CN218777414U

CN218777414U - Two-motor three-gear drive axle

Info

Publication number: CN218777414U
Application number: CN202223385943.XU
Authority: CN
Inventors: 徐可; 刘树成; 步进增; 陈飞; 吴会波
Original assignee: Jiangsu Huayong Composite Materials Co Ltd
Current assignee: Jiangsu Huayong Composite Materials Co Ltd
Priority date: 2022-12-12
Filing date: 2022-12-12
Publication date: 2023-03-31
Anticipated expiration: 2032-12-12

Abstract

A two-motor three-gear transaxle is provided, including a first torque input unit; a second torque input unit; a shift unit comprising: an intermediate shaft; the first torque input gear is fixedly connected to the first end of the intermediate shaft; a first output engagement tooth fixedly connected to the second end of the intermediate shaft; the double-star planet row is sleeved outside the intermediate shaft in a relatively rotating manner and comprises a sun wheel, an inner planet wheel, an outer planet wheel, a planet carrier and a gear ring; a second torque input gear fixedly connected to an outer periphery of the carrier, the sun gear fixedly connected to the case, a second output engaging gear fixedly connected to the carrier, and a third output engaging gear fixedly connected to the ring gear; an engagement sleeve slidably engaged with the first, second or third output engagement teeth; and a torque output unit including a differential connected with the engagement sleeve via a differential case. The drive axle can effectively improve the bearing capacity and is compact in arrangement.

Description

Two-motor three-gear drive axle

Technical Field

The utility model relates to a new energy automobile spare part field especially relates to a two motors three keep off transaxles.

Background

New energy automobiles are more and more valued by the nation. However, the existing electric drive bridge has the problems of low transmission efficiency, heavy weight, complex transmission structure, high cost and the like.

Therefore, there is a need to develop a two-motor three-gear drive axle to solve one or more of the above-mentioned technical problems.

SUMMERY OF THE UTILITY MODEL

For solving above-mentioned at least one technical problem, according to the utility model discloses an aspect provides a two motors three keeps off transaxle, its characterized in that includes:

a first torque input unit including a first motor, a first transmission gear, and a second transmission gear;

the second torque input unit comprises a second motor, a third transmission gear and a fourth transmission gear;

a shift unit comprising: an intermediate shaft; a first torque input gear fixedly connected to a first end of the intermediate shaft; a first output engagement tooth fixedly connected to the second end of the intermediate shaft; the double-star planet row is sleeved outside the intermediate shaft in a relatively rotating manner and comprises a sun wheel, an inner planet wheel, an outer planet wheel, a planet carrier and a gear ring; a second torque input gear fixedly connected to the outer periphery of the carrier, the sun gear fixedly connected to the case, a second output engagement gear fixedly connected to the carrier, and a third output engagement gear fixedly connected to the ring gear; an engagement sleeve slidably engaged with the first, second or third output engagement teeth; and

a torque output unit including a differential connected with the engaging sleeve via a differential case;

the first transmission gear and the third transmission gear are meshed with the first torque input gear, and the second transmission gear and the fourth transmission gear are meshed with the second torque input gear.

In accordance with yet another aspect of the present invention, the differential is provided with a first output half shaft and a second output half shaft.

According to the utility model discloses in another aspect, this joint tooth cover is connected with the differential mechanism casing after connecting gradually shift fork and spline housing.

According to the utility model discloses in another aspect, this moment of torsion output unit still includes the speed reduction planet row, and the spline housing is connected to the sun gear that this speed reduction planet row, and differential mechanism casing is connected to the planet carrier that this speed reduction planet row.

According to still another aspect of the present invention, the first torque input unit and the second torque input unit have the same structure.

According to another aspect of the present invention, the first torque input unit further includes a connecting shaft fixedly connected between the first transmission gear and the second transmission gear and a fifth transmission gear engaged with the first transmission gear or the second transmission gear.

In accordance with yet another aspect of the present invention, the intermediate shaft is a hollow shaft and the first output half shaft passes through the intermediate shaft.

According to another aspect of the present invention, the first torque input unit further includes a connecting shaft fixedly connected between the first transmission gear and the second transmission gear, a fifth transmission gear, and a sixth transmission gear provided at the connecting shaft, the fifth transmission gear being engaged with the sixth transmission gear.

