VARIABLE DAMPER - HONDA MOTOR CO LTD

Title:

VARIABLE DAMPER

Document Type and Number:

WIPO Patent Application WO/2013/031170

Kind Code:

A1

Abstract:

[Problem] To provide a solenoid-type variable damper that improves piston strength prevents disconnection of the electromagnetic coil, and the like. [Solution] A piston (16) comprises a piston body (30), an expansion-side valve plate (41), a contraction-side valve plate (42), an electromagnetic coil (43), and a bolt (44). The piston body (30) is cast as a single piece and is manufactured through a powder metallurgy method, a die casting method, or the like, using a ferrite-based or other ferromagnetic material as a raw material, and comprises a cylindrical outer yoke (31) that is in slidable contact with the inner periphery of a cylinder (12); a columnar inner yoke (34), the outer periphery of which faces the inner periphery of the outer yoke (31) across first and second gaps (32, 33); and a connecting section (35) in the central part in the axial direction of the piston (16), which connects the outer yoke (31) and the inner yoke (34) and divides the first and second gaps (32, 33) from each other. The electromagnetic coil (43) is fit into the second gap (33) of the piston body (30).

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Inventors:

NAKAJIMA KIYOSHI (JP)

Application Number:

PCT/JP2012/005360

Publication Date:

March 07, 2013

Filing Date:

August 27, 2012

Export Citation:

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Assignee:

HONDA MOTOR CO LTD (JP)
NAKAJIMA KIYOSHI (JP)

International Classes:

F16F9/50; B60G17/08; F16F9/32

Foreign References:

JP2008275126A	2008-11-13
JPS5835031U	1983-03-07
JP4599422B2	2010-12-15
JP2006342955A	2006-12-21

Other References: