Tea cup cover with quick-release tea filter structure

Abstract

This utility model relates to the field of thermos cup technology, and in particular discloses a tea cup lid with a quick-release tea filter structure. The lid includes a lower cover body, comprising an integrally formed lower sleeve and an upper sleeve. A stepped ring is formed at the connection between the lower and upper sleeves, and a lower sealing ring is nested outside the stepped ring. A tea strainer is inserted into the inner cavity of the lower sealing ring. The upper cover body is threadedly connected to the outer side of the upper sleeve. An upper sealing ring is embedded inside the upper cover body, contacting the upper end face of the upper sleeve. The outer wall of the lower sleeve is covered with a pure silver outer sleeve, and the inner wall of the upper sleeve is covered with a pure silver inner sleeve, the upper end of which covers the upper end face of the upper sleeve. The advantages are: the tea strainer is installed in the lower cover body through the lower sealing ring, and during use, it no longer directly contacts the inner wall of the silver cup, reducing wear and scratches, preventing damage to the silver inner liner, maintaining the aesthetics of the thermos cup, extending its service life, and reducing silver loss.

Description

Technical Field

[0001] This utility model relates to the field of thermos cup technology, and in particular to a tea cup lid with a quick-release tea filter structure. Background Technology

[0002] Most silver thermos cup tea combs on the market are directly inserted into the inner cavity of the cup and are made of stainless steel. There are two outwardly inclined spring clips on the outer wall of the tea comb. Since the inner liner of the silver thermos cup is made of thin silver sheet by stamping, the stainless steel spring clips are prone to wear and tear on the silver inner liner if it is repeatedly installed and removed, which can easily cause it to break, affecting its appearance and normal use. Utility Model Content

[0003] This invention provides a teacup lid with a quick-release tea filter structure to solve the above-mentioned problems.

[0004] The technical solution of this utility model is implemented as follows:

[0005] A teacup lid with a quick-release tea filter structure includes a lower lid body, which is threadedly connected to the mouth of a thermos. The lower lid body includes an integrally formed lower sleeve and an upper sleeve. The inner diameter of the lower sleeve is formed with an internal thread that mates with the threaded opening of the thermos. The outer diameter of the upper sleeve is smaller than the inner diameter of the lower sleeve. The outer wall of the upper sleeve is formed with an external thread, which is the same as the thread at the mouth of the thermos. The connection between the lower sleeve and the upper sleeve is formed with... A stepped ring, the inner diameter of which is smaller than the inner diameter of the upper sleeve, a lower sealing ring is nested outside the stepped ring, a tea comb is inserted into the inner cavity of the lower sealing ring with a transition fit, an upper cover is installed on the outside of the upper sleeve by a threaded connection, an upper sealing ring is embedded inside the upper cover and contacts the upper end face of the upper sleeve, the outer wall of the lower sleeve is covered with a pure silver outer sleeve, the inner wall of the upper sleeve is covered with a pure silver inner sleeve, and the upper end of the pure silver inner sleeve covers the upper end face of the upper sleeve.

[0006] Furthermore, the outer wall of the tea comb is a smooth cylindrical shape, and the upper end of the tea comb is formed with an outwardly folded limiting ring. The tea comb is formed by stamping silver sheet.

[0007] Furthermore, the outer circumference of the lower sealing ring is formed with an annular groove that mates with the stepped ring, the upper lip plate of the lower sealing ring contacts the inner wall of the upper sleeve, and the lower lip plate of the lower sealing ring contacts the inner wall of the lower sleeve.

[0008] Furthermore, an annular groove is formed on the outer wall of the lower sleeve, and a lifting rope retainer is detachably connected and installed in the annular groove. The lifting rope retainer is made of plastic, and a lifting rope is installed on the lifting rope retainer.

[0009] Furthermore, the upper cover includes a lower cap that is threadedly connected to the lower cover. The lower cap is an annular double-layered stepped boss with an open lower end. The upper sealing ring is installed inside the step of the lower cap. Several vent holes connected to the outer wall of the upper step of the lower cap are formed on the upper side wall of the lower cap. The upper cap is rotatably installed outside the upper step of the lower cap. The lower end of the upper cap has a vent channel. A sealing body is embedded and fixed on the inner side wall of the upper cap. A notch is formed on the side wall of the sealing body that connects the vent holes and the vent channel. The lip plate of the sealing body is in transitional contact with the outer wall of the upper stepped boss of the lower cap.

