulating space located inside the top cover and the middle plug; wherein, the diameter of the outer wall of the middle plug matches the diameter of the inner side of the opening of the container, and the position of the external threaded portion matches the position of the internal threaded portion, when the middle plug is inserted into the inner side of the opening, the outer wall of the middle plug does not contact the inner side of the opening, and the external threaded portion can be locked with the internal threaded portion, and when the composite structure container cover is locked to the opening of the container, the crimping ring is located above the upper end edge of the opening, and the sealing gasket contacts the upper end edge of the opening, so that a seal is formed between the composite structure container cover and the opening.

[0017] A preferred embodiment of the present invention is characterized in that the inner side wall of the opening portion of the container of the container combination has an inner ring convex portion located below the internal threaded portion, the surface of the inner ring convex portion and the middle bolt located below the annular member have a minimum gap position, and the gap between the surface of the inner ring convex portion and the corresponding middle bolt at the minimum gap position is smaller than the gap between the inner side wall of the opening portion and the middle bolt outside the range of the minimum gap position.

[0018] A preferred embodiment of the present invention is characterized in that the inner ring protrusion of the container combination has an inner conical surface whose diameter gradually decreases from top to bottom, and when the composite structure container cover is locked inside the opening, a point at the lower end of the middle plug is adjacent to the conical surface, and the position where the conical surface and the lower end of the middle plug are closest to each other is defined as the minimum gap position.

[0019] One of the beneficial effects of the present invention is that it can provide a composite structure container cover body and a container combination thereof which is made of a metal plate and has an insulating space, and which has the characteristics of light weight, good strength, and good thermal insulation effect. In addition, the annular component and the external thread of the composite structure container cover body are made of plastic material, which can overcome the problem of metal friction noise generated by the metal structure cover body being locked on the container.

[0020] To further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings provided are only for reference and description and are not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic cross-sectional view of a first embodiment of a composite structure container cover and a container assembly thereof according to the present invention.

[0022] Figure 2 For Figure 1 Schematic diagram of a partial enlarged cross-section taken in part II.

[0023] Figure 3 This is a schematic diagram of the composite structure container cover of the present invention being used as a water cup.

[0024] Figure 4 It is a schematic diagram of the use state of the composite structure container cover body and the container combination of the present invention when used with a straw whose length is greater than the height of the container.

[0025] Figure 5 It is a schematic exploded view of the metal plate parts used for welding to form the metal body of the composite structure container cover according to the first embodiment of the present invention.

[0026] Figure 6 for Figure 5 The metal sheet parts shown are welded to form a cross-sectional schematic diagram of the metal body of the composite structure container cover.

[0027] Figure 7 It is a schematic diagram of the operation state of forming the annular component into the annular groove of the composite structure container cover by a forming mold according to the present invention.

[0028] Figure 8 It is a three-dimensional schematic diagram of a composite structure container cover according to a second embodiment of the present invention.

[0029] Fig. 9 It is a three-dimensional schematic diagram of the composite structure container cover according to the second embodiment of the present invention, in a state where the annular member and the external threaded portion have not yet been arranged in the annular groove of the middle plug.

[0030] Fig.10 It is a schematic cross-sectional view of a composite structure container cover according to a second embodiment of the present invention. DETAILED DESCRIPTION

[0031] The following is an explanation of the implementation methods of the "composite structure container cover and its container combination" disclosed in the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed in various ways based on different viewpoints and applications without departing from the concept of the present invention. In addition, the drawings of the present invention are only simple schematic illustrations and are not depicted according to actual dimensions. It is stated in advance. The following embodiments will further explain the relevant technical contents of the present invention in detail, but the disclosed contents are not intended to limit the scope of protection of the present invention. In addition, the term "or" used in this article may include any one or more combinations of the associated listed items depending on the actual situation.

[0032] [First embodiment]

[0033] See also Figures 1 to 7 As shown, an embodiment of the present invention provides a composite structure container cover 2 and a container combination having the composite structure container cover 2. The composite structure container cover 2 can be set on a container combination 1 to seal the opening of the container combination 1.

