WO2016179761A1

WO2016179761A1 - Speed reduction electric hub system and electric vehicle

Info

Publication number: WO2016179761A1
Application number: PCT/CN2015/078604
Authority: WO
Inventors: 铁兵
Original assignee: 铁兵
Priority date: 2015-05-08
Filing date: 2015-05-08
Publication date: 2016-11-17

Abstract

A speed reduction electric hub system and an electric vehicle. The speed reduction electric hub system comprises a hub structure, a driving motor (1), a first bevel gear (2), a second bevel gear (3), a first cylindrical gear (5), and a second cylindrical gear (6). The driving motor (1) is embedded in a hub and is mounted at a center support shaft of the hub, and an output shaft of the driving motor (1) and a center shaft of the hub are mutually perpendicular to each other. The first bevel gear (2) is connected to the output shaft of the driving motor (1) and is driven by the driving motor (1). The second bevel gear (3) is linked by being engaged with the first bevel gear (2), and can perform 90-degree right-angle direction conversion of the output power of the driving motor (1) transmitted by the first bevel gear (2). The first cylindrical gear (5) is linked by being connected to the second bevel gear (3). The second cylindrical gear (6) is mounted at one side of the hub, and can be linked by being engaged with the first cylindrical gear (5) so as to drive the hub to rotate by using the center support shaft of the hub as the axis. The speed reduction electric hub system has the advantages: the size is small, the weight is light, the integration degree is high, and the driving torque greater than that of a hub motor without a speed reduction mechanism can be obtained; and the speed reduction electric hub system can be used on all electric vehicles such as electric balance vehicles, electric bicycles and electric automobiles.

Description

Reduced electric wheel hub system and electric vehicle

Technical field

The present invention relates to an electric vehicle structure technology, and more particularly to a geared motor hub system and an electric vehicle.

Background technique

For more than 100 years since its invention, the hub motor has provided a good solution for many vehicles, especially the hub motor with no brush and no reducer. In recent years, it has been widely used in electric bicycles and balance vehicles. The current brushless infinite speed wheel hub motor has obvious defects since its application. For example, its output torque is small, and a large number of magnets containing rare earth materials are needed. The shortage of resources will also affect mass production. In addition, although the hub motor with the coaxial and parallel shaft reducer of the motor has many applications in recent years, it is bulky and complicated in structure. Whether it is manufacturing or installation, technical problems and cost problems are difficult to overcome, and this type of control is also restricted. The scope of application of the motor.

Summary of the invention

The invention provides a decelerating electric hub system and an electric vehicle. The output power of the motor is transmitted through the linkage of the bevel gear and the cylindrical gear to realize the secondary deceleration of the hub system, and has the advantages of small volume, light weight, high integration and large torque. .

The invention provides a reduced speed electric hub system, comprising:

a hub structure, a drive motor embedded in the hub and mounted on the hub center support shaft, and the output shaft of the drive motor and the central support shaft of the hub are disposed perpendicular to each other;

a first bevel gear connected to an output shaft of the drive motor and driven by the drive motor;

a second bevel gear meshes with the first bevel gear to interlock, and can convert the output power of the driving motor transmitted by the first bevel gear to a direction of 90 degrees;

a first spur gear coupled to the second bevel gear to be linked;

The second spur gear is mounted on one side of the hub and is engageable with the first spur gear to drive the hub to rotate about the hub central support shaft.

The reduced speed electric hub system provided by the present invention further includes a gear support frame disposed perpendicular to the hub center support shaft and coupled to the drive motor and the hub center support shaft, wherein the second bevel gear and the first spur gear are fixed to the Gear support frame.

The decelerating electric hub system provided by the present invention further includes a gear box fixed to the hub central support shaft, and the second bevel gear and the first spur gear are fixed in the gear box.

In accordance with an embodiment of the present invention, the hub structure further includes a lubrication system disposed within the hub.

According to the embodiment provided by the present invention, the hub system is a closed box structure, and the vehicle power supply system and the control system are all accommodated in the cavity of the box body.

The present invention also provides an electric vehicle having the above-described reduction electric hub system, and a tire is mounted outside the hub.

