CN215987295U - Interface expansion device and interface expansion equipment - Google Patents
Interface expansion device and interface expansion equipment Download PDFInfo
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- CN215987295U CN215987295U CN202121985327.0U CN202121985327U CN215987295U CN 215987295 U CN215987295 U CN 215987295U CN 202121985327 U CN202121985327 U CN 202121985327U CN 215987295 U CN215987295 U CN 215987295U
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Abstract
The embodiment of the utility model provides an interface expansion device and interface expansion equipment, wherein the interface expansion device comprises a USB interface, a power socket and a data socket; the USB interface comprises a first data transmission pin and a first power supply pin; the power socket comprises a second power supply pin, the second power supply pin is connected with the first power supply pin, and the power socket is used for being connected with an external power supply; the data socket comprises a second data transmission pin, the second data transmission pin is connected with the first data transmission pin, and the data socket is used for data transmission. The interface expansion device provided by the embodiment of the utility model can enable the electronic equipment connected with the USB interface to be capable of simultaneously charging and transmitting data, thereby meeting the use requirements of users.
Description
Technical Field
The utility model relates to the technical field of electronic circuits, in particular to an interface expansion device and interface expansion equipment.
Background
At present, electronic devices are basically equipped with an interface capable of data transmission and charging, for example, a Type-C interface. During the production and after-sales repair of electronic devices, it is often necessary to upgrade the firmware of the electronic devices or write corresponding parameters while the electronic devices are being charged. The existing data line can only transmit data or charge the electronic device singly, and the use requirements of users cannot be met.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, the present invention provides an interface expansion apparatus and an interface expansion device, which can enable an electronic device to simultaneously perform data transmission and charging, and meet the use requirements of users.
The embodiment of the utility model is realized by adopting the following technical scheme:
an interface expansion device comprises a USB interface, a power socket and a data socket; the USB interface comprises a first data transmission pin and a first power supply pin; the power socket comprises a second power supply pin, the second power supply pin is connected with the first power supply pin, and the power socket is used for being connected with an external power supply; the data socket comprises a second data transmission pin, the second data transmission pin is connected with the first data transmission pin, and the data socket is used for data transmission.
In some embodiments, the data socket includes a first socket and a second socket, the second data transmission pin includes a first sub data transmission pin and a second sub data transmission pin, wherein the first sub data transmission pin is a pin of the first socket, the second sub data transmission pin is a pin of the second socket, and the interface expansion apparatus further includes a switching circuit connected between the data socket and the USB interface, the switching circuit being configured to connect the first data transmission pin to one of the first sub data transmission pin and the second sub data transmission pin.
In some embodiments, the first socket further includes a third power supply pin, the switching circuit includes a first switch, a second switch, a third switch, and a switching unit: the first end of the first switch is connected to the second power supply pin, the second end of the first switch is grounded, and the control end of the first switch is connected to the third power supply pin; the first end of the second switch is connected to the first data transmission pin, and the second end of the second switch is connected to the first subdata transmission pin; a first end of the third switch is connected to the first data transmission pin, and a second end of the third switch is connected to the second subdata transmission pin; the switching unit is connected to the first end of the first switch, the control end of the second switch and the control end of the third switch, and the switching unit is used for switching the conduction states of the second switch and the third switch according to the level state of the first end of the first switch.
In some embodiments, when the first terminal of the first switch is at a high level, the switching unit turns on the third switch; when the first end of the first switch is at low level, the switching unit turns on the second switch.
In some embodiments, the switching unit includes a first inverter and a second inverter: the input end of the first phase inverter is connected to the first end of the first switch, and the output end of the first phase inverter is connected to the control end of the second switch; the input end of the second inverter is connected to the output end of the first inverter, and the output end of the second inverter is connected to the control end of the third switch.
In some embodiments, the first switch is a transistor, a base of the transistor is connected to the third power supply pin, an emitter of the transistor is grounded, and a collector of the transistor is connected to the second power supply pin.
In some embodiments, the USB interface further includes an identification pin, where the identification pin is used to connect to an external device and identify a communication mode of the external device and a required power of the external device, and the communication mode includes a PD communication mode.
In some embodiments, the power outlet is a Type-C outlet.
In some embodiments, the first socket is a Micro USB socket and the second socket is a Type-C socket.
The embodiment of the utility model also provides interface expansion equipment which comprises an equipment main body and the interface expansion device arranged on the equipment main body.
