Lifting handle integrated vessel cover and manufacturing method thereof

Abstract

The invention discloses an integrated vessel cover which comprises a cover body used for being connected to a vessel and a lifting handle connected to the cover body, the lifting handle and the cover body are manufactured into an integrated structure through an injection molding process, and the lifting handle comprises two connecting parts connected to the cover body and a lifting ring part connected between the two connecting parts. In the initial state, the lifting ring part tilts in the direction away from the cover body, the connecting position of the lifting ring part and the connecting part has elasticity so that the lifting ring part can swing in the direction close to or away from the cover body, and a locking structure for locking the lifting ring part when the lifting ring part gets close to the cover body is arranged between the lifting ring part and the cover body. The invention aims to overcome the defects in the prior art, provides an integrated vessel cover with structural reliability, compactness and a storage function, and further provides a manufacturing method for processing the structure.

Description

Technical Field

[0001] This invention specifically relates to a container lid with an integrated handle and its manufacturing method. Background Technology

[0002] In everyday life and industrial packaging, containers (such as bottles, jars, and barrels) are typically equipped with lids to achieve functions such as sealing, dust prevention, and leak prevention. To facilitate opening, handling, or carrying, many container lids integrate handles. In traditional designs, the handle and lid are often separate components, meaning the handle is fixed to the lid through subsequent assembly (such as snap-fit, riveting, or gluing). While this structure achieves basic functions, it suffers from problems such as a large number of parts, complex assembly processes, high costs, and a tendency to loosen or detach, and it is also unfavorable for automated production.

[0003] To simplify the structure and improve overall integrity, the inventors attempted to use injection molding to integrally mold the handle and the lid. However, in practical applications, the integral handle structure faces significant technical challenges: on the one hand, if the handle is designed to be retractable (i.e., unfolded when in use and fitted to the lid when not in use), it often needs to be fitted with buckles, hinges or other locking mechanisms. These structures are very prone to failure to demold smoothly due to mold interference during injection molding. On the other hand, if the handle is directly injection molded into a vertical or fitted state, it is limited by the inherent elasticity and resilience of the plastic material. After demolding, the handle is prone to warping due to the release of internal stress, making it difficult to maintain a stable retracted posture, affecting the product's appearance and stacking and transportation.

[0004] This invention was developed precisely because of the aforementioned shortcomings. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide an integrated utensil lid that combines structural reliability, compactness, and storage function, as well as a manufacturing method for processing such a structure.

[0006] This invention is achieved through the following technical solution:

[0007] This invention provides an integrated handle utensil lid, comprising a lid body for attaching to a utensil and a handle attached to the lid body. The handle and lid body are integrally formed by injection molding. The handle includes two connecting parts attached to the lid body and a lifting ring connecting the two connecting parts. In the initial state, the lifting ring is tilted away from the lid body, and the connection position between the lifting ring and the connecting parts is elastic, allowing the lifting ring to swing towards or away from the lid body. A locking structure is provided between the lifting ring and the lid body to lock the lifting ring when it approaches the lid body.

[0008] As described above, the lid with an integrated handle has a mating boss on the top of the lid body. The connecting part is connected to the cylindrical surface of the mating boss. When the lifting ring swings away from the lid body, the lifting ring stands on the upper side of the mating boss for people to lift. When the lifting ring comes close to the lid body, the lifting ring is stored around the mating boss.

[0009] As described above, the locking structure of the integrated handle utensil lid includes a first locking part that is provided on the cylindrical surface of the mating boss and protrudes outward, and a second locking part that is provided on the lifting ring and engages with the first locking part when it is close to the lid body.

[0010] As described above, the handle-integrated utensil lid has a flat plate extending from one connecting part to another and intersecting with a vertical plate, and the second snap-fit ​​part is provided on the side wall of the vertical plate.

[0011] As described above, in the integrated handle utensil lid, the vertical plate gradually narrows in width near the connecting part.

[0012] As described above, in the integrated handle utensil lid, the included angle α between the handle ring and the upper surface of the lid body satisfies 5°≤α≤45°.

[0013] As described above, in the integrated handle utensil lid, the flat plate and the vertical plate intersect at right angles.

[0014] As described above, the lid with an integrated handle has vertically arranged anti-slip ribs on its side wall.

[0015] As described above, the lid with an integrated handle has a sealing rib on its inner side wall for abutting against the top of the container.

