Sliding device in hub motor

Abstract

The utility model relates to a sliding device in a hub motor, which belongs to the field of electric vehicle accessories, a high-speed motor shell is fixedly mounted on a hub middle shaft, an overrun clutch, a motor rotor and a motor stator are mounted in the high-speed motor shell, and a shell supporting sleeve is arranged on the side surface of the high-speed motor shell. A driving synchronizing wheel and a driving synchronizing wheel positioning bearing are installed in the shell supporting sleeve, a hub end cover bearing position is arranged on the right side face of the shell supporting sleeve, and a synchronizing wheel bearing position and a synchronizing wheel spline shaft are arranged on the driving synchronizing wheel. The rotor of the high-speed motor drives the overrun clutch to rotate at a high speed, then the overrun clutch drives the driving synchronizing wheel to rotate, and the driving synchronizing wheel pulls the hub outside the high-speed motor to rotate through the synchronous belt. When the rotating speed of the hub is larger than that of the driving synchronizing wheel, the overrun clutch and the driving synchronizing wheel are disconnected, and the hub freely slides forwards.

Description

TECHNICAL FIELD

[0001] The sliding device in the hub motor interior belongs to the field of electric vehicle accessories, and relates to a sliding device between a rotor and a synchronous wheel. BACKGROUND

[0002] The hub motor, the motor installed in the hub interior is called the hub motor. The current hub motor is roughly divided into two kinds, one is the direct drive hub motor, and the other is the gear reduction hub motor. The advantages of the direct drive hub motor are simple structure, small noise and small sliding resistance, and the disadvantages are small torque and large power consumption. The advantages of the gear reduction motor are large torque and small power consumption, and the disadvantages are large noise and large secondary gear resistance between the rotor and the hub during sliding. Therefore, the defect of large gear resistance during sliding of the hub reduction motor needs to be solved.

[0003] Application No. ZL2022229377839 A kind of electric vehicle reduction hub motor belongs to the field of electric vehicle accessories, the two sides of hub axle are installed with face basin-shaped hub, the outer edge of two hubs is installed with circular ring-shaped steel ring, the left side and right side of the upper middle part of hub axle are vertically installed with disc-shaped motor left side cover and motor right side cover, the recess in the inner wall of motor stator is installed with annular coil between motor left side cover and motor right side cover, the central part between motor left side cover and motor right side cover is installed with cylindrical motor axle, the upper surface of motor axle is installed with cylindrical motor rotor, the driving gear installed on the right top end of motor axle is engaged with the annular gear ring installed on the left side surface of the right hub of hub axle, the above high-speed motor drives the driving gear to rotate the gear ring, the gear ring drives the hub to rotate, the hub drives the steel ring and tire to rotate and push the electric vehicle forward.

[0004] Application No. ZL2023214753190 A kind of electric vehicle hub motor, including stator and rotor, the stator includes stator core, the stator core includes stator ring, the rotor includes magnetic ring, the magnetic ring is sleeved on the outside of the stator, also includes connecting structure, the magnetic ring includes middle part, the connecting structure is located at the end of the middle part, the end of the connecting structure is provided with a plurality of first installation holes, the first installation hole is located on the inner side of the curve surface where the inner circumferential surface of the stator ring is located. Compared with the prior art, in the utility model, the first installation hole is located on the first fixed part, which effectively avoids the restriction that the wall thickness of the magnetic ring must be greater than the hole diameter of the threaded hole, thereby reducing the radial wall thickness of the magnetic ring and achieving weight reduction; the connecting structure is used for avoiding the winding, so that the screw in the first installation hole is located on the inner side of the curve surface where the inner circumferential surface of the stator ring is located, to prevent the screw from interfering with the winding or the stator ring during installation.

[0005] The electric vehicle reduction hub motor adopts a hub shaft, a hub, a steel ring, a motor left side cover, a motor right side cover, a motor stator, a coil, a motor shaft, a motor rotor, a driving gear, and a gear ring, realizes that the high-speed motor drives the driving gear to drive the gear ring to rotate, the gear ring drives the hub to rotate, and the hub drives the steel ring and the tire to rotate to push the electric vehicle to move forward, and the electric vehicle hub motor adopts a stator, a rotor, a stator core, a stator ring, a magnetic conducting ring, a connecting structure, and a first mounting hole, realizes that the wall thickness of the magnetic conducting ring must be greater than the diameter of the threaded hole, thereby reducing the radial wall thickness of the magnetic conducting ring and achieving weight reduction. Contents of the utility model

[0006] The sliding device in the hub motor provides a cylindrical hub shaft, a disc-shaped high-speed motor is installed on the upper surface of the hub shaft, a disc-shaped overrunning clutch is installed on the side surface of the rotor in the high-speed motor, a cylindrical driving synchronous wheel is installed on the side surface of the overrunning clutch, the rotor of the high-speed motor drives the overrunning clutch to rotate at high speed, the overrunning clutch drives the driving synchronous wheel to rotate, the driving synchronous wheel drives the hub outside the high-speed motor to rotate through a synchronous belt, when the rotating speed of the hub is greater than that of the driving synchronous wheel, the overrunning clutch and the driving synchronous wheel are disconnected, the hub realizes free sliding forward, and the resistance of the motor rotor to the hub is reduced.

