A one-handed plastic bottle cap

Abstract

The utility model provides a kind of single-handedly operated plastic bottle cap, including lower cover, upper cover and the connecting portion for making the upper cover overturn relative to lower cover, lower cover inner chamber is equipped with reflux wall, pull tab is equipped on reflux wall, the width of pull tab from the end close to connecting portion to another end first increases then decreases, and the width close to connecting portion end is greater than the width of another end;Upper cover is opened annular groove, the top of annular groove is inclined upward and outward and forms boss with upper cover top;The bottom of annular groove is inclined outward and extends downward and is communicated with upper cover bottom, forms crescent contact surface.The utility model described single-handedly operated plastic bottle cap, optimization upper cover and lower cover opening mode, by setting crescent contact surface for placing thumb in upper cover, user can easily exert force, significantly improve the convenience of single-handedly opening cover.Pull tab shape innovative design cooperates with flow guide nozzle, avoids that liquid flows out or splashes in large quantity, optimizes liquid flow guiding efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of bottle cap technology, and in particular relates to a plastic bottle cap that can be operated with one hand. Background Technology

[0002] Currently, liquid condiment bottles on the market, such as soy sauce containers, typically use a snap-on structure to connect the upper and lower caps. Opening relies on the engagement of the rim of the upper cap with a groove on the lower cap. However, the protruding part of the rim is generally designed to be small, resulting in a limited contact area with the groove. When users attempt to open the cap with their thumb, the narrow point of contact and lack of sufficient friction often require considerable force. This is particularly difficult for users with weak hand strength or those operating in restricted environments (such as with wet hands or wearing gloves).

[0003] Furthermore, these bottle caps are usually designed with a pull tab, but the opening of the pull tab is too large, making it difficult to effectively control the liquid flow when pouring. The excessively large opening also increases the impact force when pouring, causing the liquid to splash and contaminate the surrounding environment or the user's clothing. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model aims to propose a plastic bottle cap that can be operated with one hand. This bottle cap solves the problems of existing bottle caps being difficult to open with one hand and difficult to control the liquid flow when pouring.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0006] A plastic bottle cap that can be operated with one hand includes a lower cap, an upper cap, and a connecting part for flipping the upper cap relative to the lower cap. The lower end of the lower cap is nested on the bottle mouth, the upper end of the lower cap is provided with a positioning ring, and the upper cap is provided with an inner plug for engaging with the positioning ring.

[0007] The inner cavity of the lower cover is provided with a reflux wall, and a pull tab is provided on the reflux wall. The pull tab is connected to a pull ring. The width of the pull tab increases and then decreases from the end near the connection part to the other end, and the width near the connection part is greater than the width at the other end.

[0008] An annular groove is formed on the outer wall of the top cover opposite to the connecting part. The top of the annular groove is upward and outward, forming a boss with the top of the top cover. The bottom of the annular groove is outward and downward, communicating with the bottom of the top cover to form a crescent-shaped contact surface, which is used for contact with fingers.

[0009] Furthermore, the ratio of the arc length of the annular groove to the circumference of the top cover is two-fifths.

[0010] Furthermore, the circumferential outer wall of the positioning ring and the connecting part extends upward and folds outward to form a guide nozzle. The guide nozzle is pointed, and the two ends of the guide nozzle are connected to the positioning ring through a folding part.

[0011] Furthermore, the inner wall of the positioning ring is provided with a first protrusion, and the outer wall of the inner plug is provided with a second protrusion. When the upper cover and the lower cover are fastened together, the second protrusion engages with the first protrusion.

[0012] Furthermore, the reflux wall gradually slopes downwards radially from the outside to the inside, making the center of the reflux wall the lowest point.

[0013] Furthermore, the end of the pull tab near the connecting part is connected to the pull ring via a pull ring reinforcing rib.

[0014] Furthermore, the pull ring is at the same horizontal height as the top of the guide nozzle.

[0015] Furthermore, two elastic arc plates are symmetrically arranged on both sides of the connecting part, and each elastic arc plate is connected to the lower cover and the upper cover at both ends, respectively.

[0016] Furthermore, a sealing plug is provided at the lower end of the lower cover. The sealing plug is located below the reflux wall. A cavity for nesting the bottle mouth of the glass bottle is formed between the outer wall of the sealing plug and the inner wall of the lower cover. Multiple reinforcing ribs of the lower cover are evenly distributed on the top of the cavity.

[0017] Furthermore, the inner wall of the lower cover is provided with three protrusions for fastening the mouth of the glass bottle.

