Data line interface against electromagnetic interference, electronic device accessory, and electronic device

Abstract

The utility model belongs to connector technical field discloses a data line interface of anti-electromagnetic interference, electronic equipment accessories and electronic equipment, data line interface includes interface body and shielding sleeve, interface body has and the external insertion end of connection end, connection end connects circuit board, and the external insertion end is used for the plug-in of external equipment, shielding sleeve is equipped with in interface body, is used for absorbing or inhibiting the electromagnetic radiation and / or noise of data line interface data transmission process or the generation of charging and discharging process. The utility model replaces the existing common mode inductor with shielding sleeve, need not the frequent switching of complex production technology and special tool, is favorable for reducing artificial cost, improves the yield, is suitable for full -automatic mass production. And the volume is smaller, need not additional space, is favorable for reducing efficiency loss, can guarantee the integrity of PD eye diagram data.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and in particular to an electromagnetic interference resistant data cable interface, electronic device accessories, and electronic devices. Background Technology

[0002] Electromagnetic interference (EMI) refers to an electromagnetic phenomenon that can adversely affect living organisms or matter. EMI is usually generated by voltage and current and degrades the performance of surrounding devices, equipment, or systems. With the miniaturization and high integration of consumer electronic devices, the Type-C interface, as the primary interface for data transmission and charging, has become increasingly problematic due to its EMI issues. Traditional EMI suppression methods for Type-C interfaces typically involve adding a common-mode inductor to the front end of the interface. However, as electronic devices continue to shrink, the size and losses of common-mode inductors have become limiting factors. Furthermore, the losses of common-mode inductors contradict the requirements of upcoming energy efficiency standards, and their manufacturing process is complex, making it difficult to meet the performance and production needs of modern electronic devices. Utility Model Content

[0003] The purpose of this utility model embodiment is to solve the technical problem that the existing electromagnetic interference suppression methods of data line interfaces are difficult to meet the needs of modern electronic devices.

[0004] In a first aspect, this utility model embodiment provides an electromagnetic interference-resistant data cable interface, which adopts the following technical solution:

[0005] The electromagnetic interference resistant data line interface includes:

[0006] The interface body has a connecting end and an external plug-in end; the connecting end connects to the circuit board, and the external plug-in end is used for plugging in external devices; and

[0007] A shielding sleeve is fitted onto the interface body; the shielding sleeve is used to absorb or suppress electromagnetic radiation and / or noise generated during the data transmission process or charging and discharging process of the data line interface.

[0008] In some embodiments, the inner wall of the shielding sleeve is adapted to the outer wall of the interface body;

[0009] And / or, the cross-sectional shape of the inner wall of the shielding sleeve is the same as the cross-sectional shape of the outer wall of the interface body.

[0010] In some embodiments, the shielding sleeve has a cross-sectional shape of a key-shaped ring with semi-circular ends.

[0011] In some embodiments, the inner wall of the shielding sleeve is attached to the outer wall of the interface body.

[0012] In some embodiments, the shielding sleeve is made of a magnetic material.

[0013] In some embodiments, the shielding sleeve is made of ferrite material.

[0014] In some embodiments, one end of the shielding sleeve near the connection end is disposed on the circuit board.

[0015] In some embodiments, one end of the shielding sleeve near the connection end is bonded to the circuit board;

[0016] And / or, the external insertion end of the interface body is exposed at one end of the shielding sleeve near the external insertion end.

[0017] Secondly, this utility model embodiment also provides an electronic device accessory, which adopts the following technical solution: the electronic device accessory includes a circuit board and the aforementioned electromagnetic interference-resistant data cable interface, wherein the data cable interface is electrically connected to the circuit board.

[0018] Thirdly, this utility model embodiment also provides an electronic device, which adopts the following technical solution: the electronic device includes a circuit board and the above-mentioned electromagnetic interference-resistant data line interface, and the data line interface is electrically connected to the circuit board.

