Electronic device and hinge assembly thereof

An electronic device, comprising:

• a first casing and a second casing;
• a hinge assembly comprising:
• a first fixing block having a first end and a second end, wherein the first end is attached to a first casing;
• a second fixing block having a third end and a fourth end, wherein the third end is attached to a second casing;
• a first linking rod having a fifth end and a sixth end, wherein the fifth end is slidably and rotatably connected to the second end, and the sixth end is rotatably connected to the fourth end;
• and
• a second linking rod having a seventh end and an eighth end, wherein the seventh end is slidably and rotatably connected to the fourth end, and the eighth end is rotatably connected to the second end,
• wherein the sixth end has a groove portion providing elastic deformation and a first inclined surface, the eighth end has a second inclined surface, and the first inclined surface contacts the second inclined surface.

A hinge assembly, comprising:

• a first fixing block;
• a second fixing block;
• a first linking rod slidably and rotatably connected to the first fixing block and rotatably connected to the second fixing block;
• and
• a second linking rod slidably and rotatably connected to the second fixing block, rotatably connected to the first fixing block, and rotatably connected to the first linking rod,
• wherein the first linking rod further has a groove portion disposed between the first fixing block, the second fixing block and the second linking rod,
• wherein the first linking rod further has a first inclined surface, the second linking rod further has a second inclined surface, and the first inclined surface contacts the second inclined surface,
• wherein the first inclined surface is located between the groove portion and the second inclined surface.

An electronic device, comprising:

• a first casing;
• a second casing;
• a first fixing block attached to the first casing;
• a second fixing block attached to the second casing;
• a first linking rod slidably and rotatably connected to the first fixing block and rotatably connected to the second fixing block;
• and
• a second linking rod slidably and rotatably connected to the second fixing block, rotatably connected to the first fixing block, and rotatably connected to the first linking rod,
• wherein the first linking rod further has a groove portion disposed between the first fixing block, the second fixing block and the second linking rod,
• wherein the first linking rod further has a first inclined surface, the second linking rod further has a second inclined surface, and the first inclined surface contacts the second inclined surface,
• wherein the first inclined surface is located between the groove portion and the second inclined surface.