CN219856661U

CN219856661U - Motor hub structure

Info

Publication number: CN219856661U
Application number: CN202320861468.4U
Authority: CN
Inventors: 岳阳; 张国栋
Original assignee: Nantong Runqun Machinery Technology Co ltd
Current assignee: Nantong Runqun Machinery Technology Co ltd
Priority date: 2023-04-18
Filing date: 2023-04-18
Publication date: 2023-10-20
Anticipated expiration: 2033-04-18

Abstract

The utility model belongs to the technical field of electric vehicle accessories, and particularly discloses a motor hub structure which comprises an outer ring and an inner ring, wherein the outer ring is sleeved on the outer side of the inner ring and fixed between the outer ring and the inner ring through welding, and the cross section of the inner ring is Z-shaped. According to the utility model, the cross section of the inner ring is designed into the Z-shaped structure, so that the weight of the inner ring is reduced by 30-40% compared with that of the inner ring with the traditional annular structure, and the weight and the manufacturing cost of the inner ring are greatly reduced, thereby further reducing the overall weight of the motor hub structure, improving the cruising ability of the electric bicycle and prolonging the service life of the electric bicycle; and the first assembly holes and the second assembly holes which are vertically asymmetric in the inner ring can strengthen the stability when the guard plate is installed, so that the practicability of the utility model is further improved.

Description

Motor hub structure

Technical Field

The utility model belongs to the technical field of electric vehicle accessories, and particularly relates to a motor hub structure.

Background

According to the new national standard of electric bicycle safety technical Specification, the electric bicycle is required to have pedal riding capacity, the highest design speed is not more than 25km/h, the mass of the whole bicycle is not more than 55kg including a battery, the power of a motor is not more than 400W, the nominal voltage of a storage battery is not more than 48V, a motor hub is used as a key component of the electric bicycle, the mass and the heat dissipation performance are extremely important, and if the mass is large, the heat dissipation effect is poor, the cruising capacity and the service life of the electric bicycle are easily influenced.

Therefore, in order to improve the cruising ability and the service life of the electric bicycle, and to achieve the purposes of material reduction, mass reduction and good heat dissipation effect, a motor hub structure is designed to solve the problems.

Disclosure of Invention

The utility model aims to provide a motor hub structure, which can improve the heat dissipation effect while guaranteeing the strength by designing the cross section of an inner ring into a Z-shaped structure, and greatly reduce the weight and the manufacturing cost of the inner ring, thereby further reducing the overall weight of the motor hub structure, and improving the cruising ability and the service life of an electric bicycle.

In order to solve the technical problems, the utility model provides a motor hub structure which comprises an outer ring and an inner ring, wherein the outer ring is sleeved on the outer side of the inner ring and fixed through welding, and the cross section of the inner ring is Z-shaped.

Further, the inner ring comprises a first folded edge, a circular ring and a second folded edge which are sequentially connected from top to bottom, the first folded edge is arranged on the inner side of the circular ring, and the second folded edge is arranged on the outer side of the circular ring.

Further, the first folded edge and the second folded edge are parallel to each other and are respectively perpendicular to the circular ring.

Further, a plurality of first assembly holes are formed in the first folding edge in the circumferential direction, a plurality of second assembly holes are formed in the second folding edge in the circumferential direction, and each first assembly hole and each second assembly hole are staggered up and down.

Further, a groove for installing the tire is formed in the outer ring, and the inner wall of the bottom of the groove is attached to the outer wall of the circular ring.

Further, the thickness of the inner ring is 2 mm-8 mm.

Further, the thickness of the inner ring is 2 mm-3 mm.

Further, the first folded edge, the circular ring and the second folded edge are integrally formed.

Further, the outer ring and the inner ring are made of steel materials.

The beneficial effects of the utility model are as follows:

1. the utility model has smart structural design, light weight and high heat dissipation performance, and can achieve the effects of energy conservation and emission reduction; and the outer ring and the inner ring are manufactured by the steel material, so that the manufacturing cost and the maintenance cost can be greatly reduced.

2. According to the utility model, through the structural design that the cross section of the inner ring is Z-shaped, the thickness can be controlled to be 2-3 mm, the weight of the electric bicycle can be reduced by 30-40% compared with that of the traditional annular inner ring structure, the manufacturing cost is greatly reduced, the strength is ensured, the heat dissipation effect is improved, and the cruising ability and the service life of the electric bicycle are further improved; and the first assembly holes and the second assembly holes which are vertically asymmetric in the inner ring can strengthen the stability when the guard plate is installed, so that the practicability of the utility model is further improved.