[0034] The container assembly 1 has a container 100, which is a cylindrical container and has an opening 110 at the upper end of the container 100. The upper end of the opening 110 forms a circular flange, and the inner side of the opening 110 has an internal thread 111. In this embodiment, the container 100 can be a double-layer container made of a metal sheet, and has the function of heat preservation or cold preservation. However, the container 100 of the present invention is not limited to this, and the container 100 can also be a container made of other materials. For example, the container 100 can also be an insulated container made of plastic, ceramic, or glass.

[0035] For ease of explanation, the composite structure container cover 2 can define a relative upper end and a lower end, and the composite structure container cover 2 includes a top cover 200 located at the upper end, a middle plug 300 connected to the lower end of the top cover 200, and a sealing gasket 500 arranged on the middle plug 300.

[0036] The top cover 200 has a top plate 210 and a top cover side wall 220 extending downward from the outer periphery of the top plate 210. The top plate 210 is substantially circular, and the diameters of the top plate 210 and the top cover side wall 220 are greater than the diameter of the opening 110 of the container assembly 1. The middle plug 300 is connected to the lower end of the top cover 200. The middle plug 300 is substantially smaller in diameter than the opening 110, and can be inserted into the opening 110.

[0037] like Figure 2 and Figure 3 As shown, in this embodiment, the middle bolt has a middle bolt outer wall 310 in a cylindrical shape, a crimping ring 320 extending outward from the upper end of the middle bolt outer wall 310, and a middle bolt inner wall 330 spaced apart and arranged inside the middle bolt outer wall 310. And a middle bolt bottom plate 350 connected between the middle bolt outer wall 310 and the lower end of the middle bolt inner wall 330, and a middle bolt top plate 340 formed at the upper end of the middle bolt inner wall 330. The middle bolt bottom plate 350 is connected between the middle bolt outer wall 310 and the lower end of the middle bolt inner wall 330, so that the lower end of the middle bolt outer wall 310, the middle bolt bottom plate 350, and the lower end of the middle bolt inner wall 330 are closed.

[0038] like Figure 1 and Figure 2 As shown, the cover top plate 210, the cover side wall 220 of the top cover 200 of the present invention, and the middle bolt outer wall 310, the crimping ring 320, the middle bolt inner wall 330, the middle bolt bottom plate 350, and the middle bolt top plate 340 of the middle bolt 300 are all formed of metal plates, and the cover top plate 210 and the crimping ring 320, the middle bolt top plate 340 are spaced apart to form a gap, and the middle bolt outer wall 310 and the middle bolt inner wall 330 are spaced apart from each other to form a gap. The inner walls 330 are also spaced apart to form another gap, and the gaps between the cover top plate 210 and the crimping ring 320 and the middle plug top plate 340, as well as the gaps between the middle plug outer wall 310 and the middle plug inner wall 330 are interconnected, thereby forming a heat-insulating space 400 between the top cover 200 and the middle plug 300, thereby reducing the effects of heat conduction and heat convection, and allowing the composite structure container cover 2 to have heat-insulating effects.

[0039] It is worth noting that in order to make the composite structure container cover 2 have sufficient heat insulation effect, the distance between the cover top plate 210 and the middle plug top plate 340 is preferably configured to be greater than 3 mm, and the distance between the middle plug outer wall 310 and the middle plug inner wall 330 is also configured to be greater than 3 mm, so that there is sufficient distance between the cover top plate 210 and the middle plug top plate 340 and between the middle plug outer wall 310 and the middle plug inner wall 330, so as to reduce the heat convection conduction or radiation conduction between the cover top plate 210 and the middle plug top plate 340, and between the middle plug outer wall 310 and the middle plug inner wall 330.

[0040] refer to Figure 5 and Figure 6 As shown, the middle plug top plate 340 is integrally connected to the upper end of the middle plug inner wall 330, so that the middle plug inner wall 330 and the middle plug top plate 340 form a blind hole that is recessed upward from the lower end of the middle plug 300, thereby forming a middle plug recess 360 that is recessed from the lower end of the middle plug 300 toward the top cover 200. The middle plug recess 360 can be used to accommodate a straw 120 placed inside the container 100, or used as a storage space for holding drinking water or beverages.

