Key switch with noise reduction capability

A key switch with noise reduction capability, the key switch comprising:

• a base comprising a first extending arm and a second extending arm, an engaging hole being formed on the second extending arm, the first extending arm comprising a first longitudinal axis along a third direction, the second extending arm comprising a second longitudinal axis along a first direction, the third direction being substantially perpendicular to the first direction;
• a circuit board disposed on the base;
• a key cap disposed above the base;
• a supporting mechanism disposed between the base and the key cap, an upper end and a lower end of the supporting mechanism being connected to the key cap and the base respectively to allow the key cap to move relative to the base upwardly and downwardly;
• a link bar comprising a lower linking end;
• and
• a buffer member disposed on the base, the buffer member and the base being two independent components, a restraining structure being formed on the buffer member, the lower linking end movably passing through the restraining structure, the buffer member being made of material softer than material of the base, the buffer member comprising a buffer longitudinal axis, a recess structure, a first engaging portion, a second engaging portion and a buffer end, the buffer end being located at a position away from the first engaging portion, the recess structure being located between the buffer end and the first engaging portion, the second engaging portion protrudes from the buffer end, the first engaging portion and the second engaging portion being located at two opposite ends of the buffer longitudinal axis, the base and the recess structure being adjacent to form the restraining structure when the first engaging portion and the second engaging portion respectively engage with the first extending arm and the second extending arm, the first engaging portion being configured to rotatably engage with the first extending arm, the base and the recess structure are adjacent to form the restraining structure when the buffer member rotates toward the base by rotating engagement of the first engaging portion and the first extending arm to drive the second engaging portion to engage with the second extending arm, the second engaging portion entering into the engaging hole when the second engaging portion engages with second extending arm;
• wherein when the key cap moves relative to the base upwardly and downwardly, the lower linking end is driven to move within the restraining structure correspondingly, so as to reduce noise during movement of the lower linking end relative to the base.

A key switch with noise reduction capability, the key switch comprising:

• a base comprising a first extending arm and a second extending arm, the first extending arm comprising a first longitudinal axis along a third direction, the second extending arm comprising a second longitudinal axis along a first direction, the third direction being substantially perpendicular to the first direction, the second extending arm comprising two engaging protruding portions,;
• a circuit board disposed on the base;
• a key cap disposed above the base;
• a supporting mechanism disposed between the base and the key cap, an upper end and a lower end of the supporting mechanism being connected to the key cap and the base respectively to allow the key cap to move relative to the base upwardly and downwardly;
• a link bar comprising a lower linking end;
• and
• a buffer member disposed on the base, the buffer member and the base being two independent components, a restraining structure being formed on the buffer member, the lower linking end movably passing through the restraining structure, the buffer member being made of material softer than material of the base, the buffer member comprising a buffer longitudinal axis, a recess structure, a first engaging portion, a second engaging portion and a buffer end, the buffer end being located at a position away from the first engaging portion, the recess structure being formed on the buffer end, the second engaging portion comprising two protrusions located at two opposite sides of the buffer end, the first engaging portion and the second engaging portion being located at two opposite ends of the buffer longitudinal axis, the base and the recess structure being adjacent to form the restraining structure when the first engaging portion and the second engaging portion respectively engage with the first extending arm and the second extending arm, the first engaging portion being configured to rotatably engage with the first extending arm, the base and the recess structure being adjacent to form the restraining structure when the buffer member rotates toward the base by rotating engagement of the first engaging portion and the first extending arm to drive the second engaging portion to engage with the second extending arm, the corresponding protrusion engaging with the corresponding engaging protruding portion respectively when the second engaging portion engages with the second extending arm;
• wherein when the key cap moves relative to the base upwardly and downwardly, the lower linking end is driven to move within the restraining structure correspondingly, so as to reduce noise during movement of the lower linking end relative to the base.