CN204809565U - USB concentrator - Google Patents

Abstract

The utility model discloses a USB hub, including a control chip, a switching switch, a host-specific connector/line, and a mobile device-specific connector/line, wherein the control chip has an uplink port, a first downlink port, and three second downlink ports; the uplink port is connected to the host, the first downlink port is used as a mobile device-specific port, and the second downlink port is connected to a female connector matched with a peripheral device; the uplink port and the downlink port of the control chip are switched between the host and the peripheral device through the switching switch, so that the peripheral device can be used as a slave device or a master device. The power supply end of the control chip is connected to the switching switch, and then powered by a computer, so that the control chip and the connection with the mobile device can be disconnected and restarted during the switching process; the reset end of the control chip is also connected to the contact of the switching switch, and when the power supply end is disconnected, the reset end is grounded; when the power supply end is reconnected, the reset end is disconnected from the ground end.

Description

usb hub

Technical field:

The utility model relates to the technical field of computer peripherals, in particular to a USB hub which can switch a mobile device and connect to an uplink port or a downlink port.

Background technique:

As shown in Figure 1: a general USB hub is used as a bridging tool between PC and peripheral devices, and has an uplink port (UpstreamPort/USport) 11, a first downlink port (DownstreamPort/DSport) 12, and three second downlink ports 13, wherein a PC is connected to the uplink port 11 as a master device, and a keyboard and a mouse are connected to the first downlink port 12 and the second downlink port 13 as slave devices.

With the development of smart phones, they have been used only as USB flash drives in the past, and now they are almost used as a low-end computer; this extends the need to connect peripheral devices. However, if you want to connect so many peripheral devices, you will have the problem of frequent plugging and unplugging; especially the general desktop computer already has many peripheral devices, if you want to separate these peripheral devices between the desktop computer and mobile It will be very troublesome and more inconvenient;

Although the existing KVM device is used as a peripheral device sharer between two hosts, KVM cannot use a mobile device as a USB flash drive of a desktop computer, so an appropriate bridging method must be found.

Utility model content:

The purpose of this utility model is to provide a new USB hub for the deficiencies of the existing technology, which can use the mobile device as the U disk of the host, and can also transfer the peripheral devices to the mobile device to achieve peripheral The purpose of resource sharing.

In order to achieve the above object, a new type of USB hub of the present invention includes one or two control chips, a switch, a dedicated connector/line for a host, and a dedicated connector/line for a mobile device, wherein the control chip has an uplink port, a first downlink port and three second downlink ports; the uplink port is connected to the host, the first downlink port is used as a dedicated port for mobile devices, and the second downlink port is connected to a female connector that cooperates with peripheral devices; The uplink port and the first downlink port of the control chip are switched between the host computer and the peripheral device through a switch (20), so that the peripheral device can be used as a slave device or as a master device;

The power terminal of the control chip is connected to the switch, and then powered by the computer, so that the connection between the control chip and the mobile device can be disconnected and restarted during the switching process; the reset terminal of the control chip is also connected to the contact of the switch. After the power terminal is disconnected, the reset terminal is grounded; when the power terminal is reconnected, the reset terminal is disconnected from the ground terminal.

As a preference of the above technical solution, the reset terminal and the power supply terminal of the control chip are connected to different contacts of the same switch.

As a preference of the above technical solution, the reset terminal of the control chip is connected to another independent electronic switch circuit, and the operation of the independent electronic switch circuit is synchronized with the switching action of the switch at the power supply end.

As a preference for the above technical solution, the switch can also have a contact point connected to the identification line in the special connector/line of the mobile device and the special connector/line of the host computer, by switching whether it is grounded, to change the USB2.0 OTG device The master-slave state of the device, or changing the series resistance value, makes the peripheral equipment change the corresponding state.

As an optimization of the above technical solution, the hub has two control chips, and the switch switches the power supply to the power supply end of the control chip, so that only one hub chip operates at the same time; the second downlink ports of the two hubs are connected in parallel, Commonly connected to a female connector that cooperates with peripheral devices, the first downlink port of the control chip can be connected to a host with a USB3.1 interface, or not to be connected to the host.

As a preference for the above technical solution, the switch is a two-stage toggle switch with two rows of 6/12 pin points, or a dial switch, or a self-locking switch, or is composed of a light touch switch, a logic IC and a switch triode. Composed of electronic switching circuits.

