A type of jewelry with an embedded NFC chip
By setting a groove on the jewelry body and embedding a large-diameter, large-area NFC coil, and adding an anti-metal material layer at the bottom of the groove, the effects of metal interference and high-temperature packaging on the NFC chip are solved, improving communication sensitivity and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN PULI INFORMATION TECHNOLOGY CO LTD
- Filing Date
- 2025-08-14
- Publication Date
- 2026-06-30
Smart Images

Figure CN224420284U_ABST
Abstract
Description
Technical Field
[0001] This specification relates to the field of near field communication technology, and in particular to a piece of jewelry with an embedded NFC chip. Background Technology
[0002] With the widespread adoption of Near Field Communication (NFC) technology, its applications in smart wearables, cultural and creative jewelry, and other fields are becoming increasingly common. NFC technology enables fast data transmission, identity verification, and mobile payment, giving traditional jewelry intelligent interactive capabilities.
[0003] However, when the NFC module is embedded in metal-based cultural and creative products (such as titanium steel, gold and silver, aluminum, iron, etc.), the interference of the metal with the electromagnetic field can significantly reduce the sensitivity of the NFC coil, and even cause communication failure. Furthermore, if resin potting is used to fix the NFC module during manufacturing, the dripping of high-temperature resin may damage the delicate structure of the NFC coil, affecting its performance and reliability.
[0004] Therefore, ensuring the high performance and stability of NFC chips embedded in metal jewelry is an urgent problem to be solved. Summary of the Invention
[0005] This specification provides an accessory with an embedded NFC chip to at least partially solve the aforementioned problems existing in the prior art.
[0006] The following technical solution is adopted in this specification:
[0007] A piece of jewelry with an embedded NFC chip includes: a jewelry body, a groove, and an NFC coil;
[0008] The groove is set at a designated position on the body of the ornament. The designated position is the position that minimizes the volume of metal contained in the designated space. The designated space is centered on the center of the groove, has the same shape as the groove, and has a larger volume than the groove.
[0009] The NFC coil is disposed within the groove, the length of the shortest side of the surface where the groove is located is greater than the diameter of the NFC coil by no more than 1.5 mm, the area of the NFC coil is not less than 60 square millimeters, and the thickness of the NFC coil is less than the depth of the groove.
[0010] Alternatively, the groove is formed on the surface of the jewelry body by etching.
[0011] Optionally, the surface containing the groove is the surface with the smallest area among all the surfaces of the ornament.
[0012] Optionally, the depth of the groove is greater than the thickness of the NFC coil by not less than 0.8 mm and not more than 1.2 mm.
[0013] Optionally, the thickness of the sealing surface of the groove is no more than 0.1 mm.
[0014] Optionally, the diameter of the NFC coil is not less than 4 mm.
[0015] Optionally, the ornament further includes: an anti-metal material layer;
[0016] The anti-metal material layer is disposed between the NFC coil and the bottom of the groove, and is attached to the bottom of the groove.
[0017] The above-mentioned technical solutions adopted in this specification can achieve the following beneficial effects:
[0018] The NFC chip-embedded jewelry provided in this specification includes a jewelry body, a groove, and an NFC coil. The groove is disposed at a designated position on the jewelry body, the designated position being the position that minimizes the volume of metal contained in a designated space. The designated space is centered on the center of the groove, has the same shape as the groove, and has a larger volume than the groove. The NFC coil is disposed within the groove, the length of the shortest side of the surface where the groove is located is greater than the diameter of the NFC coil but not exceeding 1.5 mm, the area of the NFC coil is not less than 60 square millimeters, and the thickness of the NFC coil is less than the depth of the groove.
[0019] The NFC-embedded jewelry described in this manual utilizes a large-diameter, large-area NFC coil and positions the groove in the area with the smallest possible metal surface on the jewelry body. This design allows the NFC coil to possess superior resistance to metal and high temperatures while significantly reducing the impact of metal materials on the NFC coil. When using the NFC-embedded jewelry designed in this manual, the NFC chip within the jewelry exhibits high communication sensitivity and effectively prevents damage to the NFC coil caused by high-temperature packaging processes. Attached Figure Description
[0020] The accompanying drawings, which are included to provide a further understanding of this specification and form part of this specification, illustrate exemplary embodiments and are used to explain this specification, but do not constitute an undue limitation thereof. In the drawings:
[0021] Figure 1 This is a schematic diagram of the structure of a piece of jewelry with an embedded NFC chip, as provided in this specification.
