Cup cover sealing ring screwing abnormal sound improvement structure

Abstract

This utility model relates to a structure for improving the noise generated during the screwing of a cup lid sealing ring. It includes a lid body, a screwing part, and an annular seal. The screwing part has threads on its side wall and is fixedly mounted on the bottom of the lid body, coaxially with it. The annular seal is fitted onto the top of the screwing part and pressed against the bottom of the lid body. The annular seal includes a sealing ring and multiple vertical ribs evenly spaced along the outer circumference of the annular seal. This design, through optimization of the sealing ring structure, avoids vibration during the screwing process, thus preventing noise from the cup lid during screwing.

Description

Technical Field

[0001] This utility model relates to the field of drinking water appliance technology, and in particular to a structure for improving the noise of a cup lid sealing ring when screwed on. Background Technology

[0002] As a crucial component of containers, the sealing performance and user experience of cup lids directly impact product quality. In existing technologies, cup lids typically achieve a seal by screwing them onto the cup body using a silicone rubber ring. However, during the screwing process, the frictional rebound effect when the sealing ring contacts the cup rim can easily cause high-frequency, micro-vibrations in the lid. This can lead to continuous knocking between the lid's threads and the cup's threads, producing noticeable abnormal noise. This noise is particularly pronounced during rapid rotation or normal screwing operations, not only affecting the user experience but also potentially causing consumers to question the product's structural stability.

[0003] like Figure 4 The diagram illustrating the deformation principle of the rubber band shows that when the cup lid and rim first come into contact, the rubber band body, the contact point of the rubber band, and the contact point of the rim are all aligned longitudinally along the same meridian. As the lid continues to rotate, the rubber band body moves from point A to point B with the lid; however, the contact point remains stationary at point A due to friction. When the lid rotates to point C, because there is a gap between the threads of the lid and the cup body, they are not subjected to external force when engaged. At this point, the rebound force generated by the compression of the silicone allows the lid to move upwards, and the friction decreases or disappears. The contact point returns directly to its original position from point A to point C, at which point vibration occurs (this phenomenon is described using only one magnified point; in reality, there are countless contact points, and the distance or deformation between each point is extremely small, at the micrometer level, and imperceptible to the human eye).

[0004] While squeezing the lid, slowing down the rotation speed, or screwing it into a specific position can reduce or eliminate the noise to some extent, these methods rely on the user's operating habits and cannot fundamentally solve the design flaws, and also reduce ease of use. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a structure to improve the abnormal noise of the sealing ring when the cup lid is screwed on. By optimizing the design of the sealing ring structure, the vibration generated during the screwing process is avoided, thus preventing the abnormal noise of the cup lid during the screwing process.

[0006] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0007] A structure for improving the noise of a cup lid sealing ring during screwing includes a lid body, a screwing part, and an annular seal. The screwing part has threads on its side wall and is fixedly mounted on the bottom of the lid body and coaxially arranged with the lid body. The annular seal is sleeved on the top of the screwing part and pressed against the bottom of the lid body. The annular seal includes a sealing ring and vertical ribs. Multiple vertical ribs are provided and are evenly spaced along the outer circumference of the annular seal.

[0008] Background technology indicates that the physical chain causing abnormal noise is "rubber ring rebound—high-frequency micro-amplitude vibration of the cup lid—continuous knocking of the screw threads". This solution adds circumferentially evenly distributed vertical ribs to the outer ring of the sealing ring. These ribs contact the inner wall of the cup opening before the sealing ring, forming a continuous and stable lateral friction force. This friction force reduces the energy accumulation of "friction-rebound" between the sealing ring and the cup opening, directly cutting off the vibration source and thus avoiding the knocking sound of the screw threads, achieving a noise reduction effect. Specifically, with ordinary rubber rings, the abnormal noise is significantly reduced during slow screwing because the screwing speed is not abrupt. The annular seal with added vertical ribs provides constant damping force throughout the screwing process, ensuring that the threads of the cup lid and the cup body always maintain a tight fit, avoiding impact vibration caused by the sudden disappearance of local gaps, and ensuring a quiet user experience at normal screwing speeds. Furthermore, when the cup lid is screwed on, the vertical ribs contacting the cup opening first can act as a "pre-positioning" mechanism, making the contact between the annular seal and the inner wall of the cup opening more uniform and reducing local stress concentration. Meanwhile, the vertical ribs and the sealing ring form a two-stage seal, which improves the overall sealing reliability and achieves noise reduction and quiet operation during the screwing process without reducing the leak-proof performance.