[0041] like Figure 3 , which is a schematic diagram of the container combination of the present invention in use with a straw 120. In this embodiment, the middle bolt 300 of the composite structure container cover 2 is configured such that the height of the crimping ring 320 is lower than the height of the middle bolt top plate 340, and the upper end height of the middle bolt recess 360 is higher than the height of the crimping ring 320. Therefore, when the composite structure container cover 2 is set on the opening 110 of the container 100, the lower end of the middle bolt recess 360 extends below the opening 110 of the container combination 1, and the upper end portion of the middle bolt recess 360 can protrude from the upper end of the opening 110. The portion of the middle plug recess 360 that protrudes from the upper end of the opening 110 can form a straw accommodating space for accommodating a straw. Therefore, when the container assembly 1 is used with a straw 120 whose length is greater than the height of the container 100, the portion of the upper end of the straw 120 that protrudes outside the opening 110 can be accommodated in the straw accommodating space at the upper end of the middle plug recess 360. When the straw 120 is placed in the container 100, the composite structure container cover 2 will not interfere with the straw 120 when covering the opening 110, and there is no need to remove the straw 120 from the container 100 to prevent the straw 120 from being contaminated.

[0042] like Figure 4As shown, the middle plug recess 360 can be used to hold beverages or drinking water, so that the composite structure container cover 2 of the present invention also has the function of a drinking cup. Furthermore, in order to make the middle plug recess 360 have a sufficient volume, the diameter of the middle plug recess 360 is configured to be not less than 60% of the inner diameter of the opening 110 of the container 100, and the height of the middle plug recess 360 is configured to be greater than the diameter of the middle plug recess 360. In more detail, the diameter of the middle plug recess 360 is not less than 30 mm, the height of the middle plug recess 360 is not less than 50 mm, and the volume of the middle plug recess 360 is not less than 30 cubic centimeters (cm3).

[0043] More specifically, in this embodiment, the height difference between the middle bolt top plate 340 and the crimping ring 320 is configured to be between 5 mm and 50 mm. Through the above configuration, the difference between the length of the straw 120 and the height of the container 100 can be between 5 mm and 50 mm. In other words, after the straw 120 is inserted into the container 100, the length of the upper end of the straw 120 extending from the upper end of the opening 110 can also be between 5 mm and 50 mm.

[0044] It is particularly noted that in this embodiment, although the middle bolt 300 is provided with the middle bolt recess 360, the present invention is not limited thereto. For example, in an embodiment not shown in other figures of the present invention, the middle bolt bottom plate 350 of the middle bolt 300 is a circular plate body that completely covers the bottom of the middle bolt 300, and no upwardly recessed blind hole is formed in the center of the middle bolt bottom plate 350, so there is no middle bolt inner wall 330, the middle bolt top plate 340, and no middle bolt recess 360 is formed.

[0045] like Figure 1 and Figure 2 As shown, in this embodiment, the middle bolt outer wall 310 is provided with an annular groove 370 which surrounds the middle bolt outer wall 310 by 360 degrees and is recessed from the outer side of the middle bolt outer wall 310 toward the center direction of the middle bolt 300, and an annular member 380 is provided in the annular groove 370. The annular member 380 is made of plastic and is embedded in the annular groove 370. The annular member 380 has an annular outer side wall 381 located at the outside and an outer threaded portion 382 formed on the annular outer side wall 381 and capable of matching with the inner threaded portion 111. The annular member 380 forms an annular inner side wall 383 on one side relative to the annular outer side wall 381, and two annular end faces 384 are formed at the upper end and the lower end of the annular member 380, respectively.

[0046] When the annular member 380 is disposed in the annular groove 370 , the annular outer side wall 381 is flush with the middle bolt outer wall 310 , and the annular inner side wall contacts the groove bottom 371 , and the two annular end faces 384 contact the two groove side walls 372 .

[0047] It is worth noting that the annular component 380 can be arranged in the annular groove 370 by using an insert molding process, so that the annular component 380 and the annular groove 370 can be tightly combined, and the annular component 380 can be firmly arranged in the annular groove 370.

[0048] In addition, in order to further enhance the stability of the combination of the annular member 380 and the annular groove 370, a plurality of first engaging structures 373 protruding or recessed on the surface of the groove bottom 371 are provided on the groove bottom 371 of the annular groove 370, and a plurality of second engaging structures 385 having shapes complementary to the plurality of first engaging structures 373 are provided on the annular inner sidewall 383 of the annular member 380. The plurality of second engaging structures 385 can be engaged in the plurality of first engaging structures 373, and the combination strength of the annular member 380 and the annular groove 370 can be enhanced, so that when the composite structure container cover 2 is locked in the opening 110 of the container 100, the annular member 380 will not rotate relative to the middle bolt 300 due to the friction between the external threaded portion 382 and the internal threaded portion 111.

