Motor hub shell

Abstract

The utility model relates to the technical field of motor hub shells, in particular to a motor hub shell. A containing cavity used for containing a motor is defined between the shell and the cover body, a small shaft hole is formed in the plate face of the cover body, a motor wire sealing connecting hole communicated with the containing cavity is formed in the side edge of the cover body, a first inner protruding ring is arranged on the inner plate face of the cover body, and a plurality of stator flange connecting screw holes are formed in the ring end face of the first inner protruding ring. A large shaft hole is formed in the end face of the shell, an inner gear ring hole position is arranged on the inner circumferential wall of the shell, and the large shaft hole is provided with a second inner protruding ring formed by extending inwards. The device is suitable for outer rotor transmission, and required power and torque can be achieved through a small speed ratio of 1: 6.2; the strength of the shell and the cover body is improved through the reinforcing ribs, the strength of the threaded holes is also improved, the shell and the cover body are both hexagonal, each edge is arc-shaped, the weight is further reduced, the hanging frame hole columns arranged in a triangular mode can be better installed on a vehicle body, and the stability and the structural integrity of the vehicle in the running process are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of motor hubs, in particular to a motor hub shell. Background Art

[0002] Cars, motorcycles, and gasoline-powered mopeds are major sources of urban air and noise pollution, and their energy sources are primarily limited to petroleum. In contrast, electric vehicles (EVs) do not face these disadvantages and are therefore expected to become increasingly popular. China is a "bicycle powerhouse." With rising living standards, coupled with limited purchasing power and urban road infrastructure, electric bicycles are poised to become a more competitive and accessible "green" means of transportation than electric vehicles.

[0003] The motor is a key technology in electric bicycles, and its performance directly impacts the overall quality of the vehicle. Therefore, electric motors should be compact, lightweight, slow-speed, high-torque, efficient, and low-cost. However, existing wheel hub shells are thick and heavy, increasing costs and making installation difficult, leading to long processing cycles and high production costs. Furthermore, these factors can lead to numerous performance and safety risks, such as increased energy consumption, high noise levels, and excessive vibration during operation. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: in order to solve the problems existing in the prior art in the above-mentioned background technology, a motor hub shell is provided which has more stable transmission, reduces the use of materials, and thus reduces the investment cost.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a motor hub shell, comprising a shell and a cover body matched with the shell, the shell and the cover body forming an accommodating cavity for accommodating the motor, a small axial hole is provided on the plate surface of the cover body, a motor wire sealing connection hole communicating with the accommodating cavity is provided on the side of the cover body, a first inner convex ring is provided on the inner plate surface of the cover body, and a plurality of stator flange connecting screw holes are provided on the ring end surface of the first inner convex ring; a large axial hole is provided on the end surface of the shell, an inner gear ring hole is provided on the inner circumferential wall of the shell, and the large axial hole is provided with a second inner convex ring extending inward.

[0006] Furthermore, the outer peripheral wall of the shell and the cover is in the shape of a hexagon, and the vertical cross-section of each outer side of the shell and the cover is in the shape of an arc.

[0007] Furthermore, a plurality of screw holes are provided on the plate surface of the cover body, a plurality of reinforcing ribs are provided on the outer sides of the shell body, and a plurality of outer sides of the shell body are installed with bracket hole columns for connecting the entire vehicle. The reinforcing ribs are provided with threaded holes corresponding to the screw holes on the cover body, and the bracket hole columns are provided with through holes along the length direction.

[0008] Furthermore, the number of the hanger hole columns is 3, and the hanger hole columns are arranged in a triangular position.

[0009] Furthermore, a plurality of waist-shaped grooves for reducing weight are provided at the edge of the inner plate surface of the cover body.

[0010] Furthermore, the diameter of the axial hole of the first inner convex ring is larger than the diameter of the small axial hole, and a first step convex ring is provided at the connection between the axial hole of the first inner convex ring and the small axial hole. The axial hole of the first inner convex ring, the small axial hole and the axial hole of the first step convex ring are coaxially arranged.