Compared with the prior art, the interface expansion device provided by the embodiment of the utility model comprises a USB interface, a power socket and a data socket; the USB interface comprises a first data transmission pin and a first power supply pin; the power socket comprises a second power supply pin, the second power supply pin is connected with the first power supply pin, and the power socket is used for being connected with an external power supply; the data socket comprises a second data transmission pin, the second data transmission pin is connected with the first data transmission pin, and the data socket is used for data transmission. The interface expansion device of the utility model enables the electronic equipment connected with the USB interface to be capable of simultaneously charging and transmitting data through the power socket and the data socket, thereby meeting the use requirements of users.
These and other aspects of the utility model are apparent from and will be elucidated with reference to the embodiments described hereinafter.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 shows a block diagram of an interface expansion apparatus according to an embodiment of the present invention.
Fig. 2 is a block diagram of a data jack and a switching circuit according to an embodiment of the present invention.
Fig. 3 is a schematic circuit diagram of an interface expansion apparatus according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
At present, electronic devices are basically equipped with an interface capable of data transmission and charging, for example, a Type-C interface. During the production and after-sales repair of electronic devices, it is often necessary to upgrade the firmware of the electronic devices or write corresponding parameters while the electronic devices are being charged. The existing data line can only transmit data or charge the electronic device singly, and the use requirements of users cannot be met.
In order to solve the above problems, the inventors have long studied and proposed an interface expansion apparatus according to an embodiment of the present invention, where the interface expansion apparatus includes a USB interface, a power socket, and a data socket; the USB interface comprises a first data transmission pin and a first power supply pin; the power socket comprises a second power supply pin, the second power supply pin is connected with the first power supply pin, and the power socket is used for being connected with an external power supply; the data socket comprises a second data transmission pin, the second data transmission pin is connected with the first data transmission pin, and the data socket is used for data transmission. The interface expansion device of the utility model enables the electronic equipment connected with the USB interface to be capable of simultaneously charging and transmitting data through the power socket and the data socket, thereby meeting the use requirements of users.
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, fig. 1 is a schematic diagram illustrating an interface expansion apparatus 100 according to an embodiment of the present invention. The interface expansion device 100 includes a Universal Serial BUS (USB) interface 110, a power socket 120, and a data socket 130. The USB interface 110 includes a first power supply pin a and a first data transmission pin B; the power socket 120 is used for connecting with an external power supply, and includes a second power supply pin a, which is connected with the first power supply pin a; the data socket 130 is used for data transmission and includes a second data transmission pin B, and the second data transmission pin B is connected with the first data transmission pin B.
In this embodiment, the USB interface 110 may be connected to an external electronic device, the electronic device package may be, but is not limited to, a mobile phone, and specifically, the USB interface 110 may be connected to a USB socket on the external electronic device. Further, the power socket 120 may be connected to an external power source, and specifically, the power socket 120 may be connected to an interface of an external data line, and then connected to a power adapter through the external data line, so as to turn on the power source. When the power socket 120 is powered on, the USB interface 110 may supply power to the electronic device because the first power supply pin a is connected to the second power supply pin a. The data socket 130 may be connected to an external device, which may be but is not limited to a computer, and specifically, the data socket 130 may be connected to an interface of an external data line, and then connected to the external device through the external data line. When the data socket 130 is connected to an external device, since the first data transmission pin B and the second data transmission pin B are connected, the electronic device connected to the USB interface 110 can perform data transmission with the external device. Because the first power supply pin a and the first data transmission pin B in the USB interface 110 are independent from each other and can be respectively connected to a power supply and an external device, the interface expansion apparatus 100 can enable the electronic device to simultaneously perform data transmission and charging, thereby meeting the user requirements.
Further, as shown in fig. 2, the data socket 130 includes a first socket 131 and a second socket 132, and the second data transmission pin b of the data socket 130 includes a first sub data transmission pin b1 and a second sub data transmission pin b 2. The first sub data transmission pin b1 is a pin of the first socket 131, and the second sub data transmission pin b2 is a pin of the second socket 132. Further, the interface expansion apparatus 100 may further include a switching circuit 140, wherein the switching circuit 140 is connected between the data socket 130 and the USB interface 110, and specifically connected between the first socket 131, the second socket 132 and the first data transmission pin B of the USB interface 110. The switching circuit 140 is configured to connect the first data transmission pin B to one of the first sub data transmission pin B1 and the second sub data transmission pin B2.