[0018] Compared with existing technologies, the plastic bottle cap that can be operated with one hand described in this utility model has the following advantages:

[0019] This invention relates to a one-handed plastic bottle cap, primarily used in glass bottles containing liquid condiments, especially soy sauce. It optimizes the opening mechanism of the top and bottom caps by creating an annular groove on the top cap and a crescent-shaped contact surface within that groove, providing a stable point of force for the user's thumb. This design fully utilizes ergonomic principles, allowing the user to easily open and close the cap by applying force to the protrusion through the interaction of their thumb and the crescent-shaped contact surface when holding the bottle with one hand.

[0020] Furthermore, this plastic bottle cap features an innovative pull tab design to optimize liquid pouring control. The pull tab's width increases and then decreases from one end near the connector to the other, forming a unique arc-shaped transition structure. The end of the pull tab near the connector is connected to a pull ring. This design allows users to easily lift the pull tab by pulling the ring, providing more stable control over the pouring angle and speed, preventing excessive liquid spillage or splashing, reducing waste and cleaning burden, and optimizing liquid flow efficiency. Attached Figure Description

[0021] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0022] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0023] Figure 2 A top view of the bottle cap opened according to an embodiment of this utility model;

[0024] Figure 3 A bottom view of the bottle cap opened according to an embodiment of this utility model;

[0025] Figure 4 This is a schematic diagram of the bottle cap fastening structure provided in an embodiment of the present utility model;

[0026] Figure 5 A side view of the bottle cap open provided in an embodiment of this utility model;

[0027] Figure 6 A cross-sectional view of the bottle cap provided for an embodiment of this utility model;

[0028] Figure 7 This is a schematic diagram illustrating the fastening process of the upper and lower covers in an embodiment of the present invention.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Lower cover; 11. Positioning ring; 111. Flow guide nozzle; 112. Folding part; 113. Protrusion one; 12. Return wall; 13. Pull tab; 14. Pull ring; 15. Pull ring reinforcing rib; 16. Sealing plug; 17. Lower cover reinforcing rib; 18. Protrusion three; 19. Lower cover outer ring; 2. Upper cover; 21. Inner plug; 211. Protrusion two; 22. Annular groove; 23. Boss; 24. Contact surface; 25. Inner ring; 3. Connecting part; 31. Elastic arc sheet. Detailed Implementation

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0032] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, 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, and do not 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. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0035] like Figures 1 to 7 As shown, a plastic bottle cap that can be operated with one hand includes a lower cap 1, an upper cap 2, and a connecting part 3 for flipping the upper cap 2 relative to the lower cap 1. The lower end of the lower cap 1 is nested on the bottle mouth. The upper end of the lower cap 1 has an outer ring 19 and a positioning ring 11 arranged from the outside to the inside. The upper cap 2 has an inner ring 25 on its circumferential inner wall and an inner plug 21 inside the upper cap 2. When the upper cap 2 and the lower cap 1 are fastened together, the inner side of the inner ring 25 is fastened to the outer side of the lower cap outer ring 19, and the outer side of the inner plug 21 is fastened to the inner side of the positioning ring 11.

[0036] The inner cavity of the lower cover 1 is provided with a reflux wall 12, the outer circumferential wall of the reflux wall 12 is connected to the inner wall of the positioning ring 11; the reflux wall 12 is provided with a pull tab 13, the pull tab 13 is connected to a pull ring 14; the width of the pull tab 13 increases and then decreases from the end near the connecting part 3 to the other end, and the width near the connecting part 3 is greater than the width at the other end.

[0037] An annular groove 22 is formed on the outer wall of the upper cover 2 opposite to the connecting part 3. The top of the annular groove 22 is inclined upward and outward to form a boss 23 with the top of the upper cover 2. The bottom of the annular groove 22 is inclined outward and extends downward to communicate with the bottom of the upper cover 2, forming a crescent-shaped contact surface 24. The contact surface 24 is used for contact with fingers.

[0038] In a preferred embodiment of this invention, the outer wall of the top cover 2 is concave inward from the bottom and communicates upward with the bottom of the annular groove 22, forming a crescent-shaped contact surface 24. This provides a more ergonomic force application area when in contact with a finger. Its tilt angle and shape guide the finger to naturally conform to the outer wall of the bottle cap, optimizing the direction of force application and reducing the possibility of finger slippage. Simultaneously, the outer wall of the top cover 2 increases in layers from the top of the annular groove 22, forming a protrusion 23 at the top of the top cover 2. The inclined surface of the protrusion 23 increases the contact area between the finger and the bottle cap, while providing greater friction, facilitating finger application and improving the ease of opening the cap. The protrusion 23 makes it easier to open the top cover.

