Self-locking type packaging cover

Abstract

The utility model relates to the technical field of self-locking type packaging covers, and discloses a self-locking type packaging cover which comprises a packaging cover body, an L-shaped inserting opening and an L-shaped locking block, according to the self-locking type packaging cover, self-locking is achieved through cooperation of the L-shaped inserting opening and the L-shaped locking block, no nail or adhesive needs to be used for packaging, the material cost of a nail box or bonding is directly saved, and the packaging efficiency is improved. Meanwhile, the manual operation process is reduced, the packaging efficiency is improved, packaging can be completed directly through an L-shaped inserting opening and an L-shaped locking block after die cutting, traditional complex procedures are not needed, the transportation size and weight of packaging materials are reduced, and then the transportation cost is saved; stop blocks at the two ends of the L-shaped locking block and first magnetic attraction strips on the packaging cover body are attracted through second magnetic attraction strips; the stop blocks and the packaging cover body are tightly locked, in addition, the buffering effect of the elastic pads in the L-shaped inserting openings is achieved, the sealing performance and the anti-extrusion capacity of packaging are effectively improved, contents are protected, stress concentration is reduced through the arc-shaped design of the corners of the L-shaped inserting openings, the inserting openings are prevented from cracking, and the service life is prolonged.

Description

Technical Field

[0001] This application relates to the field of self-locking packaging cap technology, specifically a self-locking packaging cap. Background Technology

[0002] In the production of packaging containers, containers are designed to be open to specific needs, such as packaging cups, open paper cans, paper boxes, and paper drums, and are also designed with matching sealing lids. The advantages of paper lids are low cost, easy processing, easy mass production, and environmental friendliness, but their disadvantages are low strength and lack of moisture resistance. Therefore, they are widely used in single-use packaging fields, such as fast food packaging and medical / pharmaceutical packaging.

[0003] In existing packaging technologies, traditional packaging lids are typically sealed using nailing or gluing methods. This sealing method has many drawbacks: on the one hand, using nails or adhesives increases the material and labor costs of packaging; on the other hand, the die-cutting and packaging process of traditional packaging lids is relatively cumbersome, increasing transportation costs. Therefore, a self-locking packaging lid is proposed. Utility Model Content

[0004] To address the shortcomings of existing technologies, this application provides a self-locking packaging lid, which reduces manual operation processes, improves packaging efficiency, reduces the transportation volume and weight of packaging materials, and saves transportation costs.

[0005] To achieve the above objectives, this application provides the following technical solution: a self-locking packaging cap, comprising a packaging cap body, an L-shaped inlet, and an L-shaped locking block. Four sets of L-shaped inlets are provided, rectangularly arranged on the upper surface of the packaging cap body. The L-shaped locking block passes through the interior of the L-shaped inlet. Both ends of the L-shaped locking block are provided with stops. A second magnetic strip is provided at the lower end of each stop. A first magnetic strip is provided on the upper surface of the packaging cap body at a position corresponding to the stop. A V-shaped opening is provided at the upper end of the L-shaped locking block near the stop. An elastic pad is provided inside the L-shaped inlet.

[0006] Through the above scheme, the four sets of rectangular L-shaped sockets provide a precise insertion path for the L-shaped locking block, ensuring that the packaging cap body and the four corners of the box are locked synchronously, avoiding the problem of uneven force distribution in traditional single-point sealing, improving the symmetry and stability of the overall structure. The rectangular layout of the L-shaped sockets is adapted to the locking structure at the top of the box, which facilitates standardized production during die-cutting and reduces mold costs.

[0007] Furthermore, the L-shaped locking block is made of a plastic material with moderate hardness.

[0008] The above solution uses a plastic material with moderate hardness, which can adapt to the compression of the socket through elastic deformation when inserted, while maintaining structural strength and avoiding rigid wear or rust problems that may occur with metal materials.

[0009] Furthermore, the stop is made of a metal material with a certain strength.

[0010] The above solution enhances the load-bearing capacity of the locking point by using metal blocks at both ends. The rigidity of the metal material can effectively resist external impacts during transportation and prevent the blocks from deforming and causing locking failure.

[0011] Furthermore, the packaging cover body is provided with first folding side plates on both the left and right sides, the packaging cover body is provided with a box at the lower end, the upper end of the box is provided with second folding side plates on both the front and rear sides, the L-shaped locking block is fixedly connected to the upper end of the second folding side plate and the corresponding position of the L-shaped insertion, and the box is provided with openings on both the front and rear sides.