[0009] Furthermore, the sealing ring includes an upper sealing lip and a lower sealing lip, which are fixedly connected. The inner diameters of the upper and lower sealing lips are the same, while the outer diameter of the upper sealing lip is larger than that of the lower sealing lip. Multiple vertical ribs are evenly distributed circumferentially along the connection point of the outer rings of the upper and lower sealing lips, with their upper and lower ends extending to the upper and lower sealing lips respectively. The design of the upper sealing lip having a larger outer diameter than the lower sealing lip ensures that, upon initial engagement, the upper sealing lip and its extended vertical ribs first contact the cup opening, providing continuous and gentle lateral damping. After further engagement, the lower sealing lip achieves radial compression with the lower section of the cup opening. This gradient design avoids the problem of rebound energy accumulation caused by the instantaneous full compression of traditional single-stage rubber rings, directly blocking sudden vibration changes and thus preventing abnormal noise.

[0010] Furthermore, the outer surface of the vertical rib is at the same height as the upper sealing lip, and the axial length of the vertical rib covers at least half of the height of the sealing ring. The abnormal noise generated when the cup lid is screwed on originates from the stepped release of energy between the rubber ring and the cup opening during the screwing process—a process of "pre-compression—abrupt change—rebound." The vertical rib forms a continuous damping band in the axial direction, flush with the upper sealing lip, and the length of this damping band is greater than half the total height of the sealing ring. This indicates that throughout most of the screwing stroke, the vertical rib remains in contact with the inner wall of the cup opening, providing constant lateral friction. This continuous damping band avoids the segmented vibration phenomenon of "contact-disengagement-re-contact" that occurs during the screwing on of traditional rubber rings, fundamentally cutting off the energy source of the knocking sound.

[0011] Furthermore, a groove is formed at the top of the upper sealing lip, extending downwards to the middle of the upper sealing lip. Multiple grooves are evenly spaced along the circumference of the top of the upper sealing lip. The groove provides additional deformation space for the upper sealing lip, allowing for automatic adjustment of the compression amount when manufacturing errors occur in the cup opening height and end face parallelism, thus achieving automatic error compensation. This method reduces over-tightening or over-loosening due to dimensional fluctuations, ensuring consistent noise reduction performance in mass-produced products.

[0012] Furthermore, a receiving groove is provided circumferentially at the top of the side wall of the screw-in part, and the annular seal is installed in the receiving groove. The receiving groove achieves precise positioning of the annular seal. In the radial direction, the annular seal mates with the inner wall of the receiving groove to ensure that the center of the annular seal is coaxial with the center of the screw-in part, avoiding local overpressure or leakage caused by eccentricity; in the axial direction, the bottom of the receiving groove provides a clear compression reference for the annular seal, thereby ensuring that the compression amount is consistent each time it is screwed in, eliminating torque fluctuations caused by different installation depths; in the circumferential direction, the groove wall restricts the circumferential slippage of the annular seal as the cap rotates, preventing the annular seal from twisting, maintaining the continuous fit between the vertical rib and the inner wall of the cup, and thus ensuring a damping effect throughout the process.

[0013] Furthermore, the annular seal is a one-piece molded silicone ring component. The annular seal is integrally molded during the silicone injection process, without increasing the number of parts or altering the original threads and assembly process of the cup cap and body. Modifications to the mold are limited to adding micro-ribs to the cavity; the mold changes are minimal, and the impact on silicone usage is negligible. Therefore, it does not significantly increase material costs and offers excellent economic efficiency for mass production.