[0010] Furthermore, a cylindrical fixing post for mounting the upper screw cap is fixed to the top of the lower screw cap. A limiting strip is formed on the side wall of the fixing post. A circular hole is formed in the top inner part of the upper screw cap to cooperate with the fixing post. A limiting groove is formed on the edge of the circular hole to cooperate with the limiting strip. When the limiting strip abuts against one end of the limiting groove, the notch corresponds to the position of the exhaust hole.

[0011] Furthermore, at least one of the outer walls of the lower cap and the upper cap is formed with anti-slip grooves.

[0012] Furthermore, the outer walls of the lower screw cap and the upper screw cap are covered with the pure silver outer sleeve.

[0013] Furthermore, the upper stepped protrusion of the lower screw cap is inlaid with the pure silver inner sleeve.

[0014] By adopting the above technical solution, the beneficial effects of this utility model are as follows:

[0015] 1. The tea comb is installed in the lower lid body through the lower sealing ring. During use, it no longer comes into direct contact with the inner wall of the silver cup, which reduces wear and scratches, prevents damage to the silver inner liner, maintains the aesthetics of the thermos cup, extends its service life, and reduces silver loss.

[0016] 2. The tea strainer is installed inside the lower cover, making installation simple and convenient, and easy to clean;

[0017] 3. The top cover is designed with a rotating venting structure, which can prevent dust and insects from entering the cup to the greatest extent during the venting and heat dissipation process, making it safer to let the tea cool. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is an exploded view of the present invention;

[0020] Figure 2 This is an exploded cross-sectional view of this utility model;

[0021] Figure 3 This is a cross-sectional view of the present invention;

[0022] Figure 4 This is a sectional view of the lower cover of this utility model;

[0023] Figure 5 This is the front view of this utility model.

[0024] The annotations in the attached figures are explained as follows:

[0025] 1. Lower cover; 11. Lower sleeve; 12. Stepped ring; 13. Upper sleeve; 2. Lower sealing ring; 3. Tea grate; 4. Upper cover; 401. Lower screw cap; 402. Upper screw cap; 403. Vent hole; 404. Sealing body; 405. Vent channel; 406. Fixing post; 407. Limiting groove; 408. Notch groove; 409. Limiting strip; 410. Anti-slip groove; 5. Upper sealing ring; 6. Lifting rope retainer; 7. Sterling silver inner sleeve; 8. Sterling silver outer sleeve. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] like Figures 1-5As shown, the teacup lid with a quick-release tea filter structure includes a lower lid body 1, which is threadedly installed at the mouth of a thermos. The lower lid body 1 includes a lower sleeve 11 and an upper sleeve 13, both integrally molded from food-grade plastic. This integral design ensures the strength and sealing of the overall structure, avoiding potential leakage and assembly errors that may occur with separate connections. The inner diameter of the lower sleeve 11 is formed with internal threads that mate with the threads of the cup mouth. The outer diameter of the upper sleeve 13 is smaller than the inner diameter of the lower sleeve 11, ensuring that the lower lid body 1 can be easily screwed into the mouth of a standard thermos. The outer wall of the upper sleeve 13 is formed with external threads. The external thread of the upper sleeve 4 is the same as the thread at the mouth of the thermos, allowing the upper sleeve 4 to be directly screwed onto the mouth of the thermos. A stepped ring 12 is formed at the connection between the lower sleeve 11 and the upper sleeve 13. The inner diameter of the stepped ring 12 is smaller than the inner diameter of the upper sleeve 13. This stepped ring 12 not only provides axial positioning and support for the lower sealing ring 2, but its smaller inner diameter also forms a step, which axially limits the insertion of the tea comb 3, preventing it from being over-inserted into the thermos. The lower sealing ring 2 is nested outside the stepped ring 12, and the tea comb 3 is inserted into the inner cavity of the lower sealing ring 2 through a transition fit. The tea comb 3 connects to the lower sealing ring 2 through its smooth cylindrical outer wall. The transition fit within the inner cavity of the sealing ring 2 secures the tea comb 3, making its installation and removal (especially during cleaning) extremely quick and convenient (i.e., "quick release"). It can be pulled out or inserted simply by overcoming the elastic force of the sealing ring. The lower sealing ring 2 is made of food-grade silicone or other elastic materials. Here, the lower sealing ring 2 not only provides a seal but also acts as an elastic fixing element. A food-grade plastic upper cover 4 is threadedly connected to the upper sleeve 13, achieving modular assembly of the cup lid body. The upper cover 4 contains an inner sealing ring that contacts the upper surface of the upper sleeve 13. The sealing ring 5, the upper sealing ring 5 is made of food-grade silicone and other elastic materials to ensure the main seal between the cup mouth and the upper lid 4 when the cup lid is closed, preventing liquid leakage and heat loss. The outer wall of the lower sleeve 11 is covered with a pure silver outer sleeve 8, and the inner wall of the upper sleeve 13 is covered with a pure silver inner sleeve 7. The upper end of the pure silver inner sleeve 7 covers the upper end face of the upper sleeve 13. The pure silver coating covers the key surfaces in contact with water (inner wall, upper end face and outer decorative surface). Utilizing the natural antibacterial and bactericidal properties of silver ions, it can effectively inhibit bacterial growth, improve drinking water hygiene and health, and at the same time enhance the texture and value of the product.