[0012] With the above solution, the first folding side panels on the left and right sides of the packaging cover and the second folding side panels on the front and rear sides of the upper part of the box are in an L-shaped unfolded state, forming a complete packaging structure frame.

[0013] Furthermore, the elastic pad is made of rubber.

[0014] The above solution buffers the impact of the L-shaped locking block during insertion, protecting the edge of the packaging cap from being squeezed and cracked, and extending the number of times the packaging can be reused.

[0015] Furthermore, both the first and second magnetic strips are made of permanent magnet material.

[0016] Through the above solution, the magnetic strip made of permanent magnet material generates a continuous attraction force after the stop block is inserted, which makes up for the slight gaps that may exist in pure mechanical locking, forming a dual locking mechanism of "mechanical engagement + magnetic assistance", which improves sealing performance and vibration resistance.

[0017] Furthermore, the size of the L-shaped socket is adapted to the size of the L-shaped locking block.

[0018] The above solution ensures insertion accuracy by matching the dimensions of the L-shaped socket and the L-shaped locking block. Combined with the combination of plastic, metal, and rubber materials, it achieves multi-dimensional performance optimization of "rigid support + elastic buffer + magnetic sealing".

[0019] Furthermore, the depth and angle of the V-shaped opening are set such that when the L-shaped locking block is inserted into the L-shaped socket, the elastic deformation of the groove wall squeezes the stop block, thereby facilitating the insertion of the stop block and forming a lock with the packaging cap body.

[0020] With the above solution, when the L-shaped locking block is inserted into the L-shaped socket, the upper stop block contacts the edge of the L-shaped socket. The specific depth and angle of the V-shaped opening cause the groove wall to undergo elastic deformation. The extrusion force generated by the deformation pushes the stop block towards the packaging cover body, making it easier for the stop block to be inserted.

[0021] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0022] This self-locking packaging lid achieves self-locking through the cooperation of an L-shaped inlet and an L-shaped locking block, eliminating the need for nails or adhesives, directly saving material costs associated with nailing or gluing. It also reduces manual operations, improving packaging efficiency. After die-cutting, the L-shaped inlet and locking block can be used directly for packaging, eliminating traditional complex processes and reducing the volume and weight of packaging materials for transport, thus saving transportation costs. The stops at both ends of the L-shaped locking block are attracted to the first magnetic strip on the lid body via a second magnetic strip, ensuring a tight lock between the stops and the lid body. Combined with the cushioning effect of the elastic pad inside the L-shaped inlet, this effectively improves the sealing and compression resistance of the packaging, protecting the contents. The arc design at the corner of the L-shaped inlet reduces stress concentration, preventing cracking and extending service life. The depth and angle of the V-shaped opening, through the elastic deformation of the groove wall, compresses the stops, facilitating the insertion of the L-shaped locking block into the L-shaped inlet, making operation convenient. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the packaging cap body of this application;

[0024] Figure 2 for Figure 1 Schematic diagram of the structure at point A;

[0025] Figure 3 This is an enlarged structural schematic diagram of the L-shaped locking block of this application;

[0026] Figure 4 This is a cross-sectional structural diagram showing the connection between the packaging cover body and the box body in this application.

[0027] Figure 5 This is a three-dimensional structural diagram of the packaging cover and the box body after they are connected.

[0028] In the picture:

[0029] 1. Packaging lid body; 2. L-shaped insertion port; 3. Elastic pad; 4. First magnetic strip; 5. L-shaped locking block; 6. Stop block; 7. Second magnetic strip; 8. V-shaped opening; 9. First folding side panel; 10. Box body; 11. Second folding side panel; 12. Opening. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] Please see Figure 1 , Figure 2 and Figure 3 This embodiment of a self-locking packaging cap includes a packaging cap body 1, an L-shaped inlet 2, and an L-shaped locking block 5. Four sets of L-shaped inlets 2 are rectangularly arranged on the upper surface of the packaging cap body 1. The L-shaped locking blocks 5 are inserted into the L-shaped inlets 2. Each end of the L-shaped locking block 5 has a stop block 6, and the lower end of the stop block 6 has a second magnetic strip 7. A first magnetic strip 4 is located on the upper surface of the packaging cap body 1 at a position corresponding to the stop block 6. A V-shaped opening 8 is formed at the upper end of the L-shaped locking block 5 near the stop block 6. An elastic pad 3 is provided inside the L-shaped inlet 2. The four sets of rectangularly distributed L-shaped inlets 2 provide a precise insertion path for the L-shaped locking blocks 5, ensuring that the packaging cap body 1 and the four corners of the box 10 are locked synchronously. This avoids the uneven force distribution problem of traditional single-point sealing, improves the symmetry and stability of the overall structure, and the rectangular layout of the L-shaped inlets 2 adapts to the locking structure at the upper end of the box 10, facilitating standardized production during die-cutting and reducing mold costs.