Drawings

In order to more clearly illustrate the technical solutions of the present utility model, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic illustration of the motor hub structure of the present utility model;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a schematic view of the structure of the inner ring of the present utility model;

FIG. 4 is a cross-sectional view of FIG. 3;

in the figure: 1-outer ring, 11-groove, 2-inner ring, 21-first hem, 22-circular ring, 23-second hem, 211-first fitting hole, 231-second fitting hole.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In a specific embodiment of the utility model, as shown in fig. 1-4, a motor hub structure comprises an outer ring 1 and an inner ring 2, wherein the outer ring 1 and the inner ring 2 are made of steel materials, so that the manufacturing cost and the maintenance cost can be greatly reduced;

as shown in fig. 2, the outer ring 1 is sleeved on the outer side of the inner ring 2 and fixed between the inner ring 2 through welding, the cross section of the inner ring 2 is Z-shaped, the thickness of the inner ring 2 is 2 mm-8 mm, and the thickness of the inner ring 2 is preferably designed to be 2 mm-3 mm, so that the strength can be ensured and the material cost can be greatly saved; the outer ring 1 is provided with a groove 11 for installing a tire, and the inner wall of the bottom of the groove 11 is attached to the outer wall of the circular ring 22.

Specifically, as shown in fig. 3-4, the inner ring 2 includes a first folded edge 21, a circular ring 22 and a second folded edge 23 which are sequentially connected from top to bottom, the first folded edge 21 is disposed at the inner side of the circular ring 22, the second folded edge 23 is disposed at the outer side of the circular ring 22, and the first folded edge 21, the circular ring 22 and the second folded edge 23 are integrally formed;

in this embodiment, the first flange 21 and the second flange 23 are parallel to each other and are perpendicular to the ring 22 respectively and are disposed at 90 ° respectively, a plurality of first assembly holes 211 are circumferentially disposed on the first flange 21, a plurality of second assembly holes 231 are circumferentially disposed on the second flange 23, and each of the first assembly holes 211 and the second assembly holes 231 are vertically staggered. The first fitting hole 211 and the second fitting hole 231 are used for fitting the guard plate, and the design of the asymmetric fitting holes can strengthen the stability of the guard plate during installation.

The utility model has smart structural design and high heat dissipation performance, and can achieve the effects of energy conservation and emission reduction; specifically, the cross section of the inner ring is of a Z-shaped structure design, the weight of the inner ring can be reduced by 30-40% compared with that of the inner ring of a traditional annular structure, and the weight and the manufacturing cost of the inner ring are greatly reduced, so that the overall weight of the motor hub structure is further reduced, and the cruising ability and the service life of the electric bicycle are improved; and the first assembly holes and the second assembly holes which are vertically asymmetric in the inner ring can strengthen the stability when the guard plate is installed, so that the practicability of the utility model is further improved.

The above disclosure is only a preferred embodiment of the present utility model, and it is needless to say that the scope of the utility model is not limited thereto, and therefore, the equivalent changes according to the claims of the present utility model still fall within the scope of the present utility model.

Claims

1. The motor hub structure is characterized by comprising an outer ring (1) and an inner ring (2), wherein the outer ring (1) is sleeved on the outer side of the inner ring (2) and fixed through welding, and the cross section of the inner ring (2) is Z-shaped;

the inner ring (2) comprises a first folded edge (21), a circular ring (22) and a second folded edge (23) which are sequentially connected from top to bottom, the first folded edge (21) is arranged on the inner side of the circular ring (22), and the second folded edge (23) is arranged on the outer side of the circular ring (22);

the first flanging (21) is circumferentially provided with a plurality of first assembly holes (211), the second flanging (23) is circumferentially provided with a plurality of second assembly holes (231), and each first assembly hole (211) and each second assembly hole (231) are vertically staggered.

2. A motor hub structure according to claim 1, characterized in that said first flange (21) and said second flange (23) are mutually parallel and are respectively arranged perpendicular to said circular ring (22).

3. A motor hub structure according to claim 1, wherein the outer ring (1) is provided with a groove (11) for mounting a tire, and the bottom inner wall of the groove (11) is attached to the outer wall of the circular ring (22).

4. A motor hub structure according to claim 1, characterized in that the thickness of the inner ring (2) is 2-8 mm.

5. A motor hub structure according to claim 4, characterized in that the thickness of the inner ring (2) is 2-3 mm.

6. A motor hub structure according to claim 1, characterized in that the first flange (21), the ring (22) and the second flange (23) are integrally formed.

7. A motor hub structure according to claim 1, characterized in that the material of the outer ring (1) and the inner ring (2) is steel.