CN213211015U

CN213211015U - Multi-USB interface line concentrator

Info

Publication number: CN213211015U
Application number: CN202022011756.XU
Authority: CN
Inventors: 展志伟
Original assignee: Shenzhen Lipusen Technology Co ltd
Current assignee: Shenzhen Lipusen Technology Co ltd
Priority date: 2020-09-15
Filing date: 2020-09-15
Publication date: 2021-05-14
Anticipated expiration: 2030-09-15

Abstract

The utility model discloses a many USB interfaces hub device, it includes the casing, is located host computer and expander circuit of casing, wherein, the expander circuit includes main control chip, cascade circuit and a plurality of USB port, the cascade circuit includes a plurality of shunt chips, the host computer is connected to the main control chip input, and a plurality of shunt chips are connected respectively to a plurality of outputs of this main control chip, and each shunt chip is connected with a plurality of USB ports. Compared with the prior art, the utility model discloses host computer and expander circuit connection expand into a plurality of USB ports that can concurrent work simultaneously with a USB port with the host computer among the many USB interface hub device, promptly the utility model discloses collect host computer and many mouthfuls of concentrators as an organic whole, simple structure and be convenient for operate, the user can insert a plurality of USB port equipment simultaneously, but a plurality of equipment simultaneous working can accelerate office efficiency, practices thrift the cost.

Description

Multi-USB interface line concentrator

Technical Field

The utility model relates to an electronic circuit technical field, more specifically relate to a many USB interface line concentration device.

Background

Universal Serial Bus (USB) is a Serial Bus standard for connecting computer systems and external devices, and is also a technical specification of input/output interfaces, and because of its characteristics of hot plug and simple interface, it is widely used in information communication products such as personal computers and mobile devices, and is extended to other related fields such as video equipment, digital televisions (set-top boxes), game machines, and the like.

The general computer is generally configured with 4 standard USB interfaces (behind the case) on the mainboard, and is generally configured with 2 USB interfaces on the front panel of the case, so the general computer is generally only 6-8 USB interfaces, however, with the rapid development of computer hardware, the number of peripheral devices is increasing, the USB interfaces are widely used by products such as keyboards, mice, modems, printers, scanners, digital cameras, mobile phones, law enforcement recorders, driving recorders, etc., the USB interfaces of the current home computer cannot meet the user requirements, and the financial departments of some medium and large enterprises and public institutions can use a plurality of U shields of different banks, and the computer can only recognize one U shield at a time, so the user needs to continuously plug and replace the required different U shields, which is very inconvenient.

Therefore, it is desirable to provide a multi-USB hub device to solve the above-mentioned drawbacks.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a many USB interface line concentration device is provided.

In order to solve the technical problem, the utility model provides a many USB interfaces line concentration device, line concentration device includes the casing, is located host computer and expander circuit in the casing, wherein, expander circuit includes main control chip, cascade circuit and a plurality of USB port, the cascade circuit includes a plurality of shunt chips, the host computer is connected to the main control chip input, and a plurality of shunt chips are connected respectively to a plurality of outputs of this main control chip, and each shunt chip is connected with a plurality of USB ports.

The further technical scheme is as follows: the line concentration device further comprises a power supply circuit, the power supply circuit comprises an AC/DC constant voltage circuit and a DC/DC voltage reduction circuit which are sequentially connected, the input end of the AC/DC constant voltage circuit is connected with the output end of the alternating current power supply to supply power for the host and supply power for the expander circuit through the DC/DC voltage reduction circuit.

The further technical scheme is as follows: the power supply circuit further comprises an overcurrent protection circuit, the overcurrent protection circuit comprises a plurality of overcurrent protection chips, and each overcurrent protection chip is connected between the DC/DC voltage reduction circuit and a USB port.

The further technical scheme is as follows: the hub device also comprises a port control circuit which is connected with the output end of a shunt chip and is connected with an overcurrent protection circuit so as to control the power-on and power-off of the USB port according to an instruction from a host computer, thereby carrying out upper disk or lower disk control on the USB port.

The further technical scheme is as follows: the port control circuit comprises a USB-to-serial port chip and an MCU, the USB-to-serial port chip is connected between the output end of a shunt chip and the MCU, and a plurality of output ends of the MCU are respectively connected with a plurality of overcurrent protection chips so as to turn on or turn off power supply to a plurality of USB ports.

The further technical scheme is as follows: the model of the main control chip is FE2.1_ QFP 48.

The further technical scheme is as follows: the model of the shunt chip is FE2.1_ QFP 48.

The further technical scheme is as follows: the number of the USB ports is 48.

The further technical scheme is as follows: the input end of the main control chip is connected with the host through a data line.

