Wire-wound resistor and method for manufacturing same
AssigneeKoa Corporation
InventorsTomohito Imai, Shun Kato, Yoshihisa Nakaji, Yoichi Sakai
Life of this patent
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Abstract
To provide a wire-wound resistor provided with high reliability and that retains the basic functionality of the wire-wound resistor, and a method for manufacturing the same. A wire-wound resistor in which a resistor wire is wound onto an external periphery of a core (11) obtained by bundling fibrous insulators, and a connection terminal (13) is attached to both ends of the core (11) and connected to the resistor wire (12a), wherein the core (11) is impregnated with a binder in the portion (11a) in the vicinity of the external periphery. The binder (1) is preferably not included in a center portion (11b) of the core (11).
Claims13
A wire-wound resistor in which a resistor wire is wound onto an external periphery of a core obtained by bundling fibrous insulators, and a connection terminal is attached to both ends of the core and connected to the resistor wire,
- wherein the core is impregnated with a binder in the portion in the vicinity of the external periphery, and
- wherein the core is impregnated with the binder in 5%-70% portion of the core in the cross section.
A method for manufacturing a wire-wound resistor comprising:
- forming a long length core obtained by bundling fibrous insulators;
- winding a resistor wire onto an external periphery of the core;
- forming a resistor element by cutting the core into a prescribed size;
- and
- attaching a connection terminal at both ends of the resistor element;
- wherein the core is impregnated with a binder in the portion in the vicinity of the external periphery, and
- wherein the core is impregnated with the binder in 5%-70% portion of the core in the cross section.
Dependencies are inferred from the claim text.