[0019] Compared with the prior art, the electromagnetic interference-resistant data cable interface, electronic device accessories, and electronic devices provided by the embodiments of this utility model have the following advantages:

[0020] This electromagnetic interference-resistant data cable interface uses a shielding sleeve that passes directly through the external connector and is fitted onto the interface body. The shielding sleeve absorbs or suppresses electromagnetic radiation and / or noise generated during data transmission or charging / discharging. On one hand, the shielding sleeve's simple manufacturing process eliminates the need for complex production processes and frequent tool changes, simplifying production, reducing labor costs, and increasing yield, making it suitable for fully automated mass production. On the other hand, the data cable interface with the shielding sleeve has a smaller overall size, requiring no additional space. Furthermore, while suppressing electromagnetic interference, it ensures the integrity of the PD eye diagram data, reducing efficiency losses and meeting future energy efficiency standards, thus satisfying the requirements of modern electronic equipment. Attached Figure Description

[0021] To more clearly illustrate the solutions in this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model or corresponding prior art. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0022] Figure 1 This is a three-dimensional structural schematic diagram of an electromagnetic interference-resistant data line interface electrically connected to a circuit board in one example of this utility model;

[0023] Figure 2 yes Figure 1 A three-dimensional structural diagram of the shielding sleeve for a data cable interface that resists electromagnetic interference;

[0024] Figure 3 This is an example of the electromagnetic interference suppression effect of an anti-electromagnetic interference data line interface in this utility model; wherein, the red line represents the limit standard of the level, and the blue line represents the actual level of the anti-electromagnetic interference data line interface after the shielding sleeve is applied, in the frequency range of 30M to 1G.

[0025] Figure 4 This is a diagram showing the integrity of the PD eye diagram in an example of the electromagnetic interference resistance data line interface performance test of this utility model.

[0026] The labels in the attached diagram are as follows:

[0027] 100. Data cable interface; 200. Circuit board;

[0028] 1. Interface body; 11. Connecting end; 12. External plug-in end;

[0029] 2. Shielding sleeve; 21. Sleeve hole;

[0030] 3. Adhesive. Detailed Implementation

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. For example, terms such as “length,” “width,” “upper,” “lower,” “left,” “right,” “front,” “rear,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer” indicate orientations or positions based on the orientations or positions shown in the accompanying drawings and are merely for ease of description and should not be construed as limiting the invention.

[0032] The terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this utility model are intended to cover non-exclusive inclusion; the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish different objects, not to describe a specific order. "A plurality of" means two or more, unless otherwise explicitly specified.

[0033] In the description, claims, and accompanying drawings of this utility model, when an element is referred to as "fixed to," "mounted to," "set on," or "connected to" another element, it can be directly or indirectly located on that other element. For example, when an element is referred to as "connected to" another element, it can be directly or indirectly connected to that other element. When the term "and / or" is used, it means including three parallel solutions; for example, "Solution A and / or Solution B" includes Solution A, or Solution B, or a solution that satisfies both A and B.

[0034] Furthermore, the terms "embodiment," "implementation," "example," etc., used herein refer to specific features, structures, or characteristics described in connection with an embodiment that may be included in at least one embodiment of this utility model. These phrases appearing in various places throughout the specification do not necessarily refer to the same embodiment, nor are they independent or alternative embodiments mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0035] This utility model provides an electromagnetic interference-resistant data cable interface 100, which can be used in electronic devices and electronic device accessories. The data cable interface 100 described herein includes, but is not limited to, a Type-C interface. The electronic devices described herein include, but are not limited to, mobile phones, tablets, monitors, cameras, camcorders, headphone charging cases, medical devices, industrial cameras, etc. The electronic device accessories described herein include, but are not limited to, chargers, power banks, power strips, docking stations, data cables, card readers, Type-C headphones, etc.