In this embodiment, both the first socket 131 and the second socket 132 may be connected to an external device, wherein the first socket 131 may realize connection between the electronic device and the external device through the first sub-data transmission pin B1 and the first data transmission pin B; likewise, the second socket 132 may enable connection of the electronic device with an external device through the second sub data transmission pin B2 and the first data transmission pin B. The switching circuit 140 switches the connection state of the first data transmission pin B, the first sub-data transmission pin B1 and the second sub-data transmission pin B2, so as to switch the connection channel between the electronic device and the external device, thereby increasing the selection space of the data transmission channel of the electronic device and further meeting the use requirements of users.
On the basis of the embodiment shown in fig. 2, as shown in fig. 3, the switching circuit 140 in this embodiment includes a first switch 141, a second switch 142, a third switch 143, and a switching unit 144. The first socket 131 further includes a third power supply pin a 1. A first terminal of the first switch 141 is connected to the second power supply pin a of the power socket 120, a second terminal of the first switch 141 is grounded, and a control terminal of the first switch 141 is connected to the third power supply pin a1 of the first socket 131. In this embodiment, the first switch 141 may be a transistor Q1, and the transistor Q1 is specifically an NPN-type transistor. In some embodiments, the first switch 141 may also be at least one of a triode, a field effect transistor, and a thyristor. Further, the switching circuit 140 may further include a first resistor R1, a second resistor R2, and a third resistor R3. One end of the first resistor R1 is connected to the second power supply pin a of the power socket 120, and the other end of the first resistor R1 is connected to the collector of the transistor Q1; one end of the second resistor R2 is connected to the third power supply pin a1 of the first socket 131, and the other end of the second resistor R2 is connected to the base of the transistor Q1; one end of the third resistor R3 is connected to the base of the transistor Q1, and the other end of the third resistor R3 is connected to the emitter of the transistor Q1. The emitter of transistor Q1 is connected to ground.
Further, a first end of the second switch 142 is connected to the first data transmission pin B of the USB interface 110, and a second end of the second switch 142 is connected to the first sub data transmission pin B1 of the first socket 131. In this embodiment, the second switch 142 may be at least one of a triode, a field effect transistor, and a thyristor, but is not limited thereto. A first end of the third switch 143 is connected to the first data transmission pin B of the USB interface 110, and a second end of the third switch 143 is connected to the second sub-data transmission pin B2 of the second socket 132. In this embodiment, the third switch 143 may be at least one of a transistor, a field effect transistor, and a thyristor, but is not limited thereto.
Further, the switching unit 144 is connected to the first end of the first switch 141, the control end of the second switch 142, and the control end of the third switch 143. The switching unit 144 is configured to switch the conducting states of the second switch 142 and the third switch 143 according to a level state of the first terminal of the first switch 141. When the first terminal of the first switch 141 is at a high level, the switching unit 144 turns on the third switch 143; when the first terminal of the first switch 141 is at a low level, the switching unit 144 turns on the second switch 142.
In this embodiment, since the first end of the first switch 141 is connected to the second power supply pin a of the power socket 120, when the power socket 120 is connected to a power source, the first end of the first switch 141 is in a high level state, and at this time, the switching circuit 140 turns on the third switch 143 and turns off the second switch 142, so that the UBS interface is connected to the second socket 132, and the USB interface 110 is disconnected from the first socket 131, so that the data transmission channel between the USB interface 110 and the second socket 132 is connected, that is, the electronic device can perform data transmission with an external device connected to the second socket 132. When the first socket 131 is connected to an external device, the external device may provide a voltage to the control terminal of the first switch 141 through the third power supply pin a1 of the first socket 131, so that the first switch 141 is turned on, and the level state of the first terminal of the first switch 141 is switched from the high level state to the low level state. After the level state of the first end of the first switch 141 changes to the low level state, the switching unit 144 turns on the second switch 142 and turns off the third switch 143, so that the USB interface 110 is connected to the first socket 131, and the USB interface 110 is disconnected from the second socket 132, so as to turn on the data transmission channel between the USB interface 110 and the first socket 131, that is, the electronic device can perform data transmission with the external device connected to the first socket 131.
