Title:
HOLLOW COIL SPRING, AND SUSPENSION DEVICE FOR VEHICLE
Document Type and Number:
WIPO Patent Application WO/2017/170789
Kind Code:
A1
Abstract:
Provided is a hollow coil spring (10) consisting of a hollow wire (20), wherein an end sealing section (30) is formed at an end (20a) of the wire (20). The end sealing section (30) has a rotationally symmetric shape which is symmetric about an axis (X1) extending through the center of the wire (20). The hollow coil spring (10) has an end wall section (41) and an end surface arc-like curved surface (42). The end wall section (41) includes an end surface (40) perpendicular to the axis (X1). A front end center closure section (43) is formed on the axis (X1) extending through the center of the end wall section (41). A spring seat (11) has a base member (50) and a seat member (51). An end winding section (10a) of the hollow coil spring (10) is in contact with the seat member (51). The end surface (40) of the end winding section (10a) faces the stopper wall (52) of the spring seat (11).
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Inventors:
UMEZAWA MASAHIRO (JP)
TAKEDA DAISUKE (JP)
TAKEDA DAISUKE (JP)
Application Number:
PCT/JP2017/013096
Publication Date:
October 05, 2017
Filing Date:
March 29, 2017
Export Citation:
Assignee:
NHK SPRING CO LTD (JP)
YOKOHAMA KIKO CO LTD (JP)
YOKOHAMA KIKO CO LTD (JP)
International Classes:
F16F1/06; B60G11/16; F16F1/12; F16F9/32
Domestic Patent References:
| WO2012073786A1 | 2012-06-07 |
Foreign References:
| JP2004290987A | 2004-10-21 | |||
| JP2005256964A | 2005-09-22 | |||
| JPH0712160A | 1995-01-17 | |||
| JP2007127227A | 2007-05-24 | |||
| JP2013185670A | 2013-09-19 | |||
| JPS5720507U | 1982-02-02 | |||
| JP2015047978A | 2015-03-16 |
Other References:
See also references of EP 3438494A4
Attorney, Agent or Firm:
S & S INTERNATIONAL PPC (JP)
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