[0036] like Figure 1 As shown, the electromagnetic interference-resistant data cable interface 100 includes an interface body 1 and a shielding sleeve 2. The interface body 1 has a connecting end 11 and an external plug-in end 12. The connecting end 11 of the interface body 1 is connected to the circuit board 200, and correspondingly, the external plug-in end 12 of the interface body 1 is used for external device insertion. Understandably, the data cable interface 100 is electrically connected to the circuit board 200 through the interface body 1. When the interface of an external device is plugged into the external plug-in end 12, it facilitates electrical conduction and data transmission with the external device.

[0037] In this embodiment, the shielding sleeve 2 is fitted onto the interface body 1. The shielding sleeve 2 is mainly used to absorb or suppress electromagnetic radiation and / or noise generated during data transmission or charging and discharging of the data cable interface 100. Exemplarily, after the interface body 1 is connected to the circuit board 200, the shielding sleeve 2 can be inserted into the interface body 1 from the external insertion end 12, so that the shielding sleeve 2 is finally fitted onto the interface body 1. Thus, by directly fitting the shielding sleeve 2 onto the interface body 1, the electromagnetic radiation and / or noise generated during data transmission or charging and discharging of the data cable interface 100 can be absorbed or suppressed by the shielding sleeve 2.

[0038] In other words, the data cable interface 100 may generate electromagnetic radiation and / or noise during data transmission, and may also generate electromagnetic radiation and / or noise during charging and discharging. The data cable interface 100 with the shielding sleeve 2 can absorb or suppress the electromagnetic radiation and / or noise generated by the shielding sleeve 2, thereby achieving the effect of anti-electromagnetic interference.

[0039] Understandably, compared to existing methods that use common-mode inductors for electromagnetic interference suppression, directly installing a shielding sleeve 2 over the interface body 1 offers several advantages. Firstly, the manufacturing process is simpler; simply placing the shielding sleeve 2 over the interface body 1 forms a new data cable interface 100 with electromagnetic interference resistance. This eliminates the need for frequent switching between multiple processes and specialized tools, such as wire winding, pin forming, and separate testing. Furthermore, it reduces labor costs, increases yield, and meets the requirements of intelligent and integrated production. Secondly, it ensures a smaller size for the data cable interface 100, requiring no additional space, and while achieving electromagnetic interference suppression, it also preserves PD eye diagram data (see [reference]). Figure 4 The integrity of the structure is maintained, which does not easily lead to efficiency loss. It can meet the requirements of the upcoming energy efficiency standards and is conducive to meeting the needs of modern electronic devices.

[0040] It should be noted that the photodetector (PD) eye diagram data mentioned here is a key test indicator used in optical communication and high-speed digital systems to evaluate signal integrity and transmission quality. It captures and analyzes the waveform of the optical signal received by the photodetector to graphically display the timing, noise, jitter, and other characteristics of the signal.

[0041] Please refer to Figure 4 The diagram shows the completeness of the PD eye diagram as presented by the data cable interface performance test. In this diagram, the blue part is within the yellow line. Only when this effect is the PD eye diagram complete. If the blue part reaches the yellow line or exceeds the yellow line, it means that the PD eye diagram is incomplete.

[0042] It should also be noted that, in order to achieve electromagnetic interference resistance in the shielding sleeve 2 and simplify the manufacturing process, the shielding sleeve 2 can be directly made of a target material with electromagnetic interference resistance. The target material mentioned here includes, but is not limited to, magnetic materials, magnetic alloy materials, and nanomaterials. No particular limitation is made on the target material, as long as it ensures that the shielding sleeve 2 has at least electromagnetic interference resistance.

[0043] In summary, compared with existing technologies, this electromagnetic interference-resistant data cable interface 100 has at least the following beneficial effects: The data cable interface 100 directly mounts the shielding sleeve 2 onto the interface body 1, thereby absorbing or suppressing electromagnetic radiation and / or noise generated during data transmission or charging / discharging. On the one hand, the manufacturing process of the shielding sleeve 2 is simple, eliminating the need for complex production processes and frequent switching of specialized tools, thus simplifying the production process, reducing labor costs, and improving yield, making it suitable for fully automated mass production. On the other hand, the data cable interface 100 with the shielding sleeve 2 has a smaller overall size, requiring no additional space. Furthermore, while suppressing electromagnetic interference, it ensures the integrity of the PD eye diagram data, reducing efficiency losses and meeting future energy efficiency standards, thus satisfying the requirements of modern electronic devices.