[0049] like Figure 1 and Figure 2 As shown, the position of the external threaded portion 382 matches the position of the internal threaded portion 111, and the pitch diameter and pitch of the external threaded portion 382 match the pitch diameter and pitch of the internal threaded portion 111, so that when the middle bolt 300 is inserted into the inner side of the opening portion 110 and the composite structure container cover 2 is rotated, the external threaded portion 382 can be locked to the internal threaded portion 111, and the composite structure container cover 2 is locked to the opening portion 110 of the container 100.

[0050] When the composite structure container cover 2 is locked to the opening 110, the crimping ring 320 is located above the upper edge of the opening 110, and the sealing gasket 500 contacts the upper edge of the opening 110 and fits tightly with the opening 110, thereby forming a seal between the composite structure container cover 2 and the opening 110, and preventing the fluid stored in the container 100 from leaking out.

[0051] The above-mentioned design of the present invention ensures that when the composite structure container cover 2 is locked in the opening 110 of the container 100, only the external threaded portion 382 made of plastic will be in contact with the internal threaded portion 111, and the middle plug outer wall 310 of the middle plug 300 will not be in contact with the inner wall of the opening 110, thereby avoiding the friction sound generated when the external threaded portion 382 and the internal threaded portion 111 are locked.

[0052] In addition, except for the annular member 380 and the external threaded portion 382 which are made of plastic, the rest of the composite structure container cover 2 of the present invention is formed by metal plates, so that most of the surfaces of the middle plug 300 that will contact the drinking water or beverage inside the container 100 are metal surfaces, thereby reducing the chance of drinking water or beverage contacting plastic and avoiding safety concerns about the release of toxic chemicals when plastic contacts high-temperature beverages or drinking water.

[0053] In addition, in this embodiment, the container 100 has an inner ring protrusion 130 located below the internal threaded portion 111 below the opening portion 110, and there is a minimum gap position 132 between the inner ring protrusion 130 and the lower end of the middle plug 300. The gap between the surface of the inner ring protrusion 130 at the minimum gap position 132 and the corresponding outer surface of the middle plug 300 is smaller than the gap between the inner side wall of the opening portion 110 and the middle plug 300 outside the range of the minimum gap position 132.

[0054] In more detail, Figure 2 As shown, in this embodiment, the inner ring convex portion 130 is formed below the opening portion 110, and the diameter of the inner side wall of the inner ring convex portion 130 is configured to be smaller than the diameter of the inner side wall of the opening portion 110. In addition, in this embodiment, the connection position between the upper end of the inner ring convex portion 130 and the lower end of the opening portion 110 has an inner conical surface 131 whose diameter gradually decreases from top to bottom. When the composite structure container cover 2 is locked inside the opening portion 110, a point at the lower end of the middle plug 300 is adjacent to the inner conical surface 131, and the position where the inner conical surface 131 and the lower end of the middle plug 300 are closest is defined as the minimum gap position 132.

[0055] In a preferred embodiment of the present invention, when the composite structure container cover 2 is locked in the opening portion 110, at the minimum gap position 132, the gap between the surface of the inner ring protrusion 130 and the lower end of the middle plug 300 can be less than 0.1 mm, and even when the composite structure container cover 2 is locked, the lower end of the middle plug 300 can contact the inner conical surface 131, so that the gap between the lower end of the middle plug 300 and the inner ring protrusion 130 is eliminated.

[0056] Through the above design, the gap between the lower end of the middle plug 300 and the opening 110 of the container 100 is reduced, so as to limit or reduce the flow of the drinking water or beverage stored in the container 100 passing through the gap at the minimum gap position 132, thereby reducing the chance of the surface of the annular member 380 and the internal threaded portion 111 contacting the drinking water or beverage, thereby avoiding the user's concerns about the beverage or drinking water contacting the plastic.

