CN111043250A

CN111043250A - Automatic speed changing and limited slip differential device for vehicle

Info

Publication number: CN111043250A
Application number: CN201910397158.XA
Authority: CN
Inventors: 吴方平
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-27
Filing date: 2019-04-27
Publication date: 2020-04-21

Abstract

A gear ring shell (1) in a vehicle speed changing and slip limiting differential device is provided with a rotatable worm wheel (2), the center of the gear ring shell (1) is provided with a rotatable worm (3), the worm wheel (2) is meshed with the worm (3) to form staggered shaft helical gear transmission, the worm (3) is connected with a driving shaft (4), and the driving shaft (4) is connected with a wheel (5). An input gear (7) on the power input shaft (6) is meshed with a gear ring (8) fixedly connected to the gear ring shell (1). The vehicle runs by inertia, the driving shaft (4) drives the worm (3) and the worm wheel (2) to rotate around the self axis, the engine inputs power, the gear ring shell (1) drives the worm wheel (2) and the worm (3) to revolve around the central line of the gear ring shell at a certain speed, thus, the rotation speed and the revolution speed are superposed, the rotation speed of the driving shaft (4) and the inertia speed of the vehicle (5) are increased, the rotation speed and the revolution speed are increased and then superposed, the vehicle is accelerated, and the purpose of speed change is achieved.

Description

Automatic speed changing and limited slip differential device for vehicle

The present invention relates to a device for automatically shifting a vehicle as required.

Vehicle speed change is realized by changing the transmission ratio of input and output in the market, but the speed change of the speed change mechanism needs a gear shifting mechanism, a hydraulic system and electronic equipment, and the mechanical structure is complex.

The present invention solves the above-mentioned drawbacks by providing an automatic transmission and limited slip differential device for a vehicle that performs automatic transmission without requiring the vehicle to change the transmission ratio of input and output.

The invention is realized by the following steps that the power input device comprises a gear ring shell, a worm wheel, a worm, a gear ring, a driving shaft, a power input shaft, an input gear, wheels and the like, wherein the rotatable worm wheel is arranged on the gear ring shell, the rotatable worm is arranged in the center of the gear ring shell, the worm is meshed with the worm wheel to form staggered shaft helical gear transmission, the worm is connected with the driving shaft, the driving shaft is connected with the wheels, and the input gear on the power input shaft is meshed with the gear ring fixedly connected on the.

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a front view of the present invention;

FIG. 2 is a left side view of the present invention (without wheels);

FIG. 3 is a top view of the present invention (without the wheel);

FIG. 4 is an elevational view of the present invention securing two ring gear housings of FIG. 1 together, sharing a single ring gear.

Fig. 5 is a front view of the parallel shaft meshing of the worm wheel and the worm of the present invention.

In fig. 1, 2, 3, 4, and 5, 1 is a ring gear housing 2, a worm wheel 3, a worm 4, a drive shaft 5, a wheel 6, a power input shaft 7, an input gear 8, a ring gear 9, a worm bearing 10, and a worm bearing.

The gear ring shell (1) is provided with a rotatable worm wheel (2), the center of the gear ring shell is provided with a rotatable worm (3), the worm (3) is meshed with the worm wheel (2) to form staggered shaft helical gear transmission, the worm (3) is connected with a driving shaft (4), the driving shaft (4) is connected with wheels (5), and an input gear (7) on a power input shaft (6) is meshed with a gear ring (8) fixedly connected on the gear ring shell (1).

When the engine does not input power, the vehicle does not move or runs by inertia, when the vehicle runs by inertia, the wheels (5) drive the driving shaft (4) to rotate, the driving shaft (4) drives the worm (3) to rotate around the self shaft, the worm (3) drives the worm wheel (2) to rotate around the self shaft, and at the moment, the power input shaft (6) does not move the gear ring shell (1).

When the engine inputs power, the power input shaft (6) and the gear ring shell (1) are rotated, and the worm wheel have self-locking property, only the worm (3) can drive the worm wheel (2) to rotate, the worm wheel (2) cannot drive the worm (3) to rotate, namely, the rotation of the gear ring shell (1) drives the worm wheel (2) and the worm (3) to revolve around the central line of the gear ring shell (1).

The vehicle runs by inertia, the worm (3) and the worm wheel (2) rotate around the self axis, the power input by the engine enables the worm (3) and the worm wheel (2) to revolve around the central line of the gear ring shell (1) together, so that the superposition of the rotation speed and the revolution speed increases the rotation speed of the driving shaft (4) and the inertia speed of the vehicle (5), namely the rotation speed of the worm (3) and the worm wheel (2) is increased, and the increased rotation speed and the revolution speed are superposed again, so that the rotation speeds of the driving shaft (4) and the wheels (5) are increased, namely the power input shaft (6) and the gear ring shell (1) rotate (revolve) at a certain rotation speed, the vehicle speed is increased more and more until the power input by the engine is equal to the resistance of the vehicle, and when the speed is reduced, the engine does not input power or brake, thereby.

The invention can be used as a limited slip differential instead of an automatic transmission, and the worm wheel (2), the worm (3) and the drive shaft (4) of the two gear ring shells (1) are fixedly connected together, and share the gear ring (8), as shown in figure 4. When the power input shaft (6) and the gear ring shell (1) rotate, the two sets of worms (3) are not connected with the worm wheel (2), the autorotation rotating speeds of the worm wheels (2) and the worms (3) on the two sides are not necessarily the same, and when the automobile turns, the resistance of the inner side wheel (5) is large, and the autorotation rotating speed of the worm wheel (2) and the worm (3) on the side can be reduced to form differential speed. Because the two gear ring shells (1) are fixedly connected together to form a whole, the revolutions of the worm wheels (2) and the worms (3) on the two sides are the same, the wheels (5) on one side are suspended or slipped, and the revolution rotating speed of the wheels (5) on the two sides cannot be changed, so that the torque on the side with large resistance can be increased, and the function of limiting slipping is realized.

In fig. 5, the worm (3) and worm wheel (2) can be meshed with each other in parallel to the axis in order to make the present invention more compact.

Claims

1. The utility model provides a vehicle automatic speed change and limited slip differential device, includes ring gear shell (1), worm wheel (2), worm (3), drive shaft (4), wheel (5), power input shaft (6) input gear (7), ring gear (8), worm bearing (9), worm wheel bearing (10), characterized by: the gear ring shell (1) is provided with a rotatable worm wheel (2), the center of the gear ring shell (1) is provided with a rotatable worm (3), the worm wheel (2) is meshed with the worm (3), and the worm (3) is connected with a driving shaft (4).

2. The apparatus of claim 1, further comprising: the two gear ring shells (1) are fixedly connected together and share a gear ring (8).