Connecting structure for single-arm motor and rim of electric two-wheeled vehicle
By setting protruding cylinders or cones and annular reinforcement plates on the right end cover of the single-arm motor, and using 63 series bearings and H-shaped or ⊔ spokes, the problem of deformation of the single-arm motor at the connection under high speeds and harsh road conditions is solved, achieving higher strength and longer service life.
Patent Information
- Application Number
- CN202421990798.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-16
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-08-16
AI Technical Summary
Existing single-arm motors are prone to deformation at the connection between the motor and the rear wheels under high speed and harsh road conditions, resulting in large swings of the rear wheels, causing unstable body and posing safety hazards.
A single-arm motor connecting structure is designed, and the strength at the connection is increased by providing a protruding cylinder or cone on the right end cover and connecting it with an annular reinforcement plate; a 63 series deep groove ball bearing is used to reduce bearing wear; the fixed disc and ring disc of the rim are connected by radially extending spokes, improving the resistance to deformation.
It effectively improves the strength at the connection between the motor and the rim, prevents deformation and damage, reduces wear of the motor bearings, extends service life, and reduces the risk of rear wheel swing, and improves the stability of the car body.
Smart Images
Figure CN222555093U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of electric two-wheeled vehicles, in particular to a single cantilever motor and wheel rim combined reinforcement structure. Background Art
[0002] Single-arm motors are used in electric two-wheeled vehicles, especially single-arm hub motors. During use, the motor end cover is often deformed, the rear wheel swings, and the motor bearing is severely worn. In particular, electric two-wheeled vehicles with a speed of more than 80km / h and bad road conditions are prone to deformation at the connection between the motor and the rear wheel, causing large swings of the rear wheel and safety hazards such as unstable vehicle body. Summary of the invention
[0003] The purpose of the utility model is to provide a single-arm motor and rim connection structure for an electric two-wheeled vehicle, which has high strength and will not cause problems such as deformation of the motor end cover, deformation of the rim, and swinging of the rear wheel. At the same time, it reduces the wear of the motor bearing and extends the service life of the motor bearing.
[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0005] The single-arm motor of an electric two-wheeled vehicle is connected to a rim structure. The single-arm motor includes a left end cover and a right end cover that form a closed shell. The single-arm shaft passes through a bearing hole on the left end cover and extends into a bearing hole on the right end cover. The left end cover and the right end cover are rotatably supported on the single-arm shaft by bearings located in the bearing holes respectively. A stator and a winding are arranged on the single-arm shaft, and a rotor is arranged on the left end cover. The stator, the winding and the rotor are all located inside the shell. A plurality of protruding cylinders or cones uniformly distributed on the same circumference are provided on the left inner side surface of the right end cover. The cylinders or cones are connected by an annular reinforcing rib plate protruding from the left inner side surface of the right end cover. A threaded blind hole is opened on the cylinder or cone. The right outer side of the right end cover is connected to the rim by bolts matching the threaded holes.
[0006] As a further improvement to the above-mentioned connection structure between the single-arm motor and the rim of the electric two-wheeled vehicle, the radial reinforcing rib plate protruding from the left inner side of the right end cover is connected to the column or cone and the annular reinforcing rib plate.
[0007] The above-mentioned electric two-wheeled vehicle single-arm motor and rim connection structure, the bearing is a 63 series deep groove ball bearing.
[0008] As a further improvement to the above-mentioned electric two-wheeled vehicle single-arm motor and rim connection structure, a protruding outer ring of the bearing hole is provided on the left inner side surface of the right end cover, and the inner part of the outer ring of the bearing hole is the bearing hole; an annular reinforcing rib plate surrounds the outer ring of the bearing hole; and a radial reinforcing rib protruding from the left inner side surface of the right end cover is provided between the annular reinforcing rib plate and the outer ring of the bearing hole.
[0009] As a further improvement to the above-mentioned electric two-wheeled vehicle single-arm motor and rim connection structure, the center of the rim is a fixed plate with bolt holes for bolts to pass through, the outer periphery of the rim is a ring plate for connecting to the wheel hub, the fixed plate and the ring plate are connected by radially extending spokes, and the cross-section of the spokes is H-shaped or ⊔-shaped.
[0010] The beneficial effects of the utility model are as follows: the stator, winding and rotor are all located inside the closed shell surrounded by the left end cover and the right end cover, dust, rainwater and the like will not enter the shell, ensuring that the inside of the motor is always clean during long-term use, improving the motor performance and extending the motor life; the column or cone protrudes from the left inner side of the right end cover, and is connected with a protruding annular reinforcing rib plate, ensuring the strength of the connection with the rim; the threaded hole is a blind hole, which on the one hand improves the strength of the right end cover, and on the other hand prevents dust, lubricating oil, rainwater and the like from entering the motor; the radial reinforcing rib plate is connected to the column or cone and the annular reinforcing rib plate, further improving the right end cover The strength of the connection with the rim prevents the right end cover from deformation and damage; the 63 series bearings are used to replace the original 62 series bearings, increase the bearing force area, and prevent abnormal wear of the bearings; the right outer side of the right end cover is fixed to the rim by bolts, and there are multiple bolt holes (such as 4) on the fixing plate of the rim, and the bolt holes are located on a circumference with a diameter of not less than 100mm (corresponding to the circumference of multiple cylinders or cones located on the outer circumference of the outer ring of the bearing hole), which greatly increases the area of the installation surface, reduces the impact of the high-speed movement and up and down bumps of the rim on the right end cover of the motor, and reduces or avoids the deformation of the right end cover of the motor or the large swing of the rear wheel after long-term use. The spokes with H-shaped or ⊔-shaped cross-sections also improve the anti-deformation ability of the rim. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a schematic diagram of the connection of the vehicle body single-arm rear flat fork, single-arm shaft, etc.
