Brush type contact material and manufacturing method for the same
AssigneeTanaka Kikinzoku Kogyo K.K.
InventorsKazuo Ueda, Yukimasa Nomura
Life of this patent
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Abstract
The present invention relates to a brush type contact material, including one or more curved metal pawls of which ends come into contact with objects to be contacted. The ends of the pawls have an arc-like cross section in a thickness direction, a curvature radius R1 on a front side from a contact point with the object to be contacted and a curvature radius R2 on a back side from the contact point are formed so as to be R1≧R2, and also both ends in a width direction of the pawl are chamfered. At this time, preferably, R1 is larger than R2 (R1>R2), and R1 divided by R2 (R1/R2) is 3.0 or less. The brush type contact material according to the present invention enables a smoother sliding movement than ever before and can be relatively simply manufactured.
Claims4
A brush type contact material, comprising one or more curved metal pawls for coming into contact with objects to be contacted,
- wherein each metal pawl has a contact end having a contact point;
- wherein a cross section normal to the length of each metal pawl is of substantially constant width and thickness along the length of the metal pawl;
- wherein each metal pawl is concave on a back side from the contact point and convex on a front side from the contact point;
- wherein the contact end of each pawl has a curvature in a thickness direction, including a curvature radius R1 on the front side from the contact point and a curvature radius R2 on the back side from the contact point such that the curvatures R1 and R2 are on opposing sides of the contact point;
- and
- wherein R1≧R2, and R1/R2 is 3.0 or less.
Dependencies are inferred from the claim text.