As described above, the decelerating electric hub system provided by the present invention comprises a drive motor disposed perpendicularly to the central support shaft of the hub, a pair of bevel gears, and a pair of spur gears and a hub structure to form a cross shaft integrated reduction electric wheel hub system, through a The bevel gear is subjected to a 90 degree right angle direction conversion or steering and deceleration of the motor output rotational force, and the rotation of the hub is driven by the linkage of the spur gears. The hub system of the invention can integrate all components of the drive motor, the secondary speed reduction mechanism and the like into the hub, has small volume, light weight, high integration, and can obtain greater driving torque than the hub motor without the speed reduction mechanism. Moreover, the cavity structure of the motor hub can accommodate the vehicle power supply system and the control system into the hub to form an integrated power unit, which is more practical.

The decelerating electric hub system provided by the invention uses a standardized driving motor, which saves a lot of precious rare earth resources compared to the hub motor without a deceleration mechanism of a magnet using a large amount of rare earth materials; on the other hand, compared with other deceleration devices currently used The hub motor, the hub system of the present invention has the advantages of compact structure and light weight.

The hub system provided by the invention can form a standard power unit after being integrated with the power supply system and the control system, which is beneficial to cost reduction, rational utilization of resources and standardized production.

The hub system provided by the present invention can be used in all electric vehicles such as electric balance vehicles, electric bicycles, and electric vehicles.

DRAWINGS

1 is a schematic structural view of an embodiment of a reduced speed electric hub system of the present invention;

2 is a schematic structural view showing the linkage of a bevel gear and a spur gear in the embodiment of the deceleration electric hub system of the present invention;

3 is a schematic overall view of a hub of an embodiment of a reduced speed electric hub system of the present invention.

The label definitions for each part in the figure:

1—drive motor; 2—first bevel gear (also called motor output bevel gear); 3—second bevel gear (also called transmission bevel gear); 4—gear support frame; 5—first cylindrical gear (also Weighing drive cylindrical gear); 6—second cylindrical gear; 7—gear side hub; 8—non-gear side hub; 9—tire; 10—hub center support shaft; 11—remaining space outside motor reducer; 12—wheel Rotation axis; 13 - drive motor rotation axis.

detailed description

In order to make the objects, technical solutions and advantages of the present invention more comprehensible, the present invention will be further described in detail with reference to the embodiments and drawings. The illustrative embodiments of the present invention and the description thereof are intended to explain the present invention, but are not intended to limit the invention.

Referring to Figures 1-3, a decelerating electric hub system according to an embodiment of the present invention includes: a hub structure and a drive motor 1 embedded in the hub and mounted on the hub center support shaft 10, and the output shaft and the hub of the drive motor 1 The central shaft 12 (the central support shaft 10) is disposed perpendicular to each other; the first bevel gear 2 is coupled to and driven by the output shaft of the drive motor 1; the second bevel gear 3 and the first bevel gear The two phases are meshed and interlocked, and the output power of the driving motor transmitted by the first bevel gear 2 can be converted into a direction of a right angle of 90 degrees, and the first-stage deceleration can be provided as needed while achieving the driving force steering; the first cylindrical gear 5 Connected to the second bevel gear 3 to be linked; the second spur gear 6 is mounted on one side of the hub, that is, the gear side hub 7, and the gear side hub 7 and the non-gear side hub 8 are assembled into a complete hub, the second cylinder The gear 6 is meshed with the first spur gear 5 to drive the complete hub to rotate about the hub center support shaft 10, i.e., the central axis 12.

In the hub system, the power output from the drive motor 1 is transmitted to the second bevel gear 3 (transmission bevel gear) via the first bevel gear 2 (output bevel gear) connected to the motor output shaft, and the meshing is performed by the two bevel gears. In conjunction, the output power of the drive motor 1 is switched from a direction perpendicular to the hub rotation axis 12 to a direction along the hub center support shaft 10 (ie, the rotation axis 12), further A pair of cylindrical gear drive hubs are rotated along the axis of rotation 12, i.e., the drive motor and the pair of bevel gears and the pair of cylindrical gears form a cross-shaft integral structure and provide two stages of deceleration.

