Variable resistor
AssigneeAlps Electric Co., Ltd.
InventorsMasato Hatayama, Mitsuru Saitoh
Life of this patent
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Abstract
A variable resistor having a resistor body including a lower layer resistor in which at least carbon fibers and a carbon black are dispersed in a synthetic resin and an upper resistance layer not containing carbon fibers and in which at least a carbon black is dispersed in a synthetic resin, the upper layer being formed on the lower layer. Abrasion of a slider and the resistor body are suppressed to provide a long operation life, that is, a sliding movement life of the variable resistor.
Claims10
A variable resistor comprising:
- a resistor body including:
- a lower resistance layer in which at least carbon fibers and carbon black are dispersed in a synthetic resin;
- and
- an upper resistance layer not containing carbon fibers and in which at least carbon black is dispersed in a synthetic resin, said upper resistance layer being formed on said lower resistance layer;
- and
- a slider disposed to slide on the upper resistance layer of the resistor body.
A variable resistor having a resistor body comprising:
- a lower resistance layer in which at least carbon fibers and carbon black are dispersed in a synthetic resin;
- and
- an upper resistance layer not containing carbon fibers and in which at least carbon black is dispersed in a synthetic resin, said upper resistance layer being formed on said lower resistance layer;
- wherein a thickness of the lower resistance layer is between 0.5 and 1.5 times a diameter of the carbon fibers.
A variable resistor having a resistor body comprising:
- a lower resistance layer in which at least carbon fibers and carbon black are dispersed in a synthetic resin;
- and
- an upper resistance layer not containing carbon fibers and in which at least carbon black is dispersed in a synthetic resin, said upper resistance layer being formed on said lower resistance layer;
- wherein a thickness of the lower resistance layer is between 0.75 and 1.25 times a diameter of the carbon fibers.
Dependencies are inferred from the claim text.