[0032] Please see Figure 1 , Figure 4 and Figure 5 The L-shaped locking block 5 is made of plastic material with moderate hardness, and the stop block 6 is made of metal material with a certain strength. The left and right sides of the packaging cover body 1 are provided with first folding side plates 9. The lower end of the packaging cover body 1 is provided with a box body 10. The upper end of the box body 10 is provided with second folding side plates 11 on the front and rear sides. The L-shaped locking block 5 is fixedly connected to the upper end of the second folding side plate 11 and the corresponding position of the L-shaped insertion port 2. The front and rear sides of the box body 10 are provided with openings 12. The L-shaped locking block 5 is made of plastic material with moderate hardness. When inserted, it can adapt to the compression of the insertion port through elastic deformation, while maintaining structural strength and avoiding rigid wear or rust problems that may occur in metal materials. The metal stop blocks 6 at both ends enhance the load-bearing capacity of the locking point. The rigidity of the metal material can effectively resist the impact of external forces during transportation and prevent the stop block 6 from deforming and causing locking failure. The first folding side plates 9 on the left and right sides of the packaging cover body 1 and the second folding side plates 11 on the front and rear sides of the upper end of the box body 10 are in an L-shaped unfolded state, forming a complete packaging structure frame.

[0033] Please see Figure 1 , Figure 2 and Figure 3The elastic pad 3 is made of rubber, and the first magnetic strip 4 and the second magnetic strip 7 are both made of permanent magnets. The size of the L-shaped insertion port 2 is adapted to the size of the L-shaped locking block 5. The depth and angle of the V-shaped opening 8 are set such that when the L-shaped locking block 5 is inserted into the L-shaped insertion port 2, the elastic deformation of the groove wall squeezes the stop block 6, thus facilitating the insertion of the stop block 6 and locking it with the packaging cap body 1. The rubber elastic pad 3 buffers the impact force of the L-shaped locking block 5 during insertion, protecting the insertion edge of the packaging cap body 1 from being squeezed and cracked, and extending the number of times the packaging can be reused. The permanent magnet magnetic strip generates a continuous attraction force after the stop block 6 is inserted, compensating for the slight gaps that may exist in pure mechanical locking, forming a dual locking mechanism of "mechanical engagement + magnetic assistance", improving sealing and vibration resistance. The size adaptation between the L-shaped insertion port 2 and the L-shaped locking block 5 ensures insertion accuracy. Combined with the combination of plastic, metal, and rubber materials, it achieves "rigid support + elastic buffer + The multi-dimensional performance optimization of "magnetic sealing" means that when the L-shaped locking block 5 is inserted into the L-shaped socket 2, the upper stop block 6 contacts the edge of the L-shaped socket 2. The specific depth and angle of the V-shaped opening 8 cause the groove wall to undergo elastic deformation. The extrusion force generated by the deformation pushes the stop block 6 towards the packaging cover body 1, making it easier for the stop block 6 to be inserted.

[0034] In this embodiment, self-locking is achieved through the cooperation of the L-shaped insertion port 2 and the L-shaped locking block 5, eliminating the need for nails or adhesives for sealing, directly saving material costs associated with nailing or gluing, while also reducing manual operation processes and improving packaging efficiency. After die-cutting, packaging can be completed directly using the L-shaped insertion port 2 and the L-shaped locking block 5, eliminating the need for traditional complex processes, reducing the transportation volume and weight of packaging materials, and thus saving transportation costs. The blocks 6 at both ends of the L-shaped locking block 5 are attracted to the first magnetic strip 4 on the packaging cover body 1 through the second magnetic strip 7, making the blocks 6 and the packaging cover body 1 lock tightly. In addition, the cushioning effect of the elastic pad 3 inside the L-shaped insertion port 2 effectively improves the sealing and compression resistance of the packaging, protecting the contents. The arc design at the corner of the L-shaped insertion port 2 reduces stress concentration, prevents the insertion port from cracking, and extends the service life. The depth and angle settings of the V-shaped opening 8, through the elastic deformation of the groove wall to squeeze the blocks 6, facilitate the insertion of the L-shaped locking block 5 into the L-shaped insertion port 2, making operation convenient.