As a preference of the above technical solution, the switch is a two-stage toggle switch with more than two rows of 18 pin points, an uplink port, a first downlink port, a host dedicated connector/line, a mobile device dedicated connector/ The D+D- circuits of the four lines are all connected to the switch. When the switch connects the D+D- circuit of the uplink port with the special connector/line of the mobile device, the D+D- circuit of the uplink port and the host The dedicated connector/line is disconnected. When the switch connects the D+D- circuit of the uplink port with the dedicated connector/line of the host, the dedicated connector/line of the mobile device is connected to the first downlink port dedicated to the mobile device. D+D-circuit Unicom; the switch has a pin group connected to the identification end of USB3.1 or the USB2.0OTGID end, by switching whether to ground, to change the master-slave state of the USB2.0OTG device, or to change the series resistance value, so that the surrounding The device changes state accordingly.

As a preference of the above technical solution, the switch has a contact connected to the identification terminal of the control chip, and by changing the communication state with the identification terminal, the uplink port connected to the host becomes a downlink port through the software operation of the control chip itself. port, and the first downlink port connected to the mobile device becomes an uplink port, switch the uplink/downlink status of the two ports and whether the OTGID terminal is grounded or not to change the master-slave status of the mobile device.

As an optimization of the above technical solution, the hub has two special connectors for mobile devices, one is USB2.0OTG specification, and its ID terminal corresponds to the switch control ground contact, and the other is USB3.1OTGTypeC specification, and its identification terminal corresponds to The resistive contact of the toggle switch has sliding doors at the front of the two connectors so that only one line can be connected at a time.

As a preference of the above technical solution, the USB hub is integrated with the keyboard and placed inside the keyboard, and its switching switch (20) is arranged on the surface of the keyboard.

The beneficial effects of the utility model are: it can be aimed at the mobile device/USB hub/host connection system, and the mobile device can be used as a U disk when the host is in the power-on state, and the peripheral devices can also be transferred to the mobile device for use to reach the peripheral For the purpose of resource sharing, there is no need for cumbersome plugging.

Description of drawings:

Below in conjunction with accompanying drawing, the utility model is further described:

Fig. 1 is the structural representation of existing design;

Fig. 2 is the structural representation of the utility model embodiment one;

Fig. 3 is the structural representation of the second embodiment of the utility model;

Fig. 4 is the structural representation of the utility model embodiment three;

Fig. 5 is a schematic structural view of Embodiment 4 of the utility model;

Fig. 6 is a schematic structural view of Embodiment 5 of the present utility model;

Fig. 7 is a schematic structural view of Embodiment 6 of the present utility model;

Fig. 8 is a schematic structural diagram of Embodiment 7 of the present utility model;

Fig. 9 is a schematic structural diagram of Embodiment 8 of the present utility model.

Detailed ways:

Figure 2 is a schematic diagram of Embodiment 1 of the present utility model, the USB hub includes a control chip 10, a switch 20, a host dedicated connector/line 40, and a mobile device dedicated connector/line 50, wherein the control chip 10 has One uplink port 11, one first downlink port 12 and three second downlink ports 13, wherein, the first downlink port 12 is used as a dedicated downlink port for mobile equipment, and the second downlink port 13 is connected to a female bus that cooperates with peripheral equipment. seat connector; the D+D-circuits of the uplink port 11, the first downlink port 12, the host dedicated connector/line 40, and the mobile device dedicated connector/line 50 are all connected to the switch 20; when the switch 20 When connecting the D+D-circuit of the uplink port 11 with the special connector/line 50 of the mobile device, the D+D-circuit of the uplink port 11 is disconnected from the dedicated connector/line 40 of the host; When the D+D-circuit of the uplink port 11 is connected with the host dedicated connector/line 40, the mobile device-specific connector/line 50 is connected with the D+D-circuit of the first downlink port 12 dedicated for the mobile device.

The host computer and the power supply of the mobile phone are connected in parallel, and connected to the switch 20 after the step-down regulator 80; the power terminal 15 of the control chip 10 is connected to the switch 20, and then supplies power through the computer interface 40, so that the control chip and the The connection to the mobile device can be restarted.

In order to avoid residual data when cutting off, causing the speed to decrease after restarting, the reset terminal of the control chip is connected to another independent electronic switch circuit, and the independent electronic switch circuit operates synchronously with the switching action of the power supply terminal switch. In this embodiment, the independent electronic switch circuit 110 is a logic control IC. When the power terminal 15 is cut off, the independent electronic switch circuit 110 grounds the reset terminal 16 to clear data. When the power terminal 15 is reconnected, the reset terminal 16 is no longer grounded.

In order to meet the needs of some mobile phones, the identification end of the special connector/line 50 for mobile equipment must be connected in series with resistors of different resistance values, so as to automatically change the state. Therefore, the switch 20 is a two-stage toggle switch with two rows of 18 pins, and two sets of switch pins are added; one set (A2/B2/C2) is used to switch the identification port 51 and connect resistors with different resistances in series.