[0057] The following further describes the detailed structure of the composite container cover 2 and its manufacturing method. Figure 5 As shown, the composite structure container cover body 2 of the present invention is roughly made of a first plate member P1 to form the top cover 200, and a second plate member P2 and a third plate member P3 to form the center plug 300, and the first plate member P1, the second plate member P2 and the third plate member P3 can use titanium metal plates or stainless steel plates with a thickness between 0.3mm and 1.5mm, and are manufactured by stamping, rolling and other means, and the first plate member P1, the second plate member P2 and the third plate member P3 are connected as a whole by welding to form the composite structure container cover body 2.

[0058] In more detail, Figure 5 As shown, in this embodiment, the cover body top plate 210 and the top cover side wall 220 of the top cover 200 are formed integrally from the first plate member P1; the crimping ring 320 and the middle bolt outer wall 310 of the middle bolt 300 are formed integrally from the second plate member P2; the middle bolt inner wall 330 and the middle bolt top plate 340 are formed integrally from the third plate member. Moreover, the middle bolt bottom plate 350 is also formed by the second plate member P2, so that the middle bolt bottom plate 350 is integrally connected to the lower end of the middle bolt outer wall 310.

[0059] And if Figure 6 As shown, the first plate P1, the second plate P2 and the third plate P3 are welded to form the metal body of the composite structure container cover 2. In this embodiment, the welding method of the first plate P1, the second plate P2 and the third plate P3 is to weld the outer periphery of the crimping ring 320 to the lower end of the inner side of the top cover side wall 220 by welding means, so that the outer periphery of the crimping ring 320 and the lower end of the top cover side wall 220 are connected to form a first welding portion W1. And the middle bolt bottom plate 350 is connected to the lower end of the middle bolt inner wall 330 by welding means relative to one end of the middle bolt outer wall 310, so that the middle bolt bottom plate 350 and the lower end of the middle bolt inner wall 330 are connected to form a second welding portion W2.

[0060] It is worth noting that, although the present embodiment discloses that the middle bolt bottom plate 350 is formed by the second plate member P2 and is integrally formed at the lower end of the middle bolt outer wall 310, and the second welding portion W2 is formed at the junction of the middle bolt bottom plate 350 and the lower end of the middle bolt inner wall 330, the present invention is not limited thereto. For example, in an embodiment not shown in the drawings of the present invention, the middle bolt bottom plate 350 can also be formed by the third plate member P3, the middle bolt bottom plate 350 is integrally formed and connected to the lower end of the middle bolt inner wall 330, and the second welding portion W2 is formed at the junction of the middle bolt bottom plate 350 and the lower end of the middle bolt outer wall 310.

[0061] Then as Figure 7 As shown, after the metal body of the composite structure container cover 2 is manufactured, the annular member 380 can be formed in the annular groove 370 of the middle plug 300 by means of in-mold insert injection molding. In this embodiment, the metal body of the composite structure container cover 2 is set in a molding die 600 to mold the annular member 380 in the annular groove 370. For example, the molding die 600 includes a first module 610 and a second module 620 set on a bottom plate 630, and a positioning column 660.

[0062] The first module 610 can be a fixed module, and the second module 620 can be a movable module that can be displaced in a direction away from the first module 610. The first module 610 and the second module 620 jointly define an insert accommodating portion 640 into which the metal body of the composite structure container cover 2 can be inserted. The positioning column 660 is a cylinder whose diameter matches the middle bolt recess 360 of the middle bolt 300, and can be passed through the bottom plate 630 along the direction of the central axis of the insert accommodating portion 640.

[0063] The insert receiving portion 640 is generally a stepped recessed hole whose shape is complementary to the top cover 200 and the middle plug 300 of the composite structure container cover 2, so that the metal body of the composite structure container cover 2 can be inserted into the insert receiving portion 640. The insert receiving portion 640 is defined by a first side wall 641 and a second side wall 642 respectively disposed on the adjacent sides of the first module 610 and the second module 620. In addition, a first thread forming portion 6411 and a second thread forming portion 6421 are respectively formed at positions of the first side wall 641 and the second side wall 642 corresponding to the annular groove 370 of the middle plug 300, and the shapes of the first thread forming portion 6411 and the second thread forming portion 6421 are complementary to the shapes of the annular outer side wall 381 and the external thread portion 382 of the annular component 380. Therefore, when the first module 610 and the second module 620 are closed and the metal body of the composite structure container cover 2 is inserted into the insert accommodating portion 640, the first thread forming portion 6411 and the second thread forming portion 6421 can be together with the annular groove 370 on the outer wall 310 of the middle plug to define a mold cavity whose shape is complementary to the annular component 380.