The utility model discloses can obtain following one or more technological effect:

1. the double motors are matched with the three-gear speed change mechanism, so that the utilization rate of the motor power is fully improved;

2. the double-star planet row is matched with the parallel shaft gear pair to realize three-gear speed change, the gear step ratio is reduced, the gear shifting impact is reduced, the gear shifting is smoother, and the driving control comfort is improved;

3. the gear shifting of three gears can be realized by only using one gear shifting motor and the actuating mechanism thereof, so that the production cost of the gear shifting mechanism is reduced, and the reliability of the system is improved.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a schematic view of a two-motor three-gear drive axle according to a first preferred embodiment of the present invention.

Fig. 2-4 are schematic views of a two-motor three-gear transaxle according to second to fourth preferred embodiments of the present invention.

Detailed Description

The best mode of the present invention will be described in detail with reference to the accompanying drawings, wherein the detailed description is to be regarded as illustrative in nature and not as restrictive, and various changes and modifications may be made without departing from the spirit and scope of the present invention.

Example 1

According to a preferred embodiment of the present invention, referring to fig. 1 to 4, there is provided a two-motor three-gear drive axle, comprising:

a first torque input unit including a first motor M1, a first transmission gear 9, and a second transmission gear 13;

a second torque input unit including a second motor M2, a third transmission gear 39 and a fourth transmission gear 40;

a shift unit comprising: an intermediate shaft 11; a first torque input gear 10 fixedly connected to a first end of the intermediate shaft; a first output engagement tooth 12 fixedly connected to the second end of the intermediate shaft; the double-star planet row is sleeved outside the intermediate shaft 11 in a relatively rotatable manner and comprises a sun wheel 19, an inner planet wheel 17, an outer planet wheel 18, a planet carrier 15 and a gear ring 20; a second torque input gear 14 fixedly connected to the outer periphery of the carrier 15, the sun gear fixedly connected to the case 4, second output engagement teeth 16 fixedly connected to the carrier 15, third output engagement teeth 21 fixedly connected to the ring gear 20; an engaging sleeve 22 slidably engaged with the first output engaging tooth 12, the second output engaging tooth 16, or the third output engaging tooth 21; and

a torque output unit including a differential 32, the differential 32 being connected with the engaging sleeve 22 via a differential case 31;

wherein the first and

third transfer gears

9 and 39 are engaged with the first torque input gear 10, and the second and

fourth transfer gears

13 and 40 are engaged with the second torque input gear 14.

According to a further preferred embodiment of the present invention, the differential is provided with a first output half shaft 34 and a second output half shaft 33.

According to another preferred embodiment of the present invention, the engaging sleeve 22 is connected to the differential case 31 after connecting the shift fork 23 and the spline housing 26 in this order.

According to a further preferred embodiment of the present invention, the torque output unit further comprises a reduction planetary row, the sun gear 27 of which is connected to the spline housing 26, and the planet carrier 30 of which is connected to the differential case 31.

According to a further preferred embodiment of the present invention, the first torque input unit and the second torque input unit have the same structure.

According to another preferred embodiment of the present invention, referring to fig. 3 to 4, the first torque input unit further includes a connecting shaft 8 and a fifth transmission gear 6 fixedly connected between the first transmission gear 9 and the second transmission gear 13, and the fifth transmission gear 6 is engaged with the first transmission gear 9 or the second transmission gear 13.

According to a further preferred embodiment of the invention, the intermediate shaft 11 is a hollow shaft through which the first output half shaft passes.

According to another preferred embodiment of the present invention, referring to fig. 1, the first torque input unit further includes a connecting shaft 8 fixedly connected between the first transmission gear 9 and the second transmission gear 13, a fifth transmission gear 6, and a sixth transmission gear 7 provided at the connecting shaft 8, and the fifth transmission gear 6 is engaged with the sixth transmission gear 7.