[0007] The technical scheme of the utility model is as follows, a sliding device in a hub motor includes a hub shaft 1, a high-speed motor shell 2 is fixedly installed on the upper surface of the hub shaft 1, an overrunning clutch 5, a motor rotor 7 and a motor stator are installed in the high-speed motor shell 2, a shell support sleeve 3 is arranged on the side surface of the high-speed motor shell 2, a driving synchronous wheel 6 and a driving synchronous wheel positioning bearing 8 are installed in the shell support sleeve 3, a hub end cover bearing position 4 is arranged on the right side surface of the shell support sleeve 3, a synchronous wheel bearing position 9 and a synchronous wheel spline shaft 10 are arranged on the upper surface of the driving synchronous wheel 6, the motor rotor 7 is fixedly connected with the overrunning clutch 5, and the overrunning clutch 5 is connected with the synchronous wheel spline shaft 10.

[0008] Further, the high-speed motor shell 2 is a hollow disc, a cylindrical shaft sleeve is arranged on the central part of the left side surface of the high-speed motor shell 2, a hub end cover bearing position 4 is arranged on the left side outside the shaft sleeve, and a spline hole in the shaft sleeve is fixedly connected with the spline shaft on the left side of the hub shaft 1.

[0009] Further, the hollow cylindrical shell support sleeve 3 is installed on the right side of the high-speed motor shell 2, the left side of the shell support sleeve 3 is circularly opened, the edge of the opening is fixedly connected with the circular opening in the center of the right side of the high-speed motor shell 2, the central part of the right side of the shell support sleeve 3 is provided with a cylindrical shaft sleeve, the outer surface of the shaft sleeve is provided with a wheel hub end cover bearing position 4, the spline hole in the inner part of the shaft sleeve is fixedly connected with the spline shaft on the right side of the wheel hub shaft 1, the left side and the middle part of the upper part of the shell support sleeve 3 are provided with D-shaped openings, and the inside of the right side of the shell support sleeve 3 is installed with a driving synchronous wheel positioning bearing 8.

[0010] Further, the motor rotor 7 is disc-shaped, and is installed in the middle part of the wheel hub shaft 1 through a bearing, the central part of the right side of the motor rotor 7 is fixedly connected with the outer edge of the circular ring-shaped overrunning clutch 5 through a ring-shaped connecting plate, and the inner circle of the overrunning clutch 5 is provided with a spline hole.

[0011] Further, the driving synchronous wheel 6 is cylindrical, and is movably installed in the middle part of the wheel hub shaft 1, the synchronous wheel spline shaft 10 provided on the left side of the driving synchronous wheel 6 is connected with the spline hole in the center of the overrunning clutch 5, the protruding part in the middle part of the driving synchronous wheel 6 is gear-shaped, and the gear-shaped two ends are respectively installed with circular ring-shaped retainer rings, and the synchronous wheel bearing position 9 provided on the right side of the driving synchronous wheel 6 is connected with the inner ring of the driving synchronous wheel positioning bearing 8.

[0012] Further, the right side of the overrunning clutch 5 is provided with an annular bearing position, the bearing is installed in the bearing position, the synchronous wheel spline shaft 10 on the left side of the driving synchronous wheel 6 passes through the bearing inner hole on the right side of the overrunning clutch 5 and is connected with the spline hole in the center of the overrunning clutch 5.

[0013] Advantages: the existing direct drive wheel hub motor has the advantages of simple structure, small noise and small sliding resistance, but has the disadvantages of small torque and large power consumption; the gear reduction motor has the advantages of large torque and small power consumption, but has the disadvantages of large noise and large resistance between the rotor and the wheel hub during sliding.

[0014] A sliding device in a wheel hub motor adopts a high-speed motor installed on the upper part of the wheel hub shaft, an overrunning clutch installed on the side of the rotor in the high-speed motor, and a driving synchronous wheel installed on the side of the overrunning clutch, the rotor of the high-speed motor drives the overrunning clutch to rotate at high speed, the overrunning clutch drives the driving synchronous wheel to rotate, the driving synchronous wheel pulls the wheel hub outside the high-speed motor to rotate through a synchronous belt, when the rotating speed of the wheel hub is greater than that of the driving synchronous wheel, the overrunning clutch and the driving synchronous wheel are disconnected, the wheel hub realizes free sliding forward, and the resistance of the motor rotor to the wheel hub is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to describe the technical scheme of the utility model in detail, the drawings needed to be used are simply described as follows, and the drawings in the following description are only some schematic diagrams of the utility model, and for those skilled in the art, more drawings can be obtained by combining these drawings without creativity.

