Power distributor with double-layer gear without inner gear ring as planetary gear

Abstract

The invention discloses a power distributor with a double-layer gear without an inner gear ring as a planetary gear, and relates to a new scheme of a power distributor in an automobile hybrid power system. The power input and output piece comprises a double-layer gear set planet carrier with an external meshing gear, a large sun gear half shaft and a small sun gear half shaft. An engine inputs power from a half shaft at one end, after a sun gear is meshed with a double-layer gear planet carrier, the power is distributed to an MG1 motor connected with the other half shaft, and the power is also transmitted to a differential mechanism through the planet carrier. And the power input and output positions can be changed according to the space arrangement of a specific product. For example, the engine is feasible to input from another half shaft or input from a planet carrier and the like.

Description

Technical Field

[0001] The present invention is used in automobiles. The double-layer gear without an inner ring serves as a power distributor for planetary gears, which can couple and split the power of the engine and the motor. In particular, the vehicle's continuously variable transmission, i.e., E-CVT, is achieved through stepless adjustment of the motor. Background Art

[0002] Planetary gear mechanisms are widely used as power distributors, including Toyota's THS hybrid system and GM's dual planetary gear hybrid system. Summary of the Invention

[0003] The present invention is: a double-layer gear without an inner gear ring as a power distributor of planetary gears Used in E-CVT, it combines and distributes engine power and motor power to achieve electronically controlled continuously variable speed change and energy recovery functions.

[0004] In the “Drawings” Figure 1 It is a cross-sectional view. Figure 2 It is a three-dimensional perspective drawing. Figure 1 As shown in the figure, the structure of our power distributor is as follows: a double-layer gear planetary carrier, a small sun gear half shaft, and a large sun gear half shaft. Three components.

[0005] The planetary carrier (1) is integrally formed with the power distributor housing. The planetary gears are cylindrical in shape, with a large externally meshing gear fixed to them. Multiple double-layer gear sets (2) are mounted inside the planetary carrier. Here, I will use four double-layer gears as an example. The four double-layer gears are evenly distributed. The double-layer gears and the double-layer gear shaft are integrally formed or tightly fitted together. The large and small gears in the double-layer gears have a helical gear structure, rotate in opposite directions, and have a gap. Tapered roller bearings (3) are mounted at both ends. In addition to the gears (4), the cylindrical surface of the planetary carrier also has a large spline structure (5) for locking the planetary carrier.

[0006] The large sun gear (6) is connected to or integrated with the half shaft (10); and is meshed with the small gear (7) in the double-layer gear on the planetary frame. The small sun gear (8) is connected to or integrated with the half shaft (9); and is meshed with the large gear (11) in the double-layer gear on the planetary frame for installation.

[0007] Bearings (12) are installed between the centers of the two end faces of the planetary carrier and the two half-shafts. In order to cool and lubricate the gears and bearings, there are openings on both end faces of the planetary carrier. There are two large tapered roller bearings (13) between the planetary carrier and the gearbox. The planetary carrier is manufactured in two parts, left and right, and the two parts are assembled together with multiple bolts (14).

Claims

1. Three power transmission components: The planetary gear rack made of double-layer gears, the large sun gear half shaft, and the small sun gear half shaft constitute the three power input and output components.

2. The planetary gear frame is made of double-layer gears without an inner ring gear. The power is input from the sun gear half shaft on one side (6) and output to the sun gear half shaft on the other side through the double-layer gear planetary frame (1).

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