Anti-loosening easy-opening structure

Abstract

The utility model discloses an anti-loosening structure easy to open, and belongs to the technical field of packaging covers. The anti-loosening cover comprises a cover body provided with first blocking teeth, and the first blocking teeth are provided with first anti-loosening faces; the bottle opening is provided with second blocking teeth, the second blocking teeth are provided with second anti-loosening faces, and unscrewing guide inclined faces are obliquely arranged between the second anti-loosening faces and the outer side face of the bottle opening. The first anti-loosening face and the second anti-loosening face are matched to effectively avoid loosening of the cover body, when torsion in the unscrewing direction is applied, one side edge of the first anti-loosening face can move along the surface of the unscrewing guide inclined face, then the first anti-loosening face is attached to the second anti-loosening face, and the unscrewing purpose is achieved after blocking is broken through. And the maximum value of the twisting force in the unscrewing direction is mainly influenced by the length of the second anti-loosening surface in the radius direction of the bottle opening, so that the locking state of the cover body can be effectively avoided, and the effect of easy unscrewing is achieved. On the premise that the anti-loosening requirement is met, the requirement that packaging is easy to unscrew and reuse can be met. And the use of winding adhesive tapes on the cover body part can be reduced in an e-commerce environment.

Description

Technical Field

[0001] This utility model relates to the field of packaging cap technology, and in particular to an anti-loosening and easy-to-open structure. Background Technology

[0002] With the development of e-commerce, its transportation methods require that the screw caps of packaging bottles have a certain anti-loosening ability. At present, there are some packaging bottles and caps with anti-loosening structures on the market. The principle is to use two toothed structures to block each other to achieve the anti-loosening effect. However, it is not easy to turn back and open after the cap is screwed on. Although such packaging can achieve anti-loosening, a large torque is required to separate the cap. This is inconvenient for packaging that needs to be reused (such as metering pumps and spray guns) or screw cap packaging that needs to be used continuously. Utility Model Content

[0003] The purpose of this utility model is to provide an anti-loosening and easy-opening structure to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0004] To solve the above-mentioned technical problems, a non-loosening and easy-opening structure is provided, comprising: a cap body with an internal thread and a first stop tooth on the inner side, the first stop tooth having a first non-loosening surface; a bottle body with a bottle mouth, the outer side of the bottle mouth having an external thread adapted to the internal thread, the outer side of the bottle mouth having a second stop tooth, the second stop tooth having a second non-loosening surface; when the cap body rotates relative to the bottle mouth in a first clockwise direction, the first non-loosening surface abuts against the second non-loosening surface; after the first stop tooth overcomes the abutment of the second stop tooth, the cap body can detach from the bottle mouth; and an opening guide slope is inclinedly provided between the second non-loosening surface and the outer side of the bottle mouth.

[0005] This technical solution has at least the following beneficial effects: the cooperation between the first and second anti-loosening surfaces effectively prevents the cap from loosening. When a torque is applied in the first clockwise direction, one side of the first anti-loosening surface of the first stop tooth can move along the surface of the opening guide slope, then fit against the second anti-loosening surface, and break through the obstruction to achieve the purpose of unscrewing. Furthermore, the maximum value of the torque in this unscrewing direction is mainly affected by the length of the second anti-loosening surface in the radius direction of the bottle opening, effectively preventing the cap from locking and achieving an easy-to-unscrew effect. While satisfying the anti-loosening requirement, it also meets the need for easy-to-unscrew reusable packaging. In an e-commerce environment, it can reduce the use of tape wrapped around the cap.

[0006] As a further improvement to the above technical solution, the first anti-loosening surface is parallel to the radial direction of the cap, the second anti-loosening surface is parallel to the radial direction of the bottle opening, and the connection position between the screw-on guide ramp and the second anti-loosening surface corresponds to the position of the first anti-loosening surface near the center of the cap on the radial direction of the bottle opening. This ensures that the reverse screw-on torque of the matching bottle opening and cap is controlled within a reasonable range under normal tolerance conditions, thus solving the problem of easy cap loosening, allowing users to easily screw on the cap to access the product or reuse the packaging, and meeting normal batch process requirements with high reliability.

