Electric device and pivot mechanism thereof

A pivot mechanism disposed in an electric device, which comprises a main body and a supporting crutch, the pivot mechanism connecting the main body to the supporting crutch, the main body being rotated around the supporting crutch through the pivot mechanism, the pivot mechanism comprising:

• a first bearing shim having a limiting salient, which has a first sidewall, a second sidewall and an inclined surface tilted from the second sidewall to the first sidewall;
• a second bearing shim having a sliding salient and an extension arm, wherein the extension arm is a long shaped structure, the sliding salient is disposed at a distal end of the extension arm, the main body is positioned at a first position relative to the supporting crutch when the sliding salient is disposed on the first sidewall, and the main body is positioned at a second position relative to the supporting crutch when the sliding salient is disposed on the second sidewall, wherein the sliding salient crosses the first sidewall and slides on the inclined surface to the second sidewall by a first force, and the sliding salient crosses the second sidewall and slides on the inclined surface to the first sidewall by a second force larger than the first;
• and
• a third bearing shim having three cantilever arms for resting against the second bearing shim, wherein each of the cantilever arms extends outward from a center position of the third bearing shim, and the length of each of the cantilever arms correlates to magnitudes of the first force and the second force.

An electric device, comprising:

• a main body;
• a supporting crutch;
• and
• a pivot mechanism for connecting the main body to the supporting crutch, wherein the main body is rotated around the supporting crutch through the pivot mechanism, and the pivot mechanism comprises:
• a first bearing shim having three limiting salients, each of which has a first sidewall, a second sidewall and two inclined surface tilted from the second sidewall to the first sidewall and disposed at corresponding two sides of the first bearing shim;
• and
• a second bearing shim having six sliding salients alternately protruded toward the corresponding two sides of the second bearing shim, wherein the main body is positioned at a first position relative to the supporting crutch when three of the sliding salients are disposed on the first sidewalls, and the main body is positioned at a second position relative to the supporting crutch when three of the sliding salients are disposed on the second sidewalls,
• wherein three of the sliding salients cross the first sidewalls and slide on the inclined surfaces to the second sidewalls by a first force, and three of the sliding salients cross the second sidewalls and slide on the inclined surfaces to the first sidewalls by a second force larger than the first force.

An electric device, comprising:

• a main body;
• a supporting crutch;
• a pivot mechanism for connecting the main body to the supporting crutch, wherein the main body is rotated around the supporting crutch through the pivot mechanism, and the pivot mechanism comprises:
• a first bearing shim having a limiting salient, which has a first sidewall, a second sidewall and an inclined surface tilted from the second sidewall to the first sidewall;
• a second bearing shim having a sliding salient, wherein the main body is positioned at a first position relative to the supporting crutch when the sliding salient is disposed on the first sidewall, and the main body is positioned at a second position relative to the supporting crutch when the sliding salient is disposed on the second sidewall, wherein the sliding salient crosses the first sidewall and slides on the inclined surface to the second sidewall by a first force, and the sliding salient crosses the second sidewall and slides on the inclined surface to the first sidewall by a second force larger than the first force;
• a third bearing shim having three cantilever arms for resting against the second bearing shim, wherein each of the cantilever arms extends outward from a center position of the third bearing shim, and the length of each of the cantilever arms correlates to magnitudes of the first force and the second force.