[0014] In summary, this cup lid sealing ring screw-on noise improvement structure, through optimization of the sealing ring structure design, avoids the generation of vibration during the screwing-on process, thus preventing abnormal noise from the cup lid during screwing-on. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0016] Figure 1 This is a schematic diagram of the overall assembly structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the annular seal of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the receiving groove of this utility model;

[0019] Figure 4 This is a diagram illustrating the principle of leather band deformation in the background art;

[0020] The components include: cover-1, screw-in part-2, receiving groove-21, annular seal-3, sealing ring-31, upper sealing lip-311, lower sealing lip-312, groove-313, and vertical rib-32. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0022] In the description of this utility model, it should be understood that the orientation and positional relationship indicated by terms such as "up", "down", "left", "right", "front", "back", "vertical", "bottom", "inner", and "outer" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0023] like Figure 1 The illustrated structure for improving the noise of a cup lid sealing ring during screwing includes a lid body 1, a screwing part 2, and an annular seal 3. The screwing part 2 has threads (not shown in the figure) on its side wall. The screwing part 2 is fixedly installed at the bottom of the lid body 1 and is coaxial with the lid body 1. The annular seal 3 is sleeved on the top of the screwing part 2 and abuts against the bottom of the lid body 1. The annular seal 3 includes a sealing ring 31 and vertical ribs 32. Multiple vertical ribs 32 are provided, and the multiple vertical ribs 32 are evenly spaced along the outer circumference of the annular seal 3.

[0024] Background technology indicates that the physical chain causing abnormal noise is "rubber ring rebound—high-frequency micro-amplitude vibration of the cup lid—continuous knocking of the screw threads". This solution adds circumferentially evenly distributed vertical ribs 32 to the outer ring of the sealing ring 31. The vertical ribs 32 contact the inner wall of the cup opening before the sealing ring 31, forming a continuous and stable lateral friction force. This friction force reduces the energy accumulation of "friction-rebound" between the sealing ring 31 and the cup opening, directly cutting off the vibration source, thus avoiding the knocking sound of the screw threads and achieving a noise reduction effect. Specifically, the abnormal noise is significantly reduced when a regular rubber ring is slowly screwed on because the screwing speed does not change abruptly. However, the annular seal 3 with added vertical ribs 32 provides a constant damping force throughout the screwing process, ensuring that the threads of the cup lid and the cup body always maintain a tight fit, avoiding impact vibration caused by the sudden disappearance of local gaps, and ensuring a quiet user experience at normal screwing speeds. Furthermore, when the cup lid is screwed on, the vertical rib 32 makes initial contact with the cup opening, which acts as a "pre-positioning" mechanism, ensuring more uniform contact between the annular seal 3 and the inner wall of the cup opening, thus reducing localized stress concentration. Simultaneously, the vertical rib 32 and the sealing ring 31 form a two-stage seal, enhancing the overall sealing reliability and achieving noise reduction and quiet operation during the screwing process without compromising leak-proof performance.

[0025] As a preferred option, such as Figure 2 As shown, the sealing ring 31 includes an upper sealing lip 311 and a lower sealing lip 312, which are fixedly connected. The inner diameters of the upper sealing lip 311 and the lower sealing lip 312 are the same, but the outer diameter of the upper sealing lip 311 is larger than that of the lower sealing lip 312. Multiple vertical ribs 32 are evenly arranged circumferentially along the connection between the outer rings of the upper and lower sealing lips 311 and 312, respectively. The design that the outer diameter of the upper sealing lip 311 is larger than that of the lower sealing lip 312 ensures that the upper sealing lip 311 and its extended vertical ribs 32 first contact the cup opening when the ring begins to screw on, providing continuous and gentle lateral damping. After further screwing, the lower sealing lip 312 achieves radial compression with the lower section of the cup opening. This gradient design avoids the problem of rebound energy accumulation caused by the instantaneous full compression of traditional single-stage rubber rings, directly blocking sudden vibration changes and thus preventing abnormal noise.

[0026] As a preferred option, such as Figure 2As shown, the outer surface of the vertical rib 32 is at the same height as the upper sealing lip 311, and the axial length of the vertical rib 32 covers at least half of the height of the sealing ring 31. The abnormal noise generated when the cup lid is screwed on originates from the stepped release of energy between the rubber ring and the cup opening during the screwing process—a process of "pre-compression—abrupt change—rebound." The vertical rib 32 forms a continuous damping band in the axial direction, flush with the upper sealing lip 311, and the length of this damping band is greater than half the total height of the sealing ring 31. This indicates that throughout most of the screwing stroke, the vertical rib 32 remains in contact with the inner wall of the cup opening, providing a constant lateral frictional force. This continuous damping band avoids the segmented vibration phenomenon of "contact—disengagement—re-contact" that occurs during the screwing on of traditional rubber rings, fundamentally cutting off the energy source of the knocking sound.