[0007] As a further improvement to the above technical solution, the angle between the screw-on guide ramp and the second anti-loosening surface is between 59 and 69 degrees, giving the screw-on guide ramp good guiding performance.

[0008] As a further improvement to the above technical solution, the angle between the screw-on guide ramp and the second anti-loosening surface is 64 degrees. This ensures that the screw-on guide ramp has good guiding performance.

[0009] As a further improvement to the above technical solution, the second anti-loosening surface and the screw-opening guide slope form a continuously curved guide arc surface, and the angle between the first anti-loosening surface and the radial direction of the cover is between 39 and 49 degrees. By utilizing the contact between the inclined first anti-loosening surface and the guide arc surface, when a torque is applied in the screw-opening direction, one side of the inclined first anti-loosening surface moves along the surface of the guide arc surface and overcomes the obstruction to achieve the purpose of screwing open. Furthermore, the arc curve structure of the guide arc surface makes it easier to screw open, effectively preventing the cover from locking and achieving an easy-to-screw-open effect.

[0010] As a further improvement to the above technical solution, the angle between the first anti-loosening surface and the radial direction of the cover is 44 degrees. While ensuring a good anti-loosening effect, it can be unscrewed within a reasonable torque range, achieving an easy-to-unscrew effect and high reliability.

[0011] As a further improvement to the above technical solution, the radius of the outgoing arc surface is between 1.50mm and 1.60mm, or the value of the radius of the outgoing arc surface divided by the outer radius of the bottle opening is between 0.02 and 0.03. This keeps the ease of loosening within a reasonable range, balancing the anti-loosening effect and the ease of unscrewing.

[0012] As a further improvement to the above technical solution, the first stop tooth has a guide slope on the side away from the first anti-loosening surface, and the second stop tooth has a guide arc surface on the side away from the second anti-loosening surface. When the cap is installed on the bottle mouth, the mutual contact and guiding effect between the guide slope and the guide arc surface allows the first stop tooth to easily overcome the obstruction of the second stop tooth and tighten the cap.

[0013] As a further improvement to the above technical solution, the radius of the inlet arc surface is between 3.26mm and 3.46mm, or the value of the radius of the inlet arc surface divided by the outer radius of the bottle opening is between 0.05 and 0.06.

[0014] As a further improvement to the above technical solution, the contact length between the first stop tooth and the second stop tooth in the radial direction of the bottle opening is between 0.175mm and 0.575mm, or the contact length divided by the first gap between the outer side of the bottle opening and the inner side of the cap is between 0.09 and 0.41mm. Attached Figure Description

[0015] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0016] Figure 1 This is a schematic diagram of the external structure of Embodiment 1 of the present utility model;

[0017] Figure 2 for Figure 1 A cross-sectional schematic diagram of AA in the middle;

[0018] Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle;

[0019] Figure 4 This is a schematic diagram of the external structure of Embodiment 2 of this utility model;

[0020] Figure 5 for Figure 4 Cross-sectional schematic diagram of BB;

[0021] Figure 6 for Figure 5 Enlarged structural diagram at point B.

[0022] 100. Cap; 110. First stop tooth; 111. First anti-loosening surface; 112. Guide slope; 200. Bottle mouth; 201. Bottle body; 210. Second stop tooth; 211. Second anti-loosening surface; 212. Guide arc surface; 220. Unscrew guide slope; 230. Outlet arc surface. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0024] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0025] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0026] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0027] Example 1:

[0028] Reference Figure 1-3 The anti-loosening and easy-opening structure includes a bottle body 201 and a cap 100. The bottle body 201 can be a container for holding items, or it can be the housing of equipment such as a metering pump or spray gun. The bottle body 200 has a bottle mouth 200, and the outer circumference of the bottle mouth 200 has external threads. One end of the cap 100 has a cylindrical hole, and the inner wall of the cylindrical hole has internal threads. The external threads and internal threads are adapted to connect, so that the cap 100 is threadedly connected to the bottle mouth 200, and the cap 100 can cover the bottle mouth 200. When the cap 100 rotates relative to the bottle mouth 200 in a first clockwise direction, the cap 100 can loosen relative to the bottle mouth 200, thereby realizing the cap 100 detaching from the bottle mouth 200. The first clockwise direction can be either clockwise or counterclockwise. The second clockwise direction is opposite to the first clockwise direction.