Compared with the prior art, the utility model discloses host computer and expander circuit connection expand into a plurality of USB ports that can concurrent work simultaneously with a USB port with the host computer among the many USB interface hub device, promptly the utility model discloses collect host computer and many mouthfuls of concentrators as an organic whole, simple structure and be convenient for operate, the user can insert a plurality of USB port equipment simultaneously, but a plurality of equipment simultaneous working can accelerate office efficiency, practices thrift the cost.

Drawings

Fig. 1 is a schematic diagram of a circuit structure of a multi-USB hub device according to an embodiment of the present invention.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more clearly understood by those skilled in the art, the present invention will be further described with reference to the accompanying drawings and examples.

Referring to fig. 1, fig. 1 is a schematic diagram of a circuit structure of a multi-USB interface hub device 1 according to an embodiment of the present invention. In some embodiments, the multi-USB hub device 1 includes a housing, a host 10 and an expander circuit, where the expander circuit includes a main control chip U2, a cascade circuit and a plurality of USB ports 204, the cascade circuit includes a plurality of splitter chips, an input end of the main control chip U2 is connected to the host 10, a plurality of output ends of the main control chip U2 are respectively connected to the plurality of splitter chips, and each splitter chip is connected to the plurality of USB ports 204. In this embodiment, the input terminal of the main control chip U2 is connected to the host 10 through a data line. Based on the above design, the utility model discloses host computer 10 expands into a plurality of USB ports 204 that can work simultaneously with expander circuit connection in order to with USB port 204 of host computer 10 among the many USB interface hub device 1, promptly the utility model discloses collect host computer 10 and many mouthfuls of concentrators as an organic whole, simple structure and be convenient for operate, the user can insert a plurality of USB port equipment simultaneously, but a plurality of equipment simultaneous working can accelerate office efficiency, practices thrift the cost.

In this embodiment, the main control chip U2 is a USB HUB chip with a model number of FE2.1_ QFP48 and an MTT (Multiple Transaction Translator) architecture, the chip is a USB2.0 high-speed 1-to-7 HUB controller, and a splitter chip is connected to each downstream port of the main control chip U2 for parallel translation, in this embodiment, the splitter chip is also a chip with a model number of FE2.1_ QFP48, and 7 downstream FE2.1_ QFP48 chips constitute a cascade architecture of two-stage chips 7 × 7, so as to achieve the purpose of total 48 downstream parallel USB2.0 ports, that is, the host 10 is connected to the main control chip U2 through a data line, and 7 channels including CH1, CH2, CH3, CH4, CH5, CH6, and CH7 are expanded through the main control chip U8, and 7 channels including CH1, CH2, CH3, CH4, CH5, CH6, CH 4624, CH5, CH 4624, CH 5923, CH 599, CH 9, CH 469, CH 5923, CH 24, CH 9 CH 5923, and CH 9 CH3, U4, U5, U6, U7, U8 and U9, 7 USB channels are expanded from each shunt chip, so that 48 downstream USB ports 204 of 7x7 (one of the channels is connected with a port control circuit) are completed, the 48 ports are in a parallel structure, and due to the MTT structure of the chips, when all the ports work simultaneously, signal blocking is not easy to generate.

In some embodiments, the hub device 1 further includes a power supply circuit, the power supply circuit includes an AC/DC constant voltage circuit 301 and a DC/DC voltage-reducing circuit 302 connected in sequence, an input end of the AC/DC constant voltage circuit 301 is connected to an output end of an AC power supply to supply power to the host 10, and the DC/DC voltage-reducing circuit 302 is used to supply power to the expander circuit. Preferably, the AC/DC constant voltage circuit 301 is an existing switching power supply circuit, and is configured to convert an alternating current into a constant-voltage direct current, that is, 220V commercial power is converted into a 12V direct current through the AC/DC constant voltage circuit 301, one path of the commercial power supplies power to the host 10 in the device 1, and the other path of the commercial power is converted into a 5V direct current through the DC/DC voltage reduction circuit 302 and supplies the 5V direct current to the expander circuit.

In some embodiments, the power supply circuit further includes an overcurrent protection circuit, the overcurrent protection circuit includes a plurality of overcurrent protection chips 203, and each overcurrent protection chip 203 is connected between the DC/DC voltage reduction circuit 302 and a USB port 204. In this embodiment, 48 overcurrent protection chips 203 are provided, and the overcurrent protection chips 203 are well known and commonly used by those skilled in the art and are not described herein again.