[0039] In a preferred embodiment of this invention, the ratio of the arc length of the annular groove 22 to the circumference of the upper cover 2 is two-fifths. In this embodiment, only the upper cover 2 has a wider-angled recess, while the lower cover has no recess, making the cap appear flatter after the cover is added.

[0040] In a preferred embodiment of the present invention, the outer circumferential wall of the positioning ring 11 near the connecting part 3 is folded outward, and the outer circumferential wall opposite to the connecting part 3 extends upward and folds outward to form a guide nozzle 111. The guide nozzle 111 is pointed, and the two ends of the guide nozzle 111 are connected to the positioning ring 11 by a folding part 112.

[0041] Specifically, the pointed design of the guide nozzle 111 can concentrate the liquid outflow path, control the outflow direction and flow rate of the liquid, prevent the liquid from splashing during pouring, and ensure that the liquid flows out in a stable and precise manner. The transition connection between the pointed structure of the guide nozzle 111 and the folding part 112 can effectively reduce the splashing of liquid between the guide nozzle and the positioning ring, and improve the smoothness of the liquid flow.

[0042] In a preferred embodiment of this utility model, the inner wall of the positioning ring 11 is provided with a first protrusion 113, and the outer wall of the inner plug 21 is provided with a second protrusion 211. When the upper cover 2 and the lower cover 1 are fastened together, the second protrusion 211 engages with the first protrusion 113. While ensuring that the upper cover 2 and the lower cover 1 are sealed, the protrusions of the first protrusion 113 and the second protrusion 211 can be reduced, so that the fastening strength between the positioning ring 11 and the inner plug 21 can achieve one-handed opening without reducing the sealing effect of the bottle cap.

[0043] In a preferred embodiment of this invention, the reflux wall 12 gradually slopes downwards radially from the outside to the inside, making the center of the reflux wall 12 the lowest point. The inclined design of the reflux wall 12 guides the liquid to flow naturally towards the lowest point in the center, ensuring that the liquid flows along a predetermined path during the reflux process and preventing the liquid from stagnating or splashing inside the bottle cap.

[0044] In a preferred embodiment of this utility model, the pull tab 13 is connected to the pull ring 14 near the connecting part 3 by the pull ring reinforcing rib 15, and the pull ring 14 and the top of the guide nozzle 111 are at the same horizontal height.

[0045] Specifically, the pull tab 13 is centered on the reflux wall 12, and the pull tab 13 is radially symmetrically arranged along the reflux wall 12. From one end near the connecting part 3 to the other, the width of the pull tab 13 gradually increases to its maximum value, then gradually decreases, forming a structure that is wide in the middle and narrow at both ends. The width at the end near the connecting part 3 is greater than the width at the end away from the connecting part 3. The end of the pull tab 13 near the connecting part 3 has a rounded head for easy pulling; the end with the maximum width in the middle is approximately triangular; the other end is elongated, and this elongated end follows an arc from the lowest point to the highest point of the reflux wall 12, allowing the liquid to flow into the bottle on its own when it flows back to the reflux wall 12 through the guide nozzle 111.

[0046] When the pull tab 13 is pulled to pour the liquid, the slender end forms a concave sharp angle, which helps to control the liquid flow rate. Especially when the bottle is tilted at a large angle, it helps to prevent the liquid from flowing out suddenly and makes the flow rate more moderate. At the same time, in conjunction with the guide nozzle 111, the poured liquid is in a linear shape.

[0047] The inner side of the pull ring 14 is smooth, which helps to increase the contact area of ​​the fingers when pulling the pull ring 14, and has a certain effect of saving effort and comfort.

[0048] In a preferred embodiment of this utility model, the connecting part 3 is integrally formed with the upper cover 2 and the lower cover 1. Two elastic arc plates 31 are symmetrically arranged on both sides of the connecting part 3, and each elastic arc plate 31 is connected to the lower cover 1 and the upper cover 2 at both ends. Specifically, two elastic arc plates 31 are symmetrically arranged at the connection between the lower cover 1 and the upper cover 2. While connecting the lower cover 1 and the upper cover 2, when there is a displacement in the closing direction of the lower cover 1 and the upper cover 2, the connection part 3 can be effectively corrected, the pressure on the connecting part 3 can be reduced, and the service life can be increased.

[0049] In a preferred embodiment of the present invention, a sealing plug 16 is provided at the lower end of the lower cover 1. The sealing plug 16 is located below the reflux wall 12. A cavity for nesting the bottle mouth of a glass bottle is formed between the outer wall of the sealing plug 16 and the inner wall of the lower cover 1. A plurality of lower cover reinforcing ribs 17 are evenly distributed on the top of the cavity. The inner wall of the lower cover 1 is provided with protrusions 18 for fastening the bottle mouth of the glass bottle.

