阅读说明：本技术 三轮电动车的传动系统 (Transmission system of three-wheeled electric vehicle ) 是由 黄惠辉 董庆雄 蔡淑美 于 2020-11-30 设计创作，主要内容包括：本发明是关于一种三轮电动车的传动系统,其是设在车架上并连接后部的第一后轮与第二后轮,且第一后轮与第二后轮之间的中心处定义一中心基准面,且该中心基准面与第一后轮形成一第一配置区间,该中心基准面与该第二后轮之间形成一第二配置区间,该传动系统采用马达与差速器配置在该第二配置区间,连接马达与差速器的齿轮式传动装置配置于第一配置区间,且差速器邻近该中心基准面与该马达,让差速器更为居中而降低扭矩差异并提高输出传动效率,且可减少整体宽度并达到小型化的目的。(The invention relates to a transmission system of a three-wheeled electric vehicle, which is arranged on a vehicle frame and connected with a first rear wheel and a second rear wheel at the rear part, wherein a center reference plane is defined at the center between the first rear wheel and the second rear wheel, the center reference plane and the first rear wheel form a first configuration interval, a second configuration interval is formed between the center reference plane and the second rear wheel, the transmission system adopts a motor and a differential mechanism to be configured in the second configuration interval, a gear type transmission device connected with the motor and the differential mechanism is configured in the first configuration interval, and the differential mechanism is close to the center reference plane and the motor, so that the differential mechanism is more centered, the torque difference is reduced, the output transmission efficiency is improved, the whole width is reduced, and the purpose of miniaturization is achieved.)

1. A transmission system of a three-wheeled electric vehicle is arranged on a frame of the three-wheeled electric vehicle and connected with a first rear wheel and a second rear wheel at the rear part of the three-wheeled electric vehicle, a center datum plane is defined at the center of the distance between the first rear wheel and the second rear wheel, a first configuration interval is formed between the center datum plane and the first rear wheel, and a second configuration interval is formed between the center datum plane and the second rear wheel, and the transmission system of the three-wheeled electric vehicle is characterized by comprising:

a motor located in the second configuration region and having a motor axis and a driving shaft, wherein the motor axis is disposed on the motor and protruded toward the first configuration region, and the driving shaft is coaxially disposed on the motor axis and located in the first configuration region;

a gear type transmission device which is positioned in the first configuration section and is controlled to be connected with the driving shaft of the motor;

a first rear wheel shaft located in the first allocation region, the first rear wheel shaft being assembled on the first rear wheel and controlled to connect with the gear type transmission device;

a differential disposed in the second configuration zone and coaxially connected to the first rear axle, the differential being adjacent to the central reference plane; and

a second rear wheel shaft located in the second configuration section, the second rear wheel shaft being assembled to the second rear wheel and coaxially connected to the differential;

the differential mechanism is provided with a central line, the central line is perpendicular to the axis of the first rear wheel shaft and is adjacent to the central datum plane, and the motor and the gear type transmission device are positioned on two sides of the central line of the differential mechanism.

2. The transmission system of three-wheeled electric vehicle as claimed in claim 1, wherein the driving shaft is provided with a driving gear, the driving gear is located in the first allocation zone and adjacent to the motor axis, the gear transmission device comprises an intermediate shaft, a first transmission gear, a second transmission gear and an output gear, the intermediate shaft is located in the first allocation zone and located between the driving shaft and the first rear wheel shaft, the intermediate shaft is parallel to the driving shaft, the first transmission gear is located on the intermediate shaft and engages with the driving gear, the second transmission gear is located on the intermediate shaft coaxially with the first transmission gear, and the output gear is located on the first rear wheel shaft and engages with the second transmission gear.

3. A transmission system for an electric three-wheeled vehicle according to claim 2, wherein the distance from the second transmission gear to the central reference plane is greater than the distance from the first transmission gear to the central reference plane.

4. A three-wheeled electric vehicle driveline as recited in claim 2, wherein the distance from the output gear to the central reference plane is greater than the distance from the centerline of the differential to the central reference plane.

5. A three-wheeled electric vehicle transmission system as claimed in claim 3, wherein the distance from the output gear to the central reference plane is greater than the distance from the centerline of the differential to the central reference plane.

6. The transmission system of a three-wheeled electric vehicle as claimed in claim 1, wherein the transmission system includes a casing, a receiving space is formed in the casing, and the driving shaft, the gear transmission and the differential are all located in the receiving space.

7. The transmission system of three-wheeled electric vehicle as claimed in any one of claims 2 to 5, wherein the transmission system comprises a casing, a receiving space is formed in the casing, and the driving shaft, the intermediate shaft, the first transmission gear, the second transmission gear, the output gear and the differential are all located in the receiving space.