[0027] As a preferred option, such as Figure 2 As shown, a groove 313 is formed at the top of the upper sealing lip 311, extending downwards to the middle of the upper sealing lip 311. Multiple grooves 313 are provided, evenly spaced circumferentially around the top of the upper sealing lip 311. The grooves 313 provide additional deformation space for the upper sealing lip 311. When there are manufacturing errors in the cup opening height and end face parallelism, the compression amount can be automatically adjusted, thereby achieving automatic error compensation. This method can reduce over-tightening or over-loosening due to dimensional fluctuations, ensuring consistent noise reduction performance in mass-produced products.

[0028] As a preferred option, such as Figure 3 As shown, a receiving groove 21 is provided circumferentially at the top of the side wall of the screw-in part 2, and the annular seal 3 is installed in the receiving groove 21. The receiving groove 21 achieves precise positioning of the annular seal 3. In the radial direction, the annular seal 3 cooperates with the inner wall of the receiving groove 21 to ensure that the center of the annular seal 3 and the center of the screw-in part 2 are coaxial, avoiding local overpressure or leakage caused by eccentricity; in the axial direction, the bottom of the receiving groove 21 provides a clear compression reference for the annular seal 3, thereby ensuring that the compression amount is consistent each time it is screwed in, eliminating torque fluctuations caused by different installation depths; in the circumferential direction, the groove wall restricts the circumferential slippage of the annular seal 3 when the lid rotates, preventing the annular seal 3 from twisting, maintaining the continuous fit between the vertical rib 32 and the inner wall of the cup mouth, and thus ensuring a damping effect throughout the process.

[0029] Preferably, the annular seal 3 is a one-piece molded silicone ring component. The annular seal 3 is integrally molded during the silicone injection process, without increasing the number of parts or altering the original threads and assembly process of the cup lid and body. Modifications to the mold are limited to adding micro-ribs to the cavity; the mold alteration is minimal, and the impact on silicone usage is negligible. Therefore, it does not significantly increase material costs and offers good economic efficiency for mass production.

[0030] In summary, this cup lid sealing ring screw-on noise improvement structure, by optimizing the sealing ring structure design, avoids vibration during the screwing process from the source, thus preventing abnormal noise from the cup lid during screwing on.

[0031] In summary, 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 and improvements 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 structure for improving the noise when a cup lid sealing ring is screwed on, characterized in that: The device includes a cover, a screw-on part, and an annular seal. The screw-on part has threads on its sidewall and is fixedly mounted on the bottom of the cover and coaxial with the cover. The annular seal is sleeved on the top of the screw-on part and abuts against the bottom of the cover. The annular seal includes a sealing ring and vertical ribs. Multiple vertical ribs are provided and are evenly spaced along the outer circumference of the annular seal.

2. The structure for improving the noise reduction when the cup lid sealing ring is engaged, as described in claim 1, is characterized in that: The sealing ring includes an upper sealing lip and a lower sealing lip, which are fixedly connected. The inner diameters of the upper sealing lip and the lower sealing lip are the same, and the outer diameter of the upper sealing lip is larger than that of the lower sealing lip. Multiple vertical ribs are evenly arranged circumferentially along the connection between the outer rings of the upper and lower sealing lips, and the upper and lower ends of the vertical ribs extend to the upper and lower sealing lips, respectively.

3. The cup lid sealing ring screw-on noise improvement structure according to claim 2, characterized in that: The outer side of the vertical rib is at the same height as the upper sealing lip, and the axial length of the vertical rib covers at least half of the height of the sealing ring.

4. The structure for improving the screw-on noise of the cup lid sealing ring according to claim 3, characterized in that: The top of the upper sealing lip is provided with a groove, which extends downward to the middle of the upper sealing lip. Multiple grooves are provided, and the multiple grooves are evenly spaced along the circumference of the top of the upper sealing lip.

5. The structure for improving the screw-on noise of the cup lid sealing ring according to claim 1, characterized in that: The top of the sidewall of the engagement part is provided with a receiving groove along the circumferential direction, and the annular seal is installed in the receiving groove.

6. The structure for improving the screw-on noise of the cup lid sealing ring according to claim 5, characterized in that: The annular seal is a one-piece molded silicone ring-shaped component.

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