A shield tape is provided in a hybrid cable. The shield tape includes one pair of differential wirings and a shield tape. The shield tape surrounds the one pair of differential wirings. The shield tape includes a substrate layer and a shield layer. The substrate layer has insulating properties. The shield layer is disposed at the opposite side of the one pair of differential wirings with respect to the substrate layer.
H01B 11/06 - Câbles à paires ou quartes torsadées pourvus de moyens propres à réduire les effets de perturbations électromagnétiques ou électrostatiques, p.ex. écrans
H01B 11/22 - Câbles comprenant à la fois au moins un conducteur de l'électricité et des fibres optiques
2.
Electrode wire for electrical discharge machining and method of manufacturing electrode wire for electrical discharge machining
To provide an electrode wire for electrical discharge machining including β-brass and γ-brass arranged on an outer peripheral surface of a core and a method of manufacturing the electrode wire, capable of enhancing wire connection performance and cutting down manufacturing cost while trying to increase a processing speed.
The electrode wire for electrical discharge machining according to this invention comprises: an external layer including β-brass and γ-brass; and a core having an undulating shape formed at a boundary surface with the external layer. The β-brass and the γ-brass are arranged densely and sparsely at the boundary surface of the undulating shape. The method of manufacturing an electrode wire for electrical discharge machining according to this invention comprises: a thermal processing step of executing thermal process on a base material under a predetermined thermal processing condition, the base material having a core with a zinc-coated surface; and a wire drawing step of drawing a base wire under a predetermined wire drawing condition provided with β-brass and γ-brass formed at the surface of the core by the thermal process to make the γ-brass reach the core, thereby forming a boundary surface of the core with an external layer into an undulating shape.
B23K 35/02 - Baguettes, électrodes, matériaux ou environnements utilisés pour le brasage, le soudage ou le découpage caractérisés par des propriétés mécaniques, p.ex. par la forme
B21C 1/00 - Fabrication des tôles, fils, barres, tubes métalliques ou d'autres produits semi-finis similaires par étirage
This aluminum wire (2) comprises: a core wire (4) that is formed of aluminum or an aluminum alloy and has an outer circumferential surface (6) on which an oxide coating film (7) is formed, said oxide coating film (7) being thicker than a natural oxide coating film; and an insulating cover (5) that covers the core wire (4). This harness (1) comprises: an aluminum wire (2) which comprises a core wire (4) and an insulating cover (5) that covers the core wire (4), said core wire (4) being formed of aluminum or an aluminum alloy and having an outer circumferential surface (6) on which an oxide coating film (7) that is thicker than a natural oxide coating film is formed; and a crimp terminal (3) which is formed of copper or a copper alloy and is crimped onto the core wire (4) of the aluminum wire (2).
H01B 7/28 - Protection contre les dommages provoqués par des facteurs extérieurs, p.ex. gaines ou armatures par l'humidité, la corrosion, les attaques chimiques ou les conditions atmosphériques
H01B 7/00 - Conducteurs ou câbles isolés caractérisés par la forme
H01B 13/012 - Appareils ou procédés spécialement adaptés à la fabrication de conducteurs ou câbles pour fabriquer des faisceaux de fils
H01R 4/18 - Connexions conductrices de l'électricité entre plusieurs organes conducteurs en contact direct, c. à d. se touchant l'un l'autre; Moyens pour réaliser ou maintenir de tels contacts; Connexions conductrices de l'électricité ayant plusieurs emplacements espacés de connexion pour les conducteurs et utilisant des organes de contact pénétrant dans l'isolation effectuées uniquement par torsion, enroulage, pliage, sertissage ou autre déformation permanente par sertissage
H01R 4/24 - Connexions utilisant des organes de contact pénétrant dans, ou transperçant, l'isolation ou les brins du câble
H01R 4/62 - Connexions entre des conducteurs constitués de matériaux différents; Connexions entre ou avec des conducteurs en aluminium avec ou sans âme en acier
H01R 43/01 - Appareils ou procédés spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation de connecteurs de lignes ou de collecteurs de courant ou pour relier les conducteurs électriques pour connecter des conducteurs non dénudés à des pièces de contact ayant des bords coupant l'isolation
Provided are an electrode wire (1) for electrical discharge machining, which has β brass (3) and γ brass (2) arranged on the outer peripheral surface of a core material (4), and with which the wire connection properties can be improved while improving the machining speed, and manufacturing costs minimized; and a method for manufacturing the same. This electrode wire for electrical discharge machining has an outer layer including β brass and γ brass, and a core material, the interface of which with respect to the outer layer has an undulating contour, the β brass and γ brass being densely arranged at the undulating interface. The method for manufacturing the electrode wire for electrical discharge machining includes a heat treatment step for heat treatment, under prescribed heat treatment conditions, of a parent material produced by zinc-coating the surface of the core material, and a wire drawing step for subjecting the parent material, in which β brass and γ brass have been formed on the surface of the core material through heat treatment, to a process under prescribed wire conditions to induce the γ brass to reach the core material, and form the interface of the core material and the outer layer to an undulating contour.
Provided is an electrode wire for high-speed machining which prevents short circuiting between the electrode wire and an object being machined, and not only increases machining speed but also suppresses loss in machining precision and generation of fine lines and metal powder on the machined surface, by preventing granular matter of a copper-zinc diffused alloy formed on the outer peripheral surface of the electrode wire from detaching from a core wire. In a step in which a wire material that has on the outer peripheral surface a copper-zinc alloy layer and a zinc layer produced by thermal diffusion is drawn and reduced to the diameter of a product, the copper-zinc alloy layer is reliably crushed into granular matter and the diffused alloy layer and the zinc layer are integrated with the core wire by embedding the granular matter in the outer peripheral surface of the core wire, and the diffused alloy layer and the zinc layer are therefore prevented from detaching from the core wire. In addition, since cracks in the copper-zinc alloy layer generated in the wire drawing step are covered by a thin zinc film, the wire is drawn at a temperature favorable to the ductility of zinc.
