Holding apparatus and external keyboard using the same

An external keyboard assembly comprising

• a keyboard body and
• a holding apparatus fixed to the keyboard body, wherein the holding apparatus comprises:
• a base;
• two rotatable shafts, rotatablely connected to two ends of the base;
• two fixed portions, fixed to the two rotatable shafts at ends of the two rotatable shafts away from the base respectively, the keyboard body is fixed to ends of the two fixed portions away from the rotatable shafts;
• a clamp portion protruding from the base and configured for holding the electronic device, the clamp portion comprising a fixed damper and a rotatable clamper hinged to the base, wherein the rotatable clamper includes a fixed arm and two resisting arms which extends from the fixed arm toward the fixed clamper,
• an adjustment portion comprising:
• an angle adjusting member comprises a base body, a depressible member protruding from a first upper surface of the base body, two side arms protruding from two opposite ends of the base body and two resisting portions protruding from a first lower surface of the side arms toward a direction away from the depressible member, the two resisting portions respectively resisting on the two resisting arms;
• the angle adjusting member further includes a hook extending from a second bottom of the base body;
• a locking member which includes a main body and at least one locking protrusion protruding from the main body;
• each of the locking protrusion is engagable with the hook to prevent the rotatable clamper from rotating with the fixed clamper.