Input device

The input device as claimed in claim 1, further comprising a convex portion for a touch sensor, wherein

• the convex portion for a touch sensor is provided on the reverse side of the operation key and applies pressure on the touch sensor when a finger touches the operation key.

The input device as claimed in claim 2, wherein

• the convex portion for a touch sensor is provided along a center line of width of the circular resistive element, and
• the metal domes are arranged such that the tops of respective metal domes are located outward than the center line of width of the circular resistive element.

The input device as claimed in claim 4, wherein

• the metal domes are arranged such that the tops of respective metal domes are located within a square being circumscribed to the center line of width of the circular resistive element.

The input device as claimed in claim 5, wherein

• the metal domes are arranged such that the tops of respective metal domes are overlapped with vertices of a square being circumscribed to the center line of width of the circular resistive element.

The input device as claimed in claim 2, further comprising a rubber member including the convex portion for a touch sensor, wherein

• the rubber member includes a columnar center convex portion at a position corresponding to the center of the disk-shaped key, and
• the touch sensor is provided with a hole for putting the center convex portion into the center of the touch sensor.

The input device as claimed in claim 7, wherein

• a space between the center hole of the touch sensor and the outer circumference of the center convex portion in the case of coinciding the center of the center hole of the touch sensor with the center of the cross section of the center convex portion is less than a half of width of the resistive element.

The input device as claimed in claim 1, wherein

• at least the operation key, the metal domes and the touch sensor are included in a package.