COILED SPRING FOR SUSPENSION DEVICE

Title:

COILED SPRING FOR SUSPENSION DEVICE

Document Type and Number:

WIPO Patent Application WO/2015/022816

Kind Code:

A1

Abstract:

A coiled spring for a suspension device includes a lower seat winding section (42), an upper seat winding section (44), and a helical effective section (45) which is formed between the seat winding sections (42, 44). The lower seat winding section (42) includes: a first portion (42a) which is always in contact with a lower spring seat irrespective of a load; and a second portion (42b) which comes into contact with and separates from the lower spring seat according to a load. The wire diameter at the second portion (42b) is greater than the wire diameter at the first portion (42a) and is greater than the average wire diameter at the effective section (45). The upper seat winding section (44) includes: a third portion (44a) which is always in contact with an upper spring seat irrespective of a load; and a fourth portion (44b) which comes into contact with and separates from the upper spring seat according to a load. The wire diameter at the fourth portion (44b) is greater than the wire diameter at the third portion (44a) and is greater than the average wire diameter at the effective section (45).

Inventors:

YAMAMOTOYA KENJI (IN)
ENOMOTO HIDETO (JP)
TAKAHASHI KEN (JP)
SATO TOSHIAKI (JP)
SUGIYAMA MITSUHIRO (JP)
KOBAYASHI YOSHIO (JP)
INAGE TAICHI (JP)
KATO TOMOTAKE (JP)
NISHIKAWA AKIHIKO (JP)
UMEZAWA MASAHIRO (JP)
AYADA MICHIHIKO (JP)
KAJIGAYA SUGURU (JP)

Application Number:

PCT/JP2014/067554

Publication Date:

February 19, 2015

Filing Date:

July 01, 2014

Export Citation:

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Assignee:

NHK SPRING CO LTD (JP)

International Classes:

F16F1/06; B60G9/04; B60G11/14; F16F9/32

Foreign References:

JPS59219534A	1984-12-10
JPH0914316A	1997-01-14
JP2012057777A	2012-03-22
JP2002067647A	2002-03-08
JP2000103216A	2000-04-11
JP2005171297A	2005-06-30
JP2011000663A	2011-01-06

Other References: