Easily-opened bottle cap structure

Abstract

The utility model relates to the technical field of bottle caps, in particular to an easy-to-open bottle cap structure which comprises a bottle cap body, the bottle cap body comprises an inner cap and an outer cap, the inner cap is an annular tinplate sheet and is provided with an inner thread recessed inwards, the inner cap is wrapped in the outer cap, and the outer cap comprises an outer cap top face and an outer cap side face. A protruding block protruding downwards is arranged on the inner wall of the top face of the outer cap body, a sealing ring is arranged below the protruding block, and grooves are formed in the two opposite ends of the outer cap body respectively. By increasing friction force and providing a clear force application point, a user can easily open the bottle cap without spending too much strength or carrying out complex operation.

Description

Technical Field

[0001] The utility model relates to the technical field of bottle caps, in particular to an easy-to-open bottle cap structure. Background Art

[0002] In daily life, container bottles are widely used, covering almost every field such as food, beverages, cosmetics, medicine, chemical reagents, etc., and the market demand is huge. For the storage of most items, container bottles are indispensable, and the importance of bottle caps as the sealing part of container bottles is self-evident. Metal caps are sometimes difficult to open, especially for some people with less strength, who may need to use tools, so some easy-to-open bottle caps have appeared on the market.

[0003] For example, an easy-to-open tinplate bottle cap (publication number: CN211568771U, publication date: 2020-09-25), which includes a bottle cap body, an isolation pad is provided on the inner surface of the bottle cap body, a ventilation hole is provided at an eccentric position of the bottle cap body, a plug is inserted into the ventilation hole, the plug and the ventilation hole are interference fit, and an opening mechanism for pulling out the plug is also provided on the bottle cap body. The bottle cap has a ventilation hole at an eccentric position of the bottle cap body. When opening the bottle cap, you only need to pull out the plug. Under the action of atmospheric pressure, external gas enters from the ventilation hole, and the isolation pad on the inside will shrink inward to reduce the pressure difference between the inside and outside of the tank body, thereby reducing the pressure difference between the inside and outside of the bottle body, making it easier to open the bottle cap.

[0004] However, the bottle cap is provided with a hole plug. Although the hole plug and the ventilation hole are interference fit, the hole plug may become loose or damaged after long-term use or improper handling, resulting in reduced sealing. If the hole plug is accidentally pulled out during transportation or storage, the bottle cap may lose its sealing, causing the liquid in the bottle to leak.

[0005] For example, an easy-open bottle cap structure (publication number: CN107954080B, publication date: 2023-09-29), includes an inner cap and an outer cap, the inner cap is provided with a first thread, the outer cap is provided with a second thread, the inner cap and the outer cap are connected together by the first thread and the second thread, the outer cap is provided with a plurality of inclined holes, the plurality of inclined holes are spirally distributed along the outer cap, the opening of each inclined hole is opened on the inner wall surface of the outer cap, the bottom of each inclined hole is close to the outer wall surface of the outer cap but does not penetrate the outer wall surface, each inclined hole is installed with a spring and a push point that resists the spring, so that the push point can be retractably received in the inclined hole; a locking cover is provided on the top of the inner cap, and a locking point is provided on the locking cover to connect with the outer cap; when the locking point is in a locked state, the spring is compressed to store elastic potential energy, and when the locking point is in an unlocked state, the spring is extended to push the inner cap to spirally rotate out of the outer cap through the push point, and the cap is automatically opened.

[0006] The bottle cap is designed with an inner cover and an outer cover. When the cap needs to be opened, you only need to gently pinch the labor-saving clip on the locking cover to unlock the locking point. The inner cover can be automatically rotated out under the thrust of the spiral of each spring, achieving the effect of labor-saving opening. The structure is simple and the operation is convenient, which provides convenience for the elderly or children to open the bottle cap smoothly. However, the structure of the bottle cap is complex. The complex structure not only increases the manufacturing cost, but also may reduce the reliability and durability of the product. Due to the presence of components such as oblique holes and springs, the cleaning and maintenance of the inner cover and the outer cover become relatively difficult. Dirt and foreign matter may enter the oblique holes and affect the normal operation of the spring. Utility Model Content

[0007] In view of the technical defects existing in the background technology, the utility model proposes an easy-open bottle cap structure, which solves the above technical problems and meets the actual needs. The specific technical solution is as follows:

[0008] An easy-open bottle cap structure comprises a bottle cap body, wherein the bottle cap body comprises an inner cap and an outer cap, wherein the inner cap is a ring-shaped tinplate sheet and is provided with an inner thread recessed inwardly, and the inner cap is wrapped in the outer cap;

[0009] The outer cover comprises an outer cover top surface and an outer cover side surface. The inner wall of the outer cover top surface is provided with a downwardly protruding block, a sealing ring is provided under the block, and grooves are respectively provided at opposite ends of the outer cover, and an uneven contact surface is provided in the groove.

