# US 2019/0319418 A1 · Electromagnetic crimp terminal, manufacturing method of electromagnetic crimp terminal, and connecting terminal > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0319418 A1 - Document ID: US20190319418A1 - Status: Published application - Kind: A1 - Application number: 16/375,205 - Filed: 2019-04-04 - Published: 2019-10-17 - Earliest claimed: 2018-04-12 - Assignees: Yazaki Corporation - Applicants: Yazaki Corporation - Inventors: Makoto KOSHIISHI - Web page: https://patentgrep.com/patent/US20190319418A1 ## CPC - H01R 43/048: Crimping apparatus or processes (H01R43/042 takes precedence) - B23K 20/06: by means of high energy impulses, e.g. magnetic energy - B23K 20/22: taking account of the properties of the materials to be welded - B23K 20/24: Preliminary treatment - H01R 4/183: {for cylindrical elongated bodies, e.g. cables having circular cross-section (H01R4/01 takes precedence)} - B21D 26/14: applying magnetic forces - B23K 2101/32: Wires - B23K 2101/38: Conductors - H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS - B23K: SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM - B21D: WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL (working or processing of wire B21F) ## Abstract An electromagnetic crimp terminal includes an electric wire and a terminal plate. The electric wire includes a conductor portion, an insulation portion which covers the conductor portion, and an exposed portion which is a part of the conductor portion exposed from the insulation portion. The terminal plate includes a crimped portion. The crimped portion is crimped onto the exposed portion. The crimped portion includes a first side edge and a second side edge. A vicinity of the first side edge and a vicinity of the second side edge overlap each other. ## Claims ### Claim 1 An electromagnetic crimp terminal comprising: an electric wire; and a terminal plate, wherein the electric wire includes a conductor portion, an insulation portion which covers the conductor portion, and an exposed portion which is a part of the conductor portion exposed from the insulation portion, wherein the terminal plate includes a crimped portion, wherein the crimped portion is crimped onto the exposed portion, wherein the crimped portion includes a first side edge and a second side edge, and wherein a vicinity of the first side edge and a vicinity of the second side edge overlap each other. ### Claim 2 (depends on 1) The electromagnetic crimp terminal according to claim 1, wherein the crimped portion has substantially σ-shaped cross section in a cross section perpendicular to a direction in which the electric wire extends. ### Claim 3 (depends on 1) The electromagnetic crimp terminal according to claim 1, wherein the crimped portion is formed by a rectangular flat plate portion, wherein the crimped portion includes a cylindrical portion, wherein the cylindrical portion includes an annular conductive circuit configured by overlapping the vicinity of the first side edge and the vicinity of the second side edge each other, wherein the exposed portion is inserted into the cylindrical portion, and wherein the crimped portion is conductively crimped onto the exposed portion by reducing a diameter of the cylindrical portion by an electromagnetic force based on an induced current and an induced magnetic field, the induced current being generated in the cylindrical portion by inserting the cylindrical portion into a discharge coil having a substantially C-shaped cross section and instantaneously flowing a discharge current through the discharge coil, and the induced magnetic field being generated between the discharge coil and the cylindrical portion due to the induced current. ### Claim 4 A manufacturing method of an electromagnetic crimp terminal, the electromagnetic crimp terminal including an electric wire including a conductor portion whose periphery is covered with an insulation portion and a terminal plate including a crimped portion crimped onto the conductor portion, the manufacturing method comprising: preparing the terminal plate including a rectangular flat plate portion to be the crimped portion; forming the flat plate portion into a cylindrical portion, and overlapping a vicinity of a first side edge of the cylindrical portion and a vicinity of a second side edge of the cylindrical portion each other, so that the cylindrical portion configure an annular conductive circuit; inserting an exposed portion, which is a part of the conductor portion of the electric wire exposed by peeling off a part of the insulation portion, into the cylindrical portion; inserting the cylindrical portion into which the exposed portion is inserted into a discharge coil having a substantially C-shaped cross section; causing a discharge current to instantaneously flow through the discharge coil; and reducing a diameter of the cylindrical portion by an electromagnetic force based on an induced current and an induced magnetic field, and conductively crimping the crimped portion onto the exposed portion, wherein the induced current is generated in the cylindrical portion due to the discharge current, and the induced magnetic field is generated between the discharge coil and the cylindrical portion due to the induced current. ### Claim 5 (depends on 4) The manufacturing method according to claim 4, wherein the crimped portion has substantially σ-shaped cross section in a cross section perpendicular to a direction in which the electric wire extends. ### Claim 6 (depends on 4) The manufacturing method according to claim 4, wherein the second side edge is in contact with an inner surface of the cylindrical portion near the first side edge, before reducing the diameter of the cylindrical portion. ### Claim 7 (depends on 4) The manufacturing method according to claim 4, wherein the first side edge is in contact with an outer surface of the cylindrical portion near the second side edge, before reducing the diameter of the cylindrical portion. ### Claim 8 A connecting terminal, comprising: an electric wire including a conductor portion whose periphery is covered with an insulation portion; and a terminal plate including a crimped portion to be crimped onto the conductor portion, wherein the crimped portion is formed by a rectangular flat plate portion, wherein the crimped portion includes a cylindrical portion, wherein the cylindrical portion includes a first side edge and a second side edge, wherein a vicinity of the first side edge and a vicinity of the second side edge overlap each other, wherein the electric wire has an exposed portion which is a part of the conductor portion exposed by peeling off a part of the insulation portion, wherein the exposed portion is inserted into the cylindrical portion, and wherein the second side edge is in contact with an inner surface of the cylindrical portion near the first side edge. ### Claim 9 (depends on 8) The connecting terminal according to claim 8, wherein the crimped portion has substantially σ-shaped cross section in a cross section perpendicular to a direction in which the electric wire extends. ### Claim 10 A connecting terminal, comprising: an electric wire including a conductor portion whose periphery is covered with an insulation portion; and a terminal plate including a crimped portion to be crimped onto the conductor portion, wherein the crimped portion is formed by a rectangular flat plate portion, wherein the crimped portion includes a cylindrical portion, wherein the cylindrical portion includes a first side edge and a second side edge, wherein a vicinity of the first side edge and a vicinity of the second side edge overlap each other, wherein the electric wire has an exposed portion which is a part of the conductor portion exposed by peeling off a part of the insulation portion, wherein the exposed portion is inserted into the cylindrical portion, and wherein the first side edge is in contact with an outer surface of the cylindrical portion near the second side edge. ### Claim 11 (depends on 10) The connecting terminal according to claim 10, wherein the crimped portion has substantially σ-shaped cross section in a cross section perpendicular to a direction in which the electric wire extends.