[0012] Figure 2 It is a schematic diagram of an electric two-wheeler body, a single-arm motor, a rim, etc.
[0013] Figure 3 , Figure 4 They are schematic diagrams of single-arm motors.
[0014] Figure 5 It is a schematic diagram of the single-arm motor structure.
[0015] Figure 6 , Figure 7 They are schematic diagrams of the right end cover.
[0016] Figure 8 , Fig. 9 They are schematic diagrams of the connection between the rim and the hub. DETAILED DESCRIPTION
[0017] See also Figure 3-5The single-arm motor includes a left end cover 2 and a right end cover 1 which form a closed shell. The single-arm shaft 3 passes through the bearing hole on the left end cover and extends into the bearing hole on the right end cover. The left end cover and the right end cover are rotatably supported on the single-arm shaft 3 through deep groove ball bearings (63 series bearings) 4 located in the bearing holes. A stator and a winding (not shown) are arranged on the single-arm shaft 3, and a rotor (not shown) is arranged on the left end cover 2. The stator, winding and rotor are all located inside the shell.
[0018] See also Figure 6 / 7, there are four protruding cones 5 evenly distributed on the same circumference on the left inner side of the right end cover, and the cones are connected by an annular reinforcing rib plate 6 protruding from the left inner side of the right end cover, and a threaded hole (blind hole) 51 is opened on the cone. The annular reinforcing rib plate surrounds the outer ring 7 of the bearing hole protruding from the left inner side of the right end cover; the inner part of the outer ring of the bearing hole is the bearing hole. There are radial reinforcing ribs 8 protruding from the left inner side of the right end cover between the annular reinforcing rib plate 6 and the cone 5 and the outer ring 7 of the bearing hole, and the outer periphery of the annular reinforcing rib plate 6.
[0019] See also Figure 2 , 8 The center of the rim 9 is a fixed plate 92 with a bolt hole 91 for the bolt to pass through, and the outer periphery of the rim is a ring plate 93 for connecting with the hub. The fixed plate and the ring plate are connected by radially extending spokes 94. The cross section of the middle section of the spoke 94 is H-shaped, and the cross section of the two ends of the spoke 94 is ⊔-shaped. The right outer side of the right end cover 1 is fixedly connected to the rim 9 through the bolt hole 91 that matches the threaded hole 51.
[0020] During use, the left end of the single arm shaft 3 is fixed on the vehicle body single arm rear flat fork 10. The front end of the vehicle body single arm rear flat fork 10 is hinged at the middle part of the vehicle body 100, and the rear end of the vehicle body single arm rear flat fork 10 is connected to each other with a shock absorber 101 between the rear end and the rear upper part of the vehicle body 100.
Claims
1. A single-arm motor and wheel rim connection structure for an electric two-wheeled vehicle, characterized in that: The single-arm motor includes a left end cover and a right end cover which form a closed shell. The single-arm shaft passes through the bearing hole on the left end cover and extends into the bearing hole on the right end cover. The left end cover and the right end cover are respectively supported on the single-arm shaft through bearings located in the bearing holes. The stator and winding are arranged on the single-arm shaft, and the rotor is arranged on the left end cover. The stator, winding and rotor are all located inside the shell. The left inner side surface of the right end cover is provided with a plurality of protruding cylinders or cones evenly distributed on the same circumference. The cylinders or cones are connected by an annular reinforcing rib plate protruding from the left inner side surface of the right end cover. The cylinders or cones are provided with threaded blind holes. The right outer side of the right end cover is connected to the rim by bolts matching the threaded holes.
2. The single-arm motor and rim connection structure for an electric two-wheeled vehicle as claimed in claim 1, characterized in that: The radial reinforcing rib plate protruding from the left inner side surface of the right end cover is connected with the column or the vertebral body and the annular reinforcing rib plate.
3. The single-arm motor and wheel rim connection structure for an electric two-wheeled vehicle as claimed in claim 1, characterized in that: The bearing is a 63 series deep groove ball bearing.
4. The single-arm motor and wheel rim connection structure for an electric two-wheeled vehicle as claimed in claim 3, characterized in that: The left inner side of the right end cover is provided with a protruding outer ring of the bearing hole, and the inner part of the outer ring of the bearing hole is the bearing hole; the annular reinforcing rib plate surrounds the outer ring of the bearing hole; and radial reinforcing ribs protruding from the left inner side of the right end cover are provided between the annular reinforcing rib plate and the outer ring of the bearing hole.
5. The single-arm motor and wheel rim connection structure for an electric two-wheeled vehicle as claimed in claim 1, characterized in that: The center of the rim is a fixed plate with bolt holes for bolts to pass through. The outer periphery of the rim is a ring plate for connecting to the hub. The fixed plate and the ring plate are connected by radially extending spokes. The cross section of the spoke is H-shaped or shape.