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Title:
PLANETARY SPEED REDUCER WITH SMALL TOOTH DIFFERENCE, IN-VEHICLE DISPLAY, AND VEHICLE
Document Type and Number:
WIPO Patent Application WO/2018/099392
Kind Code:
A1
Abstract:
A planetary speed reducer with a small tooth difference, an in-vehicle display, and a vehicle are provided. The speed reducer comprises a speed reducer housing, an input shaft (220), an inner ring gear (230), a cycloidal gear (240), an output flange (270), and a plurality of pin shafts (260). The inner ring gear (230) is fixed to the speed reducer housing. The input shaft (220) is provided with an eccentric cam (221). The cycloidal gear (240) is mounted on the eccentric cam (221) by means of a rotating arm bearing (285) and meshes with the inner ring gear (230). The cycloidal gear (240) is circumferentially provided with a plurality of pin holes (241). The speed reducer further comprises a support frame (250). The support frame (250) has a central shaft hole (251). The input shaft (220) runs through the central shaft hole (251). Each pin shaft (260) runs through a corresponding pin hole (241), and the two ends of each pin shaft (260) are connected to the output flange (270) and the support frame (250) respectively. Both ends of the pin shafts of the present invention are supported, such that the flexural strength and the stiffness of the pin shafts are improved, the pin shafts are always evenly spaced, and loads on the pin shafts are balanced, improving the overall bearing capacity of the speed reducer.

Inventors:
ZHANG, Xiaoru (NO. 3009, BYD Road Pingsha, Shenzhen Guangdong 8, 518118, CN)
XU, Xiaofang (NO. 3009, BYD Road Pingsha, Shenzhen Guangdong 8, 518118, CN)
BAI, Sheng (NO. 3009, BYD Road Pingsha, Shenzhen Guangdong 8, 518118, CN)
Application Number:
CN2017/113546
Publication Date:
June 07, 2018
Filing Date:
November 29, 2017
Export Citation:
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Assignee:
BYD COMPANY LIMITED (NO. 3009, BYD Road Pingsha, Shenzhen Guangdong 8, 518118, CN)
International Classes:
F16H1/28; B60R11/02
Foreign References:
CN2210174Y1995-10-18
CN205059452U2016-03-02
CN103291846A2013-09-11
CN1048441A1991-01-09
CN102889341A2013-01-23
US20150219186A12015-08-06
Attorney, Agent or Firm:
TSINGYIHUA INTELLECTUAL PROPERTY LLC (Room 301 Trade Building, Zhaolanyuan Tsinghua University, Qinghuayuan, Haidian District, Beijing 4, 100084, CN)
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