[0064] In this embodiment, the first module 610 is provided with a runner 650 and a gate 651 connected to the mold cavity used to form the annular member 380, so that plastic can be injected into the mold cavity used to form the annular member 380, so that the annular member 380 is overmolded in the annular groove 370. After the annular member 380 is molded, the second module 620 and the positioning column 660 of the molding mold 600 can be moved, so that the composite structure container cover 2 can be taken out of the molding mold 600.

[0065] [Second embodiment]

[0066] like Figures 8 to 10 FIG. 2 is a second embodiment of the composite structure container cover 2 of the present invention. It should be noted that the technical features of this embodiment are similar to those of the first embodiment, so the similar technical contents of the two embodiments will not be repeatedly introduced.

[0067] like Figure 8 and Fig. 9As shown, in this embodiment, the composite structure container cover 2 includes a top cover 200 and a middle plug 300. The top cover 200 includes a cover top plate 210, and a top cover side wall 220 extending downward from the outer periphery of the cover top plate 210. The middle plug 300 is connected to the bottom of the top cover 200, and the middle plug 300 includes a middle plug outer wall 310, a middle plug bottom plate 350, a middle plug inner wall 330 and a middle plug top plate. The middle plug outer wall 310 is provided with an annular groove 370 surrounding the middle plug 300 at 360 degrees, and the middle plug inner wall 330 and the middle plug top plate 340 jointly define a middle plug recess 360 that is recessed upward from the center of the middle plug bottom plate 350. An annular member 380 is disposed in the annular groove 370, and the annular member 380 has an annular outer side wall 381 and an annular inner side wall 383 contacting the groove bottom 371 of the annular groove 370. An outer thread portion 382 is formed on the annular outer side wall 381 to match the inner thread portion 111 of the opening portion 110 of the container 100.

[0068] In this embodiment, the annular groove 370 is provided with a plurality of first engaging structures 373 protruding from the groove bottom 371 on the groove bottom 371, and Fig.10 As shown, when the annular member 380 is formed in the annular groove 370 , the annular inner side wall 383 of the annular member 380 forms a plurality of second engaging structures 385 whose shapes are complementary to the plurality of first engaging structures 373 .

[0069] In more detail, in this embodiment, the plurality of first snap-fit ​​structures 373 are a plurality of rib-like structures protruding from the groove bottom plate 630, and each of the first snap-fit ​​structures 373 is arranged at the groove bottom 371 of the annular groove 370 in a direction substantially parallel to the central axis of the center bolt 300.

[0070] Furthermore, in this embodiment, the upper end of the middle bolt outer wall 310 is bent outward to form a crimping ring 320, and the outer periphery of the crimping ring 320 is welded to the inner side wall of the lower end of the top cover side wall 220 to form a first welding portion W1. The middle bolt bottom plate 350 is integrally formed and connected to the bottom end of the middle bolt inner wall 330, and the outer periphery of the middle bolt bottom plate 350 is bent upward to form a folded edge and welded to the inner side wall of the bottom end of the middle bolt outer wall 310. The outer periphery of the middle bolt bottom plate 350 and the welding position of the middle bolt outer wall 310 form the second welding portion W2.

[0071] [Beneficial Effects of Embodiments]

[0072] One of the beneficial effects of the embodiments of the present invention is that the composite structure container cover and its container combination are made of metal plates to form the top cover and the middle plug of the composite structure container cover, an annular groove is provided on the outer wall of the middle plug, and a plastic annular component is provided in the annular groove, and an external threaded portion is provided on the annular outer wall of the annular component, which can be locked with the internal threaded portion on the inner side of the container opening through the external threaded portion, thereby reducing the abnormal noise generated by the mutual friction of metal materials when the composite structure container cover is locked in the opening of the container.

[0073] Furthermore, in addition to the annular component and the internal threaded portion being made of plastic, the top cover and the middle plug of the composite structure container cover of the present invention are both made of metal plates, and an insulating space is formed inside. Therefore, the composite structure container cover is light in weight and has good thermal insulation effect, and can reduce the area of ​​drinking water or beverages in the container that contacts the plastic material, thereby solving the safety concerns caused by drinking water or beverages contacting the plastic cover.