[0044] To enable those skilled in the art to better understand the present invention, the following will be described in conjunction with the appendix. Figures 1 to 4 The technical solutions of the embodiments of this utility model will be clearly and completely described below. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0045] In some embodiments, such as Figure 1 As shown, to improve the absorption or suppression effect of electromagnetic interference in the data cable interface 100, the inner wall of the shielding sleeve 2 is adapted to the outer wall of the interface body 1. This reduces the gap between the inner wall of the shielding sleeve 2 and the outer wall of the interface body 1, thereby reducing the risk of electromagnetic radiation generated by the data cable interface 100 leaking through this gap.

[0046] Similarly, in some embodiments, to improve the absorption or suppression effect of electromagnetic interference in the data cable interface 100, the cross-sectional shape of the inner wall of the shielding sleeve 2 is the same as the cross-sectional shape of the outer wall of the interface body 1. This facilitates a better fit between the inner wall of the shielding sleeve 2 and the outer wall of the interface body 1, thereby reducing the leakage of electromagnetic radiation generated by the data cable interface 100 through the shielding sleeve 2 and the interface body 1.

[0047] For example, such as Figure 2As shown, the shielding sleeve 2 has a sleeve hole 21 in the middle part. When the shielding sleeve 2 and the interface body 1 are fitted together, the outer insertion end 12 of the interface body 1 can be directly inserted into the sleeve hole 21 of the shielding sleeve 2 at the outer insertion end side, so that the shielding sleeve 2 can be fitted onto the interface body 1. When the outer wall of the interface body 1 has a concave and convex structure, the hole wall of the sleeve hole 21 of the shielding sleeve 2 can be adapted to the outer wall of the interface body 1, so as to realize the concave and convex fit between the shielding sleeve 2 and the interface body 1, thereby facilitating the close fitting of the shielding sleeve 2 and the interface body 1.

[0048] When the outer wall of the interface body 1 is a smooth wall, the hole shape of the sleeve hole 21 of the shielding sleeve 2 can be the same as the cross-sectional shape of the outer wall of the interface body 1. This also facilitates the fitting and connection of the shielding sleeve 2 and the interface body 1.

[0049] In some embodiments, to further improve the suppression effect of electromagnetic interference of the data line interface 100, the inner wall of the shielding sleeve 2 is attached to the outer wall of the interface body 1. That is, the shielding sleeve 2 can be made to fit tightly against the outer wall of the interface body 1 as much as possible to ensure that the shielding sleeve 2 and the interface body 1 are seamlessly connected, so as to reduce the probability of magnetic leakage from the joint between the two.

[0050] In some embodiments, to further ensure that the shielding sleeve 2 is compatible with the interface body 1 of the data cable interface 100, since the interface body 1 of the data cable interface 100 often adopts a semi-circular key-shaped structure, correspondingly, such as Figure 1 and Figure 2 As shown, the cross-sectional shape of the shielding sleeve 2 is a key-shaped ring with semi-circular ends.

[0051] For example, the hole 21 of the shielding sleeve 2 has a semi-circular key shape. Of course, in other embodiments, the hole 21 of the shielding sleeve 2 may have other suitable shapes, as long as it can ensure that the hole 21 is compatible with the interface body 1 of the data cable interface 100.

