Universal circuit board for mechanical keyswitch and optical keyswitch

Patent metadata

Field	Value
Publication number	US-10147561-B2
Application number	US-201715490903-A
Country	US
Kind code	B2
Filing date	Apr 19, 2017
Priority date	Nov 29, 2016
Publication date	Dec 4, 2018
Grant date	Dec 4, 2018

Abstract

A universal circuit board compatible for a mechanical keyswitch and an optical keyswitch includes a main body, a plurality of conductive terminals and an opening structure. The main body has a first surface and a second surface opposite to each other. The plurality of conductive terminals is disposed on the first surface of the main body. The opening structure is formed on the main body and pierces through the first surface and the second surface. The opening structure can be inserted by an axle body of the mechanical keyswitch or be an optical transmission channel of the optical keyswitch.

First claim

What is claimed is:

1. A universal circuit board compatible for a mechanical keyswitch and an optical keyswitch, the universal circuit board comprising:
a main body, having a first surface and a second surface opposite to each other;
a plurality of conductive terminals disposed on the first surface of the main body;
an opening structure formed on the main body and piercing through the first surface and the second surface, the opening structure being inserted by an axle body of the mechanical keyswitch or being an optical transmission channel of the optical key switch;
a circuit substrate disposed on the second surface of the main body; and
an optical detecting unit disposed on a side of the circuit substrate facing the second surface and aligning with the opening structure, an optical detecting signal output by the optical detecting unit passing through the opening structure and being exited from the first surface to detect a movement of a keycap of the optical key switch.

2. The universal circuit board of claim 1 , wherein the plurality of conductive terminals are respectively connected to a plurality of resilient components of the mechanical keyswitch, the plurality of conductive terminals are utilized to transmit a conduction signal generated by deformation of the plurality of resilient components while a keycap of the mechanical keyswitch is moved related to the axle body and the plurality of resilient components are pressed and deformed.

3. The universal circuit board of claim 1 , wherein the optical detecting unit is disposed inside a positioning hole structure of the optical keyswitch.

4. The universal circuit board of claim 1 , further comprising:
a constraining component disposed on the side of the circuit substrate facing the second surface and adapted to insert into a positioning hole structure of the optical key switch.

5. The universal circuit board of claim 1 , further comprising:
an operational processing unit disposed on the main body, the operational processing unit determining that the opening structure is assembled with the mechanical keyswitch while the plurality of conductive terminals are detected to transmit a conductive signal, and further determining that the opening structure is assembled with the optical keyswitch while the plurality of conductive terminals make no contact.

6. The universal circuit board of claim 1 , wherein the mechanical keyswitch and the optical keyswitch are disposed on the first surface of the main body in a detachable manner.

Assignees

• Pixart Imaging Inc

Inventors

• Wang Tsung-Fa
• Kuo Shih-Wei

Classifications

• H01H2221/008

  other then push button · CPC title

• H01H3/125 Primary

  using a scissor mechanism as stabiliser · CPC title

• H03K17/941

  using an optical detector (H03K17/968 takes precedence) · CPC title

• H05K2201/09063

  Holes or slots in insulating substrate not used for electrical connections · CPC title

• H05K1/0287

  having an universal lay-out, e.g. pad or land grid patterns or mesh patterns · CPC title