[0011] Furthermore, an annular protrusion is provided on the outer end plate surface of the shell, the axial hole diameter of the annular protrusion is smaller than the axial hole diameter of the second inner protrusion ring, a second step protrusion ring is provided between the annular protrusion and the second inner protrusion ring, and the axial hole of the annular protrusion, the axial hole of the second inner protrusion ring and the large axial hole are coaxially arranged.

[0012] Beneficial effects of the utility model: The utility model is suitable for outer rotor transmission, and the required power and torque can be achieved through a small speed ratio of 1:6.2, and the transmission is more stable;

[0013] At the same time, the ribs increase the strength of the shell and cover, and also the strength of the threaded holes, thereby improving the sealing strength of the shell and cover. In addition, the shell and cover are both hexagonal, and each side is curved, which further reduces weight and material usage, thereby reducing investment costs and improving the fuel efficiency and performance of the vehicle.

[0014] The bracket holes arranged in a triangular position can be better installed on the vehicle body, ensuring the stability and structural integrity of the vehicle during driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 This utility model Figure 1 Structural diagram of the other direction;

[0018] Figure 3 It is a structural diagram of the housing of the utility model;

[0019] Figure 4 This is a structural diagram of the cover body of the utility model;

[0020] Figure 5 It is the main view of the utility model;

[0021] Figure 6 This is a schematic structural diagram of the utility model in the AA direction;

[0022] In the figure: 1. Shell, 2. Cover, 3. Reinforcement rib, 4. Screw hole, 5. Threaded hole, 6. Bracket hole column, 7. Waist-shaped groove, 8. Annular protrusion, 9. Large shaft hole, 10. Small shaft hole, 11. Motor wire sealing connection hole, 12. First inner convex ring, 13. Stator flange connection screw hole, 14. Step convex ring, 15. Inner gear ring hole, 16. Second inner convex ring, 17. Second step convex ring, 18. Through hole. DETAILED DESCRIPTION

[0023] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0024] like Figures 1 to 6 The motor hub shell shown in the figure comprises a shell 1 and a cover 2 matched with the shell 1. The shell 1 and the cover 2 form a housing cavity for accommodating the motor.

[0025] A small axial hole 10 is provided on the plate surface of the cover body 2, a motor wire sealing connection hole 11 that passes through the accommodating cavity is provided on the side of the cover body 2, a first inner convex ring 12 is provided on the inner plate surface of the cover body 2, and a plurality of stator flange connection screw holes 13 are provided on the ring end surface of the first inner convex ring 12;

[0026] A large shaft hole 9 is provided on the end surface of the housing 1 , and an inner gear ring hole 15 is provided on the inner peripheral wall of the housing 1 . The inner gear ring hole 15 is used to install the inner gear ring. The large shaft hole 9 is provided with a second inner convex ring 16 extending inward.

[0027] like Figure 3 and Figure 4 As shown, the outer peripheral wall shape of the shell 1 and the cover body 2 is hexagonal, and the vertical cross-sectional shape of the outer side of each shell 1 and the cover body 2 is arc-shaped. The six surfaces of the shell 1 are non-load-bearing surfaces. The arc-shaped surfaces are selected to further reduce the weight, reduce the use of materials, and thus reduce the investment cost.

[0028] like Figure 3 and Figure 4 As shown, a number of screw holes 4 are provided on the plate surface of the cover body 2, and a number of reinforcing ribs 3 are provided on the outer sides of the shell body 1 to enhance the strength of the wall thickness of the shell body 1. At the same time, it is also convenient to add threaded holes 5 to facilitate the installation between the shell body 1 and the cover body 2. At the same time, it also prevents problems such as weak connection strength caused by the thin wall of the shell body 1 during the installation process. Bracket hole columns 6 for connecting the entire vehicle are installed on the outer sides of the shell body 1, and threaded holes 5 corresponding to the screw holes 4 on the cover body 2 are provided on the reinforcing ribs 3. A through hole 18 is provided on the bracket hole column 6 along the length direction.

