Light smart card
By adopting a shell design with a film layer and a braided layer in the smart card, combined with an integrated molding frame, the problem of heavy traditional smart cards is solved, and a lightweight, durable and protective smart card is realized, suitable for a variety of environments.
Patent Information
- Application Number
- CN202422425102.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-09
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-10-09
AI Technical Summary
Traditional smart cards are thick, which limits their application in lightweight and thin devices, and it is difficult to ensure strength, durability and information security performance in the pursuit of lightweight.
The shell design is adopted, including the outer film layer and braided layer. The film layer is a superhydrophobic film, a polytetrafluoroethylene film or a nanocomposite film. The braided layer is woven horizontally and vertically braided to form a tight mesh structure. The frame adopts an integrated column, beam and reinforcement structure.
It realizes the lightweightness of the smart card, while ensuring structural strength and protective performance, enhancing the durability and stability of the card, preventing physical damage and moisture erosion, and adapting to various environments.
Smart Images
Figure CN223140180U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of smart cards, and specifically relates to a lightweight smart card. Background Art
[0002] With the rapid development of information technology, smart cards, as a convenient and secure information storage and transmission medium, have been widely used in various fields. Smart cards can be used not only for identity authentication and financial transactions, but also for data storage, encrypted communication and other scenarios. Traditional smart cards are often made of relatively heavy materials, which to a certain extent limits their scope of use, especially in occasions where lightweight and thin devices are required.
[0003] In order to meet the market demand for lightweight and thin smart cards, the industry has been exploring new materials and processes in order to achieve the lightweight of smart cards. However, in the process of pursuing lightweight, how to ensure the strength, durability and information security performance of smart cards has become an urgent problem to be solved. Summary of the Invention
[0004] In order to overcome the deficiencies of the prior art solutions, the utility model provides a lightweight smart card, which can effectively solve the problems raised in the background art.
[0005] The technical solution adopted by the utility model to solve its technical problems is: a lightweight smart card, including a frame body constituting the smart card structure, a housing for protection, a main board for storing and processing data, and a coil for signal transceiver. The housing is divided into an upper housing and a lower housing. The housing includes a thin film layer located on the outside and a woven layer for improving the structural strength.
[0006] Preferably, the woven layer includes a first woven wire and a second woven wire, and the first woven wire and the second woven wire are woven vertically and horizontally.
[0007] Preferably, the cross-sections of the first woven wire and the second woven wire are both circles with the same area size.
[0008] Preferably, the interval between the first woven wires is 2.5 times to 6 times the diameter of the cross-section of the woven wire.
[0009] Preferably, the interval between the second woven wires is 2.5 times to 8 times the diameter of the cross-section of the woven wire.
[0010] Preferably, the thin film layer is one of a superhydrophobic thin film, a polytetrafluoroethylene thin film and a nanocomposite thin film.
[0011] Preferably, the frame body includes columns and crossbeams. The crossbeams are fixedly connected to the upper and lower surfaces of the columns. Reinforcing members are provided at the four corners of the frame body. The reinforcing members are fixedly connected to the crossbeams. The columns, crossbeams and reinforcing members are of an integrally formed structure.
[0012] Preferably, the braided layer is wrapped around the outside of the frame body.
[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: The light weight of the light weight smart card is mainly due to the thin film layer and the braided layer in the housing design. These two parts not only ensure the protection performance and structural strength of the smart card, but also achieve the goal of light weight of the card through the use of lightweight materials and reasonable structural design. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 is a structural schematic diagram of the present utility model Figure 1 ;
[0015] Figure 2 is a structural schematic diagram of the present utility model Figure 2 ;
[0016] Figure 3 is a sectional view of the housing structure of the present utility model;
[0017] Figure 4 is a schematic diagram of the braided layer structure of the present utility model.
[0018] Reference numerals in the drawings:
[0019] 1 - frame body, 2 - housing, 3 - main board, 4 - coil, 11 - reinforcement member, 12 - column, 13 - cross beam, 21 - thin film layer, 22 - braided layer, 221 - first woven wire, 222 - second woven wire. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0020] The following describes the embodiments of the present disclosure in detail with reference to the drawings.
[0021] The following illustrates the embodiments of the present disclosure through specific examples. Those skilled in the art can easily understand other advantages and effects of the present disclosure from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. The present disclosure can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present disclosure. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present disclosure without creative efforts belong to the scope of protection of the present disclosure. Embodiment
[0022] As Figures 1-4As shown, the utility model provides a lightweight smart card, including a frame 1 constituting a smart card structure, a shell 2 for protection, a mainboard 3 for storing and processing data, and a coil 4 for signal reception and transmission, wherein the shell 2 is divided into an upper shell 2 and an lower shell 2, and the shell 2 includes a thin film layer 21 located on the outside and a woven layer 22 for improving the structural strength.