[0022] Figure 2 This is a schematic diagram of the parameters of a groove and an NFC coil provided in this specification. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of this specification clearer, the technical solutions of this specification will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this specification, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments in this specification without creative effort are within the scope of protection of this application.
[0024] The technical solutions provided in the various embodiments of this specification are described in detail below with reference to the accompanying drawings.
[0025] Figure 1 This is a schematic diagram of the structure of a piece of jewelry with an embedded NFC chip, as described in this specification, including: the jewelry body, a groove, and an NFC coil;
[0026] The groove is set at a designated position on the body of the ornament. The designated position is the position that minimizes the volume of metal contained in the designated space. The designated space is centered on the center of the groove, has the same shape as the groove, and has a larger volume than the groove.
[0027] The NFC coil is disposed within the groove, the length of the shortest side of the surface where the groove is located is greater than the diameter of the NFC coil by no more than 1.5 mm, the area of the NFC coil is not less than 60 square millimeters, and the thickness of the NFC coil is less than the depth of the groove.
[0028] like Figure 1 As shown, the NFC-embedded jewelry provided in this specification may include a jewelry body, a groove disposed in the jewelry body, and an NFC coil disposed inside the groove. The shape of the jewelry body can be any shape, such as common badges, cylindrical objects, and various irregular shapes. For ease of demonstration and understanding, this specification primarily uses... Figure 1 The cross-shaped ornament shown is used as an example for illustration. Furthermore, the ornament can contain any metal; this instruction manual does not impose specific restrictions on this.
[0029] On one of the surfaces of the jewelry, a groove is provided to accommodate the NFC chip. The groove is formed on the body of the jewelry by means of a process such as etching, with the plane of the surface serving as the opening of the groove.
[0030] Generally, the larger the area of metal surrounding an NFC chip, the greater the impact of the metal on the chip's performance. In this application, to minimize the interference of metal on the performance of the NFC chip located within the groove, the groove is preferentially positioned in the area with the smallest surrounding metal area.
[0031] When the volume of metal surrounding the groove is minimized, the metal area surrounding the NFC chip placed within it is also minimized accordingly. Therefore, after determining the shape and size of the groove, a designated space with the same shape as the groove but larger in size can be constructed. The center of the designated space is the same as the center of the groove, and their positions change synchronously. While ensuring that the entire groove is inside the jewelry body and that the opening of the groove is located on one surface of the jewelry body, the positions of the groove and the designated space are continuously changed until the position that minimizes the volume of metal contained in the designated space is determined. This position is then determined as the designated location for setting the groove.
[0032] exist Figure 1 In the illustrated embodiment, the groove is rectangular. In other embodiments, the shape of the groove may be changed accordingly to meet specific needs, and may be set to any other shape; this specification does not impose specific limitations on this.
[0033] Furthermore, the surface where the opening of the groove is located can be considered the surface where the groove is located. In some cases, the groove can be directly placed on the surface with the smallest area among all surfaces of the jewelry, which can reduce metal interference to a certain extent and greatly simplify the selection process of the groove position.
[0034] In this application, the NFC chip is disposed in the form of a coil within a groove in the jewelry body. To enable the NFC coil to possess metal-resistant and high-temperature-resistant properties, the NFC coil in this application is designed to be a large-sized NFC coil, specifically in terms of both a larger diameter and a larger area.
[0035] Figure 2 This is a schematic diagram illustrating the parameters of a groove and an NFC coil provided in this specification. Figure 2 As shown in the diagram, the depth of the groove in the jewelry, as well as the length, diameter, and thickness of the NFC coil, are marked. The NFC coil can be in shapes such as cuboids or cylinders. There are no constraints on the length, diameter, and thickness of the NFC coil; they can all be set according to requirements and can be designed to have the same values.
[0036] On the one hand, the NFC coil in the jewelry provided in this application has a relatively large diameter, so that the NFC coil has high-temperature resistance when using resin. Specifically, the length of the NFC coil diameter can be set to be no more than 1.5 mm shorter than the length of the shortest side of the surface where the groove is located. Thus, the NFC coil has a sufficiently large diameter relative to the size of the jewelry, which enables the NFC coil to have high-temperature resistance when using resin.