[0028] In another preferred embodiment of the present invention, the outer wall of the tea comb 3 is a smooth cylindrical shape. The smooth surface facilitates insertion and removal. At the same time, reliable radial sealing and fixation are achieved by the close contact of the mating surfaces and the elastic deformation of the lower sealing ring 2. The upper end of the tea comb 3 is formed with an outwardly folded limiting ring. The outer diameter of the limiting ring is larger than the inner diameter of the stepped ring 12. After the tea comb 3 is inserted into place, the outwardly folded limiting ring will abut against the upper surface of the stepped ring 12 or the upper end face of the lower sealing ring 2 to form an axial limit, preventing the tea comb 3 from accidentally falling off and dropping to the bottom of the cup under the impact of gravity or water flow. The tea comb 3 is made of silver sheet stamping. Silver material not only has good ductility and is easy to process, but its antibacterial properties are also particularly important for the tea filter structure.

[0029] In another preferred embodiment of the present invention, an annular groove is formed on the outer circle of the lower sealing ring 2 to cooperate with the stepped ring 12. The groove and the outer contour of the stepped ring 12 form a snap fit to ensure that the lower sealing ring 2 is stably positioned on the stepped ring 12 and to prevent it from shifting or falling off under the insertion and removal of the tea comb 3 or the impact of water flow. The upper lip plate of the lower sealing ring 2 contacts the inner wall of the upper sleeve 13, and the lower lip plate of the lower sealing ring 2 contacts the inner wall of the lower sleeve 11. The lower sealing ring 2 is made of elastic materials such as food-grade silicone. Its elasticity not only provides the necessary sealing force, but also forms the basis for the quick-release and fixation of the tea comb 3.

[0030] In another preferred embodiment of the present invention, an annular groove is formed on the outer wall of the lower sleeve 11, and a lifting cord retainer 6 is detachably connected and installed in the annular groove. The annular groove provides precise installation positioning and radial limit for the lifting cord retainer 6. The detachable connection design facilitates the replacement, cleaning or personalized configuration of the lifting cord. The lifting cord retainer 6 is made of plastic. The plastic (such as PP, PE, etc.) is selected mainly because of its low cost, easy processing and molding, light weight, insulation (avoiding the transfer of hot hands), and certain elasticity and toughness. The lifting cord retainer 6 is equipped with a lifting cord, which provides portability and makes it convenient for users to carry a thermos cup with a lid or hang the lid when pouring water.