As can be seen, when the external device is not connected to the first socket 131, the data transmission channel between the USB interface 110 and the second socket 132 is enabled by default, and the data transmission channel between the USB interface 110 and the first socket 131 is disabled. When the first socket 131 is connected to an external device, the data transmission channel between the USB interface 110 and the first socket 131 may be immediately enabled, and the data transmission channel between the USB interface 110 and the second socket 132 may be disabled. Therefore, a user can arbitrarily select one of the first socket 131 and the second socket 132 to connect an external device for data transmission with the electronic device, so as to provide a selection space of a data transmission channel and meet the user's requirements.
In some embodiments, the switching circuit 140 may include a first inverter a1 and a second inverter a 2. Wherein the input terminal of the first inverter a1 is connected to the first terminal of the first switch 141, and the output terminal of the first inverter a1 is connected to the control terminal of the second switch 142. Specifically, the input terminal of the first inverter a1 is connected to the collector of the transistor Q1. The input terminal of the second inverter a2 is connected to the output terminal of the first inverter a1, and the output terminal of the second inverter a2 is connected to the control terminal of the third switch 143.
In this embodiment, the USB interface 110 may further include an identification pin, which is used to connect with an external device and identify a communication mode and a required power of the external device. The communication means may include, but is not limited to, PD communication means. And the external device may be an electronic device.
The working principle of the interface expansion apparatus 100 provided by the embodiment of the present invention will be described in detail with reference to fig. 3.
In this embodiment, the USB interface 110 may be a Type-C interface, which may be directly connected to an external electronic device. Power receptacle 120 may be a Type-C receptacle that may be connected to a power adapter via an external Type-C data line. When the power socket 120 is connected to a power adapter and a power source is connected, power may be supplied to an electronic device connected to the USB interface 110. Further, the power socket 120 may be connected to a power adapter supporting the PD3.0 protocol, and the USB interface 110 may identify a communication mode of the electronic device, for example, whether the electronic device supports PD communication, through the identification pin. The USB interface 110 may further identify a required power of the electronic device through the identification pin, and may further power the electronic device with a corresponding output power.
The first socket 131 may be a Micro USB socket, which may be connected to an external device through an external Micro USB data line. The second receptacle 132 may be a Type-C receptacle, which may also be connected to an external device via an external Type-C data line. In this embodiment, the external device may be, but is not limited to, a computer. When the first socket 131 or the second socket 132 is connected to an external device, the electronic device may perform data transmission with the external device through the first socket 131 or the second socket 132.
Therefore, the interface expansion apparatus 100 of the present embodiment can provide two different transmission channels while supplying power to the electronic device, so that the electronic device and the external device perform data transmission.
Further, the enabling of the two data channels can be automatically switched by the switching circuit 140 while the electronic device is powered. Specifically, when the power socket 120 is connected to a power supply, the second power supply pin a of the power socket 120 is at a high level, that is, the collector of the transistor Q1 is at a high level, and at this time, the first inverter a1 outputs a low level signal to the second switch 142, so that the second switch 142 is turned off, and the data transmission channel between the first socket 131 and the USB interface 110 is further closed; and the second inverter a2 outputs a high level signal to the third switch 143, so that the third switch 143 is turned on, thereby enabling the data transmission channel between the second socket 132 and the USB interface 110. It can be seen that, in the normal state, when the power socket 120 is powered on, the data transmission channel between the second socket 132 and the USB interface 110 may be enabled by default, and the data transmission channel between the first socket 131 and the USB interface 110 may be closed by default.
Further, when the first socket 131 is connected to an external device, the external device may input a voltage to the base of the transistor Q1 through the third power supply pin a1 of the first socket 131, so as to turn on the transistor Q1. When the transistor Q1 is turned on, the first inverter a1 outputs a high level signal to the second switch 142, so that the second switch 142 is turned on, and the data transmission channel between the first socket 131 and the USB interface 110 is enabled; and the second inverter a2 outputs a low level signal to the third switch 143, so that the third switch 143 is turned off, thereby closing the data transmission channel between the second socket 132 and the USB interface 110. At this time, the electronic device connected to the USB interface 110 can perform data transmission with the external device connected to the first socket 131.
