Anti-theft plastic cover

Abstract

The utility model discloses an anti-theft plastic cover which comprises an inner cover and an outer cover capable of being connected to the inner cover in a sleeved mode, the lower end of the outer cover is provided with an inwards-concave cavity, a connecting cylinder with an opening in the lower end is arranged in the cavity, and a buckle structure capable of limiting the inner cover to be separated from the outer cover is arranged between the inner wall of the connecting cylinder and the outer side wall of the inner cover. The inner wall of the inner cap is provided with a threaded structure which can be in threaded connection with the bottle opening, the lower end of the inner cap is connected with an anti-theft ring, a connecting block which can be pulled apart when the inner cap on the bottle opening is screwed off is arranged between the anti-theft ring and the inner cap, the outer wall of the inner cap is further provided with a connecting cylinder which can be supported after the inner cap is inserted into the connecting cylinder, and the upper end of the connecting cylinder is connected to the inner top of the concave cavity. When the end of the outer cover is extruded by external force, the connecting cylinder transmits stress to the supporting ring, the supporting ring transmits the stress to the bottle body through the inner cover, and therefore the stress is dispersed to the bottle body, the outer cover is not prone to being crushed, the stress resistance of the outer cover is improved, and the performance of the plastic cover is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of bottle accessories and plastic covers, in particular to an anti-theft plastic cover. Background Art

[0002] On the market, some medicine bottles' plastic caps are processed separately into two components: the inner cap and the outer cap. The outer cap can ensure the appearance of the cap, and the inner cap can achieve its leak-proof and sealing functions. At the same time, separate processing into the inner cap and the outer cap can also ensure the perfect appearance during injection molding and reduce the occurrence of defects such as deformation and shrinkage.

[0003] When the outer cover is processed into some special shapes, such as mushroom shape, flower bud shape, animal head shape, etc., in order to reduce production costs and reduce the use of materials, a certain gap is often left between the top of the inner cover and the outer cover. This leads to a problem. When the top of the outer cover is squeezed by external force, the side wall of the outer cover corresponding to the gap is easily squeezed by the external force, thereby affecting its performance.

[0004] The utility model is made based on the above situation. Utility Model Content

[0005] The utility model overcomes the shortcomings of the prior art and provides an anti-theft plastic cover which can prevent theft and the top of the outer cover is not easily damaged by external force.

[0006] The utility model is realized through the following technical solutions:

[0007] A theft-proof plastic cover comprises an inner cover and an outer cover which can be sleeved on the inner cover, wherein the lower end of the outer cover is provided with an inwardly concave cavity, a connecting tube with an open lower end is provided in the concave cavity, a buckle structure which can limit the inner cover from being separated from the outer cover is provided between the inner wall of the connecting tube and the outer wall of the inner cover, a threaded structure which can be threadedly connected to a bottle mouth is provided on the inner wall of the inner cover, an anti-theft ring is connected to the lower end of the inner cover, a connecting block which can be torn off when the inner cover on the bottle mouth is unscrewed is provided between the anti-theft ring and the inner cover, and a connecting block which can be torn off when the inner cover on the bottle mouth is unscrewed is also provided on the outer wall of the inner cover so as to be supported on the connecting tube after the inner cover is inserted into the connecting tube, and the upper end of the connecting tube is connected to the inner top of the concave cavity.

[0008] In the anti-theft plastic cover as described above, the buckle structure comprises a first clamping block arranged on the outer wall of the inner cover and a first buckle arranged on the inner wall of the connecting tube and capable of buckling with the first clamping block.

[0009] In the anti-theft plastic cover as described above, the first clamping block includes a first clamping ring circumferentially arranged on the outer wall of the inner cover, the first buckle includes a second clamping ring circumferentially arranged on the inner wall of the connecting tube, and a first guiding slope is provided on the inner side of the lower end of the second clamping ring.

[0010] In the anti-theft plastic cover as described above, an anti-rotation structure capable of limiting the inner cover from rotating relative to the outer cover is provided between the inner wall of the connecting tube and the outer wall of the inner cover.

[0011] In the anti-theft plastic cover as described above, the anti-rotation structure comprises a plurality of slots circumferentially arranged on the outer side wall of the inner cover and inserting blocks circumferentially arranged on the inner wall of the connecting tube and capable of being inserted into the slots.

[0012] In the anti-theft plastic cover as described above, a second guiding inclined surface is provided on the slot wall of the slot.

[0013] In the anti-theft plastic cover as described above, a plurality of protrusions are circumferentially arranged on the outer wall of the inner cover, two adjacent protrusions and the outer wall of the inner cover form a slot, and the second guiding slope is arranged on both side walls of the protrusion.

