CN216545531U

CN216545531U - Lightweight wheel hub and motor thereof

Info

Publication number: CN216545531U
Application number: CN202122584868.9U
Authority: CN
Inventors: 王加许; 王健; 丁伟; 胡萧峰
Original assignee: TAIZHOU JINYU ELECTROMECHANICAL CO Ltd
Current assignee: TAIZHOU JINYU ELECTROMECHANICAL CO Ltd
Priority date: 2021-10-26
Filing date: 2021-10-26
Publication date: 2022-05-17
Anticipated expiration: 2031-10-26

Abstract

The utility model relates to a light hub and a motor thereof, and the light hub comprises a hub body, wherein the hub body comprises a magnetic conduction ring and a rim, the magnetic conduction ring is connected with the rim through a plurality of connecting ribs, the connecting ribs are uniformly distributed, one side of the magnetic conduction ring, which is close to the rim, is uniformly provided with a plurality of mounting lugs and a plurality of screw holes, the screw holes are positioned on the mounting lugs, and a motor end cover is arranged on the screw holes. The wheel rim and the connecting ribs are made of magnesium alloy materials. Compared with the prior art, the hub body is made of magnesium alloy with low density, the screw holes are formed in the mounting lugs, the thickness of the magnetic conduction rings is reduced, and thick ribs and thin ribs are arranged, so that stable and firm connection is guaranteed, the mounting strength of the motor end cover is guaranteed, the weight of the hub body is reduced, the battery capacity can be increased within the weight limiting range, the endurance mileage of the motor is improved, and the competitiveness of the whole vehicle is improved.

Description

Lightweight wheel hub and motor thereof

Technical Field

The utility model relates to a light-weight hub and a motor thereof, and belongs to the technical field of electric vehicle motors.

Background

The electric vehicle comprises an electric bicycle, an electric motorcycle, an electric automobile, an electric scooter and the like, and the electric vehicle is used as a new energy vehicle, so that the electric vehicle meets the requirement of a civilian travel tool for the majority of citizens due to a plurality of characteristics of economy, environmental protection, fashion and the like. With the release of the new national standard GB17761-2018 safety technical Specification for electric bicycles, the terms in the whole text are mandatory standards. The key clause requires that the weight of the whole vehicle is not more than 55kg, so that the light weight design requirement of the whole vehicle is urgent.

However, the existing motor hub of the electric vehicle is made of iron, the weight is heavy, the battery capacity must be increased when the driving mileage of the whole vehicle is increased at present, but the increase of the battery capacity increases the weight of the whole vehicle, and the requirement that the weight of the whole vehicle is limited to 55kg in the new national standard cannot be met. Even if a few parts of the motor hubs are made of aluminum alloy, the weight is still heavier.

As shown in the attached drawing 2 of the specification, the end face of the magnetic conductive ring 21 on the hub 2 used in the current electric vehicle is also provided with a plurality of fastening screw holes 22, the fastening screw holes 22 are used for mounting the motor end cover, in order to ensure that the fastening screw holes 22 on the end face of the magnetic conductive ring 21 have enough space and strength, the thickness of the magnetic conductive ring 21 is designed according to the maximum size requirement, the magnetic conductive ring 21 is heavier due to the large wall thickness, and the material consumption is increased; in addition, the thick and heavy hub magnetic ring 21 also promotes the weight of the motor assembly to be higher.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a light-weight hub and a motor thereof aiming at the defects of the prior art.

The technical scheme adopted by the utility model for realizing the purpose is as follows:

the utility model provides a lightweight wheel hub, includes the wheel hub body, the wheel hub body includes magnetic ring and rim, magnetic ring with connect through a plurality of splice bars between the rim, and is a plurality of splice bar evenly distributed, magnetic ring is close to one side of rim evenly made has a plurality of installation lugs and a plurality of screw hole, the screw hole is located on the installation lug, install the motor end cover on the screw hole.

As a further optimization of the above technical solution: the wheel rim and the connecting ribs are made of magnesium alloy materials.

As a further optimization of the above technical solution: the connecting ribs comprise thick ribs and thin ribs, and the thick ribs and the thin ribs are arranged at intervals.

As a further optimization of the above technical solution: the screw hole with the quantity of installation lug is eight, the quantity of splice bar is ten, wherein thick muscle is equipped with five, thin muscle also is equipped with five, the installation lug with the splice bar distributes that staggers.

The motor of a lightweight wheel hub in above-mentioned technical scheme has been used, its characterized in that includes motor shaft and motor end cover, be provided with the stator on the motor shaft, the stator outside is encircleed and is provided with the rotor, the rotor includes the wheel hub body, the motor shaft passes the wheel hub body, the stator is located this is internal to wheel hub, the stator with the magnetic conduction ring cooperation, the screw passes the motor end cover with the screw hole, thereby will the motor end cover is installed on the wheel hub body.