8. The transmission system of a three-wheeled electric vehicle as claimed in claim 7, wherein the casing is provided with a parking mechanism, the parking mechanism extends into the accommodating space, the driving shaft is located between the parking mechanism and the intermediate shaft, a parking gear matched with the parking mechanism is arranged on the driving shaft, and the distance from the parking gear to the central reference plane is greater than the distance from the driving gear to the central reference plane.

Technical Field

The present invention relates to a transmission system, and more particularly to a transmission system for a three-wheeled electric vehicle.

Background

The transmission system of the existing three-wheeled electric vehicle is arranged on a frame of the three-wheeled electric vehicle and connected with a first rear wheel and a second rear wheel at the rear part of the three-wheeled electric vehicle, a center datum plane is defined at the center of the distance between the first rear wheel and the second rear wheel, a first configuration interval is formed between the center datum plane and the first rear wheel, and a second configuration interval is formed between the center datum plane and the second rear wheel.

The transmission system of the three-wheeled electric vehicle comprises a motor, a gear type transmission device, a first rear wheel axle, a differential mechanism and a second rear wheel axle, wherein the motor is positioned in the first configuration section and is provided with a driving shaft, the driving shaft protrudes to the second configuration section and faces to the second rear wheel, the gear type transmission device is positioned in the second configuration section and is connected with the motor and the first rear wheel axle, one end of the first rear wheel axle is connected with the first rear wheel, the other end of the first rear wheel axle is connected with the differential mechanism, one end of the second rear wheel axle is connected with the second rear wheel, the other end of the second rear wheel axle is connected with the differential mechanism, the first rear wheel axle, the second rear wheel axle and the differential mechanism are coaxially configured, the differential mechanism is positioned in the second configuration section and defines a central line on the differential mechanism, the central line is vertical to the axle center of the first rear wheel axle and is positioned at the middle section of the second configuration section, the motor and the gear type transmission device are both positioned on the same side of the central line of the differential mechanism, namely the motor and the gear type transmission device are both positioned between the differential mechanism and the first rear wheel.

However, the motor and the differential are located at two sides of the gear type transmission device, the motor is located in the first configuration region, the gear type transmission device and the differential are both located in the second configuration region, so that the torque difference is large due to the large length difference between the first rear wheel axle and the second rear wheel axle, the output transmission efficiency is not ideal, and the motor and the differential are located at two sides of the gear type transmission device, so that the transmission system of the three-wheeled electric vehicle is wide, and thus, the improvement space is still left under the requirement of miniaturization.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: provides a transmission system of a three-wheeled electric vehicle, which aims to solve the problems that the output transmission efficiency of the transmission system of the existing three-wheeled electric vehicle is poor and the miniaturization is still to be improved.

The technical solution of the invention is as follows: a transmission system of a three-wheeled electric vehicle is provided, which is arranged on a frame of the three-wheeled electric vehicle and connected with a first rear wheel and a second rear wheel at the rear part of the three-wheeled electric vehicle, a center reference surface is defined at the center of the distance between the first rear wheel and the second rear wheel, a first configuration interval is formed between the center reference surface and the first rear wheel, a second configuration interval is formed between the center reference surface and the second rear wheel, the transmission system of the three-wheeled electric vehicle comprises a motor, a gear type transmission device, a first rear wheel shaft, a differential mechanism and a second rear wheel shaft, the motor is positioned in the second configuration interval and provided with a motor shaft center and a driving shaft, the motor shaft center is arranged on the motor and protrudes towards the first configuration interval, the driving shaft is coaxially arranged on the motor shaft center and is positioned in the first configuration interval, the gear type transmission device is positioned in the first configuration interval and is controlled to be connected with the driving shaft of the motor, the first rear wheel axle is located in the first configuration section, the first rear wheel axle group is arranged on the first rear wheel and is controlled to be connected with the gear type transmission device, the differential mechanism is located in the second configuration section and is coaxially connected with the first rear wheel axle, the differential mechanism is close to the central reference plane, the second rear wheel axle is located in the second configuration section, the second rear wheel axle group is arranged on the second rear wheel and is coaxially connected with the differential mechanism, a central line is defined on the differential mechanism, the central line is perpendicular to the axle center of the first rear wheel axle and is close to the central reference plane, and the motor and the gear type transmission device are located on two sides of the central line of the differential mechanism.

In the above transmission system of the three-wheeled electric vehicle, the driving shaft is provided with a driving gear, the driving gear is located in the first configuration section and is adjacent to the axis of the motor, the gear type transmission device comprises an intermediate shaft, a first transmission gear, a second transmission gear and an output gear, the intermediate shaft is arranged in the first configuration section and is located between the driving shaft and the first rear wheel shaft, the intermediate shaft is parallel to the driving shaft, the first transmission gear is arranged on the intermediate shaft and is engaged with the driving gear, the second transmission gear and the first transmission gear are coaxially arranged on the intermediate shaft, and the output gear is arranged on the first rear wheel shaft and is engaged with the second transmission gear.

