Title:
RAILWAY CAR GEARING OF PARALLEL CARDAN DRIVE FORMAT
Document Type and Number:
WIPO Patent Application WO/2015/015806
Kind Code:
A1
Abstract:
Provided is a low-cost railway car gearing of a parallel Cardan drive format with which the vibration and noise that occur when a large gear and a small gear are enmeshed can be reduced with simply a two-dimensional tooth surface modification. A railway car gearing of a parallel Cardan drive format is provided with a helical small gear (1) and a helical large gear (2) forming a pair, each of which has gear specifications such as 4-8 modules, the pressure angle being 20-30°, and the angle of twist being 15-30°, and crowning is carried out on a tooth surface of a tooth trace direction of the helical small gear. The tooth surface (11) has a sine curve shape spanning the full width in the tooth width direction of the helical small gear, where a vertex (11a) is located in a middle region of the tooth width direction of the helical small gear, and the sine curve shape is represented by a simple sinusoidal function.
Inventors:
GOTO KENICHI (JP)
OTSUKA YOSHIHIKO (JP)
HAYASHI SATOSHI (JP)
OTSUKA YOSHIHIKO (JP)
HAYASHI SATOSHI (JP)
Application Number:
PCT/JP2014/004013
Publication Date:
February 05, 2015
Filing Date:
July 30, 2014
Export Citation:
Assignee:
TOYO ELECTRIC MFG CO LTD (JP)
International Classes:
B61C9/38; F16H55/08; F16H1/08; F16H57/021
Foreign References:
| JP4952362B2 | 2012-06-13 | |||
| JPH106136A | 1998-01-13 | |||
| JPH05116026A | 1993-05-14 | |||
| JPH08285048A | 1996-11-01 | |||
| JPH08197332A | 1996-08-06 |
Attorney, Agent or Firm:
SEIGA PATENT AND TRADEMARK CORPORATION (JP)
SEIGA Patent and Trademark Corporation (JP)
SEIGA Patent and Trademark Corporation (JP)
Download PDF:
Previous Patent: DISPLAY APPARATUS, PANEL UNIT, AND BACKLIGHT UNIT
Next Patent: HEADS-UP DISPLAY DEVICE
Next Patent: HEADS-UP DISPLAY DEVICE