[0014] In the anti-theft plastic cover as described above, the inner wall of the anti-theft ring is provided with a second clamping block which can prevent the anti-theft ring from escaping from the bottle mouth when the anti-theft ring is installed at the bottle mouth, and the lower end of the second clamping block is provided with a third guiding inclined surface.

[0015] In the anti-theft plastic cover as described above, reinforcing ribs are provided between the inner wall of the cavity and the outer wall of the connecting tube.

[0016] The anti-theft plastic cover as described above, wherein the outer cover is mushroom-shaped. Compared with the prior art, the utility model has the following advantages:

[0017] 1. The outer wall of the inner cover is also provided with a connecting cylinder which can support the inner cover after being inserted into the connecting cylinder. The upper end of the connecting cylinder is connected to the inner top of the concave cavity. When the end of the outer cover is squeezed by external force, the connecting cylinder transfers the stress to the supporting ring, and the supporting ring transfers the stress to the bottle body through the inner cover, so that the stress is dispersed to the bottle body, and the outer cover is not easily crushed, thereby improving the stress resistance of the outer cover and strengthening the performance of the plastic cover.

[0018] 2. An anti-theft ring is connected to the lower end of the inner cover. A connecting block is provided between the anti-theft ring and the inner cover, which can be torn off when the inner cover on the bottle mouth is unscrewed. When the plastic cover is opened, the connecting block is pulled off, and the anti-theft ring is separated from the inner cover. At this time, the traces of the bottle cap being opened can be clearly shown. The anti-theft ring can effectively prevent the product from being opened or tampered with during transportation and storage, ensure the quality and safety of the product, and prevent the product from being illegally manipulated or adulterated.

[0019] 3. The first clamping block includes a first clamping ring circumferentially arranged on the outer wall of the inner cover, and the first buckle includes a second clamping ring circumferentially arranged on the inner wall of the connecting tube. Compared with the buckling of separate buckles, the buckling of the second clamping ring and the first clamping ring can improve the stress resistance of the structure, thereby making the buckle structure less likely to be damaged.

[0020] 4. The inner wall of the connecting tube and the outer wall of the inner cover are provided with an anti-rotation structure which can limit the inner cover from rotating relative to the outer cover, thereby preventing the inner cover and the outer cover from slipping after assembly.

[0021] 5. A second guiding inclined surface is provided on the groove wall of the slot. When the outer cover is installed and the insert block is misaligned with the slot, the insert block slides along the second guiding inclined surface, so that the outer cover rotates and calibrates itself, thereby facilitating the installation of the outer cover.

[0022] 6. A reinforcing rib is provided between the inner wall of the concave cavity and the outer wall of the connecting tube, thereby enhancing the stress resistance of the outer cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings, wherein:

[0024] Figure 1 It is a structural schematic diagram of the utility model;

[0025] Figure 2 It is a cross-sectional view of the utility model;

[0026] Figure 3 It is an exploded schematic diagram of the utility model;

[0027] Figure 4 It is a side view of the inner cover in the utility model;

[0028] Figure 5 It is a cross-sectional view of the outer cover in the utility model;

[0029] Figure 6 This utility model Figure 4 Enlarged view of part A in the middle. DETAILED DESCRIPTION

[0030] The utility model is further described below in conjunction with the accompanying drawings:

[0031] like Figures 1 to 6 The illustrated anti-theft plastic cover comprises an inner cover 1 and an outer cover 2 which can be sleeved on the inner cover 1, the lower end of the outer cover 2 is provided with an inwardly concave cavity 21, a connecting tube 22 with a lower end opening is provided in the concave cavity 21, a buckle structure which can limit the inner cover 1 from being separated from the outer cover 2 is provided between the inner wall of the connecting tube 22 and the outer wall of the inner cover 1, a threaded structure 111 which can be threadedly connected to the bottle mouth is provided on the inner wall of the inner cover 1, the threaded structure 111 is a screw tooth protruding inwardly, an anti-theft ring 3 is connected to the lower end of the inner cover 1, a connecting block 4 which can be torn off when the inner cover 1 on the bottle mouth is unscrewed is provided between the anti-theft ring 3 and the inner cover 1, a supporting ring 5 which can be supported on the lower end surface of the connecting tube 22 after the inner cover 1 is inserted into the connecting tube 22 is also provided on the outer wall of the inner cover 1, and the upper end of the connecting tube 22 is connected to the inner top of the concave cavity 21.

[0032] After the anti-theft plastic cover of this case is installed on the bottle mouth, when the end of the outer cover 2 is squeezed by external force, the connecting tube 22 can transfer the stress to the support ring 5, and the support ring 5 is then transferred to the bottle body through the inner cover 1, so that the stress is dispersed on the bottle body, and then the outer cover 2 is not easily crushed, the stress resistance of the outer cover 2 is improved, and the performance of the plastic cover is enhanced. Among them, the support ring 5 and the inner cover 1 are integrally injection molded. The connecting tube 22 and the outer cover 2 are integrally injection molded.

