Mechanical knob apparatus capable of push and rotation operations

A mechanical knob apparatus capable of push and rotation operations, the mechanical knob apparatus comprising:

• a dial configured to transmit a force at which a user rotates or presses a knob to perform the rotation or push operation of the knob as an exterior part of the knob;
• a push operation unit coupled to the dial through a radial bearing to perform the push operation;
• and
• a rotation operation unit coupled to the dial to perform both the push operation and the rotation operation, wherein the rotation operation unit includes:
• a detent housing having one end coupled to the dial, and being configured to accommodate the push operation unit, and being formed with an unevenness guide over a circumference of an inner diameter and with a plurality of slits over a circumference of another end to detect an amount of rotation of the dial in conjunction with a photosensor;
• and
• a detent elastically coupled to the unevenness guide of the detent housing and configured to radially perform an elastic movement upon the rotation operation of the dial and the detent housing.