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Title:
VARIABLE VALVE TIMING DEVICE HAVING VECTOR CYCLOIDAL TRANSMISSION MECHANISM
Document Type and Number:
WIPO Patent Application WO/2020/252854
Kind Code:
A1
Abstract:
A variable valve timing device having a vector cycloidal transmission mechanism, comprising a camshaft (1), a sprocket (2) that rotates coaxially with the camshaft (1), and a motor (3) that changes the rotation phase difference of the camshaft with respect to the sprocket. The output shaft of the motor and the camshaft move in union by means of a transmission mechanism (4). The transmission mechanism comprises an eccentric structure provided on the output shaft of the motor, a cycloidal disk (42) eccentrically driven by the eccentric structure, and an output portion (43) moving in union with the cycloidal disk. A first ball fixing hole (212) and an enlarged hole (423) are provided between an A-surface (421) of the cycloidal disk and a mounting cavity (21), and a cycloidal groove (424) and a second ball fixing hole (432) are provided between a B-surface (422) of the cycloidal disk and the output portion. A first ball (44) and a second ball (45) are provided between the first ball fixing hole (212) and the enlarged hole (423) and between the second ball fixing hole (432) and the cycloidal groove (424), respectively. The variable valve timing device has a few components, a small size, and a rational layout.

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Inventors:
CHEN FEILONG (CN)
MA WUKUN (CN)
OU RISHEN (CN)
LI LINFENG (CN)
Application Number:
PCT/CN2019/098610
Publication Date:
December 24, 2020
Filing Date:
July 31, 2019
Export Citation:
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Assignee:
HSOAR GROUP CO LTD (CN)
International Classes:
F01L1/34; F01L1/352; F16H1/32
Domestic Patent References:
WO2017153275A12017-09-14
Foreign References:
CN102482955A2012-05-30
CN109139811A2019-01-04
CN109113826A2019-01-01
CN208951235U2019-06-07
JP2016205217A2016-12-08
EP3219944A12017-09-20
US20180266518A12018-09-20
Attorney, Agent or Firm:
WENZHOU OUYUE PATENT AGENTS CO., LTD (CN)
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