[0010] As a further technical solution of the utility model, the inner wall of the outer cover side is provided with an external thread protruding outward and fitting with the internal thread of the inner cover, the inner wall of the outer cover side is fitting with the outer wall of the inner cover, and the top of the inner cover is fitting with the inner wall of the top surface of the outer cover.

[0011] As a further technical solution of the utility model, a protective layer is provided at the bottom end of the outer cover side surface, the protective layer is provided below the inner cover and is attached to the bottom end of the inner cover, and the protective layer and the outer cover side surface are integrated.

[0012] As a further technical solution of the utility model, the top surface of the outer cover and the side surface of the outer cover are integrated, and the outer cover is fixedly connected to the inner cover.

[0013] As a further technical solution of the utility model, an anti-slip texture is provided on the outer wall of the outer cover.

[0014] As a further technical solution of the utility model, the protrusion and the sealing ring are circular structures, and the edge of the sealing ring extends upward to wrap around the edge of the protrusion.

[0015] As a further technical solution of the utility model, the groove passes through the top end of the outer cover, and a resistance block is formed between the bottom end of the groove and the bottom end of the side surface of the outer cover.

[0016] As a further technical solution of the utility model, the groove is provided with three groove side surfaces and a groove bottom surface, the three groove side surfaces are arranged above the bottom surface, two of the groove side surfaces are respectively arranged at opposite ends of the groove, and the other groove side surface is arranged at one end of the groove close to the inner cover, and the groove side surface close to the inner cover is a contact surface.

[0017] The beneficial effects of the utility model are:

[0018] The outer cover of the utility model is provided with a groove, and the groove provides a clear force point for the user, so that the user can apply force to open the bottle cap more accurately, and increase the contact area between the bottle cap and the human hand, thereby increasing the friction force between the bottle cap and the human hand. At the same time, an uneven contact surface is provided in the groove, which increases the friction coefficient between the finger and the bottle cap, and further increases the friction force. The utility model increases the friction force and provides a clear force point, and the user does not need to expend too much effort or perform complicated operations to easily open the bottle cap.

[0019] The utility model is composed of an inner cover and an outer cover, and the overall structure is simple. The inner cover is an annular tinplate sheet with good strength and formability, which can ensure that the spiral pattern between the bottle cap and the bottle mouth is tightly combined, thereby improving the sealing performance. The outer cover wraps the inner cover, and the inner wall of the top end of the outer cover is provided with a convex block and a sealing ring. The sealing ring can improve the sealing performance between the bottle mouth and the outer cover, and further improve the sealing performance of the bottle cap. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The figure is an external structural diagram of an easy-open bottle cap structure.

[0021] Figure 2 The figure is a diagram of the internal structure of an easy-open bottle cap structure.

[0022] Figure 3 The figure is a cross-sectional structural diagram of an easy-open bottle cap structure.

[0023] Figure 4 The present invention is a structural diagram of an easy-open bottle cap structure along the cross section of the groove center axis.

[0024] Among them: inner cover 1, internal thread 11, outer cover 2, outer cover top surface 21, outer cover side surface 22, protrusion 23, external thread 24, protective layer 25, anti-slip texture 26, resistance block 27, groove 3, contact surface 31, sealing ring 4, bottle mouth 5. DETAILED DESCRIPTION

[0025] The following is combined with Figures 1 to 4The implementation methods of the present invention are described with relevant embodiments, but the implementation methods of the present invention are not limited to the following embodiments, and the present invention involves relevant necessary components in this technical field, which should be regarded as the known technology in this technical field and can be known and mastered by the technicians in this technical field.