[0052] In some embodiments, to achieve electromagnetic shielding function and reduce production costs, the shielding sleeve 2 is made of magnetic material. Understandably, the shielding sleeve 2 is a magnetic sleeve. On the one hand, the high permeability and resistivity of the magnetic sleeve can effectively absorb and suppress high-frequency noise flowing through the data line interface 100, preventing it from propagating through the data line and forming radiated interference. On the other hand, because the magnetic sleeve has no parasitic capacitance parameters, it will not cause high-frequency attenuation, phase distortion, or resonance due to parasitic capacitance, thus helping to ensure the integrity of PD eye diagram data transmission.

[0053] Optionally, the shielding sleeve 2 is made of ferrite material. Understandably, because ferrite sleeves can suppress high-frequency noise and ferrite materials are relatively inexpensive, ferrite sleeves offer high cost-effectiveness, which helps reduce the production cost of the data cable interface 100 and is very suitable for automated mass production.

[0054] Of course, in practical applications, shielding sleeve 2 made of relatively expensive nanocrystalline alloy material or other suitable material can also be used. No special limitation is made here. The specific choice can be made according to the actual application scenario and other factors.

[0055] For example, such as Figure 3 As shown, Figure 3 This graph shows the electromagnetic interference suppression effect of a magnetic sleeve made of ferrite material used for shielding, tested in the 30MHz to 1GHz frequency range. In this graph, the red line represents the standard voltage level limit, and the blue line represents the test data curve of the actual voltage level at the data line interface. From... Figure 3 As can be seen, the blue line is always below the red line within the frequency test range, remaining within the limit standard. This means that the magnetic radiation of the improved data cable interface with a shielded magnetic sleeve meets the requirements.

[0056] In addition, from Figure 3 Three test points located at the peak can be selected. The test data corresponding to test points 1, 2, and 3 are shown in Table 1 below. As can be seen from Table 1, in the frequency range of 30 MHz to 1 GHz, the level of test point 1 is 32.33 dBμV / m, the level of test point 2 is 33.24 dBμV / m, and the level of test point 3 is 31.90 dBμV / m. The level fluctuation of the three test points is not large, and all are less than their respective level limits of 40 dBμV / m. That is, the magnetic radiation of the three test points meets the requirements.

[0057]

[0058] Table 1

[0059] In some embodiments, to improve the firmness and reliability of the shielding sleeve 2, such as... Figure 1 As shown, one end of the shielding sleeve 2 near the connecting end 11 is disposed on the circuit board 200. Optionally, the end of the shielding sleeve 2 near the connecting end 11 is bonded to the circuit board 200.

[0060] For example, after the connection end 11 of the interface body 1 of the data cable interface 100 is electrically connected to the circuit board 200, the shielding sleeve 2 can be inserted into the interface body 1 from the external insertion end 12 so that the shielding sleeve 2 is fitted onto the interface body 1. Then, the end of the shielding sleeve 2 near the connection end 11 is bonded to the circuit board 200 with adhesive such as glue or solid glue so that the shielding sleeve 2 is fixedly fitted onto the interface body 1.

[0061] Of course, in other embodiments, the shielding sleeve 2 can also be fixed in other ways to keep its relative position with the interface body 1 fixed.

[0062] In some embodiments, to facilitate avoiding other components around the external insertion end 12 of the interface body 1, the external insertion end 12 of the interface body 1 is exposed at the end of the shielding sleeve 2 near the external insertion end 12. That is, the end of the shielding sleeve 2 near the external insertion end 12 is not flush with the external insertion end 12 of the interface body 1, so that the external insertion end 12 of the interface body 1 is exposed.

[0063] Based on the data cable interface 100 described above, this utility model embodiment also provides an electronic device accessory, wherein the electronic device accessory includes a circuit board 200 and the aforementioned data cable interface 100, and the data cable interface 100 is electrically connected to the circuit board 200.

[0064] The electronic device accessories mentioned herein include, but are not limited to, chargers, power banks, power strips, docking stations, data cables, card readers, Type-C earphones, etc.