[0050] Specifically, the inner wall of the lower cap 1 contacts the outer side of the glass bottle opening, and the inner side of the glass bottle opening contacts the outer wall of the sealing plug 16. The sealing plug 16 is located inside the glass bottle and is in contact with the liquid inside. The sealing connection between the cap and the glass bottle is achieved through the sealing plug 16 and the protrusion 18, ensuring a tight connection between the cap and the bottle opening and guaranteeing the liquid's airtightness. The reinforcing ribs 17 of the lower cap are evenly distributed along the top circumference of the cavity, enhancing the structural stability of the cap, reducing deformation caused by internal and external forces, and extending the service life of the cap.

[0051] How a plastic bottle cap that can be operated with one hand works:

[0052] When opening the cover, press the contact surface 24 on the outside of the cover 2 with your thumb, and use the internal pressure space at the annular groove 22 to easily apply force to the protrusion 23 to open the cover 2. It is convenient to operate with one hand.

[0053] When pouring liquid, pull the tab 13 using the pull ring 14, and the liquid flows out from the guide nozzle 111. Due to the shape design of the pull tab 13 and the cooperation between the return wall 12 and the guide nozzle 111, the liquid flows out in a linear pattern, the flow rate is controllable, and large amounts of liquid or splashing are avoided. When the liquid flows back from the guide nozzle 111 to the return wall 12, it will flow into the bottle along its curvature, preventing liquid overflow.

[0054] 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 plastic bottle cap operable with one hand, comprising a lower cap, an upper cap, and a connecting portion for flipping the upper cap relative to the lower cap, wherein the lower end of the lower cap is nested on the bottle mouth, and the upper end is provided with a positioning ring; the upper cap is provided with an inner plug for engaging with the positioning ring, characterized in that: The inner cavity of the lower cover is provided with a reflux wall, and a pull tab is provided on the reflux wall. The pull tab is connected to a pull ring at the end near the connecting part. The width of the pull tab increases and then decreases from the end near the connecting part to the other end, and the width at the end near the connecting part is greater than the width at the other end. An annular groove is formed on the outer wall of the top cover opposite to the connecting part. The top of the annular groove is upward and outward, forming a boss with the top of the top cover. The bottom of the annular groove is outward and downward, communicating with the bottom of the top cover to form a crescent-shaped contact surface, which is used for contact with fingers.

2. The plastic bottle cap that can be operated with one hand according to claim 1, characterized in that: The ratio of the arc length of the annular groove to the circumference of the top cover is two-fifths.

3. The plastic bottle cap that can be operated with one hand according to claim 1, characterized in that: The circumferential outer wall of the positioning ring and the connecting part extends upward and folds outward to form a guide nozzle. The guide nozzle is pointed, and the two ends of the guide nozzle are connected to the positioning ring through a folding part.

4. The plastic bottle cap that can be operated with one hand according to claim 1, characterized in that: The inner wall of the positioning ring is provided with a protrusion one, and the outer wall of the inner plug is provided with a protrusion two. When the upper cover and the lower cover are fastened together, the protrusion two engages with the protrusion one.

5. The plastic bottle cap that can be operated with one hand according to claim 1, characterized in that: The reflux wall gradually slopes downwards radially from the outside to the inside, making the center of the reflux wall the lowest point.

6. The plastic bottle cap that can be operated with one hand according to claim 1, characterized in that: The pull tab near the connecting part is connected to the pull ring via a pull ring reinforcing rib.

7. The plastic bottle cap that can be operated with one hand according to claim 1, characterized in that: The pull ring is at the same horizontal level as the top of the guide nozzle.

8. The plastic bottle cap that can be operated with one hand according to claim 1, characterized in that: Two elastic arc plates are symmetrically arranged on both sides of the connecting part, and each elastic arc plate is connected to the lower cover and the upper cover at both ends respectively.

9. The plastic bottle cap that can be operated with one hand according to claim 1, characterized in that: The lower end of the lower cover is provided with a sealing plug, which is located below the reflux wall. The outer wall of the sealing plug and the inner wall of the lower cover form a cavity for nesting the bottle mouth of the glass bottle. Multiple reinforcing ribs of the lower cover are evenly distributed on the top of the cavity.

10. The plastic bottle cap that can be operated with one hand according to claim 9, characterized in that: The inner wall of the lower cover is provided with three protrusions for fastening the mouth of the glass bottle.

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