In this embodiment, a gear support frame 4 connected to the drive motor and the hub central support shaft is disposed in the hub, and is perpendicular to the hub central support shaft, and the second bevel gear 3 and the first spur gear 5 may be fixed to the hub The gear support frame 4 facilitates the fixing and power output of each transmission gear. Alternatively, the bevel gear and the first spur gear may also be secured within the hub by a hub-mounted support shaft gearbox.

The above-mentioned cross shaft integrated reduction electric wheel hub system can not only insert the driving motor as a power source into the hub in a vertical manner, but also integrate all the components of the secondary speed reduction mechanism into the hub, and has small volume, light weight and integration. High features. Moreover, with a standard drive motor, a larger drive torque can be obtained than a hub motor without a speed reduction mechanism, and at the same time, a large amount of valuable rare earth resources can be saved compared to a hub motor without a speed reduction mechanism using a magnet of a large amount of rare earth material.

In addition to providing the drive motor 1 and the secondary reduction mechanism in the hub, other or all of the components may be integrated into the hub, such as a lubrication system disposed within the hub, etc., in accordance with embodiments of the present invention.

The hub of the embodiment can be a closed structure, so that the integrated motor and the deceleration system can obtain a good dustproof and waterproof effect. Moreover, after being integrated with the power supply system and the control system, it can be more widely applied to all electric vehicles such as electric balance vehicles, electric bicycles, and electric vehicles.

In the embodiment of the present invention, the hub system can be a closed box structure, and the vehicle power supply system and the control system are accommodated in the cavity formed thereby, and can be widely applied to electric balance vehicles, electric bicycles, and electric vehicles. All electric vehicles such as cars. For example, if necessary, components such as batteries and motor drive control boards can be placed outside the motor gearbox and in the remaining space 11 of the cabinet structure (see Figure 3) to form a complete standard power module, which is widely used in each. Kind of vehicle.

Therefore, an embodiment of the present invention further provides an electric vehicle having the above-described deceleration electric hub system, and the tire is mounted on the outside of the hub.

It should be noted that in the cross shaft integrated deceleration electric hub system of the present invention, the hub structure and the mounting and fixing manner thereof are the same as those of the prior art, and similarly, when the lubrication system and the power supply and control system are required, Whether it is a structure or a mounting method in a hub, it can be implemented by referring to well-known techniques.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, and not The invention is described in detail with reference to the foregoing embodiments, and those skilled in the art should understand that the technical solutions described in the foregoing embodiments may be modified or some or all of the technical features may be modified. The equivalents are made without departing from the scope of the technical solutions of the embodiments of the present invention.

Claims

A reduced speed electric hub system, characterized in that the hub system comprises:

a hub, and a drive motor embedded in the hub and mounted on the hub center support shaft, and the output shaft of the drive motor and the central support shaft of the hub are disposed perpendicular to each other;

a first bevel gear connected to an output shaft of the drive motor and driven by the drive motor;

a second bevel gear meshes with the first bevel gear to interlock, and can convert the output power of the driving motor transmitted by the first bevel gear to a direction of 90 degrees;

a first spur gear coupled to the second bevel gear to be linked;

The second spur gear is mounted on one side of the hub and is engageable with the first spur gear to drive the hub to rotate about the hub central support shaft.
A reduced speed electric hub system according to claim 1 further comprising a gear support disposed perpendicular to the hub central support shaft, said gear support coupled to said drive motor and said hub central support shaft, said The second bevel gear and the first spur gear are fixed to the gear support frame.
The reduced speed electric hub system of claim 1 further comprising a gearbox fixed to the hub center support shaft, the second bevel gear, the first spur gear being fixed within the gearbox.
The reduced speed electric hub system of claim 1 wherein said hub structure further comprises a lubrication system disposed within the hub.
The decelerating electric hub system according to any one of claims 1 to 4, wherein the hub system is a closed box structure, and the vehicle power supply system and the control system are accommodated in the cavity of the box structure. Inside.
An electric vehicle, characterized in that the electric vehicle has the reduction electric hub system according to any one of claims 1 to 5, and the tire is mounted on the outer side of the hub.