The interface expansion device provided by the embodiment of the utility model comprises a USB interface, a power socket and a data socket; the USB interface comprises a first data transmission pin and a first power supply pin; the power socket comprises a second power supply pin, the second power supply pin is connected with the first power supply pin, and the power socket is used for being connected with an external power supply; the data socket comprises a second data transmission pin, the second data transmission pin is connected with the first data transmission pin, and the data socket is used for data transmission. The interface expansion device of the utility model enables the electronic equipment connected with the USB interface to be capable of simultaneously charging and transmitting data through the power socket and the data socket, thereby meeting the use requirements of users.
The embodiment of the utility model also provides interface expansion equipment, which comprises an equipment main body and the interface expansion device. The interface expansion device is arranged in the equipment main body.
The interface expansion equipment provided by the embodiment of the utility model comprises a USB interface, a power socket and a data socket; the USB interface comprises a first data transmission pin and a first power supply pin; the power socket comprises a second power supply pin, the second power supply pin is connected with the first power supply pin, and the power socket is used for being connected with an external power supply; the data socket comprises a second data transmission pin, the second data transmission pin is connected with the first data transmission pin, and the data socket is used for data transmission. The interface expansion device of the utility model enables the electronic equipment connected with the USB interface to be capable of simultaneously charging and transmitting data through the power socket and the data socket, thereby meeting the use requirements of users.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (10)
1. An interface expansion apparatus, the apparatus comprising:
the USB interface comprises a first data transmission pin and a first power supply pin;
the power socket comprises a second power supply pin, the second power supply pin is connected with the first power supply pin, and the power socket is used for being connected with an external power supply; and
and the data socket comprises a second data transmission pin, the second data transmission pin is connected with the first data transmission pin, and the data socket is used for data transmission.
2. The interface expansion apparatus as claimed in claim 1, wherein the data socket includes a first socket and a second socket, and the second data transmission pin includes a first sub data transmission pin and a second sub data transmission pin, wherein the first sub data transmission pin is a pin of the first socket, and the second sub data transmission pin is a pin of the second socket, and the interface expansion apparatus further includes a switching circuit connected between the data socket and the USB interface, the switching circuit being configured to connect the first data transmission pin to one of the first sub data transmission pin and the second sub data transmission pin.
3. The interface expansion apparatus of claim 2, wherein the first socket further comprises a third power supply pin, the switching circuit comprising:
a first switch, a first end of which is connected to the second power supply pin, a second end of which is grounded, and a control end of which is connected to the third power supply pin;
a first end of the second switch is connected to the first data transmission pin, and a second end of the second switch is connected to the first sub-data transmission pin;
a first end of the third switch is connected to the first data transmission pin, and a second end of the third switch is connected to the second sub-data transmission pin; and
the switching unit is connected to the first end of the first switch, the control end of the second switch and the control end of the third switch, and the switching unit is used for switching the conducting states of the second switch and the third switch according to the level state of the first end of the first switch.
4. The interface extension apparatus of claim 3, wherein the switching unit turns on the third switch when the first terminal of the first switch is at a high level; when the first end of the first switch is at a low level, the switching unit turns on the second switch.
5. The interface expansion apparatus of claim 3, wherein the switching unit comprises:
the input end of the first inverter is connected to the first end of the first switch, and the output end of the first inverter is connected to the control end of the second switch;
and the input end of the second inverter is connected to the output end of the first inverter, and the output end of the second inverter is connected to the control end of the third switch.
6. The interface extender of claim 3, wherein said first switch is a transistor having a base connected to said third power supply pin, an emitter connected to ground, and a collector connected to said second power supply pin.
7. The interface expansion apparatus according to any one of claims 1 to 6, wherein the USB interface further comprises an identification pin, the identification pin is used for connecting with an external device and identifying a communication mode of the external device and a required power of the external device, and the communication mode includes a PD communication mode.
8. The interface extension arrangement of any one of claims 1 to 6, wherein the power outlet is a Type-C outlet.
9. The interface expansion device of any one of claims 2 to 6, wherein the first socket is a Micro USB socket and the second socket is a Type-C socket.
10. An interface expansion device, comprising a device body and the interface expansion apparatus according to any one of claims 1 to 9 provided on the device body.
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| CN202121985327.0U CN215987295U (en) | 2021-08-23 | 2021-08-23 | Interface expansion device and interface expansion equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121985327.0U CN215987295U (en) | 2021-08-23 | 2021-08-23 | Interface expansion device and interface expansion equipment |
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| CN215987295U true CN215987295U (en) | 2022-03-08 |
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