Conductor cutting method and coil parts
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsTosiaki Hirose, Saburo Koresawa, Kazunori Nishida
Life of this patent
Estimating the term…
Abstract
By applying a tension to the conductor to be cut off, and locally heating the intended cutting position to provide a temperature difference of 20.degree. to 300.degree. from other parts, the cutting position is lowered in tensile force as compared with other parts, and by applying a tension, the concentrated stress is added, and a large distortion is generated to cut off, so that the cutting position may be stabilized.
Claims12
A method of cutting a part of a conductor comprising, applying a tension to a part of a conductor and cutting in the state of temperature difference of 20.degree. to 300.degree. C. provided from other parts of the conductor by heating the cutting position of the conductor.
A method of cutting a part of a conductor comprising, applying a bending stress and a tension to a part of and cutting in the state of temperature difference of 20.degree. to 300.degree. C. provided from other parts by heating the cutting position of the conductor.
A coil part comprised of a conductor, in which a short, undesired portion of the conductor is not left over at a terminal, wherein said conductor is cut to length by applying a bending stress and a tension to the conductor while a cutting position of the conductor is in the state of temperature difference of 20.degree. to 300.degree. C. provided from other parts of the conductor by heating the cutting position of the conductor.
A coil part including a terminal comprised of a conductor cut to length, said coil part not having a short undesired portion of the conductor left over at the terminal, said coil part made by a process comprising:
- (a) heating a cutting position of a conductor so that temperature difference of the cutting position is 20.degree. to 300.degree. C. from other parts of the conductor, and
- (b) applying a bending stress and a tension to the conductor while maintaining the temperature difference of 20.degree. to 300.degree. of the cutting position of the conductor, thereby producing the coil part in which the short, undesired portion of the conductor is not left over at the terminal.
Dependencies are inferred from the claim text.