[0016] The present invention also provides a manufacturing method for processing the above-mentioned integrated handle utensil lid, comprising the following steps: S1, forming an integrated blank by injection molding, the blank having a lid body and a handle, the handle having a lifting ring portion and connecting portions connected to both ends of the lifting ring portion, and the lifting ring portion being raised away from the lid body; S2, a locking structure is provided between the lifting ring portion and the lid body, which locks the lifting ring portion when it approaches the lid body, and the lifting ring portion is pressed against the lid body by a robotic arm or a human hand until the lifting ring portion is locked.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] 1. Achieving a balance between one-piece injection molding and reliable storage: By initially designing the lifting ring to be in an upward-curving state and setting an elastic thinning area between the connecting part and the lifting ring, the demolding difficulties caused by structural interference in traditional one-piece handles are effectively avoided; at the same time, with the locking structure, the lifting ring can stably adhere to the cover and be reliably locked after pressing, solving the technical problem that plastic handles cannot maintain the storage state due to elastic rebound.

[0019] 2. The structure is strong, easy to operate, and compatible with automated production. The lifting ring adopts a reinforced structure with a right-angle intersection of a flat plate and a vertical plate, and the snap-fit ​​part is set on the side wall of the vertical plate, which significantly improves the bending and torsional resistance during lifting. The locking structure adopts a simple protruding snap-fit ​​form, which is easy to unlock and reliable to lock. The entire pressing process can be automatically completed by a robot with a soft anti-wear pad, which is compatible with high-speed production lines and takes into account both user experience and manufacturing efficiency.

[0020] 3. High functional integration and excellent overall performance: The lid integrates multiple functional structures such as sealing ribs, anti-slip ribs, and matching bosses. While ensuring reliable sealing with the container and anti-slip screwing, it also provides support and storage space for the handle. The overall design is compact and reasonable, and it is suitable for various containers such as bottles, cans, and barrels, with good versatility and practicality. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the integrated handle lid of the present invention;

[0022] Figure 2 This is a cross-sectional schematic diagram of the integrated handle lid of the present invention;

[0023] Figure 3 This is a partial cross-sectional schematic diagram of the integrated handle lid of the present invention;

[0024] Figure 4 This is a schematic diagram showing the usage state of the integrated handle and lid of the present invention. Detailed Implementation

[0025] The invention will be further described below with reference to the accompanying drawings:

[0026] The orientations described in this invention specification, such as "up," "down," "left," "right," "front," and "back," are based on the orientations in the accompanying drawings and are intended to facilitate the description of the relationships between the various components. They do not indicate the unique or absolute positional relationships between the various components, but are merely one embodiment of the invention and are not a limitation on its implementation.

[0027] This embodiment describes a utensil lid with an integrated handle, comprising a lid body 1 and a handle 2. The handle 2 and the lid body 1 are integrally formed by injection molding. Figure 4 As shown. The lid 1 is used to connect to a container A, such as a bottle, jar, or bucket. The lid 1 is connected to the container A by means of snap-fit, threaded connection, or other methods. The handle 2 includes two connecting parts 21 and a lifting ring 22. The two connecting parts 21 are connected to the lid 1, and the lifting ring 22 extends from one connecting part 21 to the other connecting part 21 to form a pull ring.

[0028] In traditional injection molding processes, if a snap-fit ​​structure is used between the handle 2 and the cover 1, interference between the components will prevent injection molding. If the handle 2 is molded vertically during injection molding, its elasticity and toughness will prevent it from fitting snugly against and retracting into the cover 1. Therefore, if... Figure 1 and Figure 2 As shown, in this embodiment, in the initial state, the lifting ring 22 is tilted away from the cover 1, and the connection position between the lifting ring 22 and the connecting part 21 is elastic, allowing the lifting ring 22 to swing towards or away from the cover 1. The connection area between the lifting ring 22 and the connecting part 21 can achieve a certain degree of elasticity by thinning the material, thereby providing necessary flexible deformation capability while ensuring structural strength. A locking structure 3 is provided between the lifting ring 22 and the cover 1 to lock the lifting ring 22 when it approaches the cover 1.

