Lightweight anti-theft cover for oyster sauce jar
By designing a local anti-theft structure on the oyster sauce can lid, including pre-cut ribs and anti-theft plates, the problem of high material consumption of the anti-theft ring is solved, achieving lightweighting and cost reduction, while ensuring visual verification of anti-theft performance and sealing status.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SI CHUAN WANG SHI HONG SE SU JIAO JI TUAN YOU XIAN GONG SI
- Filing Date
- 2025-08-25
- Publication Date
- 2026-06-23
AI Technical Summary
While the existing anti-theft rings on oyster sauce cans are effective in preventing theft, they consume a lot of materials, resulting in high production costs.
It adopts a partial anti-theft structure, including pre-broken ribs and repeatedly bendable anti-theft plates, combined with observation ports, to replace the traditional integral anti-theft ring. This ensures that the pre-broken ribs break when the device is first opened, and the sealing status can be verified through the observation ports, thus reducing the amount of plastic used.
It achieves a lightweight design, reduces production costs, maintains anti-theft performance, and allows for intuitive verification of the sealing status through an observation port, reducing material consumption.
Smart Images
Figure CN224393460U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of food packaging technology, specifically relating to a lightweight anti-theft lid for oyster sauce cans. Background Technology
[0002] Oyster sauce cans are special containers for holding oyster sauce. The can opening has threads, a locking ring, and a positioning ring from top to bottom. The lid of an existing oyster sauce can generally consists of a lid body and an anti-theft ring. The lid body is screwed onto the can opening by threads, and the anti-theft ring is located under the locking ring and connected to the bottom edge of the lid body. When the lid is unscrewed, the connection between the anti-theft ring and the lid body will break, thus allowing you to determine from the appearance whether the oyster sauce can has been opened.
[0003] However, while existing anti-theft rings do serve their purpose, they also consume a lot of materials. The huge consumption can be directly felt on the production line. Therefore, it is an urgent problem to improve the anti-theft cover by making it lightweight while still providing anti-theft functionality. Utility Model Content
[0004] To address the problems mentioned in the background art, this utility model provides a lightweight anti-theft cap for oyster sauce cans, which solves the problem that while the anti-theft rings on existing can caps play a role in preventing theft, they also consume a lot of materials, and the huge consumption can be directly felt on the production line.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A lightweight anti-theft lid for oyster sauce containers includes:
[0007] The lid has an internal thread on its inner side wall that matches the thread on the outer side wall of the can opening.
[0008] At least one anti-theft structure; an anti-theft structure includes a pre-broken rib, an observation port, and a repeatedly bendable anti-theft plate, the first end of the anti-theft plate being connected to the bottom edge of the lid, the second end of the anti-theft plate being inclined and engaging with the bottom surface of the locking ring at the mouth of the can, one end of the pre-broken rib being fixedly connected to the inner wall of the lid, and the other end being fixedly connected to the second end of the anti-theft plate, the observation port being provided on the side wall of the lid, the observation port being used to observe whether the pre-broken rib is in a broken state.
[0009] Compared with the prior art, the beneficial effects of this utility model are:
[0010] This application adopts a lightweight design, replacing the traditional integral anti-theft ring with a partial anti-theft structure, which reduces the amount of plastic used and significantly lowers production costs. The design of the pre-broken rib and the anti-theft plate ensures that the pre-broken rib will break upon first opening. The sealing status of the product can be directly verified through the observation port. The anti-theft performance is equivalent to that of the traditional ring structure. The setting of the observation port can also further reduce the amount of plastic used, solving the problem that the existing anti-theft ring of the can lid consumes a lot of material. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the specific structure of this application;
[0012] Figure 2 This is a front view of this application;
[0013] The diagram is marked as follows:
[0014] 1-Lid; 2-Sealing ring; 3-Leak-proof ring; 4-Pre-cut rib; 5-Anti-theft plate; 6-Trapezoidal blind hole; 7-Observation port; 8-Anti-slip texture; 9-Thread on the outer wall of the can opening; 10-Locking ring. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0016] Example 1
[0017] A lightweight anti-theft lid for oyster sauce containers, such as Figure 1 , Figure 2 As shown, it includes:
[0018] Cover 1; The inner wall of cover 1 is provided with an internal thread that matches the thread 9 on the outer wall of the can opening;
[0019] Two anti-theft structures are symmetrically arranged along the axis of the lid 1. One anti-theft structure includes a pre-broken rib 4, an observation port 7, and a repeatedly bendable anti-theft plate 5. The first end of the anti-theft plate 5 is connected to the bottom edge of the lid 1, and the second end of the anti-theft plate 5 is inclined and engaged with the bottom surface of the locking ring 10 at the mouth of the can. One end of the pre-broken rib 4 is fixedly connected to the inner side wall of the lid 1, and the other end is fixedly connected to the second end of the anti-theft plate 5. The observation port 7 is located on the side wall of the lid 1 and is used to observe whether the pre-broken rib 4 is in a broken state.
[0020] In this embodiment, the application adopts a lightweight design, replacing the traditional integral anti-theft ring with a partial anti-theft structure, reducing the amount of plastic used and significantly reducing production costs. Furthermore, the cooperative design of the pre-broken rib 4 and the anti-theft piece 5 ensures that the pre-broken rib 4 will inevitably break upon first opening. The sealing status of the product can be directly verified through the observation port 7. The anti-theft performance is equivalent to that of the traditional ring structure, and the setting of the observation port 7 can further reduce the amount of plastic used, solving the problem that the existing anti-theft ring of the can lid consumes a lot of material.