[0023] The film layer 21 is located on the outside of the housing 2 and can effectively resist external physical damage and moisture erosion. Moreover, its lightweight feature significantly reduces the overall weight of the smart card.
[0024] The braided layer 22 is an important component of the shell 2. While improving the structural strength, it also achieves a lightweight effect. The braided layer 22 is woven with high-strength fiber material. This material itself has the characteristics of being lightweight, and its braided structure also enhances the overall strength of the shell 2. Through reasonable weaving methods and material selection, the braided layer 22 can reduce the weight of the shell 2 as much as possible while maintaining sufficient strength.
[0025] Through the combined effect of the film layer 21 and the woven layer 22, the shell 2 design of the lightweight smart card achieves a balance between structural strength and lightness; this design not only ensures the durability and stability of the smart card in various environments, but also makes the card lighter and easier to carry.
[0026] See also Figure 4 The braided layer 22 includes a first braided wire 221 and a second braided wire 222 , and the first braided wire 221 and the second braided wire 222 are woven in an alternating manner horizontally and vertically.
[0027] By weaving the first and second yarns 221 and 222 in an interlaced manner, the braided layer 22 forms a tight mesh structure; this structure can effectively disperse the external pressure and impact force, thereby improving the impact resistance and tensile strength of the entire shell 2, ensuring that the smart card is not easily deformed or damaged during use.
[0028] The horizontal and vertical interlaced weaving method makes the braided layer 22 have good stability in multiple directions; the braided layer 22 can effectively resist through its internal mesh structure, maintain the stable shape of the smart card, and prevent it from twisting or deformation during use.
[0029] The braided layer 22 is made of a lightweight material, and its tight weaving method also avoids unnecessary material waste; this design not only ensures the strength of the shell 2, but also makes the smart card lightweight, making the card easier to carry and use.
[0030] See also Figure 4 The cross-sections of the first yarn 221 and the second yarn 222 are both circles with the same area.
[0031] The circular cross-section means that the first woven wire 221 and the second woven wire 222 have the same force-bearing area in all directions; when an external force acts on the woven layer 22, the design of the circular cross-section can ensure that the force is evenly distributed on the woven wires, avoiding excessive local stress and damage, and improving the durability and stability of the smart card.
[0032] See Figure 4 , the spacing between the first woven wires 221 is 2.5 to 6 times the diameter of the cross-section of the woven wire.
[0033] The design with the spacing within this range can ensure that there is enough space between the first woven wires 221 to resist external pressure and impact force. If the spacing is too small, the woven wires may be too dense, resulting in insufficient deformation space when under pressure and being prone to breakage. While if the spacing is too large, it may lead to a loose structure and reduced strength. Therefore, such a spacing design can provide enough deformation space while maintaining the structural strength, enabling the woven layer 22 to better absorb and disperse external forces.
[0034] By controlling the spacing between the first woven wires 221, it is possible to avoid unnecessary material accumulation while maintaining the structural strength, thus keeping the smart card lightweight. If the spacing is too small, although the structural strength may increase, it will also lead to an increase in material usage and make the card heavier.
[0035] See Figure 4 , the spacing between the second woven wires 222 is 2.5 to 8 times the diameter of the cross-section of the woven wire.
[0036] By controlling the spacing between the second woven wires 222 within this range, it is possible to increase the flexibility of the woven layer 22 while maintaining its structural strength. If the spacing is too small, although the structural strength may be relatively high, the flexibility will be affected, resulting in the card being less flexible during use. While an appropriate spacing can ensure that there is enough space between the woven wires for bending and deformation, thus improving the flexibility of the card.
[0037] See Figure 3 , the thin film layer 21 is one of a superhydrophobic thin film, a polytetrafluoroethylene thin film, and a nanocomposite thin film.
[0038] The superhydrophobic thin film has special surface properties, making it difficult for water droplets to stay on its surface, thus effectively preventing moisture from penetrating into the card interior and ensuring the normal use of the card in a humid environment; its superhydrophobicity can also effectively prevent the attachment of stains and keep the card surface clean. Due to the surface characteristics of the superhydrophobic thin film, water droplets are easy to roll on its surface and carry away dust and dirt, thus achieving a self-cleaning function. The superhydrophobic thin film has strong wear resistance and scratch resistance, which helps to protect the card surface from physical damage and extend the service life of the card.
