Wire with terminal having a core crimping portion with enlarged diameter portion and a recess in the enlarged diameter portion

• US 10,498,048 B2
• Filed: 07/11/2018
• Issued: 12/03/2019
• Est. Priority Date: 08/01/2017
• Status: Active Grant

• Current Assignee: Autonetworks Technologies, Ltd. (Sumitomo Corporation), Sumitomo Electric Industries Limited (Sumitomo Corporation), Sumitomo Wiring Systems Limited (Sumitomo Corporation)
• Original Assignee: Autonetworks Technologies, Ltd. (Sumitomo Corporation)
• Inventors: Washio, Kazuhiro, Miyamoto, Kenji, Mochizuki, Taiji, Nishimura, Naoya, Shimada, Takanobu
• Primary Examiner(s): Patel, Tulsidas C
• Assistant Examiner(s): Leigh, Peter G
• Application Number:
  US16/032,216
• Publication Number:
  US 20190044252A1
• Time in Patent Office: 510 Days
• Field of Search: 439877, 439878
• CPC Class Codes: H01R 4/185 combined with a U-shaped insulation-receiving portion
• CPC Class Codes: H01R 4/188 having an uneven wire-receiving surface to improve the contact
• CPC Class Codes: H01R 4/62 Connections between conductors of different materials; Connections between or with aluminium or steel-core aluminium conductors H01R4/68 takes precedence
• CPC Class Codes: H01R 4/70 Insulation of connections end caps H01R4/22
• CPC Class Codes: H01R 43/048 Crimping apparatus or processes H01R43/042 takes precedence
• CPC Class Codes: H01R 43/0486 with force measuring means
• CPC Class Codes: H01R 43/16 for manufacturing contact members, e.g. by punching and by bending

Abstract

A wire with terminal (10) includes at least one wire (11) having a core (13) and a terminal (12) connected to the wire (11). The terminal (12) includes a wire barrel (16) to be caulked and crimped to the core (13). At least one end part of the wire barrel (16) in an extension direction of the wire (11) is provided with an enlarged diameter portion (20) enlarged in diameter toward the one end part. At least one recess (24E) is provided at a position corresponding to the enlarged diameter portion (20) and in a region configured to come into contact with the core (13) in a placing surface (23) of the wire barrel (16) where the core (13) is arranged.

Claims

1. A wire with terminal, comprising:

at least one wire including a core; and

a terminal connected to the wire;

wherein;

the terminal includes a core crimping portion to be caulked and crimped to the core;

at least one end part of the core crimping portion in an extension direction of the wire is provided with an enlarged diameter portion enlarged in diameter toward the one end part; and

at least one recess is provided at a position corresponding to the enlarged diameter portion and in a region configured to come into contact with the core in a placing surface of the core crimping portion where the core is arranged.

2. The wire with terminal of claim 1, wherein the terminal is a splice terminal to which a plurality of the wires are connected.

3. The wire with terminal of claim 2, wherein the at least one enlarged diameter portion comprises two large diameter portions provided respectively on opposite end parts of the core crimping portion in the extension direction.

4. A wire with terminal, comprising:

at least one wire including a core; and

a terminal connected to the wire, the terminal includes a core crimping portion to be caulked and crimped to the core;

at least one end part of the core crimping portion in an extension direction of the wire is provided with an enlarged diameter portion enlarged in diameter toward the one end part; and

at least one recess is provided at a position corresponding to the enlarged diameter portion and in a region configured to come into contact with the core in a placing surface of the core crimping portion where the core is arranged, wherein;

a compression ratio of the core is defined as a percentage of a cross-sectional area when a region surrounded by the placing surface of the core crimping portion cut along a plane perpendicular to the extension direction to a cross-sectional area of the core before the core crimping portion is crimped,

the compression ratio at an innermost position of the enlarged diameter portion in the extension direction is 50% to 80%; and

the compression ratio at an outermost position of the enlarged diameter portion in the extension direction is 80% to 110%.

5. The wire with terminal of claim 4, wherein the terminal is a splice terminal to which a plurality of the wires are connected.

6. The wire with terminal of claim 5, wherein the at least one enlarged diameter portion comprises two large diameter portions provided respectively on opposite end parts of the core crimping portion in the extension direction.