Conventionally, countermeasures have been taken to alleviate voltage surges with a motor that is driven by an inverter, wherein a filter is inserted so as to minimize an excessive voltage surge that is caused by a switching operation of a switching element within the inverter and occurs upon the power supply terminal of the motor. A problem, however, is that, particularly with applications that generate large drive currents, the volume of the inductor increases, and power loss, which occurs in the inductor or the resistor that configure the filter circuit, grows in the extreme, leading to an increase in the size of the overall device and an increase in the amount of power loss. Disclosed is a protocol for suppressing voltage surges and recovering from energy surges without loss of power, a configuration of a representative embodiment whereof has a main line, between the inverter and the motor, branching from each respective terminal thereof and connecting to an auxiliary line at each branch thereof, an alternating current terminal of a rectifier connected to the auxiliary electric line, a capacitor further connected upon both ends of a direct current terminal of the rectifier, and finally, the direct current terminal thereof being connected to a direct current terminal of the inverter.
H02M 7/48 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande
H02H 9/04 - Circuits de protection de sécurité pour limiter l'excès de courant ou de tension sans déconnexion sensibles à un excès de tension
7.
High frequency leakage current return wire-contained motor drive cable, low inductance return wire-contained unshielded cable, and motor drive control system using the cables
A high frequency (HF) leakage current return wire-contained motor drive cable configured in a manner that one or multiple drive dielectric core wires and one or multiple HF leakage current return wires are arranged adjacent to and in close contact. Concurrently, the drive dielectric core wires and the HF leakage current return wires are arranged substantially parallel to the longitudinal direction and are stranded; and a sheath is provided without a shield being provided outside of the strand wires.
A high-speed shielded flat cable is provided with a flat cable configured by connecting at least one signal line formed by covering the outer periphery of a conductor with an outer peripheral insulator and plural ground lines each formed by covering the outer periphery of a conductor with a conductive resin in a plane, and shield members closely attached to the top and bottom of the flat cable. The ground lines are disposed on both sides in the width direction of the flat cable and electrically connected to the upper and lower shield members. The flat cable is vertically and laterally insulated from external noise since the ground lines on both sides are electrically connected to the upper and lower shield members, whereby the flat cable is insulated by only the shield members without using a sheathe.
H01B 7/17 - Protection contre les dommages provoqués par des facteurs extérieurs, p.ex. gaines ou armatures
H01B 11/00 - Câbles ou conducteurs de communication
H01B 11/06 - Câbles à paires ou quartes torsadées pourvus de moyens propres à réduire les effets de perturbations électromagnétiques ou électrostatiques, p.ex. écrans
9.
ELECTRODE WIRE FOR WIRE ELECTRIC DISCHARGING, METHOD FOR MANUFACTURING THE ELECTRODE WIRE, AND APPARATUS FOR MANUFACTURING BUS LINE THERE OF
This invention provides an electrode wire for wire electric discharging, comprising a hot dip galvanizing layer (3) on the outer peripheral face of a core wire (1) formed of copper or a copper alloy. The electrode wire comprises a relatively thin thermal diffusion layer (2) produced by mutual thermal diffusion at the boundary between the hot dip galvanizing layer (3) and the core wire (1) and having a zinc concentration gradient. Copper or the copper alloy constituting the core wire (1) and a relatively thick pure zinc layer (3) are located respectively on the inside and outside of the thermal diffusion layer (2). In the manufacture of the electrode wire, cracking does not occur in the electrode wire. The thickness of the copper-zinc alloy layer, the gradient of the zinc concentration, and the thickness of the pure zinc layer (3) as the outermost layer can be regulated by properly selecting the temperature and immersion time of the hot plating tank (5). A jet stream from a bath surface pure zinc forming/wiping apparatus (8) provided in a core wire pull-up position in the plating tank (5) can bring the zinc bath surface to pure zinc and, at the same time, can prevent sagging and uneven thickness.
MOTOR DRIVE CABLE WITH HIGH FREQUENCY LEAK CURRENT RETURN WIRE, NONSHIELD CABLE WITH LOW INDUCTANCE RETURN WIRE, AND MOTOR DRIVE CONTROL SYSTEM USING THAT CABLE
[PROBLEMS] Recently, a quicker rising of pulse incident to higher speed/higher efficiency inverter begins to have an impact on stray capacity in a motor, and a generated current leaking to a peripheral device has a risk to cause an erroneous operation of the peripheral device. [MEANS FOR SOLVING PROBLEMS] A motor drive cable with a high frequency leak current return wire in which the inductance of a high frequency leak current return wire (5) is reduced by arranging an insulated core wire (2) for driving consisting of a plurality of lines in close proximity to and adjacent to a high frequency leak current return wire (5) consisting of one to a plurality of lines, and, at the same time, the insulated core wires for driving and the high frequency leak current return wires (5) are arranged substantially in parallel in the length direction and stranded before a sheath (8) is applied to the outside of the stranded wires with no intervention of a shield.
H01B 7/00 - Conducteurs ou câbles isolés caractérisés par la forme
H01B 7/17 - Protection contre les dommages provoqués par des facteurs extérieurs, p.ex. gaines ou armatures
H01B 7/30 - Conducteurs ou câbles isolés caractérisés par la forme avec dispositions pour réduire les pertes dans les conducteurs transmettant du courant alternatif, p.ex. dues à l'effet pelliculaire
brevets