[0026] The utility model provides an easy-to-open bottle cap structure, such as Figure 2 As shown, the bottle cap body includes an inner cap 1 and an outer cap 2. The inner cap 1 is an annular metal sheet and is provided with an inner thread 11 that is recessed inward. The inner cap 1 is wrapped in the outer cap 2. The outer cap 2 includes an outer cap top surface 21 and an outer cap side surface 22. The inner wall of the outer cap top surface 21 is provided with a convex block 23 that protrudes downward, and a sealing ring 4 is provided below the convex block 23. Figure 1 As shown, grooves 3 are respectively formed at two opposite ends of the outer cover 2 , and an uneven contact surface 31 is formed in the groove 3 .

[0027] The outer cover 2 of the utility model is provided with a groove 3, and the groove 3 provides a clear force point for the user, so that the user can apply force more accurately to open the bottle cap, and increase the contact area between the bottle cap and the human hand, thereby increasing the friction force. At the same time, an uneven contact surface 31 is provided in the groove 3, which increases the friction coefficient between the finger and the bottle cap and further increases the friction force. The utility model increases the friction force and provides a clear force point, and the user does not need to spend too much effort or perform complicated operations to easily open the bottle cap.

[0028] The utility model is composed of an inner cover 1 and an outer cover 2, and the overall structure is simple. The inner cover 1 is an annular tinplate sheet with good strength and formability, which can ensure that the spiral pattern between the bottle cap and the bottle mouth 5 is tightly combined, thereby improving the sealing performance. The outer cover 2 wraps the inner cover 1, and the inner wall of the top end of the outer cover 2 is provided with a convex block 23 and a sealing ring 4. The sealing ring 4 can improve the sealing performance between the bottle mouth 5 and the outer cover 2, and further improve the sealing performance of the bottle cap.

[0029] More specifically, bottle caps are used in a wide range of industries, including food, beverage, chemical, pharmaceutical and other industries. Metal bottle caps occupy an important position in the packaging industry, especially in areas that require high strength, corrosion resistance and aesthetics. Metal bottle caps are usually made of metals such as aluminum and tinplate (tin-plated iron), which have high strength and durability and can protect the product in the bottle from external physical damage. The metal bottle cap is tightly combined with the bottle mouth 5 by threading or pressing, providing excellent sealing performance to prevent liquid leakage or spillage.

[0030] Furthermore, tinplate has good ductility, which allows the bottle cap to form a tight thread or gland structure during the manufacturing process, thereby increasing the tightness of the seal, and the tinplate bottle cap has high strength, which makes the bottle cap less likely to deform when subjected to external pressure or impact, thereby ensuring the durability of the seal.

[0031] However, the bottle cap made of tinplate is designed to be tight, which makes it more laborious to open, and the bottle cap made of tinplate will form an internal thread 11 that matches the thread of the bottle mouth 5, and the surface of the internal thread 11 is smooth, which reduces the friction resistance during unscrewing and tightening. This smoothness may also make it difficult to generate enough friction to rotate the bottle cap when opening manually, especially without the assistance of appropriate tools. If the surface of the tinplate cap is provided with lines to increase the friction between it and the finger, the lines may affect the sealing performance of the tinplate cap. Especially in the part that cooperates with the bottle mouth 5, if the lines are too complicated or uneven, it may cause a loose seal.

[0032] Aluminum bottle caps are lighter than other materials such as plastic or iron bottle caps, which makes them more convenient to transport and carry. In addition, aluminum bottle caps also have good durability and can withstand the test of long-term use and repeated opening. However, compared with iron caps, aluminum bottle caps have poor stability at high temperatures and are easy to deform, resulting in reduced sealing. In addition, the aluminum film of aluminum bottle caps is thin and easy to deform, especially in high temperature and humid environments, which may lead to poor sealing.

[0033] like Figure 3 and Figure 4 As shown, the present application combines tinplate with aluminum bottle cap. Tinplate is used as inner cap 1, which can ensure that the spiral pattern between the bottle cap and the bottle mouth 5 is tightly combined, while the aluminum bottle cap as outer cap 2 has good durability and is easier to open the groove 3 than the iron cap. The groove 3 can provide a clear force point for the finger and increase the friction between the finger and the bottle cap, thereby ensuring the sealing performance of the bottle cap while solving the problem that the tinplate cap has a smooth surface and is difficult to open.