[0039] The polytetrafluoroethylene film has good high-temperature and low-temperature resistance, ensuring that the card can still work properly under extreme temperature conditions. This film shows inertness to most chemicals and solvents, and can effectively resist the erosion of strong acids, strong bases and various organic solvents; the PTFE film has a low friction coefficient and the smallest surface tension, does not adhere to any substances, and helps to keep the card surface clean and smooth.
[0040] By regulating the grain size in the microstructure, the nano-composite film can significantly improve the hardness and toughness of the film, enhancing the impact resistance and bending resistance of the card; this film also has excellent wear resistance and can effectively resist wear and scratches during daily use.
[0041] See Figure 1 , the frame 1 includes columns 12 and crossbeams 13. The crossbeams 13 are fixedly connected to the upper and lower surfaces of the columns 12. Reinforcement members 11 are provided at the four corners of the frame 1, and the reinforcement members 11 are fixedly connected to the crossbeams 13. The columns 12, crossbeams 13 and reinforcement members 11 are of an integrally formed structure.
[0042] The columns 12 and crossbeams 13, as the main load-bearing parts of the frame 1, form a stable frame structure through fixed connection. This structure can effectively disperse and bear the external pressure or impact force, ensuring that the smart card is not easily deformed or damaged during use. The design of the reinforcement members 11 further enhances the structural strength of the frame 1 at the four corners and improves the overall stability.
[0043] By adopting an integrally formed structure, the columns 12, crossbeams 13 and reinforcement members 11 can be seamlessly connected, reducing the connecting parts and additional support structures, thus realizing the lightweight of the frame 1. This design not only reduces the weight of the smart card, making it more convenient to carry and use, but also reduces the use of materials, meeting the requirements of environmental protection and energy conservation.
[0044] Enhanced durability: The integrally formed structure makes the connection between the various parts of the frame 1 more firm, reducing the risk of damage caused by loosening or breaking. In addition, this structure also has good fatigue resistance and corrosion resistance, and can maintain good performance for a long time in different environments.
[0045] See Figure 1 , the braided layer 22 is wrapped around the outside of the frame 1.
[0046] The braided layer 22 is tightly wrapped around the outside of the frame 1, providing an additional layer of protection for the smart card. It can effectively prevent external physical damage, such as scratching, impact, etc., ensuring the integrity and beauty of the card.
[0047] The tight combination of the braided layer 22 and the frame 1 enhances the overall structural stability of the smart card.
[0048] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by terms such as "middle", "length", "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.
[0049] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" the second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. The meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0050] In the present utility model, unless otherwise clearly specified and defined, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0051] The above is only to illustrate the embodiments of the present utility model and is not used to limit the present utility model. For those skilled in the art, any modifications, equivalent replacements, improvements, etc. made without creative efforts within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A lightweight smart card, comprising a frame body constituting the smart card structure, a housing for protection, a main board for storing and processing data, and a coil for signal transceiver, characterized in that, The housing is divided into an upper housing and a lower housing, and the housing includes a thin film layer located on the outside and a woven layer for enhancing structural strength.
2. The lightweight smart card according to claim 1, characterized in that: The woven layer includes a first yarn and a second yarn, and the first yarn and the second yarn are woven vertically and horizontally.
3. The lightweight smart card according to claim 2, characterized in that: The cross-sections of the first yarn and the second yarn are both circles with the same area.
4. A lightweight smart card according to claim 3, wherein: The spacing between the first yarns is 2.5 to 6 times the diameter of the cross-section of the yarn.
5. The lightweight smart card according to claim 3, wherein: The spacing between the second yarns is 2.5 to 8 times the diameter of the cross-section of the yarn.
6. A lightweight smart card according to any one of claims 1-5, characterized in that: The thin film layer is one of a superhydrophobic thin film, a polytetrafluoroethylene thin film, and a nanocomposite thin film.
7. A lightweight smart card according to claim 1, characterized in that: The frame includes columns and crossbeams. The crossbeams are fixedly connected to the upper and lower surfaces of the columns. Reinforcing members are provided at the four corners of the frame, and the reinforcing members are fixedly connected to the crossbeams. The columns, crossbeams, and reinforcing members are of an integrally formed structure.
8. A lightweight smart card according to claim 1, characterized in that: The woven layer is wrapped around the outside of the frame.