[0029] The inner wall of the cylindrical hole is uniformly provided with a plurality of first stop teeth 110, which protrude from the inner wall of the cylindrical hole. The first stop teeth 110 are provided with a first anti-loosening surface 111 on the first clockwise side, and the radial direction of the cover 100 is arranged parallel to the first anti-loosening surface 111.

[0030] Two second stop teeth 210 are evenly arranged around the outer side of the bottle mouth 200, protruding from the outer side of the bottle mouth 200. The second stop teeth 210 have a second anti-loosening surface 211 on the side in the second clockwise direction, and the radial direction of the bottle mouth 200 is parallel to the second anti-loosening surface 211.

[0031] Assuming the bottle opening 200 is relatively stationary while the cap 100 rotates in the first clockwise direction, the first anti-loosening surface 111 can abut against the second anti-loosening surface 211, thereby preventing the cap 100 from loosening relative to the bottle opening 200, effectively achieving the effect of preventing the cap 100 from loosening.

[0032] An opening guide slope 220 is formed between the outer wall of the bottle mouth 200 and the second anti-loosening surface. The acute angle α formed between the opening guide slope 220 and the second anti-loosening surface 211 is between 59 degrees and 69 degrees. Preferably, the acute angle α formed between the opening guide slope 220 and the second anti-loosening surface 211 is 64 degrees.

[0033] When the cap 100 needs to be unscrewed, the first anti-loosening surface 111 of the first stop tooth 110 can abut against the unscrewing guide slope 220 on the side near the bottle mouth 200. When the cap 100 is rotated, the abutting part will move along the surface of the unscrewing guide slope 220 until it fits against the second anti-loosening surface 211, and the cap 100 is unscrewed by breaking through the second stop tooth 210.

[0034] Due to the guiding effect of the screw-opening guide slope 220, the maximum value of the torque in the screw-opening direction is mainly affected by the length of the second anti-loosening surface 211 in the radial direction of the bottle mouth 200. By reasonably designing this length, even if the obstruction length of the first stop tooth 110 and the second stop tooth 210 in the radial direction of the bottle mouth 200 is greater than the length of the second anti-loosening surface 211 in the radial direction of the bottle mouth 200, the cap can be effectively prevented from locking and the effect of easy screwing can be achieved.

[0035] It should be noted that when unscrewing the cover 100, pressure needs to be applied to the outer periphery of the cover 100 to ensure that the friction between the hand and the outer side of the cover 100 is sufficient to rotate the cover 100. This pressure generally causes the cover 100 to deform to a certain extent, making the interlocking depth between the first stop tooth 110 and the second stop tooth 210 greater and tighter, increasing the resistance to the cover 100 and making the cover 100 difficult to unscrew.

[0036] After the screw-on guide ramp 220 is set, the first stop tooth 110 of the cap 100 will abut against the screw-on guide ramp 220. By using the screw-on guide ramp 220 with a guiding function to reduce the obstruction length of the first stop tooth 110 and the second stop tooth 210 in the radial direction of the bottle mouth 200, the cap 100 is easier to screw on. Therefore, the cap 100 can achieve the effect of easy screwing on while effectively preventing the cap 100 from coming loose.