[0031] As another preferred embodiment of the present invention, the upper cover 4 includes a lower screw cap 401 that is threadedly connected to the lower cover 1. The lower screw cap 401 is an annular double-layer stepped boss with an opening at the lower end. The lower step accommodates the upper sealing ring 5 to ensure the main seal. The outer wall of the upper step serves as the sealing surface, and the inner wall space is used to install the rotation limiting structure. The upper sealing ring 5 is installed inside the step of the lower cap 401. Several vent holes 403 are formed on the upper side wall of the lower cap 401, connecting to the outer wall of the upper step. This is the first outlet for hot steam to exit the cup. An upper cap 402 is rotatably installed on the outside of the upper step of the lower cap 401. The upper cap 402 and the lower cap 401 are vertically limited by an axially installed snap-fit, preventing vertical movement after assembly. An exhaust channel 405 is formed at the lower end of the upper cap 402, guiding steam to the outside of the upper cap 402 for safe discharge and rapid cooling. A sealing body 404 is embedded and fixed on the inner side wall of the upper cap 402, ensuring its fixed position within the upper cap 402. The lip plate of the sealing body 404 is connected to the lower cap 401. The outer wall of the upper stepped boss makes transitional contact. The sealing body 404 is made of elastic materials such as food-grade silicone. The side wall of the sealing body 404 is formed with notches and grooves 408 that connect the vent hole 403 and the vent channel 405. The number and position of the notches and grooves 408 match the vent hole 403. When the notches and grooves 408 are aligned with the vent hole 403 on the lower cap 401, an airflow channel is formed. When misaligned, the channel is blocked. In the closed state, the lip plate is tightly pressed against the outer wall to completely seal the vent hole 403, ensuring the main sealing performance. In the venting state, even if the notches and grooves 408 are aligned with the vent hole 403, the lip plate still remains in contact, allowing steam to enter the vent channel 405 through the gap formed by the notches and grooves 408. At the same time, it can effectively prevent most liquids from splashing into the vent channel when shaking, thus playing a role in preventing splashing.

[0032] In another preferred embodiment of the present invention, a cylindrical fixing post 406 for mounting the upper cover 402 is fixed to the top of the lower cover 401, forming the axis of rotation of the upper cover 402 relative to the lower cover 401. A limiting strip 409 is formed on the side wall of the fixing post 406. A circular hole is formed in the top of the inner part of the upper cover 402 to cooperate with the fixing post 406. A limiting groove 407 is formed on the edge of the circular hole to cooperate with the limiting strip 409. The limiting strip 409 and the limiting groove 407 constitute the core mechanism for controlling the rotation angle and positioning: limiting the rotation range and preventing excessive rotation. The system precisely positions the open / closed state. Markings indicating the position after rotation can be machined on the side wall of the upper cap 402. When the limiting strip 409 abuts against one end of the limiting groove 407, the notch groove 408 corresponds to the vent hole 403. At this time, the notch groove 408 and the vent hole 403 are completely aligned, forming a venting channel with the maximum opening. When rotated to the other end, the notch groove 408 and the vent hole 403 are completely misaligned, and the solid part of the sealing body 404 blocks the vent hole 403, achieving a sealed closure. This ensures that the "open" and "closed" states are clear, stable, and reliable.

[0033] As another preferred embodiment of the present invention, at least one of the outer walls of the lower screw cap 401 and the upper screw cap 402 is formed with anti-slip grooves 410. This design significantly enhances the friction when the user rotates the device, prevents slippage, and improves the convenience and safety of operation.

[0034] In another preferred embodiment of the present invention, the outer walls of the lower cap 401 and the upper cap 402 are covered with a pure silver outer sleeve 8, providing a silver antibacterial layer on the outer decorative surface.

[0035] As another preferred embodiment of the present invention, the upper stepped protrusion of the lower cap 401 is inlaid with a pure silver inner sleeve 7, which covers the surface inside the lower cap 401 that may come into contact with moisture, thereby expanding the antibacterial range.

[0036] The working principle of this utility model is as follows: When in use, the lower cover 1 is screwed onto the thermos bottle body. The tea strainer 3 is fixed inside the lower cover 1 by the elasticity of the lower sealing ring 2. When brewing tea, put the tea leaves into the cup body and pour hot water directly into the cup body to brew the tea. When drinking the tea, simply remove the upper cover 4. The tea strainer 3 inside the lower cover 1 can filter the tea leaves. If the tea is too hot and needs to be cooled, there is no need to unscrew the upper cover 4. Simply rotate the upper cap 402 until it reaches its limit position, and the notch 408 aligns with the vent 403. At this time, the hot air inside the thermos can be directly discharged to the outside of the thermos through the vent 403, the notch 408, and the vent channel 405, thus achieving cooling. During this process, the lip plate of the sealing body 404 remains in contact with the outer wall of the lower cap 401, effectively preventing liquid splashing. To prevent foreign objects (flying insects, dust) from falling into the cup when the lid is opened to cool down, the pure silver coating (pure silver outer sleeve 8, pure silver inner sleeve 7) continuously exerts its antibacterial effect to ensure drinking water hygiene.

