Angle-adjustable supporting mechanism and knob-type locking mechanism thereof

An angle-adjustable supporting mechanism, for supporting an external device, the supporting mechanism comprising:

• a base including a supporting portion, and a receiving space, the receiving space formed in the supporting portion;
• a knob rotatably received in the receiving space of the base, the knob having a first actuating portion and a second actuating portion;
• a latch member movably received in the supporting portion of the base in a linear direction, the latch member having a bolt, a first stressed part, and a second stressed part, the bolt disposed at one side of the first stressed part, and the first stressed part disposed between the bolt and the second stressed part;
• and
• a rotatable holder rotatably disposed in the base, the external device connected to the rotatable holder;
• wherein, when the knob is rotated in a first direction, the first actuating portion pushes the first stressed part, so as to drive the bolt of the latch member to move in a linear-locking direction, and lock the rotatable holder to the base;
• wherein, when the knob is rotated in a second direction, the second actuating portion pushes the second stressed part, so as to drive the bolt of the latch member to move in a linear-unlocking direction, and the rotatable holder is configured to be in a rotatable state.

A knob-type locking mechanism, comprising:

• a base including a supporting portion, and a receiving space defined in the supporting portion;
• a knob rotatably received in the receiving space of the base, the knob having a first actuating portion and a second actuating portion;
• and
• a latch member movably received in the supporting portion of the base in a linear direction, the latch member including a bolt, a first stressed part, and a second stressed part, the bolt disposed at one side of the first stressed part, the first stressed part disposed between the bolt and the second stressed part;
• wherein, when the knob is rotated in a first direction, the first actuating portion pushes the first stressed part, so as to drive the bolt of the latch member to move in a linear-locking direction;
• wherein, when the knob is rotated in a second direction, the second actuating portion pushes the second stressed part, so as to drive the bolt of the latch member to move in a linear-unlocking direction;
• wherein the knob includes a knob body, a holding portion formed at one side of the knob body, and a rod body connected to another side of the knob body, the rod body has a central axis, and the first actuating portion and the second actuating portion protrude outward from the rod body;
• wherein the base includes a base plate and a periphery wall connected to a periphery of the base plate, the receiving space is formed on the base plate, the supporting portion is disposed on the base plate, and the receiving space has a first arc groove and a second arc groove respectively engraved through the base plate, wherein the knob has a first hook and a second hook, and the first hook and the second hook protrude from the knob body and disposed at two sides of the central axis oppositely, wherein the first hook is movably engaged with the first arc groove, and the second hook is movably engaged with the second arc groove.