Bus bar unit and manufacturing method of bus bar unit

Patent metadata

Field	Value
Publication number	US-9997972-B2
Application number	US-201414771708-A
Country	US
Kind code	B2
Filing date	Jan 23, 2014
Priority date	Mar 8, 2013
Publication date	Jun 12, 2018
Grant date	Jun 12, 2018

Abstract

A bus bar of a bus bar unit includes a main body part extended along a circumferential direction of the stator such that a plate thickness direction of the bus bar agrees with an axial direction of the stator; an extension part extended from the main body part in a radial direction of the stator; and a coil connection part provided at a tip of the extension part, the coil connection part being connectable to a winding terminal of the coil. The extension part includes a retained part having surfaces perpendicular to the axial direction of the stator on both sides of the plate thickness direction. The retained part are held by molds for the insert molding of the bus bar when the insulating resin is formed by the insert molding of the bus bar.

First claim

The invention claimed is:

1. A method of manufacturing a bus bar unit including a bus bar, the bus bar having an annular-shaped or an arc-shaped main body part, an extension part extended from the main body part in a radial direction, and a coil connection part provided at a tip of the extension part, the bas bar being configured to pass a current to a coil wound around a stator, by connecting the coil connection part and the coil, the method comprising:
arranging the bus bar onto a lower mold;
holding the extension part by the lower mold and an upper mold; and
performing inserting molding of the bus bar by injecting an insulating resin into a space defined between the lower mold and the upper mold.

Assignees

• Kayaba Industry Co Ltd
• Kyb Corp

Inventors

• Houzumi Nobuji
• Matsumae Tarou
• Kurokawa Yoshiteru
• Sakamoto Suguru
• Takimoto Tohru
• Yamada Shingo

Classifications

• H02K3/50 Primary

  Fastening of winding heads, equalising connectors, or connections thereto · CPC title

• H02K2203/09

  Machines characterised by wiring elements other than wires, e.g. bus rings, for connecting the winding terminations · CPC title

• H02K3/522

  for generally annular cores with salient poles · CPC title

• H02K15/12

  Impregnating, moulding insulation, heating or drying of windings, stators, rotors or machines · CPC title

• H02K15/0062

  Electricity · mapped topic