Another set of switching switches 20 (A1/B1/C1) can be connected to two LED status indicators, or connected to an image switching IC.

The difference between the embodiment shown in Fig. 3 and the first embodiment is that the host computer (such as a notebook computer with ARM architecture) is also a USB3.1 Type C interface, and also has an identification port 41, so it can also be used as a slave device; another set of switching switches 20 (A1/B1/C1) is also connected to two resistors with different resistance values, and the resistance in series with the switch (A2/B2/C2) presents the opposite configuration. When switching the host as the master device, C1 is connected to R1 , C2 is connected to R2; when the mobile phone is switched as the master device, A1 is connected to R2, and A is connected to R1.

Embodiment 3 shown in Figure 4 is different from the previous example in that: Embodiment 1 and Example 2 are still applied to mobile phones with USB3. The third embodiment is aimed at the mobile phone with USB2.0 OTG function, and the master-slave state is switched by whether the ID terminal 51 is grounded at the switch or not.

One of the switching pins is used to connect to the shielded wire of the special connector/wire 70 of the mobile device, or an independent core wire, and short-circuit with the ID terminal 71 of the microUSB, and ground (symbol G) through the short-circuit of A2 and B2 , the OTG function can be realized; when the switch 20 connects the D+D- circuit of the uplink port 11 with the host dedicated connector/line 40, A2 and B2 are no longer short-circuited, which means that the ground terminal G and the microUSB The ID terminal 71 of the mobile device is disconnected, and the mobile phone is turned into a U disk function; and as mentioned above, the special connector/line 70 of the mobile device is connected with the D+D-circuit of the first downlink port 12 dedicated to the mobile device.

Embodiment 4 shown in FIG. 5 is different from the foregoing embodiments in that: the changeover switch 20 has a contact connected to the identification terminal 14 of the control chip 10, by changing the different resistances (R3, R4) of the communication with the identification terminal 14 State, through the operation of the software of the control chip 10 itself, the uplink port 11 connected to the host becomes a downlink port, and the first downlink port 11 connected to the mobile device becomes an uplink port. Switching the uplink/downlink status of these two ports is consistent with whether the OTGID terminal is grounded or not to change the master-slave status of the mobile device.

The switch is a two-stage toggle switch with two rows of 12 pins, or a code switch, or a self-locking switch, or an electronic switch circuit composed of a light touch switch, a logic IC and a switch transistor.

The embodiment shown in Fig. 6 is different from the previous examples in that: the hub has a first control chip 10 and a second control chip 60, and the switch 20 switches the power supply end 15 of the first control chip 10 and the second control chip 60. The power terminal 65 switches the power supply so that only one hub chip operates at the same time. The second downlink ports 13 and 63 of the two hubs are connected in parallel, and are commonly connected to the female connectors that cooperate with peripheral devices, which is not shown in FIG. 6 .

The reset end and the power end of the control chip are connected to different pins of the same switch 20 . When the power terminal 15 of the first control chip 10 is powered on, its reset terminal 16 is not grounded, and the power terminal 65 of the second control chip 60 is disconnected, and the reset terminal 66 is grounded. When the power terminal 65 of the second control chip 60 is switched on, the reset terminal 66 is disconnected from the power terminal 15 of the first control chip 10 , and the reset terminal 16 of the first control chip 10 is grounded.

The embodiment shown in Fig. 7 is different from the previous example in that: the hub has a first mobile device dedicated connector 50 and a second mobile device dedicated connector 70, one of which is a USB2.0 OTG specification, and its ID end corresponds to the switch control ground contact , and the other is the USB3.1 Type C specification, the identification end corresponds to the resistance contact of the switch, and there is a sliding door 90 at the front of the first connector 50 and the second connector 70, so that only one line can be connected at the same time.

Embodiment 7 shown in FIG. 8 is a combination of Embodiment 5 and Embodiment 6. The hub has a first mobile device-specific connector 50 and a second mobile device-specific connector 70, and also has a first control chip 10 and a second control chip. Chip 60, only the first downlink port 62 of the second control chip 60 is not connected to the host, and the first downlink port 62 can be connected to other peripheral devices, such as USB to VGAIC, or to Ethernet IC.

The eighth embodiment shown in FIG. 9 differs from the seventh embodiment in that although it is connected to USB3.1 peripherals, since the HUB is a USB2.0 specification, no identification resistor needs to be connected, so only two sets of contacts are required to operate. One set of contacts is used to switch the first control chip 10 and the second control chip 60 , and the other set of contacts is used to switch the grounding of the USB2.0 OTGID.