[0034] If both the inner and outer covers 2 are made of tinplate, tinplate is heavier than aluminum, and the overall weight of the entire bottle cap is heavier. At the same time, it is impossible to make a thicker outer cover 2 using tinplate, and it is impossible to open a groove 3 on the outer cover 2 to provide a force point for the finger.

[0035] From a production perspective, the present application can be produced in the following manner: first, a thinner annular tinplate sheet and an aluminum bottle cap shape are obtained, and the inner cover 1 can be fixed in the outer cover 2 by stamping, welding, gluing, etc., and then the internal thread 11 of the inner cover 1 is stamped out, and finally a groove 3 is opened on the outer cover 2.

[0036] As one of the preferred embodiments of the utility model, the inner wall of the outer cover side 22 is provided with an outer thread 24 that protrudes outward and fits with the inner thread 11 of the inner cover 1, the inner wall of the outer cover side 22 fits with the outer wall of the inner cover 1, and the top of the inner cover 1 fits with the inner wall of the outer cover top surface 21. The thinner inner cover 1 is made of tinplate, and the inner thread 11 will be formed during stamping, while the aluminum outer cover 2 is thicker, and after stamping, the aluminum outer cover 2 will only form threads on the inner wall, and no threads are formed on the outside, which is convenient for setting patterns and opening grooves 3 on the aluminum outer cover 2.

[0037] At the same time, if Figure 3 As shown, the inner wall of the outer cover side 22 is provided with an outer thread 24 that protrudes outward and fits with the inner thread 11 of the inner cover 1, the inner wall of the outer cover side 22 fits with the outer wall of the inner cover 1, and the top of the inner cover 1 fits with the inner wall of the outer cover top surface 21, which can ensure the degree of fixation and fit between the inner cover 1 and the outer cover 2, prevent the inner cover 1 and the outer cover 2 from not fitting together, and produce small gaps, which affects the sealing degree of the bottle cap.

[0038] As one of the preferred embodiments of the utility model, a protective layer 25 is provided at the bottom of the outer cover side 22. The protective layer 25 is provided below the inner cover 1 and is attached to the bottom of the inner cover 1. The protective layer 25 is integrated with the outer cover side 22. After the inner cover 1 and the outer cover 2 are stamped together, the inner cover 1 is embedded in the outer cover 2, and the outer cover 2 portion below the inner cover 1 maintains its original thickness, so that the outer cover 2 forms a protective layer 25 below the inner cover 1. The protective layer 25 can wrap the bottom of the inner cover 1 to prevent the thinner inner cover 1 from being too sharp and cutting fingers.

[0039] As one of the preferred embodiments of the utility model, the outer cover top surface 21 and the outer cover side surface 22 are integrated, which helps to enhance the integrity and structural strength of the outer cover 2. As mentioned above, the outer cover 2 is made of an aluminum bottle cap. The outer cover 2 is fixedly connected to the inner cover 1. This fixed connection needs to ensure the tightness and sealing between the outer cover 2 and the inner cover 1 to prevent loosening or falling off during use. The fixed connection method includes stamping, welding, gluing, etc.

[0040] As one of the preferred embodiments of the utility model, an anti-skid texture 26 is provided on the outer wall of the outer cover 2. The anti-skid texture 26 increases the friction between the hand and the bottle cap by increasing the roughness of the surface of the outer cover 2. When the groove 3 is not used, the user can also increase the friction with the help of the anti-skid texture 26 of the outer cover 2, which helps to provide sufficient grip when opening or closing the bottle cap to avoid slipping, making the operation easier and more stable. The anti-skid texture 26 can not only provide a stable grip, but also reduce the risk of accidental falling or breakage caused by hand slipping to a certain extent. This is of great significance for ensuring the safety and integrity of the product during use.

[0041] As one of the preferred embodiments of the present invention, Figure 3 As shown, the protrusion 23 and the sealing ring 4 are circular structures, and the edge of the sealing ring 4 extends upward to wrap the edge of the protrusion 23. The extended sealing ring 4 tightly wraps the edge of the protrusion 23 to form an effective sealing surface to prevent medium leakage. When the bottle cap is applied to the bottle mouth 5, the sealing ring 4 is located inside the bottle mouth 5. When the bottle cap is tightened, the sealing ring 4 forms a close contact with the inside of the bottle mouth 5, thereby preventing liquid or gas from leaking from the bottle mouth 5. This design can effectively maintain the integrity and safety of the product in the bottle.