[0029] like Figure 3 As shown, there are three hanger hole columns 6, which are arranged in a triangular position to improve overall stability.

[0030] like Figure 4 As shown, a plurality of waist-shaped grooves 7 for reducing weight are provided at the edge of the inner plate surface of the cover body 2. The weight-reduced motor hub shell enables the motor to accelerate and decelerate faster, thereby improving the overall dynamic response performance.

[0031] like Figure 4 As shown, a bearing is installed in the axial hole of the first inner convex ring 12, the axial hole diameter of the first inner convex ring 12 is larger than the diameter of the small axial hole 10, and a first step convex ring 14 is provided at the connection between the axial hole of the first inner convex ring 12 and the small axial hole 10. The axial hole of the first inner convex ring 12, the small axial hole 10 and the axial hole of the first step convex ring 14 are coaxially arranged.

[0032] like Figure 3 As shown, an annular protrusion 8 is provided on the outer end plate surface of the shell 1. The function of the annular protrusion 8 is to install the central shaft oil seal during internal control. The axial hole diameter of the annular protrusion 8 is smaller than the axial hole diameter of the second inner convex ring 16. A second step convex ring 17 is provided between the annular protrusion 8 and the second inner convex ring 16. The axial hole of the annular protrusion 8, the axial hole of the second inner convex ring 16 and the large axial hole 9 are coaxially arranged.

[0033] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. A motor hub shell, characterized in that: The invention comprises a housing (1) and a cover (2) matched with the housing (1), wherein the housing (1) and the cover (2) form a housing cavity for accommodating a motor. A small axial hole (10) is provided on the plate surface of the cover body (2), a motor wire sealing connection hole (11) that is connected to the accommodating cavity is provided on the side of the cover body (2), a first inner convex ring (12) is provided on the inner plate surface of the cover body (2), and a plurality of stator flange connection screw holes (13) are provided on the ring end surface of the first inner convex ring (12); A large shaft hole (9) is provided on the end surface of the housing (1), an inner gear ring hole (15) is provided on the inner peripheral wall of the housing (1), and a second inner convex ring (16) is provided inwardly extending on the large shaft hole (9).

2. The motor hub shell according to claim 1, characterized in that: The outer peripheral walls of the shell (1) and the cover (2) are hexagonal in shape, and the vertical cross-sectional shape of each outer side of the shell (1) and the cover (2) is arc-shaped.

3. The motor hub shell according to claim 1, characterized in that: The cover (2) is provided with a plurality of screw holes (4) on the plate surface, the shell (1) is provided with a plurality of reinforcing ribs (3) on the outer sides, the shell (1) is provided with a plurality of outer sides with a hanger hole column (6) for connecting the whole vehicle, the reinforcing ribs (3) are provided with threaded holes (5) corresponding to the screw holes (4) on the cover (2), and the hanger hole column (6) is provided with a through hole (18) along the length direction.

4. The motor hub shell according to claim 3, characterized in that: The number of the hanger hole columns (6) is 3, and the hanger hole columns (6) are arranged in a triangular position.

5. The motor hub shell according to claim 1, characterized in that: The inner plate edge of the cover body (2) is provided with a plurality of waist-shaped grooves (7) for reducing weight.

6. The motor hub shell according to claim 1, characterized in that: The diameter of the axial hole of the first inner convex ring (12) is larger than the diameter of the small axial hole (10); a first step convex ring (14) is provided at the connection between the axial hole of the first inner convex ring (12) and the small axial hole (10); the axial hole of the first inner convex ring (12), the small axial hole (10) and the axial hole of the first step convex ring (14) are coaxially arranged.

7. The motor hub shell according to claim 1, characterized in that: An annular protrusion (8) is provided on the outer end plate surface of the shell (1), the axial hole diameter of the annular protrusion (8) is smaller than the axial hole diameter of the second inner protrusion ring (16), a second step protrusion ring (17) is provided between the annular protrusion (8) and the second inner protrusion ring (16), and the axial hole of the annular protrusion (8), the axial hole of the second inner protrusion ring (16) and the large axial hole (9) are coaxially arranged.

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