Speaker voice coil construction
First Claim
1. A speaker comprisingmeans for generating a magnetic field, said means having a gap therein,a voice coil assembly located within said gap, said voice coil assembly includinga bobbin having a longitudinal axis,a first layer of insulation-covered wire pressure-wound on a portion of the outer periphery of said bobbin,a second layer of insulation-covered wire pressure-wound on said first layer of wire, said second layer of wire being located on and between adjacent turns of said first layer of wire, a major portion of each turn of said first and second layers of wire extending in a plane perpendicular to said longitudinal axis and the remaining portion thereof extending in a direction which is oblique to said plane, andmeans for bonding the ends of said wire to said bobbin, anda diaphragm coupled to said voice coil assembly.
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Abstract
A speaker comprising a voice coil assembly including a coil formed by pressure-winding an insulation-covered wire on a portion of the outer periphery of a coil bobbin disposed in the gap of a magnetic field, the beginning and the end of the coil being fixed to the coil bobbin by bonding material or adhesive tape, and a diaphragm coupled to the voice coil assembly, whereby the efficiency and performance of the speaker is enhanced.
22 Citations
6 Claims
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1. A speaker comprising
means for generating a magnetic field, said means having a gap therein, a voice coil assembly located within said gap, said voice coil assembly including a bobbin having a longitudinal axis, a first layer of insulation-covered wire pressure-wound on a portion of the outer periphery of said bobbin, a second layer of insulation-covered wire pressure-wound on said first layer of wire, said second layer of wire being located on and between adjacent turns of said first layer of wire, a major portion of each turn of said first and second layers of wire extending in a plane perpendicular to said longitudinal axis and the remaining portion thereof extending in a direction which is oblique to said plane, and means for bonding the ends of said wire to said bobbin, and a diaphragm coupled to said voice coil assembly.
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5. A speaker comprising
means for generating a magnetic field, said means having a gap therein, a voice coil assembly located within said gap, said voice coil assembly including a bobbin having a longitudinal axis, a first layer of insulation-covered wire pressure-wound on a portion of the outer periphery of said bobbin, a major portion of each turn of said first layer extending in a plane perpendicular to said longitudinal axis and the remaining portion thereof extending in a first direction which is oblique to said plane. a second layer of insulation-covered wire pressure-wound on and between adjacent turns of said first layer, a major portion of each turn of said second layer extending in a plane perpendicular to said longitudinal axis and the remaining portion thereof forming a transition region extending in a second direction which is oblique to said plane and to said first direction, the points at which each turn of said second layer crosses over a corresponding turn of said first layer in said transition region defining a line substantially parallel to said longitudinal axis, and means for bonding the ends of said wire to said bobbin, and a diaphragm coupled to said voice coil assembly.
Specification