[0074] Furthermore, in the composite structure container cover and the container combination thereof of the present invention, the middle plug has a middle plug recess formed by the inner wall of the middle plug and the top plate of the middle plug, and the middle plug recess forms a storage space that can be used to hold drinking water or beverages, so that the composite structure container cover also has the function of a water cup. And the middle plug recess is configured so that when the composite structure container cover is locked to the opening of the container, the upper section of the middle plug recess can protrude from the upper end of the opening to form a straw accommodation space, so that when the container is used with a straw whose length is greater than the height of the container, the portion of the upper end of the straw protruding from the container opening can be accommodated in the straw accommodation space, so that when the composite structure container cover and the container combination are covered on the container opening, there is no need to pull out the straw. And when the composite structure container cover and the container combination are opened, the upper end of the straw is directly exposed to the outside of the opening of the container, and there is no need to pull the straw out with fingers.

[0075] The contents disclosed above are only preferred feasible embodiments of the present invention, and are not intended to limit the scope of the present invention. Therefore, all equivalent technical changes made using the contents of the present invention's specification and drawings are included in the scope of the present invention.

Claims

1. A composite structure container cover, used to be arranged at the opening of a container, the inner side of the opening has an internal threaded portion, the composite structure container cover can define an upper end and a lower end, characterized in that: The composite structure container cover comprises: a top cover, the top cover comprising a top plate of a cover body and a top cover side wall extending downward from an outer peripheral edge of the top plate of the cover body, wherein the diameters of the top plate of the cover body and the top cover side wall are larger than the diameter of the opening of the container; a middle plug, the upper end of which is connected to the lower end of the top cover, the middle plug having a cylindrical middle plug outer wall, a crimping ring extending outward from the upper end of the middle plug outer wall, and a middle plug bottom plate connected to the bottom of the middle plug outer wall; wherein the diameter of the middle plug outer wall is smaller than the diameter of the opening, so that it can be inserted into the inner side of the opening of the container, and the middle plug outer wall is provided with an annular groove which surrounds the middle plug outer wall 360 degrees and is recessed from the outer side surface of the middle plug outer wall toward the center direction of the middle plug; a sealing gasket, which is sleeved on the lower end of the crimping ring so that the crimping ring forms a seal when it contacts the upper end of the opening; and an annular member, the annular member is made of plastic and is embedded in the annular groove, the annular member has an annular outer wall that does not protrude from the outer wall of the middle plug, and an external threaded portion formed on the annular outer wall and capable of matching with the internal threaded portion; Wherein, the top cover and the middle bolt are formed by a metal plate body, and the outer side of the crimping ring is connected to the inner periphery of the bottom end of the side wall of the top cover, so that the middle bolt and the top cover jointly define a heat-insulating space located inside the top cover and the middle bolt; Among them, the diameter of the outer wall of the middle plug is matched with the diameter of the inner side of the opening of the container, and the position of the external threaded portion is matched with the position of the internal threaded portion. When the middle plug is inserted into the inner side of the opening, the outer wall of the middle plug does not contact the inner side of the opening, and the external threaded portion can be locked with the internal threaded portion. When the composite structure container cover is locked to the opening of the container, the crimping ring is located above the upper end edge of the opening, and the sealing gasket contacts the upper end edge of the opening, so that a seal is formed between the composite structure container cover and the opening.

2. The composite structure container cover according to claim 1, characterized in that: The annular component has an annular inner wall relative to the annular outer wall, and two annular end faces located at the upper and lower ends of the annular component; the annular groove has a groove bottom with a diameter smaller than the outer wall of the middle plug, and two groove side walls connected to the upper and lower ends of the groove bottom; when the annular component is arranged in the annular groove, the inner wall of the annular component contacts the groove bottom, and the two annular end faces contact the two groove side walls.

3. The composite structure container cover according to claim 2, characterized in that: The middle bolt also has a middle bolt recess formed at the bottom of the middle bolt and recessed upward, and the middle bolt recess is defined by a middle bolt inner wall spaced apart from the middle bolt outer wall, and a middle bolt top plate connected to the top of the middle bolt inner wall; wherein the middle bolt bottom plate is annular, and the lower periphery of the middle bolt inner wall is connected to the inner periphery of the middle bolt bottom plate, and is tightly fitted with the inner periphery of the middle bolt bottom plate.