[0029] The above structural design not only solves the problem of difficult demolding due to structural interference in traditional one-piece injection molding, but also enables the handle to naturally curl up in the factory state (facilitating identification and subsequent automated assembly). It also allows users to manually or mechanically press it into a folded-away state before use, balancing functionality and production feasibility. Specifically, this structure can be molded in a standard injection mold in one step, eliminating the need for secondary assembly or complex sliding mechanisms, significantly reducing manufacturing costs and improving yield. Furthermore, the lifting ring 22 can be reliably locked to the cover surface when not in use, preventing accidental pop-up during transportation or stacking, improving the overall neatness of the product and the user experience.

[0030] With the above structure, an integral utensil lid can be made by injection molding. The lifting ring 22 is inclined upward relative to the lid body 1. Then, the lifting ring 22 is pressed against the lid body 1 by a robot or human hand, so that the lifting ring 22 is locked and stored in the position close to the lid body 1.

[0031] As a preferred option, such as Figure 2As shown, the inclined angle α between the lifting ring 22 and the upper surface of the cover 1 satisfies 5°≤α≤45°. When the inclined angle α<5°, the small structural spacing is not conducive to mold opening, which can easily cause demolding difficulties or even damage to the product; when α>45°, the center of gravity of the lifting ring 22 is easily offset too much, requiring a larger force during the pressing process, and it is difficult to stably adhere to the surface of the cover 1, affecting the locking reliability and ease of operation. The setting of this angle range takes into account the mold processability, structural stability and ergonomic requirements.

[0032] As a preferred option, such as Figure 1 As shown, the top of the cover 1 is provided with a mating boss 11, and the connecting part 21 is connected to the cylindrical surface of the mating boss 11. Furthermore, when the lifting ring 22 swings away from the cover 1, the lifting ring 22 stands upright on the mating boss 11 for easy lifting; when the lifting ring 22 approaches the cover 1, it is retracted into the periphery of the mating boss 11. This mating boss 11 not only provides a stable mounting base for the handle but also forms a support platform during lifting, effectively dispersing the lifting force and preventing structural breakage caused by stress concentration.

[0033] As a preferred option, such as Figure 2 and Figure 3 As shown, the locking structure 3 includes a first engaging portion 12 protruding outward from the cylindrical surface of the mating boss 11, and a second engaging portion 23 on the lifting ring portion 22 that engages with the first engaging portion 12 when it approaches the cover body 1. Both the first engaging portion 12 and the second engaging portion 23 are protrusions. When the lifting ring portion 22 presses against the cover body 1, the second engaging portion 23 can engage from above below the first engaging portion 12, completing the engagement and achieving the locking function. In use, simply pulling out the lifting ring portion 22 with slight force unlocks the mechanism. This engaging structure adopts a "hook-type" engagement method, utilizing the elastic deformation of the plastic part itself to achieve unidirectional locking. It is simple in structure, reliable in operation, and requires no additional parts, meeting the requirements of low-cost, high-efficiency mass production.

[0034] As a preferred option, such as Figure 3As shown, the lifting ring 22 has a flat plate 221 extending from one connecting part 21 to another, and a vertical plate 222 intersecting the flat plate 221. The second snap-fit ​​part 23 is provided on the side wall of the vertical plate 222, which can enhance the mechanical strength of the lifting ring 22 and prevent twisting or breakage during lifting. Preferably, the flat plate 221 and the vertical plate 222 intersect at right angles, forming a "T"-shaped or "I"-shaped cross-section structure, which significantly improves bending stiffness. In order to enable the connection area between the lifting ring 22 and the connecting part 21 to achieve elastic bending by thinning the material, the width of the vertical plate 222 gradually narrows in the direction near the connecting part 21, and the vertical plate 222 terminates near the connection area. This gradually narrowing design ensures the flexibility of the connection part and avoids sudden stress changes, thus extending the product's service life.

[0035] As a preferred option, such as Figure 1 As shown, the side wall of the cover 1 is provided with vertically arranged anti-slip ribs 13. These anti-slip ribs 13 provide additional friction when the user twists the cover, which is especially suitable for operation scenarios where hands are wet or gloves are worn, improving the convenience and safety of opening / closing.

[0036] As a preferred option, such as Figure 1 As shown, the inner wall of the lid 1 is provided with a sealing rib 14 for abutting against the top of the container. After the lid is tightened, the sealing rib 14 fits tightly against the open end face of the container A, forming an effective sealing interface to prevent leakage of contents or intrusion of external contaminants. It is suitable for containers of liquids, powders or materials that need to be preserved.