Because when the switch is cut to the left to make the mobile device become a slave device, the first lower joint port 62 of the control chip 10 and the second control chip 60 is not connected to the host, so it can be used to connect the specific peripheral equipment required by the mobile device, such as The USB-to-Ethernet port chip 100 and its interface 101 may be connected to another USB socket to connect other peripheral devices.

The toggle switch is a two-stage toggle switch with two rows of 6 pins, or a code switch, or a self-locking switch, or an electronic switch circuit composed of a tact switch, a logic IC, and a switch transistor.

Claims (10)

1. a usb hub, it is characterized in that: include one or two control chip, diverter switch, host-specific connector/line, mobile device special connector/line, wherein, control chip has a first line of a couplet port, first second line of a couplet port and three the second second line of a couplet ports; First line of a couplet port is connected to main frame, and the first second line of a couplet port is as mobile device private port, and the second second line of a couplet port is connected to the socket connector coordinated with peripheral equipment; First line of a couplet port and first second line of a couplet port of control chip carry out the mutual switching be connected with between main frame and peripheral equipment by diverter switch (20), make peripheral equipment can be used as from equipment, also can be used as main equipment;

The power end of control chip is connected to diverter switch, then by computer power supply, makes the connection of control chip and mobile device in handoff procedure can carry out disconnecting restarting again; The replacement end of control chip is also connected to the contact of diverter switch, after power end disconnects, resets and holds then ground connection; After power end connects electricity again, reset end and then disconnect with ground end.

2. usb hub according to claim 1, is characterized in that: replacement end and the power end of described control chip are connected to the different contacts of same diverter switch.

3. usb hub according to claim 1, is characterized in that: the replacement end of described control chip is connected to another independently electronic circuit switch, and independently the switching action of electronic circuit switch motion and power end switch is synchronously carried out.

4. usb hub according to claim 1, it is characterized in that: described diverter switch also can have the contact be connected with the identification circuit among mobile device special connector/line and host-specific connector/line, by switching whether ground connection, to change the master slave mode of USB2.0OTG equipment, or change series impedance, make peripheral equipment change corresponding state.

5. usb hub according to claim 1, is characterized in that: described hub has two control chips, and diverter switch switches power supply by switching to the power end of control chip, makes to only have a hub chip running at one time; Second second line of a couplet port of two hubs is in parallel, and be jointly connected to the socket connector coordinated with peripheral equipment, the first second line of a couplet port of control chip can be connected with the main frame with USB3.1 interface, also can not be connected with main frame.

6. usb hub according to claim 2, it is characterized in that: described diverter switch is the two-part toggle switch of two row 6/12 pin marks, or toggle switch, or self-lock switch, or the electronic switch circuit be made up of touch-switch, logic IC and switch triode.

7. usb hub according to claim 1, it is characterized in that: described diverter switch is the two-part toggle switch of more than two row 18 pin marks, first line of a couplet port, first second line of a couplet port, host-specific connector/line, the D+D-circuit of mobile device special connector/line is all connected to diverter switch, when diverter switch is by the D+D-circuit of first line of a couplet port and mobile device special connector/line UNICOM, the D+D-circuit of first line of a couplet port and host-specific connector/line disconnect, when diverter switch is by the D+D-circuit of first line of a couplet port and host-specific connector/line UNICOM, the then D+D-circuit communication of mobile device special connector/line and special the first second line of a couplet port of mobile device, diverter switch has the stitch group connecting the identification end of USB3.1 or USB2.0OTGID end, by switching whether ground connection, to change the master slave mode of USB2.0OTG equipment, or changing series impedance, making peripheral equipment change corresponding state.

8. usb hub according to claim 1, it is characterized in that: described diverter switch has the contact be connected with the identification end of control chip, by changing the UNICOM's state with identification end, software via control chip itself operates, the first line of a couplet port of connection main frame is made to become second line of a couplet port, and the first second line of a couplet port connecting mobile device becomes first line of a couplet port, the first line of a couplet/second line of a couplet state switching two ports holds ground connection whether consistent to change mobile device master slave mode with 0TGID.

9. usb hub according to claim 1, it is characterized in that: described hub has two mobile device special connectors, one is USB2.0OTG specification, its ID holds corresponding diverter switch to control the contact of ground connection, another is USB3.1OTGTypeC specification, it identifies the resistance contact of the corresponding diverter switch of end, has sliding door, make the same time can only connect a line two connector front ends.

10. usb hub according to claim 9, is characterized in that: described usb hub, together with keyboard integrated, inserts keyboard, and its diverter switch (20) is arranged at surface of keyboard.