一种串口功能的USB连接器及智能终端

By setting independent pins and a reverse diode on the USB connector of the smart terminal, serial port debugging can be achieved without disassembling the casing, which solves the problems of easy equipment damage and high skill requirements in the existing technology, and improves debugging efficiency and equipment protection.

CN224520225UActive Publication Date: 2026-07-17西安卓华联盛科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
西安卓华联盛科技有限公司
Filing Date
2025-08-20
Publication Date
2026-07-17

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Abstract

本实用新型公开了一种串口功能的USB连接器及智能终端，涉及电子产品技术领域。本申请所述串口功能的USB连接器包括连接器外壳以及连接器接触件，所述连接器接触件上设置有多个分别独立接线的引脚，所述引脚包括电源线引脚VCC、I D信号线引脚、D+引脚、D‑引脚以及接地GND引脚，其中，所述电源线引脚VCC悬空，所述I D信号线引脚悬空，所述D+引脚串联第一反向二极管并连接一串口主控芯片CPU的UART RX引脚，所述D‑引脚串联第二反向二极管并连接一串口主控芯片CPU的UART TX引脚。本申请在进行串口调试时无需对智能终端进行拆解外壳，调试操作简易，且环境适应性强，极大提高串口调试效率。
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Claims

1. A USB connector with serial port functionality, characterized by, The connector includes a connector housing and connector contacts. The connector contacts have multiple independently wired pins, including a power supply pin (VCC), an ID signal pin, a D+ pin, a D- pin, and a ground pin (GND). The power supply pin (VCC) is left floating, the ID signal pin is left floating, the D+ pin is connected in series with a first reverse diode and connected to the UART RX pin of a serial port control chip CPU, and the D- pin is connected in series with a second reverse diode and connected to the UART TX pin of a serial port control chip CPU.

2. The USB connector of claim 1, wherein, The first and second reverse diodes are switching diodes.

3. The USB connector for serial port functionality of claim 2, wherein, The first and second reverse diodes are model number 1N4148.

4. The USB connector for serial port functionality of claim 1, wherein, The grounding GND pin is connected to the connector housing or directly to the shielding wire.

5. A USB connector for serial port functionality according to any of claims 1-4, characterized in that, It further includes a voltage regulator and filter circuit, which includes a Schottky diode and a low-pass filter.

6. The USB connector for serial port functionality of claim 5, wherein, The Schottky diode includes a first Schottky diode and a second Schottky diode; the low-pass filter includes a first low-pass filter and a second low-pass filter; one end of the first Schottky diode is connected to the D+ pin, and the other end is grounded; one end of the second Schottky diode is connected to the D- pin, and the other end is grounded; one end of the first low-pass filter C13 is connected to the D- pin, and the other end is grounded; the second low-pass filter C14 is connected to the D+ pin, and the other end is grounded.

7. The USB connector for serial port functionality of claim 5, wherein, The connector housing has textual function markings.

8. The USB connector with serial port function as described in claim 5, characterized in that, The low-pass filter has a capacitance of 33pF.

9. A smart terminal, characterized by It includes a main control chip CPU and a USB connector with serial port function as described in any one of claims 1-8.

10. The intelligent terminal of claim 9, wherein, The smart terminal has a slot on its outer casing, and the USB connector with serial port function is located in the slot.