[0021] Example 2
[0022] The difference between this embodiment and Embodiment 1 is that, as Figure 1 , Figure 2 As shown, the anti-theft structure also includes a trapezoidal blind hole 6, which is set on the outer wall of the cover 1. The large diameter end of the trapezoidal blind hole 6 faces the mouth of the can. The second end of the anti-theft plate 5 is provided with a protrusion. After bending the anti-theft plate 5 to the preset position, the protrusion can undergo elastic deformation under the action of external force, pass through the small diameter end of the trapezoidal blind hole 6, and spring back to reset after entering the large diameter end to form a snap-fit.
[0023] In this embodiment, to prevent the anti-theft plate 5 from being sharp and to avoid it from breaking and falling off after being repeatedly bent to a preset number of times, causing plastic pollution and recycling waste, this application provides a protrusion and a trapezoidal blind hole 6. The protrusion is arrow-shaped, that is, two inclined elastic ribs are provided on both sides of the protrusion body. When the protrusion is inserted into the trapezoidal blind hole 6, the ribs deform and fit tightly against the protrusion body. When the ribs are located in the large diameter end of the trapezoidal blind hole 6, the ribs spring back and engage with the large diameter end of the trapezoidal blind hole 6.
[0024] Example 3
[0025] The difference between this embodiment and Embodiment 1 is that, as Figure 1 As shown, a leak-proof ring 3 is provided on the inner top surface of the lid 1. When the lid 1 is tightened at the can opening, the leak-proof ring 3 is inserted into the can opening and contacts the inner side wall of the can opening to form a sealing surface.
[0026] Example 4
[0027] The difference between this embodiment and Embodiment 1 is that, as Figure 1 As shown, the sealing ring 2 is fixedly installed on the inner top surface of the cover 1. When the cover 1 is tightened at the can opening, the top surface of the can opening is pressed into contact with the sealing ring 2.
[0028] Example 5
[0029] The difference between this embodiment and embodiment 4 is that the sealing ring 2 is made of food-grade silicone rubber. Food-grade silicone rubber has a silicon-oxygen bond main chain structure, has stable chemical properties, is insoluble in water and solvents, and does not react with common substances except strong alkalis and hydrofluoric acid, which meets my country's GB4806.11 standard.
[0030] Example 6
[0031] The difference between this embodiment and Embodiment 1 is that the cover 1, the anti-theft plate 5, and the pre-cut rib 4 are integrally injection molded from plastic material.
[0032] Example 7
[0033] The difference between this embodiment and Embodiment 6 is that the plastic material is polypropylene that conforms to my country's GB4806.7-2023 standard.
[0034] Example 8
[0035] The difference between this embodiment and Embodiment 1 is that, as Figure 2 As shown, the outer side of the cover 1 is provided with anti-slip texture 8.
[0036] Those skilled in the art will recognize that the embodiments described herein are intended to help the reader understand the principles of this application, and should be understood as not limiting the scope of protection of this application to such specific statements and embodiments. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.
Claims
1. A lightweight anti-theft lid for oyster sauce containers, characterized in that, include: The lid (1) has an internal thread on its inner side wall that matches the thread (9) on the outer side wall of the can opening; At least one anti-theft structure; an anti-theft structure includes a pre-broken rib (4), an observation port (7) and a repeatedly bendable anti-theft plate (5), the first end of the anti-theft plate (5) is connected to the bottom edge of the cover (1), the second end of the anti-theft plate (5) is inclined and engaged with the bottom surface of the locking ring (10) of the can opening, one end of the pre-broken rib (4) is fixedly connected to the inner side wall of the cover (1), and the other end is fixedly connected to the second end of the anti-theft plate (5), the observation port (7) is set on the side wall of the cover (1), and the observation port (7) is used to observe whether the pre-broken rib (4) is in a broken state.
2. The lightweight anti-theft cap for oyster sauce cans according to claim 1, characterized in that, The anti-theft structure also includes a trapezoidal blind hole (6), which is set on the outer wall of the cover (1). The large diameter end of the trapezoidal blind hole (6) faces the can opening. The second end of the anti-theft plate (5) is provided with a protrusion. After bending the anti-theft plate (5) to the preset position, the protrusion can undergo elastic deformation under the action of external force, pass through the small diameter end of the trapezoidal blind hole (6), and rebound to reset after entering the large diameter end to form a snap-fit.
3. The lightweight anti-theft cap for oyster sauce cans according to claim 1, characterized in that, A leak-proof ring (3) is provided on the inner top surface of the lid (1). When the lid (1) is tightened at the can opening, the leak-proof ring (3) is inserted into the can opening and contacts the inner side wall of the can opening to form a sealing surface.
4. The lightweight anti-theft cap for oyster sauce cans according to claim 1, characterized in that, The sealing ring (2) is fixedly installed on the inner top surface of the cover (1). When the cover (1) is tightened at the can opening, the top surface of the can opening is pressed against the sealing ring (2).
5. The lightweight anti-theft cap for oyster sauce cans according to claim 4, characterized in that, The sealing ring (2) is made of food-grade silicone rubber.
6. The lightweight anti-theft cap for oyster sauce cans according to claim 1, characterized in that, The cover (1), the anti-theft plate (5), and the pre-cut rib (4) are integrally injection molded from plastic material.
7. The lightweight anti-theft cap for oyster sauce cans according to claim 6, characterized in that, The plastic material is polypropylene.
8. The lightweight anti-theft cap for oyster sauce cans according to claim 1, characterized in that, The outer side of the cover (1) is provided with anti-slip texture (8).