Winding device and method for binding wire material to terminal

• US 9,607,761 B2
• Filed: 07/16/2013
• Issued: 03/28/2017
• Est. Priority Date: 08/08/2012
• Status: Active Grant

• Current Assignee: Nittoku Engineering Co., Ltd
• Original Assignee: Nittoku Engineering Co., Ltd
• Inventors: Saito, Tatsuya
• Primary Examiner(s): MARCELO, EMMANUEL MONSAYAC
• Application Number:
  US14/403,469
• Publication Number:
  US 20150115092A1
• Time in Patent Office: 1,351 Days
• US Class Current: 1/1
• CPC Class Codes: H01F 41/076 Forming taps or terminals while winding, e.g. by wrapping or soldering the wire onto pins, or by directly forming terminals from the wire
• CPC Class Codes: H01F 41/098 Mandrels; Formers
• CPC Class Codes: H01R 43/033 for wrapping or unwrapping wire connections

Abstract

A winding device includes a wire cutting mechanism for cutting the wire wound around the winding target member in the vicinity of the terminal, and a wire binding mechanism for winding, around the terminal, the end portion of the wire wound around the winding target member and cut by the wire cutting mechanism. The wire binding mechanism includes a cylindrical member through which the terminal is insertable, and a rotating mechanism for rotating the cylindrical member about the terminal. A protrusion is formed at a distal end of the cylindrical member so as to protrude in an axial direction of the cylindrical member.

Claims

1. A winding device, comprising:

a chuck capable of gripping a winding target member comprising a winding drum around which a wire is to be wound, and a terminal around which the wire is to be bound;

a nozzle for feeding the wire toward the winding target member;

a binding member for locking thereon an end portion of the wire fed from the nozzle;

a winding mechanism for rotating the chuck together with the binding member so as to wind, around the winding target member, the wire fed from the nozzle;

a wire cutting mechanism for cutting the wire wound around the winding target member to form another end portion of the wire; and

a wire binding mechanism for winding, around the terminal, the another end portion of the wire wound around the winding target member and cut by the wire cutting mechanism, wherein

the wire binding mechanism includes

a cylindrical member through which the terminal is insertable, and

a rotating mechanism for rotating the cylindrical member about a center of the terminal that serves as a rotation center;

the cylindrical member includes a protrusion formed at a distal end of the cylindrical member so as to protrude in an axial direction of the cylindrical member; and

the protrusion has a circular cross section having an outer diameter smaller than a thickness of a portion of the cylindrical member, the protrusion is formed at a position distant from an inner peripheral surface of the cylindrical member so as to sandwich the wire together with the terminal.

2. A winding device, comprising:

a chuck capable of gripping a winding target member comprising a winding drum around which a wire is to be wound, and a terminal around which the wire is to be bound, the terminal including a cutout into which the wire to be bound is fitted;

a nozzle for feeding the wire toward the winding target member;

a binding member for locking thereon an end portion of the wire fed from the nozzle;

a winding mechanism for rotating the chuck together with the binding member so as to wind, around the winding target member, the wire fed from the nozzle;

a wire cutting mechanism for cutting the wire wound around the winding target member to form another end portion of the wire; and

a wire binding mechanism for winding, around the terminal, the another end portion of the wire wound around the winding target member and cut by the wire cutting mechanism, wherein

the wire binding mechanism includes

a cylindrical member through which the terminal is insertable, and

a rotating mechanism for rotating the cylindrical member about the terminal;

the cylindrical member includes a protrusion formed at a distal end of the cylindrical member so as to protrude in an axial direction of the cylindrical member; and

the protrusion has a circular cross section and is formed at a position distant from an inner peripheral surface of the cylindrical member so as to sandwich the wire together with the terminal.

3. A method of binding, around a terminal of a winding target member, a wire wound around the winding target member including the terminal, the method comprising:

aligning an end portion of the wound wire along the terminal;

moving, relative to each other, the terminal and a cylindrical member including a protrusion having a circular cross section and protruding from a distal end of the cylindrical member in an axial direction of the cylindrical member, so that the terminal is inserted into the cylindrical member, the protrusion having an outer diameter smaller than a thickness of a portion of the cylindrical member;

holding the end portion of the wound wire in abutment against the protrusion; and

rotating the cylindrical member about a center of the terminal that serves as a rotation center so as to bind, around the terminal at a position distant from an inner peripheral surface of the cylindrical member, the end portion of the wound wire that is held in abutment against the protrusion.

4. The method of binding a wire around a terminal according to claim 3, wherein the terminal and the cylindrical member are moved in separate directions relative to each other with the rotating the cylindrical member.

5. The method of binding a wire around a terminal according to claim 3, wherein the cylindrical member is moved away from the terminal during the rotating the cylindrical member.