Further, the line concentrator 1 further includes a port control circuit, the port control circuit is connected to an output end of a shunt chip and connected to an overcurrent protection circuit, so as to control power-on and power-off of the USB port 204 according to an instruction from the host 10, so as to perform upper disk control or lower disk control on the USB port 204, specifically, the port control circuit includes a USB serial-to-serial port chip U10 and an MCU U19, the USB serial-to-serial port chip U10 is connected between an output end of the shunt chip and the MCU U19, and a plurality of output ends of the MCU 19 are respectively connected to a plurality of overcurrent protection chips 203, so as to turn on or turn off power supply to the plurality of USB ports 204. Based on the design, a USB interface of a shunt chip is connected into a USB-to-serial port chip U10 and is converted into a universal serial port through a USB-to-serial port chip U10 to be connected into an MCU U19 (single chip microcomputer), a plurality of IO ports of the MCU U19 are respectively connected with a plurality of overcurrent protection chips 203, the output level of the IO port of the MCU U19 is configured on the host 10 through a program, power output of a plurality of USB ports 204 can be opened and closed, and therefore control of the downlink USB port 204 is achieved, namely independent disc loading and disc unloading control (equivalent to manual plugging and unplugging of USB equipment) can be carried out on the downlink USB port 204 of the device 1 at the local host 10 end or through network remote.

As can be understood from the figure, in this embodiment, the multi-USB interface hub device 1 converts the commercial power AC220V into DC12V, and then converts the DC 12/DC voltage-reducing circuit 302 into DC5V to be output to the expander circuit, so as to supply power to the main control chip U2, the shunt chip, and the downstream USB port 204, an overcurrent protection chip 203 is configured in each USB port 204, when the external device has a fault and an overload (such as a short circuit of a USB connection line), the overcurrent protection chip 203 acts to cut off the output current, so as to protect the device, when the overload or short circuit fault is removed, the overcurrent protection chip 203 releases the circuit to automatically recover power supply, after the port control circuit is added, and when the single chip microcomputer (MCU U19) controls the IO ports (IO1-IO48) to be configured to a low level, the overcurrent protection chip 203 connected to the low level switches off the current output, so as to implement the output control of the port power supply.

To sum up, the utility model discloses host computer and expander circuit connection are in order to expand into a plurality of USB ports that can work simultaneously with a USB port of host computer among the many USB interface hub device, and keep USB port stable performance not blockking, promptly the utility model discloses collect host computer and many mouthfuls of concentrators as an organic whole, simple structure and be convenient for operate, the user can insert a plurality of USB port equipment simultaneously, but a plurality of equipment simultaneous workings can be used to police trade law enforcement record appearance data acquisition station, bank U shield burn in batches ID, education trade electronic classroom centralized management student's panel computer and tax system U-KEY centralized management data acquisition's field to accelerate office efficiency, practice thrift the cost, and can control and manage this device 48 ports at local host computer or through LAN mouth connecting network remote realization through port control circuit.

The foregoing is considered as illustrative of the preferred embodiments of the invention and is not intended to limit the invention in any way. Various equivalent changes and modifications can be made on the basis of the above embodiments by those skilled in the art, and all equivalent changes and modifications within the scope of the claims should fall within the protection scope of the present invention.

Claims

1. The utility model provides a many USB interface line concentration device which characterized in that: the concentrator device includes the casing, is located host computer and expander circuit of casing, wherein, the expander circuit includes main control chip, cascade circuit and a plurality of USB port, cascade circuit includes a plurality of shunt chips, the host computer is connected to the main control chip input, and a plurality of shunt chips are connected respectively to a plurality of outputs of this main control chip, and each shunt chip is connected with a plurality of USB ports.

2. The multi-USB interface hub device of claim 1, wherein: the line concentration device further comprises a power supply circuit, the power supply circuit comprises an AC/DC constant voltage circuit and a DC/DC voltage reduction circuit which are sequentially connected, the input end of the AC/DC constant voltage circuit is connected with the output end of the alternating current power supply to supply power for the host and supply power for the expander circuit through the DC/DC voltage reduction circuit.

3. The multi-USB interface hub device of claim 2, wherein: the power supply circuit further comprises an overcurrent protection circuit, the overcurrent protection circuit comprises a plurality of overcurrent protection chips, and each overcurrent protection chip is connected between the DC/DC voltage reduction circuit and a USB port.

4. The multi-USB interface hub device according to claim 3, wherein: the hub device also comprises a port control circuit which is connected with the output end of a shunt chip and is connected with an overcurrent protection circuit so as to control the power-on and power-off of the USB port according to an instruction from a host computer, thereby carrying out upper disk or lower disk control on the USB port.

5. The multi-USB interface hub device of claim 4, wherein: the port control circuit comprises a USB-to-serial port chip and an MCU, the USB-to-serial port chip is connected between the output end of a shunt chip and the MCU, and a plurality of output ends of the MCU are respectively connected with a plurality of overcurrent protection chips so as to turn on or turn off power supply to a plurality of USB ports.

6. The multi-USB interface hub device of claim 1, wherein: the model of the main control chip is FE2.1_ QFP 48.

7. The multi-USB interface hub device of claim 1, wherein: the model of the shunt chip is FE2.1_ QFP 48.

8. The multi-USB interface hub device according to claim 7, wherein: the number of the USB ports is 48.

9. The multi-USB interface hub device of claim 1, wherein: the input end of the main control chip is connected with the host through a data line.