[0065] In summary, compared with existing technologies, this electronic device accessory has at least the following advantages: By employing the aforementioned data cable interface 100, this electronic device accessory can suppress or shield generated radiated or conducted noise. The manufacturing process is simple, labor costs are low, and the yield rate is high. Therefore, it helps ensure the high cost-effectiveness of the electronic device accessory and is suitable for fully automated mass production to meet the requirements of intelligent and integrated production. Furthermore, because the data cable interface 100 is small in size, it requires no additional space. While suppressing electromagnetic interference, it also ensures the integrity of PD eye diagram data, which helps reduce efficiency losses. Therefore, it facilitates energy-saving and miniaturized design of electronic device accessories and helps meet the personalized needs of modern electronic device accessories.

[0066] Based on the data cable interface 100 described above, this utility model embodiment also provides an electronic device, wherein the electronic device includes a circuit board 200 and the aforementioned electromagnetic interference resistant data cable interface 100, and the electromagnetic interference resistant data cable interface 100 is electrically connected to the circuit board 200.

[0067] The electronic devices mentioned herein include, but are not limited to, mobile phones, tablets, monitors, cameras, camcorders, headphone charging cases, medical devices, industrial cameras, etc.

[0068] In summary, compared with existing technologies, this electronic device has at least the following advantages: By employing the aforementioned electromagnetic interference-resistant data line interface 100, it can suppress or shield generated radiated or conducted noise. The manufacturing process is simple, labor costs are low, and the yield rate is high. Therefore, it helps ensure the high cost-effectiveness of the electronic device and is suitable for fully automated mass production to meet the requirements of intelligent and integrated production. Furthermore, because the data line interface 100 is small in size, it requires no additional space. While suppressing electromagnetic interference, it also ensures the integrity of PD eye diagram data, which helps reduce efficiency losses. Therefore, it facilitates energy-saving and miniaturized design of the electronic device and helps meet the personalized needs of modern electronic devices.

[0069] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A data cable interface resistant to electromagnetic interference, characterized in that, include: The interface body has a connection end and an external plug-in end; the connection end is connected to the circuit board, and the external plug-in end is used for external devices to be plugged in. and A shielding sleeve is fitted onto the interface body; the shielding sleeve is used to absorb or suppress electromagnetic radiation and / or noise generated during the data transmission process or charging and discharging process of the data line interface.

2. The electromagnetic interference resistant data cable interface according to claim 1, characterized in that, The inner wall of the shielding sleeve is adapted to the outer wall of the interface body; And / or, the cross-sectional shape of the inner wall of the shielding sleeve is the same as the cross-sectional shape of the outer wall of the interface body.

3. The electromagnetic interference resistant data cable interface according to claim 2, characterized in that, The shielding sleeve has a cross-sectional shape of a key-shaped ring with semi-circular ends.

4. The electromagnetic interference resistant data cable interface according to claim 1, characterized in that, The inner wall of the shielding sleeve is attached to the outer wall of the interface body.

5. The electromagnetic interference resistant data cable interface according to claim 1, characterized in that, The shielding sleeve is made of magnetic material.

6. The electromagnetic interference resistant data cable interface according to claim 5, characterized in that, The shielding sleeve is made of ferrite material.

7. The electromagnetic interference resistant data cable interface according to any one of claims 1 to 6, characterized in that, The end of the shielding sleeve closest to the connection end is disposed on the circuit board.

8. The electromagnetic interference resistant data cable interface according to claim 7, characterized in that, The end of the shielding sleeve near the connection end is bonded to the circuit board; And / or, the external insertion end of the interface body is exposed at one end of the shielding sleeve near the external insertion end.

9. An electronic device accessory, characterized in that, The electronic device accessory includes a circuit board and an electromagnetic interference resistant data cable interface as described in any one of claims 1 to 8, wherein the data cable interface is electrically connected to the circuit board.

10. An electronic device, characterized in that, The electronic device includes a circuit board and an electromagnetic interference resistant data line interface as described in any one of claims 1 to 8, wherein the data line interface is electrically connected to the circuit board.

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