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Title:
WHEEL DRIVING UNIT AND METHOD OF MANUFACTURING THE UNIT
Document Type and Number:
WIPO Patent Application WO/2001/092739
Kind Code:
A1
Abstract:
A wheel driving unit allowing an assembly work to be performed easily by a small-sized light-weight structure and preventing an offensive tooth hitting noise from occurring and a method of manufacturing the unit; the method, comprising the steps of gradually varying, in axial direction, the circular width of each of the spline teeth forming a male spline part (47a) provided on the outer peripheral surface of a spline shaft (17) and a female spline part (48a) provided in the inner peripheral surface of a spline hole (14) and engaging these spline teeth forming the spline parts (47a) and (48a) to each other in wedge shape in such a state that the directions where the width of each of the teeth forming the male and female spline parts (47a) and (48a) is increased axially are differentiated from each other, whereby the spline shaft (17) is prevented from coming out of the spline hole (14) by fitting a retaining ring (33b) between the outer end part outer peripheral surface of the spline shaft (17) and the outer end side inner peripheral surface of the spline hole (14).

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Inventors:
Ouchi, Hideo (NSK Ltd. 5-50, Kugenumashinmei 1-chome Fujisawa-shi Kanagawa, 251-8501, JP)
Ohkuma, Takeo (NSK Ltd. 5-50, Kugenumashinmei 1-chome Fujisawa-shi Kanagawa, 251-8501, JP)
Okubo, Kiyoshi (NSK Ltd. 78, Toba-cho Maebashi-shi Gunma, 371-0845, JP)
Application Number:
PCT/JP2001/004375
Publication Date:
December 06, 2001
Filing Date:
May 24, 2001
Export Citation:
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Assignee:
NSK LTD. (6-3 Ohsaki 1-chome Shinagawa-ku Tokyo, 141-8560, JP)
Ouchi, Hideo (NSK Ltd. 5-50, Kugenumashinmei 1-chome Fujisawa-shi Kanagawa, 251-8501, JP)
Ohkuma, Takeo (NSK Ltd. 5-50, Kugenumashinmei 1-chome Fujisawa-shi Kanagawa, 251-8501, JP)
Okubo, Kiyoshi (NSK Ltd. 78, Toba-cho Maebashi-shi Gunma, 371-0845, JP)
International Classes:
B60B35/14; B21J5/12; B21K1/06; B21K25/00; B60B27/00; F16D1/06; F16D1/116; F16D3/205; (IPC1-7): F16D1/02; B21J5/12; B21K1/14; B60B35/14
Foreign References:
JPH11153611A
JPH06234302A
JPH10264605A
JP2000135903A
JPH0783242A
JPH0446233U
JPH112253A
JPH04356324A
JPH06297071A
JPH0637614U
JPS55102723A
JPH0330623U
Attorney, Agent or Firm:
Oguri, Shohei (Eikoh Patent Office ARK Mori Building, 28th Floor 12-32, Akasaka 1-chome Minato-ku Tokyo, 107-6028, JP)
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