[0037] Additionally, for most standard-sized jewelry pieces, the diameter of the NFC coil can be set to a value such as no less than 4 millimeters to ensure its high-temperature resistance. Of course, excessive NFC coil thickness will affect the depth of the grooves on the jewelry. While ensuring the NFC coil meets high-temperature resistance requirements, its thickness can be limited based on the size of the jewelry to reduce metal interference.
[0038] On the other hand, the NFC coil in the jewelry provided in this application has a relatively large area to give it excellent resistance to metal interference and ensure sufficient signal sensitivity. The area of the NFC coil can be expressed as the product of its length and diameter. Specifically, the area of the NFC coil can be set to, for example, not less than 60 square millimeters. However, it should be noted that if the jewelry itself is small, an excessively large NFC coil area may affect the aesthetics of the jewelry. Therefore, while meeting the requirements for resistance to metal interference, the size of the NFC coil can be limited according to the volume of the jewelry itself.
[0039] In one specific embodiment, to further reduce the impact of metal on NFC chip performance, the depth of the groove can be additionally limited to be slightly greater than the thickness of the NFC coil, avoiding an excessively deep groove that would result in an excessively large metal area around the NFC coil. For example, the groove depth can be specifically set to exceed the NFC coil thickness by at least 0.8 mm and no more than 1.2 mm. This ensures sufficient space and redundancy for the NFC coil while minimizing the metal area around it.
[0040] Similarly, to achieve the same goal, the thickness of the sealing surface of the groove can be further limited during sealing to minimize the metal area around the NFC coil. For example, specifically, the thickness of the sealing surface of the groove can be set to no more than 0.1 mm.
[0041] Additionally, in this application, an anti-metal material layer can be additionally provided at the bottom of the groove to further mitigate the impact of metal materials on the performance of the NFC chip. The anti-metal material layer can be directly attached to the bottom of the groove to isolate the metal at the bottom of the groove from the NFC chip inside the groove, thus achieving the anti-metal effect.
[0042] The NFC chip-embedded jewelry provided in this manual can be used as part of jewelry, such as pendants on necklaces, earrings, or bracelets; or it can be used as a standalone decorative item. This manual does not impose any specific restrictions on this.
[0043] The NFC-embedded jewelry described in this manual utilizes a large-diameter, large-area NFC coil and positions the groove in the area with the smallest possible metal surface on the jewelry body. This design allows the NFC coil to possess superior resistance to metal and high temperatures while significantly reducing the impact of metal materials on the NFC coil. When using jewelry designed according to this manual, the NFC chip within the jewelry can achieve high communication sensitivity and effectively prevent damage to the NFC coil caused by high-temperature packaging processes.
[0044] It should also be noted that 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 limitation, 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 said element.
[0045] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.
[0046] The above description is merely an embodiment of this specification and is not intended to limit this specification. Various modifications and variations can be made to this specification by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this specification should be included within the scope of the claims of this application.
Claims
1. A jewelry embedded with NFC chip, characterized in that, include: Jewelry body, groove, NFC coil; The groove is set at a designated position on the body of the ornament. The designated position is the position that minimizes the volume of metal contained in the designated space. The designated space is centered on the center of the groove, has the same shape as the groove, and has a larger volume than the groove. The NFC coil is disposed within the groove, the length of the shortest side of the surface where the groove is located is greater than the diameter of the NFC coil by no more than 1.5 mm, the area of the NFC coil is not less than 60 square millimeters, and the thickness of the NFC coil is less than the depth of the groove.
2. The article of jewelry of claim 1, wherein, The groove is formed on the surface of the jewelry body by etching.
3. The ornament as described in claim 1, characterized in that, The surface containing the groove is the surface with the smallest area among all the surfaces of the ornament.
4. The ornament as described in claim 1, characterized in that, The depth of the groove is greater than the thickness of the NFC coil by not less than 0.8 mm and not more than 1.2 mm.
5. The ornament as described in claim 1, characterized in that, The thickness of the sealing surface of the groove is no more than 0.1 mm.
6. The ornament as described in claim 1, characterized in that, The diameter of the NFC coil is not less than 4 mm.
7. The ornament as described in claim 1, characterized in that, The ornament also includes: an anti-metal material layer; The anti-metal material layer is disposed between the NFC coil and the bottom of the groove, and is attached to the bottom of the groove.