CN-121996078-A - PCB capable of directly installing double-light-path optical axis, double-light-path optical axis and keyboard

CN121996078ACN 121996078 ACN121996078 ACN 121996078ACN-121996078-A

Abstract

The invention discloses a PCB capable of directly installing a double-light-path optical axis, a double-light-path optical axis and a keyboard, wherein the PCB is provided with a plurality of slotted holes, the PCB is fixed with the double-light-path optical axis through the slotted holes, each double-light-path optical axis is correspondingly provided with a chip and a photosensitive element, and the chip is one of a full-color chip, a color chip and a full-color chip. The double-light path optical axis comprises a bottom shell, a spring, an upper cover, a pressing handle with a light barrier, a double-light path light guide body and a receiving light guide body. The four chips are used as the emission light sources of the double-light-path light guide body, one path provides the emission light source for the optical switch, the other path provides the character illumination for the key cap, the photosensitive element receives the emission light source of the optical switch, and meanwhile, the double-light-path optical axis is directly arranged on the PCB, so that a special shaft body fixing plate is omitted, the material cost is reduced, the assembly cost is also reduced, the height of the keyboard is also reduced, the assembly error between the original shaft and the PCB is naturally eliminated, and the functional stability and the reliability of the keyboard are improved.

Inventors

LIANG XINGWEI
SA YUANGONG
SiMa Jianbo

Assignees

思迪科(广州)电子有限公司

Dates

Publication Date: 20260508
Application Date: 20260120

Claims (10)