[0037] In this embodiment, the connection position between the screw-on guide slope 220 and the second anti-loosening surface 211 corresponds to the position of the side of the first anti-loosening surface 111 near the cap 100 in the radial direction of the bottle opening 200. When the cap 100 is loosened to the point where the first stop tooth 110 and the second stop tooth 210 abut, the first anti-loosening surface 111 abuts against the second anti-loosening surface 211, and the side of the first anti-loosening surface 111 near the cap 100 abuts precisely at the connection position between the screw-on guide slope 220 and the second anti-loosening surface 211. This ensures that the reverse screw-on torque of the matching bottle opening 200 and cap 100 under normal tolerance conditions is controlled within a reasonable range, thus solving the problem of easy loosening of the cap 100, allowing users to easily screw on the cap 100 to take out the product or reuse the packaging, and meeting normal batch process requirements with high reliability.

[0038] The first stop tooth 110 has an inlet inclined surface 112 on one side in the second clockwise direction, that is, the position of the inlet inclined surface 112 and the position of the first anti-loosening surface 111 are respectively located on both sides of the first stop tooth 110.

[0039] An inlet arc surface 212 is provided on one side of the second stop tooth 210 in the first clockwise direction, that is, the position of the inlet arc surface 212 and the position of the second anti-loosening surface 211 are respectively located on both sides of the second stop tooth 210. In this embodiment, the inlet arc surface 212 and the second anti-loosening surface 211 are connected and arranged on the same side.

[0040] The ratio between the radius of the imported arc surface 212 and the outer radius of the bottle mouth 200 is between 0.05 and 0.06.

[0041] Specifically, when the outer diameter of the bottle opening 200 is 31.8 mm or close to 31.8 mm, the radius of the guide arc surface 212 is between 3.26 mm and 3.46 mm, preferably 3.36 mm. When the cap 100 is installed on the bottle opening 200, the mutual contact and guiding action between the guide slope 112 and the guide arc surface 212 allows the first stop tooth 110 to easily overcome the obstruction of the second stop tooth 210 and tighten the cap 100.

[0042] When the cap 100 is loosened, the length of the contact portion between the first stop tooth 110 and the second stop tooth 210 in the radial direction of the bottle opening 200 is the contact length m. It can be understood that in this embodiment, the contact length is the length in the radial direction of the bottle opening 200 of the portion of the second anti-loosening surface 211 that can be pressed against by the first anti-loosening surface 111. The gap between the outer side of the bottle opening 200 and the inner side of the cap is the first gap, and the ratio between the contact length and the first gap is between 0.09 and 0.41. Specifically, when the first gap is 2.67 mm or close to 2.67 mm, the contact length is between 0.175 and 0.575 mm, preferably 0.275 mm. This ensures that the ease of loosening the cap 100 is within a reasonable range, balancing the anti-loosening effect and the ease of unscrewing the cap 100.

[0043] This embodiment satisfies the requirements of preventing loosening while also ensuring easy unscrewing and reuse of the packaging. In an e-commerce environment, it can reduce the use of tape wrapped around 100% of the lid.

[0044] Example 2:

[0045] The difference between Embodiment 2 and Embodiment 1 lies in the specific structures of the first and second stop teeth. (Refer to...) Figure 4-6 In this embodiment, both the second anti-loosening surface 211 and the unscrewing guide slope 220 are arc surfaces. The curvature at the connection between the second anti-loosening surface 211 and the unscrewing guide slope 220 is continuous, thereby forming a leading arc surface 230 between the second anti-loosening surface 211 and the unscrewing guide slope 220. The leading arc surface 230 protrudes in a direction away from the cover 100. The acute angle β between the radial direction of the cover 100 and the first anti-loosening surface 111 is between 39 degrees and 49 degrees. Preferably, the acute angle between the radial direction of the cover 100 and the first anti-loosening surface 111 is 44 degrees.

[0046] When the cover 100 needs to be unscrewed, the first anti-loosening surface 111 of the first stop tooth 110 can abut against the guide arc surface 230 and move along the surface of the guide arc surface 230 until it breaks through the second stop tooth 210 to unscrew the cover 100. This effectively avoids the cover from locking up and achieves the effect of easy unscrewing.

[0047] By using the inclined first anti-loosening surface 111 to abut against the guide arc surface 230, when a torque is applied in the direction of unscrewing, one side of the inclined first anti-loosening surface 111 moves along the surface of the guide arc surface 230 and breaks through the obstruction to achieve the purpose of unscrewing. Moreover, the arc curve structure of the guide arc surface 230 is easier to unscrew, which can effectively avoid the lock-up state of the cover and achieve the effect of easy unscrewing.