[0035] The working principle of the above embodiment is as follows: The first folding side plates 9 on the left and right sides of the packaging cover body 1 and the second folding side plates 11 on the front and rear sides of the upper end of the box body 10 are in an L-shaped unfolded state, forming a complete packaging structure frame. The L-shaped locking block 5 is fixed to the upper end of the second folding side plate 11 and corresponds to the position of the L-shaped insertion 2 on the packaging cover body 1. The packaging cover body 1 is covered on the upper end of the box body 10, so that the four sets of L-shaped insertions 2 are respectively aligned with the L-shaped locking block 5. When the L-shaped locking block 5 is inserted into the L-shaped insertion 2, the upper stop block 6 contacts the edge of the L-shaped insertion 2. The specific depth and angle of the V-shaped opening 8 causes the groove wall to undergo elastic deformation. The extrusion force generated by the deformation pushes the stop block 6 towards the packaging cover body 1, which facilitates the insertion of the stop block 6. The elastic pad 3 inside the L-shaped insertion 2 is compressed to generate a buffering force, which reduces the rigid collision during insertion on the one hand, and generates a clamping force on the L-shaped locking block 5 through elastic deformation to achieve positioning. The second end of the stop block 6 The magnetic strip 7 and the first magnetic strip 4 at the corresponding position on the upper surface of the packaging lid body 1 attract each other. When the stop block 6 is inserted into the corresponding position, the magnetic force further connects the stop block 6 and the packaging lid body 1 tightly, forming a stable lock. When it is necessary to lift the box 10, the hand passes through the openings 12 on the front and rear sides of the box 10. During the lifting process, the hand will push against the second folding side plate 11. The applied external force is transmitted to the L-shaped locking block 5 through the second folding side plate 11, which helps the L-shaped locking block 5 to pass more smoothly into the L-shaped insertion 2, strengthens the locking effect, and realizes the linkage between the lifting action and the locking structure. After assembly, the first folding side plate 9 of the packaging lid body 1 and the second folding side plate 11 of the box 10 form a complete packaging side wall, which enhances the overall structure. At the same time, the cooperation of the L-shaped insertion 2 and the L-shaped locking block 5, the adsorption of the magnetic strip, and the buffering of the elastic pad 3 work together to make the packaging lid body 1 and the box 10 tightly connected, ensuring the stability and sealing of the packaging.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0037] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A self-locking package cover, comprising a package cover body (1), an L-shaped socket (2) and an L-shaped locking block (5), characterized in that: The L-shaped socket (2) is provided in four sets and is rectangularly opened on the upper surface of the packaging cover body (1). The L-shaped locking block (5) is inserted inside the L-shaped socket (2). Both ends of the L-shaped locking block (5) are provided with a stop block (6). The lower end of the stop block (6) is provided with a second magnetic strip (7). The upper surface of the packaging cover body (1) and the corresponding position of the stop block (6) are provided with a first magnetic strip (4). The upper end of the L-shaped locking block (5) is opened with a V-shaped opening (8) near the stop block (6). The L-shaped socket (2) is provided with an elastic pad (3).

2. A self-locking package lid according to claim 1, characterized in that: The L-shaped locking block (5) is made of plastic material with moderate hardness.

3. A self-locking package lid according to claim 1, characterized in that: The stop block (6) is made of a metal material with a certain strength.

4. A self-locking package lid according to claim 1, characterized in that: The packaging cover body (1) is provided with first folding side plates (9) on both the left and right sides. The packaging cover body (1) is provided with a box body (10) at the lower end. The upper end of the box body (10) is provided with second folding side plates (11) on both the front and rear sides. The L-shaped locking block (5) is fixedly connected to the upper end of the second folding side plate (11) and the corresponding position of the L-shaped socket (2). The box body (10) is provided with openings (12) on both the front and rear sides.

5. A self-locking packaging lid according to claim 1, characterized in that: The elastic pad (3) is made of rubber.

6. A self-locking package lid according to claim 1, characterized in that: Both the first magnetic strip (4) and the second magnetic strip (7) are made of permanent magnet material.

7. A self-locking package lid according to claim 1, characterized in that: The size of the L-shaped socket (2) is adapted to the size of the L-shaped locking block (5).

8. A self-locking package lid according to claim 1, characterized in that: The depth and angle of the V-shaped opening (8) are set such that when the L-shaped locking block (5) is inserted into the L-shaped socket (2), the stop block (6) is squeezed by the elastic deformation of the groove wall, so that the stop block (6) can be inserted and locked with the packaging cover body (1).

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