1. A PCB capable of directly mounting double-light-path optical axes is characterized in that the PCB is provided with a plurality of slotted holes, the PCB is fixed with the double-light-path optical axes through the slotted holes, and each double-light-path optical axis corresponds to a full-color control chip and a photosensitive element on the PCB; the full-color chip is used as an emission light source of the double-light-path light guide body, one path provides an emission light source for the optical switch, and the other path provides key cap character illumination for the key, and the photosensitive element receives the emission light source of the optical switch; The full-color control chip comprises a GRB lamp bead, a control signal interface circuit, a GRB multicolor drive circuit, an address code memory and a serial-parallel single bus serial communication circuit, wherein the GRB lamp bead is integrated with the control signal interface circuit, the GRB multicolor drive circuit, the address code memory and the serial-parallel single bus serial communication circuit; the control signal interface pin is communicated with an external optical axis switch control signal, and the control signal interface circuit is responsible for processing the optical axis switch control signal and accessing into a serial-parallel single bus serial communication circuit; n address code input pins and address code output pins of the full-color control chips are cascaded back and forth to form serial data network DIN (1) -DOUT (n), two ends DIN (1) and DOUT (n) of the serial data network are respectively connected with an MCU, and the MCU writes sequence bits formed by the cascade connection of the full-color control chips into an address code memory through the serial data network DIN (1) -DOUT (n) and is used as a communication address code; the power pins of the n full-color control chips are connected in parallel to share a power network VCC, the ground pins are connected in parallel to share a ground network GND, and the parallel data wire pins are connected in parallel to form a parallel data wire network DIO and then connected to the MCU; The serial-parallel single-bus serial communication circuit is used for processing serial data network information and parallel data network information; GRB multicolor information and optical axis switch control information can be transmitted on a parallel data line network DIO; GRB multicolor information and optical axis switch control information can also be transmitted on the series data line networks DIN (1) -DOUT (n); The parallel data line network DIO and the serial data line networks DIN (1) -DOUT (n) both adopt serial single bus communication protocols to transmit GRB (glass fiber) multicolor information and optical axis switch control information, and are mutually hot standby.
2. A PCB capable of directly mounting double-light-path optical axes is characterized in that the PCB is provided with a plurality of slotted holes, the PCB is fixed with the double-light-path optical axes through the slotted holes, and each double-light-path optical axis corresponds to a color control chip and a photosensitive element on the PCB; The color combining chip is used as an emission light source of the double-light-path light guide body, one path provides an emission light source for the optical switch, the other path provides key cap character illumination for the key, and the photosensitive element receives the emission light source of the optical switch; The color control and collection chip comprises a control signal interface pin, a power supply pin, a grounding pin and a parallel data wire pin, wherein the power supply pin is used for supplying power to the color control and collection chip, and the grounding pin is used for signal grounding and power supply grounding; the control signal interface pin is communicated with an external optical axis switch control signal, and the control signal interface circuit is responsible for processing the optical axis switch control signal and accessing the parallel single bus serial communication circuit; The parallel data wire pins are connected in parallel to form a parallel data wire network DIO and then connected to the MCU, and the color-combination chip address code is written into the address code memory through an external jig and is used as a communication address code; The parallel single-bus serial communication circuit is used for processing parallel data line network information; The GRB multicolor information and the optical axis switch control information are transmitted on a parallel data line network DIO; the parallel data line network adopts serial single bus communication protocol to transmit GRB magical color information and optical axis switch control information.
3. A PCB capable of directly mounting double-light-path optical axes is characterized in that the PCB is provided with a plurality of slotted holes, the PCB is fixed with the double-light-path optical axes through the slotted holes, and each double-light-path optical axis corresponds to one color chip and one photosensitive element; the color-mounted chip is used as an emission light source of the double-light-path light guide body, one path provides an emission light source for the optical switch, the other path provides key cap character illumination for the key, and the photosensitive element receives the emission light source of the optical switch; The color control chip comprises a control signal interface pin, a power supply pin and a grounding pin, wherein the power supply pin is used for supplying power and transmitting information for the color control chip, and the grounding pin is used for signal grounding and power supply grounding; the control signal interface pin is communicated with an external optical axis switch control signal, and the control signal interface circuit is responsible for processing the optical axis switch control signal and accessing the parallel single bus serial communication circuit; The data information is modulated on a power supply network VCC, and the power supply network VCC is connected with a carrier data network VCC (DIO) in parallel, and the address code of the color chip is written into an address code memory by an external jig and is used as a communication address code; the parallel single-bus serial communication circuit is used for processing parallel carrier data line network information; The GRB magical color information and the optical axis switch control information can be transmitted in a parallel carrier data line network VCC (DIO); The parallel carrier data network adopts serial single bus communication protocol to transmit GRB magical color information and optical axis switch control information.
4. A PCB capable of directly installing double-light-path optical axes is characterized in that the PCB is provided with a plurality of slotted holes, the PCB is fixed with the double-light-path optical axes through the slotted holes, and each double-light-path optical axis corresponds to a color control chip and a photosensitive element on the PCB; The color-changing chip is used as an emission light source of the double-light-path light guide body, one path provides an emission light source for the optical switch, the other path provides key cap character illumination for the key, and the photosensitive element receives the emission light source of the optical switch; The control signal interface circuit, the GRB multicolor drive circuit and the serial single bus serial communication circuit are integrated, and the control signal interface circuit comprises a control signal interface pin, a power supply pin, a grounding pin, a serial signal input pin and a serial signal output pin; The control signal interface pin is communicated with an external optical axis switch control signal, and the control signal interface circuit is responsible for processing the optical axis switch control signal and accessing the serial single bus serial communication circuit; The serial signal input pins and the serial signal output pins of the n color control chips are cascaded back and forth to form serial data network DIN (1) -DOUT (n), two ends DIN (1) and DOUT (n) of the serial data network are respectively connected with the MCU, and the MCU transmits GRB color information and optical axis switch control information to the MCU through the serial data network DIN (1) -DOUT (n); the serial single bus serial communication circuit is used for processing serial data network information; the GRB multicolor information and the optical axis switch control information are transmitted on the series data line networks DIN (1) -DOUT (n); the serial data network adopts serial single bus communication protocol to transmit GRB magical color information and optical axis switch control information.
5. A PCB capable of directly mounting double-light-path optical axes is characterized in that the PCB is provided with a plurality of slotted holes, the PCB is fixed with the double-light-path optical axes through the slotted holes, and each double-light-path optical axis corresponds to a full-color-sensing chip and a photosensitive element on the PCB; The full-load color chip is used as an emission light source of the double-light-path light guide body, one path provides an emission light source for the optical switch, and the other path provides key cap character illumination for the key, and the photosensitive element receives the emission light source of the optical switch; the full-color-control chip comprises a control signal interface pin, a power supply pin, a grounding pin, an address code input pin and an address code output pin, wherein the power supply pin is used for supplying power and transmitting information to the full-color-control chip, and the grounding pin is used for signal grounding and power supply grounding; the control signal interface pin is communicated with an external optical axis switch control signal, and the control signal interface circuit is responsible for processing the optical axis switch control signal and accessing into a serial-parallel single bus serial communication circuit; The n pieces of the power supply pins of the full-load color chips are connected in parallel to share a power supply network VCC, the ground pins are connected in parallel to share a ground network GND, data information is modulated on the power supply network VCC and transmitted to the MCU, and the power supply network VCC is connected in parallel with the carrier data network VCC (DIO); The serial-parallel single-bus serial communication circuit is used for processing serial data line network information and parallel carrier data line network information; the GRB magical color information and the optical axis switch control information can be transmitted on a parallel carrier data line network VCC (DIO); GRB multicolor information and optical axis switch control information can also be transmitted on the series data line networks DIN (1) -DOUT (n); the parallel carrier data line network VCC (DIO) and the serial data line networks DIN (1) -DOUT (n) both adopt serial single bus communication protocols to transmit GRB (generic color) information and optical axis switch control information, and are mutually hot standby.
6. The photosensitive element according to any of claims 1-5, wherein the photosensitive element is a phototransistor or a photodiode.
7. The dual-optical-path optical axis is characterized in that a shaft body of the dual-optical-path optical axis is provided with a buckle and is fixed with a slot hole on the PCB according to any one of claims 1 to 5, the dual-optical-path optical axis comprises a dual-optical-path light guide body, a chip according to any one of claims 1 to 5 is used as an emission light source of the dual-optical-path light guide body, one path provides an emission light source for an optical switch, the other path provides key cap character illumination, and the dual-optical-path optical axis can be repeatedly plugged into the PCB.
8. The dual-optical-path optical axis of claim 7, comprising a movable push handle, and a dual-optical-path light guide body and a receiving light guide body which are oppositely arranged, wherein a GRB (glass fiber reinforced plastics) lamp bead serving as a light emitting unit is arranged below the dual-optical-path light guide body, a photosensitive element is arranged below the receiving light guide body, and meanwhile, the movable push handle is provided with a light barrier which moves up and down in a gap between the dual-optical-path light guide body and the receiving light guide body along with the movable push handle.
9. The dual-optical-path optical axis of claim 7, comprising a movable pressing handle, and an emission light guide column and a receiving light guide column which are oppositely arranged, wherein GRB (glass fiber reinforced plastics) lamp beads serving as light emitting units are arranged below the emission light guide column, the receiving light guide column comprises a first receiving light guide column and a second receiving light guide column, a first photosensitive element and a second photosensitive element are respectively arranged below the first receiving light guide column and the second receiving light guide column, and meanwhile, the movable pressing handle is provided with a grating structure which moves up and down in a gap between the emission light guide column and the receiving light guide column along with the movable pressing handle.
10. A keyboard comprising a PCB according to any one of claims 1 to 5 and a dual optical axis according to any one of claims 7 to 9.

