STRUCTURE AND METHOD OF LASER-WELDING BONDING, AND HIGH PRESSURE FUEL SUPPLY PUMP HAVING STRUCTURE OF LASER-WELDING BONDING

Title:

STRUCTURE AND METHOD OF LASER-WELDING BONDING, AND HIGH PRESSURE FUEL SUPPLY PUMP HAVING STRUCTURE OF LASER-WELDING BONDING

Document Type and Number:

Japanese Patent JP2013169565

Kind Code:

A

Abstract:

To suppress the scattering of weld spatter generated when welding, gas whose oil attached to a bonding member is evaporated and weld fume in laser-welding of a lap bonded joint of cylinder bonding members.

A structure of a laser welded part is a lap bonded joint of a cylinder bonded member and a cylinder bonding member. Both of the bonding members are temporarily fixed by pressure fitting. A cylinder groove is partially provided with a radial border of the overlapped cylinder members. The pressure-fit part is configured to have a cylinder hollow that is sealed from the outside at both sides of the cylinder groove. A laser is applied to reach from the outside of the cylinder bonding member to the cylinder bonded member to penetrate the cylinder groove of the sealed cylinder hollow. The entire outer periphery of the cylinder bonding member is laser welded to obtain a laser welding bonded part that comprises the lap bonded joint.

Inventors:

HORI TOSHIO
URASHIRO KEIICHI
HASE SATOSHI

Application Number:

JP2012034629A

Publication Date:

September 02, 2013

Filing Date:

February 21, 2012

Export Citation:

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Assignee:

HITACHI AUTOMOTIVE SYSTEMS LTD

International Classes:

B23K26/20; B23K26/16; F02M55/00; F02M59/44

Domestic Patent References:

JPH1034373A	1998-02-10
JPH0368983U	1991-07-08
JP2005279778A	2005-10-13
JP2005292119A	2005-10-20

Foreign References:

US3817805A

1974-06-18

Attorney, Agent or Firm:

Manabu Inoue
Yuji Toda
Shigemi Iwasaki

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