NIPPLE FOR ELECTRODE

Japanese Patent JP3672220

B2

PROBLEM TO BE SOLVED: To relax stress in the screwed part between a socket and a nipple, and absorb thermal expansion difference to prevent the longitudinal and lateral breakage of an electrode by forming a groove on the circular end surface of the nipple facing the bottom of the socket, and forming a standing circumferential wall surface with the groove and the nipple end side surface.
SOLUTION: A groove 5 is formed in the outer circumferential part on a circular end surface of a nipple 3 facing the bottom surface 2A of a socket 2. A standing circumferential wall surface 4 is formed between the groove 5 and the end side surface 6 of the nipple 3. Stress of the screwed part between the socket 2 and the nipple 3 is relaxed, and the thermal expansion difference between an electrode 1 and the nipple 3 is absorbed to prevent break in an electrode connecting part. The end surface thickness (t) in the circumferential wall surface 4 is made 1% or more of the diameter of a circular end surface 3A to prevent the breakage in the standing part, and made less than 30% to prevent the longitudinal breakage and lateral breakage of the electrode 1. The end surface thickness (t) is specified to 1-30% of the diameter of the circular end surface 3A.

JPS593517	[Title of the device] The nipple for black lead electrode connection
JP3002356	[Title of Invention] Upper electrode connecting device

Seiji Baba
Tohru Kida

JP15552598A

July 20, 2005

June 04, 1998

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Tokai Carbon Co., Ltd.

H05B7/14; (IPC1-7): H05B7/14

JP567115B2
JP4621741Y1
JP56104098U
JP6224957Y2
JP591357Y2

Yasuo Fukuda
Kenji Akatsuka

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