In the transmission system of the three-wheeled electric vehicle, the distance from the second transmission gear to the center reference plane is greater than the distance from the first transmission gear to the center reference plane.

In the transmission system of the three-wheeled electric vehicle, the distance from the output gear to the center reference plane is greater than the distance from the center line of the differential to the center reference plane.

In the transmission system of the three-wheeled electric vehicle, the distance from the output gear to the center reference plane is greater than the distance from the center line of the differential to the center reference plane.

The transmission system of the three-wheeled electric vehicle comprises a casing, an accommodating space is formed in the casing, and the driving shaft, the gear type transmission device and the differential mechanism are all located in the accommodating space.

The transmission system of the three-wheeled electric vehicle comprises a protective shell, an accommodating space is formed in the protective shell, and the driving shaft, the intermediate shaft, the first transmission gear, the second transmission gear, the output gear and the differential are all located in the accommodating space.

In the transmission system of the three-wheeled electric vehicle, the protective shell is provided with the parking mechanism, the parking mechanism extends into the accommodating space, the driving shaft is positioned between the parking mechanism and the intermediate shaft, the driving shaft is provided with the parking gear matched with the parking mechanism, and the distance from the parking gear to the central reference plane is greater than the distance from the driving gear to the central reference plane.

The invention has the advantages that: the motor and the gear type transmission device are positioned on two sides of a central line of the differential mechanism, the gear type transmission device is positioned in the first configuration interval, the motor and the differential mechanism are positioned in the second configuration interval, the differential mechanism is adjacent to the central reference plane and the motor, the length difference of the first rear wheel shaft and the second rear wheel shaft is effectively reduced, further, the torque difference is reduced, the output transmission efficiency is improved, the width of a transmission system of the three-wheeled electric vehicle is effectively reduced through the configuration of the motor, the gear type transmission device and the differential mechanism, the requirements of good space configuration and miniaturization are met, and in addition, the situation of starting idling can be improved through the arrangement of the gear type transmission device.

Drawings

The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention. Wherein:

fig. 1 is a schematic sectional top view (one) of a transmission system of a three-wheeled electric vehicle according to a first embodiment of the present invention.

Fig. 2 is a schematic sectional top view of the transmission system of the three-wheeled electric vehicle according to the first embodiment of the present invention.

Fig. 3 is a partially enlarged schematic view of fig. 2.

The reference numbers illustrate:

1: first rear wheel

2: second rear wheel

3: center datum plane

4: a first configuration interval

5: second configuration interval

10: motor with a stator having a stator core

11: motor axle center

12: drive shaft

13: driving gear

14: parking gear

20: gear type transmission device

21: intermediate shaft

22: first transmission gear

23: second transmission gear

24: output gear

30: first rear wheel axle

40: differential gear

41: center line

50: second rear wheel axle

60: protective shell

61: containing space

70: parking mechanism

Detailed Description

The technical means adopted by the invention to achieve the preset purpose are further described below by combining the accompanying drawings and the preferred embodiments of the invention.

As shown in fig. 1 to 3, the transmission system of the three-wheeled electric vehicle of the present invention is disposed on a frame of the three-wheeled electric vehicle and connected to a first rear wheel 1 and a second rear wheel 2 at a rear portion of the three-wheeled electric vehicle, and a center reference plane 3 is defined at a center of a distance between the first rear wheel 1 and the second rear wheel 2, a first configuration interval 4 is formed between the center reference plane 3 and the first rear wheel 1, and a second configuration interval 5 is formed between the center reference plane 3 and the second rear wheel 2, and the transmission system of the three-wheeled electric vehicle includes a motor 10, a gear type transmission device 20, a first rear axle 30, a differential 40, and a second rear axle 50.

The motor 10 is located in the second configuration section 5 and has a motor axis 11 and a driving shaft 12, the motor axis 11 is disposed on the motor 10 and protrudes toward the first configuration section 4, the driving shaft 12 is coaxially disposed on the motor axis 11 and is located in the first configuration section 4, wherein a driving gear 13 is disposed on the driving shaft 12, and the driving gear 13 is located in the first configuration section 4 and is adjacent to the motor axis 11.