[0037] The manufacturing method for the above-mentioned one-piece utensil lid includes the following steps:

[0038] S1. A one-piece blank is made by injection molding. The blank has a cover 1 and a handle 2. The handle 2 has a lifting ring 22 and a connecting part 21 connected to both ends of the lifting ring 22. The lifting ring 22 is tilted away from the cover 1.

[0039] S2. A locking structure 3 is provided between the lifting ring 22 and the cover 1 to lock the lifting ring 22 when it approaches the cover 1. The lifting ring 22 is pressed against the cover 1 by a robotic arm or a human hand until the lifting ring 22 is locked.

[0040] In step S2, such as Figure 2As shown, preferably, a robotic arm can press the lifting ring 22 against the cover 1. The robotic arm is equipped with a pressure block B, which has a soft anti-wear pad B1 and a protruding portion B2 that presses against the lifting ring 22. This automated pressing method is suitable for high-speed production lines. The soft anti-wear pad B1 prevents scratches or damage to the surface of the lifting ring 22 during the pressing process, ensuring product appearance quality. The protruding portion B2 precisely positions the force application point, ensuring the consistency and reliability of each pressing action. This facilitates fully automated assembly, improves production efficiency, and reduces labor costs.

[0041] The above descriptions are merely embodiments of the present invention, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A utensil lid with an integrated handle, characterized in that: The container includes a lid (1) for attaching to a vessel and a handle (2) attached to the lid (1). The handle (2) and the lid (1) are integrally formed by injection molding. The handle (2) includes two connecting parts (21) attached to the lid (1) and a lifting ring (22) connected between the two connecting parts (21). In the initial state, the lifting ring (22) is tilted away from the lid (1), and the connection position between the lifting ring (22) and the connecting parts (21) is elastic, allowing the lifting ring (22) to swing towards or away from the lid (1). A locking structure (3) is provided between the lifting ring (22) and the lid (1) to lock the lifting ring (22) when it approaches the lid (1).

2. The integrated handle lid for a vessel according to claim 1, characterized in that: The top of the cover (1) is provided with a mating boss (11), and the connecting part (21) is connected to the cylindrical surface of the mating boss (11). When the lifting ring (22) swings away from the cover (1), the lifting ring (22) stands on the upper side of the mating boss (11) for people to lift. When the lifting ring (22) approaches the cover (1), the lifting ring (22) is stored in the periphery of the mating boss (11).

3. The integrated handle lid for a vessel according to claim 2, characterized in that: The locking structure (3) includes a first locking part (12) provided on the cylindrical surface of the mating boss (11) and protruding outward, and a second locking part (23) provided on the lifting ring part (22) and engaging with the first locking part (12) when it approaches the cover (1).

4. The integrated handle lid for a vessel according to claim 3, characterized in that: The lifting ring (22) has a flat plate (221) extending from one connecting part (21) to another connecting part (21) and intersecting with a vertical plate (222), and the second snap-fit ​​part (23) is provided on the side wall of the vertical plate (222).

5. The integrated handle lid for a vessel according to claim 4, characterized in that: The width of the vertical plate (222) gradually narrows in the direction near the connecting part (21).

6. The integrated handle lid for a vessel according to claim 4, characterized in that: The flat plate (221) and the vertical plate (222) intersect at right angles.

7. The integrated handle lid for a vessel according to any one of claims 1 to 6, characterized in that: The angle α between the lifting ring (22) and the upper surface of the cover (1) satisfies 5°≤α≤45°.

8. The integrated handle lid for a vessel according to any one of claims 1 to 6, characterized in that: The cover (1) has vertically arranged anti-slip ribs (13) on its side wall.

9. The integrated handle lid for a vessel according to any one of claims 1 to 6, characterized in that: The inner wall of the lid (1) is provided with a sealing rib (14) for abutting against the top of the vessel.

10. A method for manufacturing the integrated handle lid of claim 1, characterized in that it comprises the following steps: S1. A one-piece blank is formed by injection molding. The blank has a cover (1) and a handle (2). The handle (2) has a lifting ring (22) and a connection to the lifting ring (22). The connecting portions (21) at both ends, and the lifting ring portion (22) is raised in a direction away from the cover (1); S2. A locking structure (3) is provided between the lifting ring (22) and the cover (1) to lock the lifting ring (22) when it approaches the cover (1). The lifting ring (22) is pressed against the cover (1) by a robot or a human hand until the lifting ring (22) is locked.

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