4. The composite structure container cover according to claim 3, characterized in that: The annular component is arranged in the annular groove by means of injection molding.

5. The composite structure container cover according to claim 4, characterized in that: The bottom of the annular groove is provided with a plurality of first snap-fitting structures which are protruding or recessed on the bottom surface of the groove, and the annular inner side wall of the annular member has a plurality of second snap-fitting structures corresponding to the plurality of the first snap-fitting structures, and the plurality of the second snap-fitting structures are complementary in shape to the plurality of the first snap-fitting structures, and snap-fit ​​with the plurality of the first snap-fitting structures.

6. The composite structure container cover according to claim 5, characterized in that: The height of the middle bolt top plate is configured to be higher than the height of the crimping ring, and the height difference between the middle bolt top plate and the crimping ring is configured to be between 5mm and 50mm, so that when the composite structure container cover is locked in the opening of the container, the upper end part of the middle bolt recess can be located above the opening.

7. The composite structure container cover according to claim 6, characterized in that: The diameter of the middle bolt recess is configured to be no less than 30 mm, the height of the middle bolt recess is configured to be no less than 50 mm, and the volume of the middle bolt recess is configured to be no less than 30 cubic centimeters.

8. A container assembly, characterized in that: include: A container, wherein the upper end of the container has an opening, and the inner side of the opening has an internal thread; and A composite structure container cover, the composite structure container cover comprising: a top cover, the top cover comprising a top plate of a cover body and a top cover side wall extending downward from an outer peripheral edge of the top plate of the cover body, wherein the diameters of the top plate of the cover body and the top cover side wall are larger than the diameter of the opening of the container; a middle plug, the upper end of which is connected to the lower end of the top cover, the middle plug having a cylindrical middle plug outer wall, a crimping ring extending outward from the upper end of the middle plug outer wall, and a middle plug bottom plate connected to the bottom of the middle plug outer wall; wherein the diameter of the middle plug outer wall is smaller than the diameter of the opening, so that it can be inserted into the inner side of the opening of the container, and the middle plug outer wall is provided with an annular groove which surrounds the middle plug outer wall 360 degrees and is recessed from the outer side surface of the middle plug outer wall toward the center direction of the middle plug; a sealing gasket, which is sleeved on the lower end of the crimping ring so that the crimping ring forms a seal when it contacts the upper end of the opening; and an annular member, the annular member is made of plastic and is embedded in the annular groove, the annular member has an annular outer wall substantially flush with the outer wall of the middle plug, and an outer threaded portion formed on the annular outer wall and capable of matching with the inner threaded portion; Wherein, the top cover and the middle bolt are formed by a metal plate body, and the outer side of the crimping ring is connected to the inner periphery of the bottom end of the side wall of the top cover, so that the middle bolt and the top cover jointly define a heat-insulating space located inside the top cover and the middle bolt; Among them, the diameter of the outer wall of the middle plug is matched with the diameter of the inner side of the opening of the container, and the position of the external threaded portion is matched with the position of the internal threaded portion. When the middle plug is inserted into the inner side of the opening, the outer wall of the middle plug does not contact the inner side of the opening, and the external threaded portion can be locked with the internal threaded portion. When the composite structure container cover is locked to the opening of the container, the crimping ring is located above the upper end edge of the opening, and the sealing gasket contacts the upper end edge of the opening, so that a seal is formed between the composite structure container cover and the opening.

9. The container assembly according to claim 8, characterized in that: The inner side wall of the opening of the container has an inner ring convex portion located below the internal threaded portion, and the surface of the inner ring convex portion and the middle bolt located below the annular member have a minimum gap position, and the gap between the surface of the inner ring convex portion and the corresponding middle bolt at the minimum gap position is smaller than the gap between the inner side wall of the opening and the middle bolt outside the range of the minimum gap position.

10. The container assembly according to claim 9, characterized in that: The inner ring protrusion has an inner conical surface whose diameter gradually decreases from top to bottom. When the composite structure container cover is locked inside the opening, a point at the lower end of the middle plug is adjacent to the conical surface, and the position where the conical surface and the lower end of the middle plug are closest is defined as the minimum gap position.

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