To provide an evaluation method of a contact load of an insulation displacement terminal capable of finding a contact load capable of ensuring reliability of electrical connection to a core wire even when it comes into contact with the core wire on a surface with a base material exposed.
A plurality of the insulation displacement terminals having contact loads different from one another are manufactured in steps S1 and S7. Weather resistance tests are applied in steps S2 and S8. Wires are brought into press contact with the insulation displacement terminals in step S3. A first relationship is obtained in step S4. A second relationship of the insulation displacement terminals with plated layers formed on end faces thereof is obtained in step S5. A first lower limit value is obtained from the first and second relationships in step S6. Wires are brought into press contact with the insulation displacement terminals in step S9. Weather resistance tests are applied in step S10. A third relationship is obtained in step 11. A fourth relationship of the insulation displacement terminals with plated layers formed on end faces thereof is obtained in step S12. A second lower limit value is obtained from the third and fourth relationships in step 13. A contact load satisfying both the first and second lower limit values is defined in step S14.
SHIMIZU TOMOHIKO
Hiroshi Ochi
Sadao Matsumura
Isamu Kakiuchi
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