[0048] The ratio between the radius of the arc surface 230 and the outer radius of the bottle mouth 200 is between 0.02 and 0.03.

[0049] Specifically, when the outer diameter of the bottle mouth 200 is 31.8 mm or close to 31.8 mm, the radius of the outgoing arc surface 230 is between 1.50 mm and 1.60 mm. Preferably, the radius of the outgoing arc surface 230 is 1.56 mm.

[0050] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A non-loosening and easy-opening structure, characterized in that, include: The cover (100) has an internal thread and a first stop tooth (110) on its inner side, and the first stop tooth (110) has a first anti-loosening surface (111); The bottle body (201) has a bottle mouth (200) and an external thread adapted to the internal thread on the outside of the bottle mouth (200). A second stop tooth (210) is provided on the outside of the bottle mouth (200). The second stop tooth (210) has a second anti-loosening surface (211). When the cap (100) rotates relative to the bottle mouth (200) in a first clockwise direction, the first anti-loosening surface (111) abuts against the second anti-loosening surface (211). After the first stop tooth (110) overcomes the abutment of the second stop tooth (210), the cap (100) can be separated from the bottle mouth (200). An opening guide slope (220) is inclinedly provided between the second anti-loosening surface (211) and the outer side of the bottle mouth (200).

2. The anti-loosening and easy-opening structure according to claim 1, characterized in that: The first anti-loosening surface (111) is parallel to the radial direction of the cap (100), the second anti-loosening surface (211) is parallel to the radial direction of the bottle mouth (200), and the connection position between the screw-on guide slope (220) and the second anti-loosening surface (211) corresponds to the position of the first anti-loosening surface (111) near the center of the cap (100) on the radial direction of the bottle mouth (200).

3. The anti-loosening and easy-opening structure according to claim 2, characterized in that: The angle (α) between the rotating guide slope (220) and the second anti-loosening surface (211) is between 59 degrees and 69 degrees.

4. The anti-loosening and easy-opening structure according to claim 3, characterized in that: The angle (α) between the rotating guide slope (220) and the second anti-loosening surface (211) is 64 degrees.

5. The anti-loosening and easy-opening structure according to claim 1, characterized in that: The second anti-loosening surface (211) and the screw-open guide slope (220) form a continuous curved leading arc surface (230), and the angle (β) between the first anti-loosening surface (111) and the radial direction of the cover (100) is between 39 degrees and 49 degrees.

6. The anti-loosening and easy-opening structure according to claim 5, characterized in that: The angle (β) between the first anti-loosening surface (111) and the radial direction of the cover (100) is 44 degrees.

7. The anti-loosening and easy-opening structure according to claim 6, characterized in that: The radius of the outgoing arc surface (230) is between 1.50mm and 1.60mm, or the radius of the outgoing arc surface (230) divided by the outer radius of the bottle mouth (200) is between 0.02 and 0.

03.

8. The anti-loosening and easy-opening structure according to claim 1, characterized in that: The first stop tooth (110) has an inlet inclined surface (112) on the side away from the first anti-loosening surface (111), and the second stop tooth (210) has an inlet arc surface (212) on the side away from the second anti-loosening surface (211).

9. The anti-loosening and easy-opening structure according to claim 8, characterized in that: The radius of the inlet arc surface (212) is between 3.26mm and 3.46mm, or the radius of the inlet arc surface (212) divided by the outer radius of the bottle mouth (200) is between 0.05 and 0.

06.

10. The anti-loosening and easy-opening structure according to claim 1, characterized in that: The contact length (m) between the first stop tooth (110) and the second stop tooth (210) in the radial direction of the bottle mouth (200) is between 0.175mm and 0.575mm, or the contact length divided by the value of the first gap between the outer side of the bottle mouth (200) and the inner side of the cap (100) is between 0.09 and 0.41.

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