[0033] The lower end of the inner cover 1 is connected with an anti-theft ring 3, and a connecting block 4 which can be torn off when the inner cover 1 on the bottle mouth is unscrewed is provided between the anti-theft ring 3 and the inner cover 1. When the plastic cover is opened, the connecting block 4 is pulled off, and the anti-theft ring 3 is separated from the inner cover 1. At this time, the trace that the bottle cap has been opened can be clearly shown. The anti-theft ring 3 can effectively prevent the product from being opened or tampered with during transportation and storage, ensure the quality and safety of the product, and prevent the product from being illegally manipulated or adulterated.

[0034] The inner wall of the anti-theft ring 3 is provided with a second clamping block 31 which can prevent the anti-theft ring 3 from slipping out of the bottle mouth when it is installed on the bottle mouth, and the lower end of the second clamping block 31 is provided with a third guiding inclined surface 311. When the anti-theft plastic cover is installed on the bottle body for the first time, the clamping block on the bottle mouth abuts against the third guiding inclined surface 311, and the anti-theft ring 3 is stretched open by the clamping block along the third guiding inclined surface 311, and is buckled at the bottle mouth after passing over the clamping block, thereby preventing the anti-theft ring 3 from slipping out.

[0035] A specific angle range of 30° to 60° is set between the third guide bevel 311 and the moving direction of the guide ring 3. The selection of the angle within this range is based on a comprehensive consideration of the stability and smoothness that the guide bevel can provide during the movement of the guide ring. In this entire range, 45° is considered the optimal solution. This is because when the angle is 45°, the guide bevel can not only ensure the smooth movement of the anti-theft ring 3, but also minimize the friction and resistance during the movement, making the operation of the entire system more efficient and stable.

[0036] At the same time, the angle range between the upper surface of the second block 31 and the disengagement direction is set to 70° to 90°. Such a design is mainly to ensure that the second block 31 can be firmly maintained in place under normal working conditions to prevent it from accidentally disengaging. In particular, when the angle is close to 90°, the upper surface of the second block 31 is almost perpendicular to the disengagement direction, forming a strong stop angle. This stop angle can not only effectively limit the disengagement of the second block 31, but also increase the structural strength and stability of the system to a certain extent. By designing the angle between the third guide slope 311 and the upper surface of the second block 31, the mobility of the anti-theft ring 3 is optimized, and the stop ability of the second block 31 is enhanced, providing a strong guarantee for the stable operation of the entire system.

[0037] In one embodiment, the buckle structure includes a first clamping block 12 disposed on the outer wall of the inner cover 1 and a first buckle 222 disposed on the inner wall of the connecting tube 22 and capable of buckling with the first clamping block 12. The first buckle 222 cooperates with the first clamping block 12 to limit the inner cover 1 from being separated from the outer cover 2.

[0038] In one embodiment, the first clamping block 12 includes a first clamping ring circumferentially arranged on the outer wall of the inner cover 1, the first clamping buckle 222 includes a second clamping ring circumferentially arranged on the inner wall of the connecting tube 22, and the lower end inner side of the second clamping ring is provided with a first guiding inclined surface 2221. Compared with the buckling of separate blocks, the buckling of the second clamping ring with the first clamping ring can improve the stress resistance of the structure, so that the buckling structure is not easily damaged. The first clamping ring is integrally injection molded with the inner cover 1, and the second clamping ring is integrally injection molded with the outer cover 1. The first guiding inclined surface 2221 facilitates the buckling of the second clamping ring.

[0039] In one embodiment, an anti-rotation structure is provided between the inner wall of the connecting tube 22 and the outer wall of the inner cover 1, which can limit the rotation of the inner cover 1 relative to the outer cover 2, thereby ensuring that the inner cover 1 and the outer cover 2 can be firmly held together after assembly, thereby preventing slipping or loose rotation during use.

[0040] In one embodiment, the anti-rotation structure includes a plurality of slots 61 circumferentially arranged on the outer side wall of the inner cover 1 and an insert block 62 circumferentially arranged on the inner wall of the connecting tube 22 and capable of being inserted into the slots 61. A second guiding inclined surface 611 is provided on the slot wall of the slot 61. When the insert block 62 is misaligned with the slot 61 during the installation of the outer cover 2, the insert block 62 slides along the second guiding inclined surface 611, so that the outer cover 2 rotates and self-calibrates, thereby facilitating the installation of the outer cover 2. At the same time, due to the presence of the second guiding inclined surface 611, even if misalignment occurs, it is not easy to cause damage to the outer cover 2 or the inner cover 1, thereby ensuring the service life and stability of the product.