The gear transmission device 20 is located in the first configuration section 4 and is controlled to be connected to the driving shaft 12 of the motor 10, the gear transmission device 20 includes an intermediate shaft 21, a first transmission gear 22, a second transmission gear 23 and an output gear 24, the intermediate shaft 21 is disposed in the first configuration section 4 and is located between the driving shaft 12 and the first rear wheel shaft 30, the intermediate shaft 21 is parallel to the driving shaft 12, the first transmission gear 22 is disposed on the intermediate shaft 21 and is engaged with the driving gear 13, the second transmission gear 23 is disposed on the intermediate shaft 21 coaxially with the first transmission gear 22, the output gear 24 is disposed on the first rear wheel shaft 30 and is engaged with the second transmission gear 23, wherein a distance from the second transmission gear 23 to the center reference plane 3 is greater than a distance from the first transmission gear 22 to the center reference plane 3.

The first rear wheel axle 30 is located in the first arrangement section 4, and the first rear wheel axle 30 is assembled on the first rear wheel 1 and is controlled to be connected to the gear type transmission device 20.

The differential 40 is located in the second arrangement region 5 and coaxially connected to the first rear wheel axle 30, the differential 40 is adjacent to the central reference plane 3, the differential 40 defines a center line 41, the center line 41 is perpendicular to the axis of the first rear wheel axle 30 and adjacent to the central reference plane 3, the motor 10 and the gear transmission device 20 are located on both sides of the center line 41 of the differential 40, and the distance from the output gear 24 to the central reference plane 3 is greater than the distance from the center line 41 of the differential 40 to the central reference plane 3.

The second rear wheel axle 50 is located in the second arrangement region 5, the second rear wheel axle 50 is assembled on the second rear wheel 2 and coaxially connected to the differential 40, wherein the differential 40 is located in an arrangement space surrounded by the motor 10, the gear transmission device 20 and the second rear wheel axle 50, and the arrangement space is located in the second arrangement region 5.

In the above, the transmission system includes a protective casing 60, a receiving space 61 is formed in the protective casing 60, the driving shaft 12, the intermediate shaft 21, the first transmission gear 22, the second transmission gear 23, the output gear 24 and the differential 40 are all located in the receiving space 61, the protective casing 60 is provided with a parking mechanism 70, the parking mechanism 70 extends into the receiving space 61, the driving shaft 12 is located between the parking mechanism 70 and the intermediate shaft 21, the driving shaft 12 is provided with a parking gear 14 matched with the parking mechanism 70, and a distance from the parking gear 14 to the central reference plane 3 is greater than a distance from the driving gear 13 to the central reference plane 3.

In the operation process of the transmission system of the three-wheeled electric vehicle, the motor 10 drives the driving shaft 12 through the motor axis 11, the driving shaft 12 rotates, the driving gear 13 rotates along with the driving shaft 12, the driving gear 13 drives the first transmission gear 22 engaged with the driving gear, the first transmission gear 22 drives the intermediate shaft 21 to rotate together, the second transmission gear 23 arranged on the intermediate shaft 21 also rotates together, the second transmission gear 23 drives the output gear 24 engaged with the driving gear, the output gear 24 drives the first rear wheel axle 30, the driven first rear wheel axle 30 drives the second rear wheel axle 50 through the differential mechanism 40, and the first rear wheel 1 and the second rear wheel 2 are driven through the first rear wheel axle 30 and the second rear wheel axle 50.

In the above, the motor 10 and the gear transmission device 20 are located on two sides of the center line 41 of the differential mechanism 40, the gear transmission device 20 is located in the first allocation zone 4, the motor 10 and the differential mechanism 40 are both located in the second allocation zone 5, and the differential mechanism 40 is adjacent to the center reference plane 3 and the motor 10, that is, the differential mechanism 40 is located in the allocation space surrounded by the motor 10, the gear transmission device 20 and the second rear axle 50, so that the differential mechanism 40 is closer to the center reference plane 3 by the allocation pattern of the motor 10, the gear transmission device 20 and the differential mechanism 40, thereby reducing the length difference between the first rear axle 30 and the second rear axle 50.

Wherein, through the configuration of the motor 10, the gear type transmission device 20 and the differential mechanism 40, the differential mechanism 40 is located in the configuration space and adjacent to the central reference plane 3, the width of the transmission system is reduced by utilizing the space configuration, the gear type transmission device 20 is located in the first configuration section 4, and the motor 10 and the differential mechanism 40 are located in the second configuration section 5, the balance of balance weight is considered to improve the configuration optimization.

In summary, the configuration of the motor 10, the gear transmission 20 and the differential 40 adopted by the transmission system of the three-wheeled electric vehicle effectively reduces the length difference between the first rear axle 30 and the second rear axle 50, thereby reducing the torque difference and improving the output transmission efficiency, and effectively reduces the width of the transmission system of the three-wheeled electric vehicle, so as to meet the requirements of good space allocation and miniaturization.

In addition, the gear type transmission device 20 can improve the starting and stopping speed of the three-wheeled electric vehicle adopting the belt type transmission device, and can also improve the abrasion and the slipping condition and improve the power output efficiency.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.