Transaxle and two-speed drive module thereof
First Claim
1. A transaxle two-speed drive module comprising:
- an input shaft;
an output shaft; and
a gear assembly for transmitting power between the input shaft and the output shaft, the gear assembly comprises;
a two-speed gear set having two sets of shift gear pairs with different speed ratios, an intermediate shaft, and a synchronizer,the shift gear pairs including an intermeshing idler gear and a solid idler gear, the synchronizer being adapted for engaging with or disengaging from the intermeshing idler gear,the shift gear pairs being adapted to be drive-connected or disconnected from the input shaft in order to change an output rotational speed of the input shaft to different speed ratios;
a planetary gear set having an output end that is drive-connected to the output shaft;
a connecting gear set that drivingly connects the two-speed gear set and the planetary gear set; and
the intermeshing idler gear and the synchronizer are on the input shaft, and the solid idler gear is on the intermediate shaft, and the connecting gear set is located between the two sets of the shift gear pairs, in an axial direction of the intermediate shaft.
1 Assignment
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Accused Products
Abstract
A transaxle and a two-speed drive module thereof. The two-speed drive module comprises an input shaft, an output shaft, and gear sets used for transmitting power between the input shaft and the output shaft. The gear sets comprise: a two-speed gear set having two groups of shift gear pairs that have different speed ratios, the shift gear pairs being capable of transmittingly connecting to or disconnecting from the input shaft so as to output the rotational speed of the input shaft at different speed ratios; a planetary gear set having an output end thereof being transmittingly connected to the output shaft; and a connecting gear set by which the two-speed gear set is transmittingly connected to the planetary gear set. The two-speed drive module can implement a reduction in the radial dimension, and can reduce the ground clearance of a transaxle.
8 Citations
13 Claims
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1. A transaxle two-speed drive module comprising:
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an input shaft; an output shaft; and a gear assembly for transmitting power between the input shaft and the output shaft, the gear assembly comprises; a two-speed gear set having two sets of shift gear pairs with different speed ratios, an intermediate shaft, and a synchronizer, the shift gear pairs including an intermeshing idler gear and a solid idler gear, the synchronizer being adapted for engaging with or disengaging from the intermeshing idler gear, the shift gear pairs being adapted to be drive-connected or disconnected from the input shaft in order to change an output rotational speed of the input shaft to different speed ratios; a planetary gear set having an output end that is drive-connected to the output shaft; a connecting gear set that drivingly connects the two-speed gear set and the planetary gear set; and the intermeshing idler gear and the synchronizer are on the input shaft, and the solid idler gear is on the intermediate shaft, and the connecting gear set is located between the two sets of the shift gear pairs, in an axial direction of the intermediate shaft. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A transaxle two-speed drive module comprising:
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an input shaft; an output shaft; and a gear assembly for transmitting power between the input shaft and the output shaft, the gear assembly comprises; a two-speed gear set having two sets of shift gear pairs with different speed ratios, an intermediate shaft, and a synchronizer, the shift gear pairs including an intermeshing idler gear and a solid idler gear, the synchronizer being adapted for engaging with or disengaging from the intermeshing idler gear, the shift gear pairs being adapted to be drive-connected or disconnected from the input shaft in order to change an output rotational speed of the input shaft to different speed ratios; a planetary gear set having an output end that is drive-connected to the output shaft; a connecting gear set that drivingly connects the two-speed gear set and the planetary gear set; wherein said intermeshing idler gear and said synchronizer are on the intermediate shaft, and said solid idler gear is on said input shaft; and said connecting gear set is on one side of the two shift gear pairs, in an axial direction of the intermediate shaft. - View Dependent Claims (9, 10, 11, 12, 13)
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Specification