Description

PCB capable of directly installing double-light-path optical axis, double-light-path optical axis and keyboard Technical Field The invention relates to an optical axis keyboard, in particular to a PCB capable of directly installing a double-optical-path optical axis, the double-optical-path optical axis and a keyboard. Background The optical axis of the original dual-optical-path keyboard is provided with a special fixing plate, the special fixing plate for the optical axis and the PCB are firmly locked together during assembly, the cost is high, the assembly error is large, optical axis elements with RGB indication are more, the MCU PIN number with USB function is at least more than 30PIN, the double-sided board is mostly made into a single panel, the elements are increased by hundreds, and the MCU can only be built in the optical axis PCB. Disclosure of Invention The invention aims to overcome the defects and shortcomings of the prior art and provides a PCB capable of directly mounting a double-light-path optical axis. Another object of the present invention is to provide a dual optical path optical axis. It is a further object of the present invention to provide a keyboard. The aim of the invention is achieved by the following technical scheme: a PCB capable of directly installing double-light-path optical axes is provided with a plurality of slotted holes, the PCB is fixed with the double-light-path optical axes through the slotted holes, and each double-light-path optical axis corresponds to one full-color control chip and one photosensitive element on the PCB; the full-color chip is used as an emission light source of the double-light-path light guide body, one path provides an emission light source for the optical switch, and the other path provides key cap character illumination for the key, and the photosensitive element receives the emission light source of the optical switch; The full-color control chip comprises a GRB lamp bead, a control signal interface circuit, a GRB multicolor drive circuit, an address code memory and a serial-parallel single bus serial communication circuit, wherein the GRB lamp bead is integrated with the control signal interface circuit, the GRB multicolor drive circuit, the address code memory and the serial-parallel single bus serial communication circuit; the control signal interface pin is communicated with an external optical axis switch control signal, and the control signal interface circuit is responsible for processing the optical axis switch control signal and accessing into a serial-parallel single bus serial communication circuit; n address code input pins and address code output pins of the full-color control chips are cascaded back and forth to form serial data network DIN (1) -DOUT (n), two ends DIN (1) and DOUT (n) of the serial data network are respectively connected with an MCU, and the MCU writes sequence bits formed by the cascade connection of the full-color control chips into an address code memory through the serial data network DIN (1) -DOUT (n) and is used as a communication address code; the power pins of the n full-color control chips are connected in parallel to share a power network VCC, the ground pins are connected in parallel to share a ground network GND, and the parallel data wire pins are connected in parallel to form a parallel data wire network DIO and then connected to the MCU; The serial-parallel single-bus serial communication circuit is used for processing serial data network information and parallel data network information; GRB multicolor information and optical axis switch control information can be transmitted on a parallel data line network DIO; GRB multicolor information and optical axis switch control information can also be transmitted on the series data line networks DIN (1) -DOUT (n); The parallel data line network DIO and the serial data line networks DIN (1) -DOUT (n) both adopt serial single bus communication protocols to transmit GRB (glass fiber) multicolor information and optical axis switch control information, and are mutually hot standby. A PCB capable of directly installing double-light-path optical axes is provided with a plurality of slotted holes, the PCB is fixed with the double-light-path optical axes through the slotted holes, and each double-light-path optical axis corresponds to a color control chip and a photosensitive element on the PCB; The color combining chip is used as an emission light source of the double-light-path light guide body, one path provides an emission light source for the optical switch, the other path provides key cap character illumination for the key, and the photosensitive element receives the emission light source of the optical switch; The color control and collection chip comprises a control signal interface pin, a power supply pin, a grounding pin and a parallel data wire pin, wherein the power supply pin is used for supplying power to the color control and collection chip, an