Electricity: conductors and insulators – Conduits – cables or conductors – Combined
Reexamination Certificate
2000-02-04
2002-09-17
Nguyen, Chau N. (Department: 2831)
Electricity: conductors and insulators
Conduits, cables or conductors
Combined
C174S128100, C174S12900B
Reexamination Certificate
active
06452101
ABSTRACT:
TECHNICAL FIELD
The present invention relates to a novel multi-core conductive wire to be used for various sorts of electric equipment, and more particularly to a multi-core conductive wire having a novel terminal and its manufacturing method.
BACKGROUND ART
In the prior art, various methods have been used as a processing method of a terminal portion of a multi-core conductive wire (called conductive wire and multi-core wire) to be used in electric equipment. As called a multi-core conductive wire, since a large number of wires are used in the conductive wire, a simple method of processing a terminal portion in such a multi-core conductive wire has not been yet established, being in difficulties.
On the other hand, in the processing of the terminal portion of the multi-core conductive wire, also such technology is demanded that other material wrapping the multi-core conductive wire is not used but the processing can be performed by only the multi-core conductive wire.
As a method of processing a terminal portion in the prior art, when a relatively small number of multi-core conductive wires are used, the conductive wires are fixedly secured to each other using a resistance welder. When a large number of multi-core conductive wires are used, the fixing by the resistance welder is restricted. Therefore as a fixing method in the present state, plating is applied to the individual multi-core conductive wires and the terminal portion is fixedly secured by the resistance welder utilizing the plating.
Respective methods have some merits and demerits. For example, with the former, if the wires are welded with each other, the wires are heated up to the processing temperature which may attain to the melting point thereof. Therefore the thermal damage of the wires themselves becomes great, resulting in increase of the resistance being fatal as the electric equipment. Also with the latter, since the plating is applied to the individual wires, the price of the wires themselves becomes expensive. Further flexibility required as other factor is deteriorated due to the plating film and the fixing by the resistance welding.
As above described, any method of processing a terminal portion in the prior art has some disadvantages. As a result, it is difficult to process a terminal portion of a multi-core conductive wire with high quality.
In order to connect a terminal portion to other connection terminal, such a method is generally performed that a conductive wire is inserted in a connecting conductor terminal, and the terminal having lateral spread and the conductive wire are joined with each other by means of soft soldering or caulking. That is, a conductive wire peeled off an insulation tube is inserted into a connecting conductor terminal and is soldered by means of soft soldering. Otherwise, a conductor wire peeled off an insulation tube is inserted into a connecting conductor terminal and is pressure-contacted for connection by a caulking machine. The above-mentioned connection in the processing of the terminal portion of the multi-core conductive wire is performed by other material for wrapping the multi-core conductive wire.
Japanese Patent Laid-open No. Hei 1-292775 discloses a method that an end portion of a multi-core conductive wire is previously inserted in a metal cylinder, and the metal cylinder is processed and molded into a terminal. Also Japanese Patent Laid-open No. Sho 55-113279 discloses that an end portion of a multi-core conductive wire is bundled by a wire, and then is subjected to pressuremolding into a flat end portion and is brazed with other conductor by resistance heating.
In rotary machines such as a motor or an AC generator, or electric equipment for electric facilities of an automobile, for a breaker or the like, in order to exhibit functions respectively, multi-core conductive wires are used widely as conductive wires. Processing of a terminal portion plays a very important role. Two methods are used in processing of a terminal portion. One is the case that a terminal portion of a conductive wire is connected to other connection terminal as above described, and the other is the case that a terminal portion of a conductive wire is fixedly secured and is treated as a single article. Even in a single article of the latter, it may sometimes be coupled with other conductor terminal. The multi-core conductive wires are used in various sorts of electric equipment. Attendant on this, various sorts of conductor wires are applied. That is, there are conductive wires being different from each other in the diameter of wire, the number of wires or the like. Therefore it is desirable that processing of terminal portions of these conductive wires be easily performed.
When the number of the conductive wires in the terminal portion is in the range of three to a large number (for example, 10,000), and moreover a range of the wire diameter is, for example, from 0.10 mm to 1.5 mm, approximately, it is very difficult that all different conductive wires are fixedly secured together in the method of the prior art. Thus such structure for a terminal portion with high reliability has been desired strongly that terminal portions of many conductive wires having wire diameters ranging from smaller one to larger one can be fixedly secured without raising the heating temperature in the terminal portions if possible and without applying the plating or the like to the wires if possible.
The methods disclosed in Japanese Patent Laid-open No. Hei 1-292775 and Japanese Patent Laid-open No. Sho 55-11327 have problems in that the coupling force between the wires is weak and further the number of the manufacturing processes is much.
An object of the present invention is to provide a multi-core conductive wire having the small number of manufacturing processes, a terminal with high strength, and a method of manufacturing the multi-core conductive wire.
DISCLOSURE OF INVENTION
The present invention provides a multi-core conductive wire wherein in such irregular and uneven state that a molded end portion of a multi-core conductive wire or individual strands of the multi-core conductive wire are partially entangled with each other in disorder, the multi-core conductive wire is subjected to compression-molding, pressure-molding or plastic working.
The present invention provides a multi-core conductive wire wherein in such irregular and uneven state that a molded end portion of a multi-core conductive wire or individual strands of the multi-core conductive wire are partially entangled with each other in disorder, the multi-core conductive wire is subjected to processing or molding in similar manner to that as above described, and a hole or the like to enable connection to other connection terminal is processed.
The present invention provides a multi-core conductive wire wherein in such irregular and uneven state that a molded end portion of the multi-core conductive wire is entangled or the multi-core conductive wire is entangled with a molding assisting material in disorder, the multi-core conductive wire is subjected to processing or molding, and a hole or the like to enable connection to other terminal is processed.
As a molding assisting material as above described, preferably a material is selected from the group of consisting of copper, tin, lead, silver and indium and molded in linear shape, powder state, band shape, plating, thermal spraying or the like.
For a multi-core conductive wire which has a wire diameter ranging from 0.01 mm to 1.5 mm and the number of wire not less than 30 preferably not less than 100, the wire material of Cu, Al, Ag, Au or the like, may be used.
In the molded terminal structure of the present invention, it is preferable that the conductor wires being different in the wire diameter be combined, and that different wire materials be combined.
The present invention is characterized in that the multi-core conductive wire with the terminal portion subjected to molding as above described is connected to other conductor terminal.
The present invention provides a method of manufac
Haramaki Takashi
Kojima Yoshitaka
Sakurai Izumi
Antonelli Terry Stout & Kraus LLP
Nguyen Chau N.
LandOfFree
Multi-core conductive wire and a method of manufacturing the... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multi-core conductive wire and a method of manufacturing the..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-core conductive wire and a method of manufacturing the... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2861589