[0016] Figure 1 It is a front view of a sliding device inside a wheel hub motor;

[0017] Figure 2 It is a structural schematic diagram of a wheel hub axle, overrunning clutch, driving synchronous wheel, motor rotor and driving synchronous wheel positioning bearing;

[0018] Figure 3 It is a structural schematic diagram of a driving synchronous wheel, synchronous wheel bearing position and synchronous wheel spline shaft;

[0019] In the figure, 1 is a wheel hub axle, 2 is a high-speed motor shell, 3 is a shell support sleeve, 4 is a wheel hub end cover bearing position, 5 is an overrunning clutch, 6 is a driving synchronous wheel, 7 is a motor rotor, 8 is a driving synchronous wheel positioning bearing, 9 is a synchronous wheel bearing position, and 10 is a synchronous wheel spline shaft. DETAILED DESCRIPTION

[0020] The structure and shape of the utility model are described in detail in combination with the drawings and reference numerals: Example 1

[0021] Referring to the drawings Figures 1-3A sliding device inside a wheel hub motor includes a wheel hub shaft 1, the wheel hub shaft 1 is used to support a wheel hub end cover and a high-speed motor shell 2 and a motor rotor 7, the upper surface of the wheel hub shaft 1 is fixedly installed with the high-speed motor shell 2, the high-speed motor shell 2 is used to support a motor stator, the inside of the high-speed motor shell 2 is installed with a overrunning clutch 5 and the motor rotor 7 and the motor stator, the motor rotor 7 is used to drive the overrunning clutch 5 to rotate, the overrunning clutch 5 is used to drive a driving synchronous wheel 6 to rotate and disconnect with the driving synchronous wheel 6 when the rotation speed of the driving synchronous wheel 6 is greater than that of the overrunning clutch 5, the side surface of the high-speed motor shell 2 is provided with a shell support sleeve 3, the shell support sleeve 3 is used to support the high-speed motor shell 2 and install a driving synchronous wheel positioning bearing 8, the inside of the shell support sleeve 3 is installed with the driving synchronous wheel 6 and the driving synchronous wheel positioning bearing 8, the driving synchronous wheel 6 is used to pull the wheel hub to rotate through a synchronous belt, the driving synchronous wheel positioning bearing 8 is used to fix the driving synchronous wheel 6, the right side surface of the shell support sleeve 3 is provided with a wheel hub end cover bearing position 4, the wheel hub end cover bearing position 4 is used to support the wheel hub end cover, the upper surface of the driving synchronous wheel 6 is provided with a synchronous wheel bearing position 9 and a synchronous wheel spline shaft 10, the synchronous wheel bearing position 9 is used to be connected with the inner hole of the driving synchronous wheel positioning bearing 8, the synchronous wheel spline shaft 10 is used to be connected with the spline hole of the overrunning clutch 5, the motor rotor 7 is fixedly connected with the overrunning clutch 5, and the overrunning clutch 5 is connected with the synchronous wheel spline shaft 10.

[0022] Referring to the accompanying drawings Figure 1 The high-speed motor shell 2 is a hollow disc, the central part of the left side surface of the high-speed motor shell 2 is provided with a cylindrical shaft sleeve, the left side of the outside of the shaft sleeve is provided with the wheel hub end cover bearing position 4, and the spline hole in the inside of the shaft sleeve is fixedly connected with the spline shaft on the left side of the wheel hub shaft 1.

[0023] Referring to the accompanying drawings Figures 1-2 The shell support sleeve 3 installed on the central part of the right side surface of the high-speed motor shell 2 is a hollow cylinder, the left side surface of the shell support sleeve 3 is a circular opening, the edge of the opening is fixedly connected with the circular opening in the central part of the right side surface of the high-speed motor shell 2, the central part of the right side surface of the shell support sleeve 3 is provided with a cylindrical shaft sleeve, the outside of the shaft sleeve is provided with the wheel hub end cover bearing position 4, the spline hole in the inside of the shaft sleeve is fixedly connected with the spline shaft on the right side of the wheel hub shaft 1, the left side and the middle part above the shell support sleeve 3 are provided with D-shaped openings, and the inside of the right side of the shell support sleeve 3 is installed with the driving synchronous wheel positioning bearing 8.

