Integrated key plate for an input device
An input device can include a chassis, a housing coupled to the chassis and forming a top surface of the input device, a depressible key plate integrated with and forming a part of the housing, a biasing mechanism (e.g., a spring) disposed within the housing and coupled to a bottom portion of the key plate to provide a downward force on the key plate, and a force sensor (e.g., switch) disposed in the chassis and in contact with the bottom portion of the key plate to activate in response to receiving a threshold force by the bottom surface of the key plate. The key plate may depress in response to receiving at least a predetermined depression force on the top surface. In some cases, the downward force provided by the biasing mechanism can be substantially equal to the predetermined depression force.
1. An input device comprising:
a chassis;
a housing coupled to the chassis and forming a top surface of the input device, the housing including a knuckle support region;
a depressible key plate integrated with and forming a part of the housing such that the housing and depressible key plate form a continuous surface, the key plate including:
a top portion forming a part of the top surface of the input device; and
a bottom portion;
a tuned biasing mechanism disposed within the housing and coupled to the bottom portion of the key plate, the biasing mechanism configured to provide a downward pulling force on the key plate;
a force sensor disposed in the chassis and in contact with the bottom portion of the key plate, the force sensor to activate in response to receiving a threshold force by the bottom portion of the key plate; and
a support assembly including:
a first support end coupled to a bottom side of the housing in the knuckle support region; and
a second support end that extends to the bottom portion of the key plate without contacting the bottom portion of the key plate, wherein the tuned biasing mechanism is further coupled to the second support end to provide an anchor point for providing the downward pulling force on the key plate.
2. The input device of claim 1 wherein the key plate depresses in response to receiving at least a depression force on the top surface, and
wherein the downward force provided by the biasing mechanism is substantially equal to the depression force.
3. The input device of claim 1 wherein the biasing mechanism is a spring.
4. The input device of claim 1 wherein the force sensor is an actuator.
5. The input device of claim 1 wherein the key plate is a cantilever beam such that the key plate depresses with respect to the knuckle support region of the housing.
6. The input device of claim 1 further comprising:
a second depressible key plate integrated with and forming a part of the housing, the second key plate including:
a top portion forming a second part of the top surface of the input device; and
a bottom portion;
a second biasing mechanism disposed within the housing and coupled to the bottom portion of the second key plate, the second biasing mechanism to provide a downward force on the second key plate; and
a second force sensor disposed in the chassis and in contact with the bottom portion of the second key plate, the second force sensor to activate in response to receiving a second threshold force by the bottom portion of the second key plate.
7. The input device of claim 6 wherein the second key plate depresses in response to receiving at least a second depression force on the top surface, and
wherein the downward force provided by the second biasing mechanism is substantially equal to the second depression force.
8. The input device of claim 7 wherein the depression force and the second depression force are not substantially equal.
9. An apparatus comprising:
a housing coupled to a chassis of a computer mouse, the housing forming a top surface of the computer mouse, the housing including a knuckle support region;
a depressible key plate integrated with and forming a part of the housing such that the housing and depressible key plate form a continuous surface, the key plate including:
a top portion forming a part of the top surface of the computer mouse; and
a bottom portion; and
a tuned biasing mechanism disposed within the housing and coupled to the bottom
portion of the key plate, the biasing mechanism configured to provide a downward pulling force on the key plate; and
a support assembly including:
a first support end coupled to a bottom side of the housing in the knuckle support region; and
a second support end that extends to the bottom portion of the key plate without contacting the bottom portion of the key plate, wherein the tuned biasing mechanism is further coupled to the second support end to provide an anchor point for providing the downward pulling force on the key plate.
10. The apparatus of claim 9 wherein the bottom portion of the key plate, when the housing is coupled to the chassis, contacts a force sensor disposed in the chassis.
11. The apparatus of claim 10 wherein the force sensor is an actuator.
12. The apparatus of claim 9 wherein the key plate depresses in response to receiving at least a depression force on the top surface, and
wherein the downward force provided by the biasing mechanism is substantially equal to the depression force.
13. The apparatus of claim 9 wherein the biasing mechanism is a spring.
14. The apparatus of claim 9
wherein the key plate is a cantilever beam such that the key plate depresses with respect to the knuckle support region of the housing.