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Patent Searching and Data


Title:
SPLINE STRUCTURE, SPEED-REDUCING OR SPEED-INCREASING DEVICE, AND CONSTANT-VELOCITY JOINT
Document Type and Number:
WIPO Patent Application WO/2019/026596
Kind Code:
A1
Abstract:
Provided is a spline structure with which contact surface area between an outer-side member and balls can be ensured, and contact surface area between an inner-side member and the balls can be ensured. This spline structure is provided with an outer-side member (1) having a first track groove (4) on the inner surface, an inner-side member (2) having a second track groove (5) on the outer surface, and balls (3) disposed between the first track groove (4) and the second track groove (5) so as to allow the inner-side member (2) to be inclined relative to the outer-side member (1). A bottom part (4a) extending along the length direction of the first track groove (4) has a linear shape. A bottom part (5a) extending along the length direction of the second track groove (5) has a concave curved shape.

Inventors:
SAITO HIDEO (JP)
MIZUTANI YUICHI (JP)
KUSHIDA KOTARO (JP)
Application Number:
PCT/JP2018/026653
Publication Date:
February 07, 2019
Filing Date:
July 17, 2018
Export Citation:
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Assignee:
THK CO LTD (JP)
International Classes:
F16D3/223; F16H1/32
Domestic Patent References:
WO2005068863A12005-07-28
WO2016140234A12016-09-09
Foreign References:
JPS4819803B11973-06-16
JPS4838653B11973-11-19
JPS541853B11979-01-30
JP2009191911A2009-08-27
JP2009174639A2009-08-06
Attorney, Agent or Firm:
SHIOJIMA, Toshiyuki (JP)
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