Universal serial bus (USB) hub capable of accurately early warning

Abstract

The invention belongs to the technical field of concentrators, and particularly relates to a USB concentrator capable of accurate early warning, which comprises a flame-retardant shell, a plurality of expansion bins are uniformly arranged at the upper end of the interior of the flame-retardant shell, an external plug is arranged at one end of the flame-retardant shell, and the external plug is connected with a circuit board in the flame-retardant shell through a data line. The USB expansion device is characterized by further comprising a plurality of USB expansion joint assemblies, the plurality of USB expansion joint assemblies are assembled in the plurality of expansion bins respectively, and each USB expansion joint assembly comprises a metal shell, an insulating plate and an insulating base. When the USB expansion connector assembly is used, the heating phenomenon in the USB expansion connector assembly can be early warned, when a user does not process the heating phenomenon, power supply to external equipment can be stopped, equipment damage is avoided, and meanwhile, after the user finds the heating phenomenon, the device can be kept to work normally according to the use requirement.

Description

technical field [0001] The invention belongs to the technical field of hubs, and in particular relates to a USB hub capable of accurate early warning. Background technique [0002] A USB hub, also known as a USB splitter, refers to a device that can extend a USB interface into multiple independent USB interfaces and use these interfaces at the same time. It is a very common expansion device. A common USB interface usually includes four wires, which are arranged in turn as power wire pins, data wire positive pins, data wire negative pins, and ground wire pins. The external device is powered, and data can be transmitted to the external device through the positive pin of the data cable and the negative pin of the data cable. When the device is in use, after connecting the PC and the external device through the USB hub, the expansion interface on the USB hub will generate heat under the following conditions: [0003] 1. After the USB interface on the external device is used fo...

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Problems solved by technology

[0003] 1. After the USB interface on the external device has been used for a long time, the USB connector is repeatedly bent, causing the connection to become loose, and there is a short circuit inside. After connecting to the PC through the USB hub, the USB connector of the external device will heat up. After the heat is transferred, the USB extension The temperature inside the interface will also rise accordingly, and this heating phenomenon is caused by the failure of the external device;

[0004] 2. After the external device is connected to the PC through the USB hub, and the long-term data transmission will cause the temperature in the USB expansion interface to rise, this heating phenomenon is a normal physical phenomenon;

[0005] 3. When repeatedly plugging and unplugging the external device, after the USB connector of the external device is soaked in water or metal chips are mixed in the USB expansion interface, after the external device is connected to the PC terminal through the USB hub and powered on, it will cause a short circuit inside the USB expansion interface, and then Cause the USB expansion interface to heat up, and in severe cases, it will cause damage to the South Bridge chip on the PC side. This heating phenomenon is caused by a fault.

[0006] As mentioned above, the current USB hub will generate heat due to various reasons during use, and the conventional heat is actually within the normal range and will not cause damage to the device, but some external influences cause The heating phenomenon is likely to cause damage to the equipment, and the USB hub is also equipped with some protection mechanisms, such as integrating a protection circuit on the circuit board to achieve high temperature power failure, etc. After the temperature reaches the protection value, the protection circuit will Directly cut off the line to achieve the purpose of protection. The above method is a relatively conventional protection method at present, but in fact, in the process of use, some conventional phenomena will also cause the internal temperature of the hub to be high for a short time. It can also be used normally, so there are actually some big disadvantages in the conventional way, especially when the hub is connected to an external reading device, if the power is cut off rashly, it is easy to cause data terminals or even data loss.

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