Halogen-free flame-retardant wire for pressure welding and method of attaching the same
A crimping connection and wire technology, which is applied to the field of halogen-free flame retardant wire for crimping and its connection, can solve the problems of reduced wire holding force of the connector, wire falling off, insufficient insulation coating elasticity and mechanical properties, etc. The effect of reducing the wire holding force, preventing easy detachment, and eliminating poor continuity
Inactive Publication Date: 2013-05-15
HITACHI CABLE +1
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Problems solved by technology
[0004] However, in the halogen-free wire that uses a halogen-free material for the insulation coating, the rubber-like elasticity and mechanical properties of the insulation coating are insufficient, so the external force applied when the wire is inserted into the connector and the crimp connection is performed , easily deformed in the insulation coating of the wire
When deformation occurs in the insulation covering, the wire holding force of the connector is reduced, and the wire is likely to fall out of the connector, which may cause poor conduction
Method used
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[0034] exist figure 1shows the halogen-free flame-retardant wire 5 for crimping, which is formed by setting insulation coating 4 on the conductor 3 of 6 other wire strands 2 concentrically twisted around the center wire strand 1, and the halogen-free wire for crimping The flame-retardant electric wire 5 is inserted and fitted into a not-shown connector and used for crimp connection. The structure of the conductor 3 of the electric wire 5 is called a 6-square precision structure in which 6 wire strands are arranged around the center wire strand. When all the wire strands are ordinary wires with the same diameter, it is the most resistant to external force. , Difficult to deform structure. In this electric wire 5 , the outer diameter of the central conductor strand 1 is formed larger than that of the other conductor strands 2 around the central conductor strand, and spaces 6 are formed between adjacent other conductor strands 2 . Regarding the degree of the gap 6, the outer di...
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Abstract
The invention provides a halogen-free flame-retardant wire for pressure welding and method of attaching the same. The worry about bad conducting is eliminated by restraining the instance of deformation generated in the insulation cladding of the halogen-free wire in the terminal machining of the wires as a consequence of pressure welding jogged wires in the connector and applying external force during the pressure welding connection, restraining the reducing of the holding power of the wires and preventing the instance that the wires are easily to break off from the connector. One kind of halogen-free flame-retardant wire is formed by setting up insulation cladding on the conductor concentrically stranded with a plurality of wire strands, and is used after being inserted and jogged to theconnector for processing pressure welding connection. In the halogen-free flame-retardant wire, the external diameter of the center conductor strand is formed to be larger than the external diameter of other wire strands surrounding the center conductor strand, and gaps are formed between the adjacent other wire strands.
Description
technical field [0001] The invention relates to a halogen-free flame-retardant wire for crimping with excellent terminal processing performance and a connection method thereof. Background technique [0002] At present, polyvinyl chloride (PVC) is mainly used for insulating coating of electric wires for equipment. PVC has rubber-like elasticity and excellent mechanical properties, so it has a strong ability to resist deformation caused by external force when inserting a mated wire into a connector and crimping connection in the terminal processing of the wire. And it also has strong resistance to damage during wiring. However, PVC releases harmful halogen gas when burned, so it is the process of transferring to halogen-free. Halogen-free materials lack rubber-like elasticity compared to PVC and, moreover, lack mechanical properties. Therefore, when a halogen-free material is used for the insulating coating of electric wires, quality improvement such as careful attention to...
Claims
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IPC IPC(8): H01B7/00H01B7/295H01B5/08H01R4/18
Inventor 福地胜一小野伸树
Owner HITACHI CABLE