[0037] Components not described in detail in this article are existing technologies.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A teacup lid with a quick-release tea strainer structure, characterized in that: The device includes a lower cover (1), which is threadedly installed at the mouth of the thermos. The lower cover (1) includes an integrally formed lower sleeve (11) and an upper sleeve (13). The inner diameter of the lower sleeve (11) is formed with an internal thread that mates with the thread at the mouth of the thermos. The outer diameter of the upper sleeve (13) is smaller than the inner diameter of the lower sleeve (11). The outer wall of the upper sleeve (13) is formed with an external thread, which is the same as the thread at the mouth of the thermos. A stepped ring (12) is formed at the connection between the lower sleeve (11) and the upper sleeve (13). 2) The inner diameter is smaller than the inner diameter of the upper sleeve (13). The stepped ring (12) is nested with a lower sealing ring (2). A tea comb (3) is inserted into the inner cavity of the lower sealing ring (2) through a transition fit. The upper sleeve (13) is connected to the upper cover (4) by a threaded connection. The upper cover (4) is inlaid with an upper sealing ring (5) that contacts the upper end face of the upper sleeve (13). The outer wall of the lower sleeve (11) is covered with a pure silver outer sleeve (8). The inner wall of the upper sleeve (13) is covered with a pure silver inner sleeve (7). The upper end of the pure silver inner sleeve (7) covers the upper end face of the upper sleeve (13).

2. The teacup lid with quick-release tea filter structure according to claim 1, characterized in that: The outer wall of the tea comb (3) is a smooth cylindrical shape, and the upper end of the tea comb (3) is formed with an outwardly folded limiting ring. The tea comb (3) is formed by stamping silver plate.

3. The teacup lid with quick-release tea filter structure according to claim 1, characterized in that: The lower sealing ring (2) has an annular groove formed on its outer circle to cooperate with the stepped ring (12). The upper lip plate of the lower sealing ring (2) contacts the inner wall of the upper sleeve (13), and the lower lip plate of the lower sealing ring (2) contacts the inner wall of the lower sleeve (11).

4. The teacup lid with quick-release tea filter structure according to claim 1, characterized in that: The lower sleeve (11) has an annular groove formed on its outer wall. A lifting rope retainer (6) is detachably connected and installed in the annular groove. The lifting rope retainer (6) is made of plastic and a lifting rope is installed on the lifting rope retainer (6).

5. The teacup lid with quick-release tea filter structure according to claim 1, characterized in that: The upper cover (4) includes a lower cap (401) that is threadedly connected to the lower cover (1). The lower cap (401) is an annular double-layer stepped boss with an opening at the lower end. The upper sealing ring (5) is installed at the inner step of the lower cap (401). Several vent holes (403) are formed on the upper inner side wall of the lower cap (401) and communicate with the outer wall of the upper step of the lower cap (401). The upper step of the lower cap (401) An upper cap (402) is externally rotatably mounted. An exhaust channel (405) is formed at the lower end of the upper cap (402). A sealing body (404) is embedded and fixed on the inner side wall of the upper cap (402). A notch (408) is formed on the side wall of the sealing body (404) to connect the exhaust hole (403) and the exhaust channel (405). The lip plate of the sealing body (404) is in transition contact with the outer wall of the stepped boss on the lower cap (401).

6. The teacup lid with quick-release tea filter structure according to claim 5, characterized in that: The top of the lower cap (401) is fixed with a cylindrical fixing post (406) for mounting the upper cap (402). A limiting strip (409) is formed on the side wall of the fixing post (406). A round hole is formed in the top of the upper cap (402) to cooperate with the fixing post (406). A limiting groove (407) is formed on the edge of the round hole to cooperate with the limiting strip (409). When the limiting strip (409) abuts against one end of the limiting groove (407), the notch (408) corresponds to the position of the exhaust hole (403).

7. The teacup lid with quick-release tea filter structure according to claim 5, characterized in that: At least one of the lower cap (401) and the upper cap (402) has an anti-slip groove (410) formed on its outer wall.

8. The teacup lid with quick-release tea filter structure according to claim 5, characterized in that: The outer walls of the lower cap (401) and the upper cap (402) are covered with the pure silver outer sleeve (8).

9. The teacup lid with quick-release tea filter structure according to claim 5, characterized in that: The upper stepped protrusion of the lower screw cap (401) is inlaid with the pure silver inner sleeve (7).

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