[0042] The bottle cap is usually connected to the bottle mouth 5 by threads or other means. When the bottle cap is tightened, the sealing ring 4 will be compressed and fit tightly inside the bottle mouth 5 to form an effective seal. When the bottle cap needs to be opened, it can be easily removed by simply rotating the bottle cap in the opposite direction, and the sealing ring 4 will return to its original state, ready for next use.

[0043] As one of the preferred embodiments of the present invention, Figure 1 As shown, the groove 3 passes through the top of the outer cover 2, and a resistance block 27 is formed between the bottom of the groove 3 and the bottom of the outer cover side 22. If the groove 3 passes through the top and bottom of the entire outer cover 2, then when a finger is placed on the groove 3 and the bottle cap is twisted open with force, the finger is likely to slide down from the groove 3 without the resistance block 27, which is not conducive to opening the bottle cap.

[0044] The groove 3 is provided with three groove side surfaces and a groove bottom surface. The three groove side surfaces are arranged above the bottom surface, wherein two groove side surfaces are arranged at opposite ends of the groove 3 respectively, and the other groove side surface is arranged at one end of the groove 3 close to the inner cover 1. The groove side surface close to the inner cover 1 is the contact surface 31.

[0045] When a finger is placed in the groove 3, both the side and bottom of the groove provide support for the finger, which limits the sliding of the finger on the bottle cap, increases friction, and provides a force point, so that the finger can "grasp" the bottle cap more firmly when rotating the bottle cap. At the same time, the side of the groove close to the inner cover 1 is a contact surface 31, which often contacts the fingertips and has a large contact area. This surface is set to an uneven contact surface 31, which increases the friction between the finger and the bottle cap, making it easier to open the bottle cap.

[0046] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An easy-open bottle cap structure, comprising a bottle cap body, characterized in that: The bottle cap body comprises an inner cap (1) and an outer cap (2); the inner cap (1) is a ring-shaped tinplate sheet and is provided with an inwardly recessed internal thread (11); the inner cap (1) is wrapped inside the outer cap (2); The outer cover (2) comprises an outer cover top surface (21) and an outer cover side surface (22); a downwardly protruding block (23) is provided on the inner wall of the outer cover top surface (21); a sealing ring (4) is provided below the block (23); grooves (3) are respectively provided at opposite ends of the outer cover (2); and an uneven contact surface (31) is provided in the groove (3).

2. The easy-open bottle cap structure according to claim 1, characterized in that: The inner wall of the outer cover side (22) is provided with an outer thread (24) protruding outward and fitting with the inner thread (11) of the inner cover (1); the inner wall of the outer cover side (22) fits with the outer wall of the inner cover (1); and the top of the inner cover (1) fits with the inner wall of the outer cover top surface (21).

3. The easy-open bottle cap structure according to claim 1, characterized in that: A protective layer (25) is provided at the bottom end of the outer cover side surface (22); the protective layer (25) is provided below the inner cover (1) and is in contact with the bottom end of the inner cover (1); the protective layer (25) and the outer cover side surface (22) are integrally arranged.

4. The easy-open bottle cap structure according to claim 1, characterized in that: The outer cover top surface (21) and the outer cover side surface (22) are integrally arranged, and the outer cover (2) and the inner cover (1) are fixedly connected.

5. The easy-open bottle cap structure according to claim 1, characterized in that: An anti-slip texture (26) is provided on the outer wall of the outer cover (2).

6. The easy-open bottle cap structure according to claim 1, characterized in that: The protrusion (23) and the sealing ring (4) are circular structures, and the edge of the sealing ring (4) extends upward to wrap around the edge of the protrusion (23).

7. The easy-open bottle cap structure according to claim 1, characterized in that: The groove (3) passes through the top end of the outer cover (2), and a resistance block (27) is formed between the bottom end of the groove (3) and the bottom end of the side surface (22) of the outer cover.

8. The easy-open bottle cap structure according to claim 1, characterized in that: The groove (3) is provided with three groove side surfaces and a groove bottom surface, the three groove side surfaces are provided above the bottom surface, two of the groove side surfaces are provided at opposite ends of the groove (3), and the other groove side surface is provided at one end of the groove (3) close to the inner cover (1), and the groove side surface close to the inner cover (1) is a contact surface (31).

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