According to another preferred embodiment of the present invention, the motor M1 is connected to the gear 6 through the motor shaft 5, the gear 6 is engaged with the gear 7, the gear 7 is rigidly connected to the transmission shaft 8, the gear 9 and the gear 13, the gear 9 is engaged with the gear 10, the gear 10 is rigidly connected to the shaft 11 and the output engagement teeth 12, the gear 13 is engaged with the gear 14, the gear 14 is rigidly connected to the planet carrier 15 and the output engagement teeth 16, the inner planetary gear 17 and the outer planetary gear 18 both revolve around the central axis of the planet carrier 15 and rotate around the axis of the planet carrier, the inner planetary gear 17 is engaged with the sun gear 19, the sun gear 19 is fixed to the box 4, the inner planetary gear 17 is engaged with the outer planetary gear 18, the outer planetary gear 18 is engaged with the inner gear ring 20, the inner gear ring 20 is rigidly connected to the output engagement teeth 21, the engagement gear ring 22 is connected to the shift fork 23, the shift fork 23 is fixed to the shift transmission rod 24, and the shift fork 23 is radially fixed to the spline 26 and axially kept relatively sliding left and right, and the shift driving transmission rod 24; the output joint teeth 21, the output joint teeth 16 and the output joint teeth 12 are distributed near the joint gear sleeve 22 and respectively used as a first position, a second position and a third position of a shifting gear, the spline sleeve 26 is coaxially and rigidly connected with the sun gear 27, the sun gear 27 is meshed with the planet gears 28, the planet gears 28 are meshed with the inner gear ring 29, the inner gear ring 29 is fixed with the box body 4, the planet gears 28 revolve around the central axis of the planet carrier 30 and rotate around the self axis of the self planet gear shaft under the constraint of the planet carrier 30, the planet carrier 30 is rigidly connected with a differential shell 31, the differential shell 31 drives a differential 32, and the differential 32 transmits power to a first half shaft 33 and a second half shaft 34 and then to the wheel edge; the motor M2 is connected with a gear 36 through a motor shaft 35, the gear 36 is meshed with the gear 37, the gear 37 is rigidly connected with a transmission shaft 38, a gear 39 and a gear 40, the gear 39 is meshed with the gear 10, the gear 40 is meshed with the gear 14, the subsequent power transmission is the same as the structural form of the motor M1, and the motor M1 and the motor M2 are symmetrically arranged or arranged at a certain included angle.

It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a two motors three keep off transaxles which characterized in that includes:

a shift unit comprising: an intermediate shaft; a first torque input gear fixedly connected to a first end of the intermediate shaft; a first output engagement tooth fixedly connected to the second end of the intermediate shaft; the double-star planet row is sleeved outside the intermediate shaft in a relatively rotating manner and comprises a sun wheel, an inner planet wheel, an outer planet wheel, a planet carrier and a gear ring; a second torque input gear fixedly connected to an outer periphery of the carrier, the sun gear fixedly connected to the case, a second output engaging gear fixedly connected to the carrier, and a third output engaging gear fixedly connected to the ring gear; an engagement sleeve slidably engaged with the first, second or third output engagement teeth; and

a torque output unit including a differential connected with the engagement sleeve via a differential case;

2. The two-motor, three-speed drive axle of claim 1, wherein the differential is provided with a first output half shaft and a second output half shaft.

3. The two-motor three-speed transaxle of claim 1 or 2 wherein the coupling sleeve is coupled to the differential housing after being sequentially coupled to the yoke and the spline housing.

4. The two-motor, three-speed drive axle according to claim 3, wherein the torque output unit further comprises a reduction planetary row, a sun gear of the reduction planetary row being coupled to the spline housing, and a carrier of the reduction planetary row being coupled to the differential case.

5. The two-motor, three-speed transaxle of claim 4 wherein the first torque input unit and the second torque input unit have the same structure.

6. The two-motor three-gear drive axle according to claim 5, wherein the first torque input unit further comprises a connecting shaft fixedly connected between the first transmission gear and the second transmission gear and a fifth transmission gear meshed with the first transmission gear or the second transmission gear.

7. The two-motor, three-speed drive axle of claim 3 wherein the intermediate shaft is a hollow shaft through which the first output half shaft passes.

8. The two-motor three-gear drive axle according to claim 5, wherein the first torque input unit further comprises a connecting shaft fixedly connected between the first transmission gear and the second transmission gear, a fifth transmission gear and a sixth transmission gear arranged on the connecting shaft, and the fifth transmission gear is meshed with the sixth transmission gear.