[0024] Referring to the accompanying drawings Figure 2 The motor rotor 7 is disc-shaped, is installed in the middle part of the wheel hub shaft 1 through bearings, the central part of the right side surface of the motor rotor 7 is fixedly connected with the outer edge of the circular ring-shaped overrunning clutch 5 through an annular connecting plate, and the spline hole is arranged in the inner circle of the overrunning clutch 5.

[0025] Referring to the drawings Figures 2-3 The driving synchronous wheel 6 is cylindrical and movably mounted in the middle of the hub shaft 1. The synchronous wheel spline shaft 10 arranged on the left side of the driving synchronous wheel 6 is connected with the spline hole in the center of the overrunning clutch 5. The protruding part in the middle of the driving synchronous wheel 6 is gear-shaped, and the gear-shaped two ends are respectively provided with annular retainer rings. The synchronous wheel bearing position 9 arranged on the right side of the driving synchronous wheel 6 is connected with the inner ring of the driving synchronous wheel positioning bearing 8. Embodiment two

[0026] The right side of the overrunning clutch 5 is provided with an annular bearing position, and a bearing is arranged in the bearing position. The synchronous wheel spline shaft 10 on the left side of the driving synchronous wheel 6 penetrates the bearing inner hole on the right side of the overrunning clutch 5 and is connected with the spline hole in the center of the overrunning clutch 5.

[0027] The above is only the general disclosure of the present application, and does not limit the present application in any form. Any equivalent changes, adjustments, modifications and evolution of the above-mentioned technology within the technical scheme of the present application, made by those skilled in the art, are all within the protection scope of the present application.

Claims

1. A coasting device inside a wheel hub motor, comprising a hub axle, characterized in that The upper surface of the hub middle shaft is fixedly provided with a high-speed motor shell, the inside of the high-speed motor shell is provided with an overrunning clutch, a motor rotor and a motor stator, the side surface of the high-speed motor shell is provided with a shell support sleeve, the inside of the shell support sleeve is provided with a driving synchronous wheel and a driving synchronous wheel positioning bearing, the right side surface of the shell support sleeve is provided with a hub end cover bearing position, the upper surface of the driving synchronous wheel is provided with a synchronous wheel bearing position and a synchronous wheel spline shaft, the motor rotor is fixedly connected with the overrunning clutch, and the overrunning clutch is connected with the synchronous wheel spline shaft.

2. The in-wheel motor internal slide device according to claim 1, characterized by The high-speed motor shell is a hollow disc, the central part of the left side surface of the high-speed motor shell is provided with a cylindrical shaft sleeve, the left side of the outside of the shaft sleeve is provided with a hub end cover bearing position, and the spline hole in the inside of the shaft sleeve is fixedly connected with the spline shaft on the left side of the hub middle shaft.

3. The coasting device in the interior of the wheel hub motor according to claim 1 or 2, characterized in that The shell support sleeve installed on the right side surface of the high-speed motor shell is a hollow cylinder, the left side surface of the shell support sleeve is a circular opening, the edge of the opening is fixedly connected with the circular opening in the central part of the right side surface of the high-speed motor shell, the central part of the right side surface of the shell support sleeve is provided with a cylindrical shaft sleeve, the outside of the shaft sleeve is provided with a hub end cover bearing position, the spline hole in the inside of the shaft sleeve is fixedly connected with the spline shaft on the right side of the hub middle shaft, the left side and the middle part above the shell support sleeve are provided with a D-shaped opening, and the inside of the right side of the shell support sleeve is provided with a driving synchronous wheel positioning bearing.

4. The in-wheel motor internal slide device according to claim 1, characterized by The motor rotor is disc-shaped, is installed in the middle part of the hub middle shaft through a bearing, the central part of the right side surface of the motor rotor is fixedly connected with the outer edge of the annular overrunning clutch through an annular connecting plate, and the spline hole is arranged in the inner circle of the overrunning clutch.

5. The in-wheel motor internal slide device according to claim 1, characterized by The driving synchronous wheel is cylindrical, is movably installed in the middle part of the hub middle shaft, the synchronous wheel spline shaft arranged on the left side of the driving synchronous wheel is connected with the spline hole in the central part of the overrunning clutch, the protruding part in the middle part of the driving synchronous wheel is gear-shaped, annular retainer rings are arranged at the two ends of the gear-shaped part, and the synchronous wheel bearing position arranged on the right side of the driving synchronous wheel is connected with the inner ring of the driving synchronous wheel positioning bearing.

6. The in-wheel motor according to claim 1 or 4, wherein The right side surface of the overrunning clutch is provided with an annular bearing position, a bearing is arranged in the bearing position, the synchronous wheel spline shaft on the left side of the driving synchronous wheel passes through the bearing inner hole in the right side surface of the overrunning clutch and is connected with the spline hole in the central part of the overrunning clutch.

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