Compared with the prior art, the rim and the connecting ribs are made of magnesium alloy with low density, the screw holes are arranged on the mounting lugs, the thickness of the magnetic conduction rings is reduced, and thick ribs and thin ribs are arranged, so that the stable and firm connection is ensured, the mounting strength of the motor end cover is ensured, the weight of the hub body is reduced, the battery capacity can be increased within the weight limit range, the endurance mileage of the motor is improved, and the competitiveness of the whole vehicle is increased; and the application range is wide, and the electric bicycle is suitable for most electric bicycle models, including electric bicycles, electric motorcycles, electric automobiles and the like.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a perspective view of a hub in the prior art.

Detailed Description

The utility model is further described with reference to the following figures and detailed description. As shown in fig. 1-2, a light-weight hub includes a hub body 1, the hub body 1 includes a magnetic conductive ring 11 and a rim 14, the magnetic conductive ring 11 and the rim 14 are connected by a plurality of connecting ribs 13, and the connecting ribs 13 are uniformly distributed. The rim 14 and the tie bars 13 are made of a magnesium alloy material. The magnesium alloy is formed by adding other elements into magnesium as a base, and is characterized in that: small density (about 1.8g/cm 3), high strength, good heat dissipation, good shock absorption, etc. The density of the aluminum alloy material is 2.63-2.85 g/cm, and the density of the iron material is 7.86g/cm³Therefore, the weight of the hub body 1 consisting of the rim 14 and the connecting ribs 13 made of the magnesium alloy material is far less than that of a hub made of an aluminum alloy material or an iron material with the same volume. The reduction of 1 weight of wheel hub body for can increase battery capacity in weight restriction within range, thereby improve the motor continuation of the journey mileage, increase the competitiveness of whole car.

In the above technical scheme: one side of the magnetic conductive ring 11 close to the rim 14 is uniformly provided with a plurality of mounting lugs 12 and a plurality of screw holes 15, the screw holes 15 are positioned on the mounting lugs 12, and the motor end cover is arranged on the screw holes 15. The screw hole 15 is located on the mounting convex block 12, so that the mounting strength of the motor end cover is ensured, and the thickness of the magnetic conduction ring 11 is reduced, so that the weight of the magnetic conduction ring 11 is reduced, the material consumption is reduced, and the weight of the hub body 1 is reduced. The number of the screw holes 15 and the mounting projections 12 in this embodiment is eight.

In the above technical scheme: the connecting rib 13 includes a plurality of thick ribs 131 and a plurality of thin ribs 132, and the plurality of thick ribs 131 and the plurality of thin ribs 132 are arranged at intervals. The connecting ribs 13 in this embodiment are provided with ten in total, i.e., five thick ribs 131 and five thin ribs 132. The plurality of connecting ribs 13 are arranged, so that the connection between the rim 14 and the magnetic conduction ring 11 is more stable and reliable, and the thick ribs 131 are responsible for ensuring the connection strength and preventing the connecting ribs 13 from being broken in the running process of the motor; the thin ribs 132 not only play a role in stabilizing the connection, but also reduce the weight of the connecting ribs 13 to a certain extent, thereby ensuring stable and firm connection and reducing the weight of the hub body 1. The connecting ribs 13 and the mounting lugs 12 are staggered in this embodiment.

The motor that has used a lightweight wheel hub among the above-mentioned technical scheme specifically is external rotor electric machine, including motor shaft and motor end cover, is provided with the stator on the motor shaft, and the stator outside is around being provided with the rotor. The rotor includes wheel hub body 1, and the motor shaft passes wheel hub body 1, and the stator is located wheel hub body 1, and the stator cooperates with magnetic ring 11, and the screw passes motor end cover and screw hole 15 to install the motor end cover on wheel hub body 1.

The foregoing detailed description of the preferred embodiments of the utility model has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concept of the present invention should fall within the scope of the present invention.

Claims

1. The light-weight hub is characterized by comprising a hub body (1), wherein the hub body (1) comprises a magnetic conduction ring (11) and a rim (14), the magnetic conduction ring (11) is connected with the rim (14) through a plurality of connecting ribs (13), the connecting ribs (13) are uniformly distributed, one side, close to the rim (14), of the magnetic conduction ring (11) is uniformly provided with a plurality of mounting lugs (12) and a plurality of screw holes (15), the screw holes (15) are located on the mounting lugs (12), and motor end covers are mounted on the screw holes (15);

the wheel rim (14) and the connecting ribs (13) are made of magnesium alloy materials;

the connecting ribs (13) comprise thick ribs (131) and thin ribs (132), and the thick ribs (131) and the thin ribs (132) are arranged at intervals.

2. The lightweight hub according to claim 1, wherein the number of the screw holes (15) and the number of the mounting protrusions (12) are eight, the number of the connecting ribs (13) is ten, the number of the thick ribs (131) is five, the number of the thin ribs (132) is five, and the mounting protrusions (12) are staggered with the connecting ribs (13).

3. The motor with the light-weight hub is characterized by comprising a motor shaft and a motor end cover, wherein a stator is arranged on the motor shaft, a rotor is arranged on the outer side of the stator in a surrounding mode, the rotor comprises the hub body (1), the motor shaft penetrates through the hub body (1), the stator is located in the hub body (1), the stator is matched with the magnetic conduction ring (11), and a screw penetrates through the motor end cover and the screw hole (15), so that the motor end cover is installed on the hub body (1).