[0041] Specifically, a plurality of protrusions 610 are circumferentially arranged on the outer wall of the inner cover 1, two adjacent protrusions 610 and the outer wall of the inner cover 1 form a slot 61, and the second guide slope 611 is arranged on the two side walls of the protrusion 610. The protrusions 610 are evenly distributed on the outer wall of the inner cover 1, the protrusions 610 are integrally injection molded with the inner cover 1, and the inserts 62 are integrally injection molded with the outer cover 2, so as to have extremely high structural strength and durability. Integral injection molding not only simplifies the manufacturing process, but also reduces production costs, and also ensures the stability of product quality.

[0042] In one embodiment, reinforcing ribs 7 are provided between the inner wall of the cavity 21 and the outer wall of the connecting tube 22. The number of the reinforcing ribs 7 is 8, which are evenly distributed circumferentially on the outer wall of the connecting tube 22, thereby forming a stable supporting structure. They not only enhance the connection strength between the cavity 21 and the connecting tube 22, but also enable the entire outer cover 2 to more evenly disperse and resist the external stress when subjected to the external stress.

[0043] In one embodiment, the outer cover 2 is mushroom-shaped, which is not only beautiful, but also gives people a kind and warm feeling. Of course, the outer cover 2 can also be in the shape of a flower bud, an animal head, etc., so as to have different visual effects.

Claims

1. An anti-theft plastic cover, characterized in that: The invention comprises an inner cover (1) and an outer cover (2) which can be sleeved on the inner cover (1), wherein the lower end of the outer cover (2) is provided with an inwardly concave cavity (21), a connecting tube (22) with an open lower end is provided in the concave cavity (21), a buckle structure which can limit the inner cover (1) from being separated from the outer cover (2) is provided between the inner wall of the connecting tube (22) and the outer wall of the inner cover (1), a thread structure (111) which can be threadedly connected with a bottle mouth is provided on the inner wall of the inner cover (1), an anti-theft ring (3) is connected to the lower end of the inner cover (1), a connecting block (4) which can be torn off when the inner cover (1) on the bottle mouth is twisted off is provided between the anti-theft ring (3) and the inner cover (1), and a supporting ring (5) which can be supported on the lower end surface of the connecting tube (22) after the inner cover (1) is inserted into the connecting tube (22) is also provided on the outer wall of the inner cover (1), and the upper end of the connecting tube (22) is connected to the inner top of the concave cavity (21).

2. The anti-theft plastic cover according to claim 1, characterized in that: The buckle structure comprises a first clamping block (12) arranged on the outer wall of the inner cover (1) and a first buckle (222) arranged on the inner wall of the connecting tube (22) and capable of buckling with the first clamping block (12).

3. The anti-theft plastic cover according to claim 2, characterized in that: The first clamping block (12) comprises a first clamping ring circumferentially arranged on the outer wall of the inner cover (1), the first buckle (222) comprises a second clamping ring circumferentially arranged on the inner wall of the connecting tube (22), and a first guiding inclined surface (2221) is provided on the inner side of the lower end of the second clamping ring.

4. The anti-theft plastic cover according to claim 1 or 3, characterized in that: An anti-rotation structure capable of limiting the inner cover (1) from rotating relative to the outer cover (2) is provided between the inner wall of the connecting cylinder (22) and the outer wall of the inner cover (1).

5. The anti-theft plastic cover according to claim 4, characterized in that: The anti-rotation structure comprises a plurality of slots (61) circumferentially arranged on the outer wall of the inner cover (1) and an insert block (62) circumferentially arranged on the inner wall of the connecting tube (22) and capable of being inserted into the slots (61).

6. The anti-theft plastic cover according to claim 5, characterized in that: A second guiding inclined surface (611) is provided on the slot wall of the slot (61).

7. The anti-theft plastic cover according to claim 6, characterized in that: A plurality of protrusions (610) are circumferentially arranged on the outer wall of the inner cover (1); two adjacent protrusions (610) and the outer wall of the inner cover (1) form a slot (61); and the second guiding inclined surfaces (611) are arranged on the two side walls of the protrusions (610).

8. The anti-theft plastic cover according to claim 1, characterized in that: The inner wall of the anti-theft ring (3) is provided with a second clamping block (31) which can prevent the anti-theft ring (3) from escaping from the bottle mouth when the anti-theft ring (3) is installed on the bottle mouth, and the lower end of the second clamping block (31) is provided with a third guiding inclined surface (311).

9. The anti-theft plastic cover according to claim 1, characterized in that: A reinforcing rib (7) is provided between the inner wall of the concave cavity (21) and the outer wall of the connecting tube (22).

10. The anti-theft plastic cover according to claim 1, characterized in that: The outer cover (2) has a mushroom-like appearance.

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